iwaki electromagnetic metering pumpiwaki-pumps.com.au/manuals/eh_w.pdf · 2020. 5. 24. · thank...
TRANSCRIPT
-
Read this manual before use of product
IWAKIElectromagnetic Metering Pump
EH-W Type
Instruction Manual
T315-2 '03/01
( )Country codes
IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 JapanTEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp)
U.S.A. : IWAKI WALCHEM CorporationAustralia : IWAKI Pumps Australia Pty. Ltd.Singapore : IWAKI Singapore Pte. Ltd.Indonesia : IWAKI Singapore (Indonesia Branch)Malaysia : IWAKIm Sdn. Bhd.Taiwan : IWAKI Pumps Taiwan Co., Ltd.Thailand : IWAKI (Thailand) Co.,Ltd.Hong Kong : IWAKI Pumps Co., Ltd.China : GFTZ IWAKI Engineering & Trading Co., Ltd.China : IWAKI Pumps Co., Ltd. (Beijing office)China : IWAKI Pumps (Shanghai) Co., Ltd.Philippines : IWAKI Chemical Pumps Philippines, Inc.Korea : IWAKI Korea Co.,Ltd.
TEL : (1)508 429 1440 FAX : 508 429 1386TEL : (61)2 9899 2411 FAX : 2 9899 2421TEL : (65)763 2744 FAX : 763 2372TEL : (62)21 690 6607 FAX : 21 690 6612TEL : (60)3 7803 8807 FAX : 3 7803 4800TEL : (886)2 8227 6900 FAX : 2 8227 6818TEL : (66)2 320 1303 FAX : 2 322 2477TEL : (852)2 607 1168 FAX : 2 607 1000TEL : (86)20 8435 0603 FAX : 20 8435 9181TEL : (86)10 6442 7713 FAX : 10 6442 7712TEL : (86)21 6272 7502 FAX : 21 6272 6929TEL : (63)2 888 0245 FAX : 2 843 3096TEL : (82)2 3474 0523 FAX : 2 3474 0221
Germany : IWAKI EUROPE GmbHItaly : IWAKI Italia S.R.L.Denmark : IWAKI Pumper A/SSweden : IWAKI Sverige ABFinland : IWAKI Suomi OyNorway : IWAKI Norge ASFrance : IWAKI France S.A.U.K. : IWAKI PUMPS (UK) LTD.Switzerland : IWAKI (Schweiz) AGAustria : IWAKI (Austria) GmbHHolland : IWAKI Holland B.V.Spain : IWAKI Iberica Pumps, S.A.Belgium : IWAKI Belgium n.v.
TEL : (49)2154 9254 0 FAX : 2154 1028TEL : (39)02 990 3931 FAX : 02 990 42888TEL : (45)48 24 2345 FAX : 48 24 2346TEL : (46)8 511 72900 FAX : 8 511 72922TEL : (358)9 2742714 FAX : 9 2742715TEL : (47)66 81 16 60 FAX : 66 81 16 61TEL : (33)1 69 63 33 70 FAX : 1 64 49 92 73TEL : (44)1743 231363 FAX : 1743 366507TEL : (41)32 3235024 FAX : 32 3226084TEL : (43)2236 33469 FAX : 2236 33469TEL : (31)297 241121 FAX : 297 273902TEL : (34)943 630030 FAX : 943 628799TEL : (32)1430 7007 FAX : 1430 7008
-
Thank you for having selected of Iwaki's EH/W type electromagnetic meteringpump.
This instruction manual, which is divided into 5 sections, namely "Safety Section,""Outline Section," "Installation Section," "Operation Section" and "MaintenanceSection," deals with the correct handling and operation procedures for the pump.
You are requested to read this manual prior to using the pump, to ensure safe andlong operation. If external signals are to be input into the pump, please consult us inadvance.
* Please make sure the end user gets a copy of this manual.
ContentsIMPORTANT INSTRUCTION ······················································· 1
Safety Section ········································································ 2~4
OUTLINE OF PRODUCT ······················································ 5~131. Unpacking and Inspection ························ 62. Operation Principle ··································· 63. Identification Codes ······························· 7,84. Main Features ·········································· 95. Specifications ···································· 10,116. Description of Parts ··························· 12,13
INSTALLATION ····································································· 14~251. Before Use ············································· 152. Notes on Operation ·························· 15~173. Installation, Piping, and Wiring ········· 18~25
PUMP OPERATION ····························································· 26~441. Operation ········································· 27~322. Methods of Pump Operation ············ 33~44
MAINTENANCE ···································································· 45~571. Causes of Trouble and
Troubleshooting ······································ 462. Maintenance and Inspection ·················· 473. Disassemble and Reassembly ········· 48~514. Accessories ············································ 525. Names of Parts and
External Dimensions ························ 53~57
■ Application of Warranty and Repair Service ·················· 58
This instruction manual should be kept on hand by the end user for quick reference. It isrecommended that each user, after reading the instruction manual thoroughly, place it in aposition close to the pump system and where it may be easily accessed by any user atany time whenever necessary.
Concerning any points you wish to know more about, contact Iwaki, an Iwaki branch office,or an Iwaki distributor.
-
- 1 -
Caution
Types of Symbols
WarningNonobservance or misapplication of the contents of the "Warning" section could lead to a serious accident, including death or injury.
Nonobservance or misapplication of the contents of the "Caution" section could lead to a serious physical injury to the user or serious damage to the product.
Indicates that "Warning" or "Caution" must be exercised. Inside this triangle, a concrete and practical image provided as a warning or caution message is depicted.
Indicates a prohibited action or procedure. Inside or near this circle, a concrete and practical image of the activity to be avoided is depicted.
Indicates an important action or procedure which must be performed or carried out without fail. Failure to follow the instructions herein can lead to malfunction or damage to the pump.
For the Safe and Correct Handling of the Pump
• Read the "Safety Instructions" sections carefully to prevent accidents involving your customers orother personnel and to avoid damage or loss of other assets. Always follow the instructions andadvice found in these sections.
• Observe and abide by the instructions described in this manual. These instructions are veryimportant for protecting pump users from dangerous conditions and situations related with theuse of the pump system.
• The symbols relate to the following meanings described below:
Important Instruction
-
- 2 -
WARNING • Turn off the power supply.
Working without disconnecting the power supply may cause an electrical shock.
Before engaging upon any working procedures involving the pump, make sure to
turn the power supply switch off and to stop the pump and other related devices.
• Terminate operation!
When you detect or become aware of a dangerous sign or abnormal condition
during operation, terminate the operation immediately and start it from the beginning
again.
• For specified application only.
The use of a pump in any application other than those clearly specified may result in
injury or damage to the pump. Use the pump strictly in accordance with the pump
specifications and application range.
• No remodeling!
Never remodel a pump. Otherwise, a serious accident may result. Iwaki will not be
responsible for any accident or damage of any kind which is caused by the user
remodeling the pump without first obtaining permission or instructions from Iwaki.
• Wear protectors.
If you touch or come in contact with any type of hazardous chemical liquid, including
but not limited to chemicals, you may experience a serious injury. Wear protective
gear (protective mask, gloves, etc.) during the pump operation.
• Operating site must be free of water and humidity
The pump is not designed to be water-proof or dust-proof. The use of the pump in
places where water splashes or humidity is high may result in an electrical shock or
short circuit.
CAUTION
• Qualified operators only!
The pump operator and pump operation supervisor must not allow any operators
who have little or no knowledge of the pump to run operate the pump. Pump
operators must have a sound knowledge of the pump and its operation.
• Specified power only.
Do not operate the pump on voltage which is not specified on the nameplate.
Failure to do so may result in damage or fire. Only the specified power level is to be
applied.
Safety Section
Electrical Shock
Prohibited
No Remodeling
Prohibited
Wear protective gear
Prohibited
Prohibited
-
- 3 -
CAUTION• Do not run the pump dry.
Do not run the pump dry (without liquid inside the pump). Heat generated as a
result of abrasion between elements inside the pump during operation without liquid
may damage the inside of the pump.
• Do not wet or dampen!
If an electric part or wiring gets wet with the liquid spilled over accidentally, a fire or
electrical shock may be caused. Install the system in a place free from liquid
spillage or leakage.
• Ventilate!
Poisoning may result during an operation which involves toxic or odorous liquid.
Ventilate the operating site sufficiently.
• Spill-out accident!
Protective measures should be taken against any accidental spill-out or leakage of
the operating liquid as a result of unexpected damage on the pump or the related
piping.
• Damaged pump
Never operate a damaged pump. A damaged pump may cause leakage or
electrical shock.
• Do not damage or change power cable!
Do not scratch, damage, process, or pull the power cable forcibly. An extra load
onto the cable, such as heating the cable or placing something heavy on the cable,
may damage the cable and finally cause a fire or an electrical shock.
• Arrange grounding!
Do not operate the pump without connecting the grounding wire. Otherwise, an
electrical shock may result. Make sure the grounding wire is connected with the
grounding terminal.
• Install an earth leakage breaker (option)!
The operation of a pump without using an earth leakage breaker may cause an
electrical shock. Please purchase an optional leakage breaker and install in the
system.
• Handling of power cable
Use of a defective or damaged power cable may result in a fire or electrical shock.
Handle the power cable carefully.
Prohibited
Electrical Shock
Caution
Caution
Caution
Grounding
Safety Section
Do not wet or dampen
Prohibited
Electrical Shock
-
- 4 -
Safety Section
CAUTION • Follow the instruction manual
Replace the consumable parts by following the descriptions in the instruction manual.
Do not disassemble any part of the pump if the disassembling procedure for the part
in question is not included in the instruction manual.
• Limited operating site and storage
Do not install or store the pump in the following places:
* Places where a flammable gas or material is used or stored.
* Places where the ambient temperature is extremely high (40°C or higher) or
extremely low (0°C or lower).
• Disposal of used pump
Disposal of used or damaged pumps must be done in accordance
with the relevant local laws and regulations. (Consult a licensed
industrial waste products disposing company.)
Prohibited
-
- 5 -
OUTLINE OF PRODUCT
1. Unpacking and Inspection ................. 6
2. Operation Principle ............................ 6
3. Identification Codes ........................... 7
4. Main Features ................................... 9
5. Specifications .................................. 10
6. Description of Parts ......................... 12
-
- 6 -
After unpacking the pump, check the following
points to ascertain that the product is exactly as you
ordered. If you find anything wrong, please get in
touch with your dealer.
z Do the model, discharge pressure, voltage, etc.,
shown on the nameplate represent what you
ordered?
x Is the following accessory included in the
package?
• Key protector. . . . . . . . . . . . . . . . . . . . . . . . . . . 1
* Install the key protector in the control unit.
c Has the pump been damaged in transit? Are the
bolts and nuts loose?
1. Unpacking and Inspection
The Iwaki EH series electromagnetic pump is a
diaphragm metering pump of the 'linear
electromagnetic drive system', which means
electromagnetic force drives the diaphragm directly.
It consists of a pump unit, a drive unit and a control
unit. Reciprocating movement is caused by the
electromagnetic force produced by the pulse current
sent from the control unit, and the force of a spring.
The reciprocating movement is transmitted to the
diaphragm directly connected to a plunger, to
change the capacity of the pump chamber. The
changed capacity and the functioning of the valves
in the pump unit drive the pump.
2. Operation Principle
Iwaki MeteringPump
CAPACITY
mR/min
MAX.PRESSURE MPa
STROKE RATE spm
VOLTAGE
MODEL
MFG.No.
IWAKI CO.,LTD. TOKYO JAPAN
CURRENT ATHERMALLY PROTECTED
POWER CONSUMPTION
1P41
6987
Discharge
Discharge pressure
Voltage
Power consumption
Electric current
Model
Manufacturingnumber
W
V
Key protector
Control unit Pump unit
Stroke lengthadjusting dial
Drive unit(body of pump) Plunger
Diaphragm
Spring
-
■ Pump Body
EH - B 20 VC - 100 P W 1 - PH MMq w e r t y u i o !0
q Series code
w Drive unit type (average of power consumption)
B: 16W C: 24W
e Effective diameter of diaphragm
10: 10mm 15: 15mm 20: 20mm
30: 30mm 35: 35mm
r Materials of pump unit (liquid-contacting parts)
- 7 -
3. Identification Codes
Parts
Code
PumpHead
Valve Ball O ring Gasket Diaphragm
Hastelloy C276
VC
VH
PC
PH
FC
PVC
GFRPP
PVDF
Ceramic
Hastelloy C276
Ceramic
Ceramic
FKM
EPDM
FKM
EPDM
FKM
EPDM
FKM
EPDM
FKM
EPDM
FKM
EPDM
PCTFE
PTFEPTFE
+EPDM
Valve seat
Material code PVC: Transparent vinyl chloride
GFRPP: Glass-fiber reinforced polypropylene
PVDF: Polyvinylidene fluoride
FKM: Fluoroelastmer
EPDM: Ethylene propylene diene methylene
PTFE: Polytetrafluoroethylene
PCTFE: Polychlorotrifluoroethylene
t Line voltage
100: AC 110/115 V 20E: AC 220-240 V
y Power cable type
P: With an attaching plug
No indication: With press-fit terminals (for 220/240V)
u Control unit type
W: Water treatment type
i Connection tube diameter (inner diameter × outer diameter)2: φ4 × φ63: φ6 × φ85: φ9 × φ126: φ10 × φ12
-
- 8 -
EHC - 100B P W - PHq
q
w
e
r
t
y
w e r t y u
Type of control unit
Line voltage
Power supply cord type
Control function type
Controller unit model code
Type of drive unit(power consumption)
EHC
W: Water treatment type
uIndication of specialspecifications
01~99: Special specificationsNo indication: Standard specifications
PH: pH controlPH1PH2PH2BOR: ORP controlCD: Conductivity Control
B: For EH-B pump (16W)C: For EH-C pump (24W)
100: AC110/115V20E: AC220, 230, 240V
P: With attaching plugNo indication: With press-fit terminals
o Control function type
* PH: pH type (pH control function, A.T.C: positive thermistor 6.8Ω at 25 ºC)PH1: pH type (pH control function, A.T.C: Pt1000)
* PH2: pH type (pH control function, A.T.C: Pt100)
PH2B: pH type (pH control function, A.T.C: Pt100 with BNC plug)
OR: ORP type (oxidation-reduction potential control function)
CD: Conductivity type (conductivity control function)
*!0 Special specification code
01~99: None-standard materials, different diameter fitting, etc.
The specifications marked with asterisks are special specifications, while the rest are standard specifications.
■ Control Unit
■ Points to Note
q Do not detach the control unit unless necessary.
w The control unit must not be attached to a pump with a different drive unit coad or line voltage code. (Verify with
the name plate.)
CautionIf the control unit is attached to a pump with a different drive unit code or line voltage code, it will cause a problem or
failure of in the electronic circuits of the control unit and/or the drive unit of the pump.
-
- 9 -
■ Control Unit
The pump operation is electronically controlled by the control unit which has a built-in CPU of its own (emphasis is
laid on the facility of controlling operation and functions).
PH model ············The pump stroke rate is controlled in proportion to the pH value measured by the electrode, for
accurate control of pump discharge.
OR model············The pump stroke rate is controlled in proportion to the ORP value measured by the electrode, for
accurate control of pump discharge.
CD model············The pump stroke rate is controlled in proportion to the Conductivity value measured by the senser,
for accurate control of pump discharge.
■ Simple operation
As the operating keys of the control unit are used to run the pump and to control the flow rate, system control of the
flow rate can be carried out easily.
■ Memory backup function
Due to the memory backup function, set values remain stored even after the power has been turned off. When power is
restored, the pump operates with these set values.
4. Main Features
Pump unit• Reciprocating movement of the diaphragm
changes the capacity of the pump chamber,to drive the pump.
Stroke length control unit• Adjusts or sets the discharge per stroke in the range of 0 to 100%.
Drive unit• Causes the diaphragm to reciprocate, by means of the
electromagnetic force and the force of the spring in responseto command signals received from the control unit.
Control unit• Controls pump operation, flow rate and
adjustment, and setting of the stroke rate.
-
- 10 -
5. Specifications
Note 1: The table shows the results of tests with clear water at the rated voltage and normal temperature.
Note 2: The maximum discharge is the amount under the maximum discharge pressure (stroke length
100%; stroke rate 100%). Under a lower pressure, the discharge is larger than shown in the table.
Note 3: Operating ambient temperature: 0~40°CNote 4: Liquid temperature: 0~60°C (VC, VH : 0~40°C)Note 5: Permissible voltage fluctuation: Within ±10% of ratingNote 6: The connection tube size φ 6 × φ 8 is not applicable to PC and PH types. Note 7: The FC type does not have B15, B30, or C15.
Note 8: The applicable sizes of connection tubes for the FC type are φ 4 × φ 6 for B10, B20, and C20 andφ 10 × φ 12 for C30 and C35.
* Please consult us for special specifications such as slurry liquid handling.
* Please note that for the purpose of improvement, parts which have no effect on specifications and fitting sizes are
subject to change without prior notice.
■ Sound level
The sound level of the each type of the pump is 60 dB (A scale) or less at a distance of one meter
Note 6: Permissible voltage fluctuation: Within ±10% of rating
* Please consult us for special specifications such as in the case of handling slurry.
* Please note that for the purpose of improvement, parts which have no effect on specifications and fitting
sizes are subject to change without prior notice.
50/60Hz
EH-B10 38 0.04-0.11 0.98
0 ~ 360
40 ~ 100(0.4~1.0)
16EH-B15 70 0.04-0.19 0.69
EH-B20 105 0.06-0.29 0.39 20 ~ 100(0.2~1.0)
EH-B30 230 0.13-0.64 0.20
EH-C15 90 0.05-0.25 0.98
24EH-C20 130 0.07-0.36 0.69 20 ~ 100
(0.25~1.25)EH-C30 270 0.15-0.75 0.34EH-C35 450 0.25-1.25 0.20
FC/SHCapacity[ml/min]
Capacity[ml/stroke]
Max.pressure[MPa]
Stroke frequency[spm]
Stroke length[%](mm)
Average powerconsumption[W]
EH-B10 38 0.04-0.11 0.98 40 ~ 100(0.4~1.0)
EH-C20 120 0.07-0.33 0.6920 ~ 100
(0.25~1.25)24EH-C30 260 0.14-0.72 0.34
EH-C35 410 0.23-1.14 0.20
0 ~ 360EH-B20 95 0.05-0.26 0.39 20 ~ 100
(0.2~1.0)
16
■ Pump specifications
VC/VHPC/PH
Capacity[ml/min]
Capacity[ml/stroke]
Max.pressure[MPa]
Stroke frequency[spm]
Stroke length[%](mm)
Average powerconsumption[W]
-
- 11 -
■ Specifications of Control Unit
Mode Mode
Change
PHAUTOMAN
Code ORAUTOMAN
Entering by keys
CDAUTOMAN
KAUTO• SET• PB• spm• Lo• Hi
KMAN• spm
0~10mS/cmCell Constant 0.80~2.20
Temp.Coefficient:: -9.99~9.99% / ºC
KAUTO• SET• PB• spm• Lo• Hi
KMAN• spm
-1999~+1999mVZERO
4 keys START/STOP , ▲ , s , FUNCBy recieving stop signal from outside
4 Digit LCD Measure, Set Value, Error, and othersGreen LED
No voltage contactBy recieving stop signal
Synchronized output with pump stroke
Lower than "Low" or higher than "Hi"
Open collector Sink type (Isolated)Max.voltage DC35V, Min. Current DC2.5mA
KAUTO• SET• PB• spm• Lo• Hi
KMAN• spm
Prameters
KeysStop
DisplayStroke
Sensor
StopStop
SynchronizedstrokeLo/HiWithin
SET Value
Form
Function
Indication
Input
Output*1(Select one)
0~14pHZERO, SPAN (ATC)
With SET Value±0.2mS / cm
With SET Value±20mV
With SET Value±0.20pH
DC0~1V (0~10mS/cm)Max. load
10kΩ or more
DC0~1V (-1999~1999mV)Max. load
10kΩ or more
DC0~1V (0~14pH)Max. load
10kΩ or moreRecord out
0~9.99mS/cm-9.99~9.99mS/cm0~360spm-9.99~9.99mS/cm-9.99~9.99mS/cm
0~360spm
-1999~+1999mV-1999~+1999mV0~360spm-1999~+1999mV-1999~+1999mV
0~360spm
0~14pH-14~14pH0~360spm0~14pH0~14pH
0~360spm
Note: *1 Standard output is set "STOP". Select one output from Table
When select output except STOP, inform with ordering.
-
- 12 -
6. Description of Parts
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
Unit displayRemains lit while the temperature display is selected. This display is not provided on the "OR" model.
Display panelSet values and error messages are displayed.
ALM displayRemains lit if the measured value exceeds the upper or lower limit value.
Unit displayRemains lit when stroke rate display is selected. Flashes if the stroke rate has reached the upper limit value.
Unit displayRemains lit when the measured value or parameter is displayed. Displays "mV" for an OR type and "mS/cm" for a CD type.
Hi displayFlashes if the measured value exceeds the upper limit value. Remains lit when the parameter is displayed.
Lo displayFlashes if the measured value exceeds the lower limit value. Remains lit when the parameter is displayed.
Function keyPressed to determine a set value or store a value. Also used in multiple-key operation in combination with another key for other selection purpose.
PB displayRemains lit when proportional band value is selected for parameter display.
Operation mode displayRemains lit when automatic operation mode (AUTO) is selected. Flashes during automatic operation.
Operation mode displayRemains lit when manual operation mode (MAN) is selected. Flashes during manual operation.
ZERO displayRemains lit when the calibration set value is selected for parameter display.
ON lampRemains lit while power is supplied. Flashes in synchronization with the pump stroke.
SPAN displayRemains lit when the calibration set value is selected for parameter display.
START/STOP keyPressed to start or stop pump operation.
Shift keyPressed to move to the next rightward digit for value setting. Also used in multiple-key operation in combination with the function key for the selection of an operation mode.
SET displayRemains lit when the SET value is selected for parameter display. Also remains lit when any other set value is displayed.
ZERO is not provided on the CD type, which employs CELL instead. SPAN is not provided on the OR type and the CD type. The CD type employs % instead. For detailed operation procedures for these parameters, refer to the "Operation" section."Multiple-key operation" means that the particular key is pressed with another key simultaneously. In this unit, the function key and another key are pressed simultaneously.The operation surface of the control unit is covered with protective film for shipment. Remove this film before using the control unit.
UP keyCalls up the set value while a parameter is displayed. Increases the value of the flashing digit when a value is to be set. Used also in multiple-key operation in combination with the function key for the selection of the display content.
Control unit
Stroke rate adjusting dial
Drivel unit
Pump unit
■ Names of Parts
■ Control unit
-
- 13 -
■ Basic display patterns
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
Display pattern Description
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
AUTO mode operation is under way.The value may be 0 spm with the pump operation suspended, depending on the set value and the measured value.
The pump is in standby condition in MAN mode.Under normal conditions, WAIT is displayed while the pump is in standby condition or the stroke rate is displayed while the pump is in operation.
The control unit is ready for mode selection.MAN or AUTO remains flashing. This mode selection display can be accessed from the WAIT (standby) display.
Set value is being changed.The parameter display has been replaced by this display and the set value is ready to be changed. The value of the flashing digit can be changed by pressing the UP key.
Error displayIf an attempt has been made to enter a value out of the setting range as set value, this display flashes for 5 seconds.
Error displayIf the parameter PB has been set at 0.00 or -0.00, this display flashes for 5 seconds.
-
- 14 -
INSTALLATION
1. Before Use ........................................15
2. Notes on Operation .......................... 15
3. Installation, Piping, and Wiring ........ 18
-
- 15 -
Caution• Turn off the power supply.
Working without disconnecting the power supply may cause an electrical shock. Before engaging upon
any working procedures involving the pump, make sure to turn the power supply switch off and to stop
the pump and other related devices.
• Terminate operation!
When you detect or become aware of a dangerous sign or abnormal condition during operation,
terminate the operation immediately and start it from the beginning again.
• Specified power only.
Do not operate the pump on voltage which is not specified on the nameplate. Failure to do so may
result in damage or fire. Only the specified power level is to be applied.
• Keep from heat or flame.
Do not place any dangerous materials or flammable objects near the pump for the prevention of fire or
accident.
• Damaged pump
Never operate a damaged pump. A damaged pump may cause leakage or electrical shock.
1. Before Use
“Strictly observe the following points.”
Operators and maintenance service staff must read the instruction manual thoroughlybefore using the products. Do not operate the pump system unless all of the contents inthe manual are completely understood.
2. Notes on operation
• Dropping the pump or subjecting it to strong impacts
may result in faulty performance. Handle the pump
with care.
-
- 16 -
• The pump can be operated outdoors, as the pump
employs a simple water and dust proof structure.
When installing the pump, avoid places exposed to
direct sunlight or direct rain with an ambient
temperature of above 40ºC, or with a relative humidity
of above 85%. Though the pump has a simple
waterproof and dustproof structure, a sheltered location
is recommended.
• Select an installation site convenient for future
maintenance and inspection, and fix the pump on a
level floor so that it is free of vibrations.
• Ventilate!
Poisoning may result during an operation which
involves toxic or odorous liquid. Ventilate the
operating site sufficiently.
• Do not wet or dampen!
If an electric part or wiring gets wet with the liquid
spilled over accidentally, a fire or electrical shock may
be caused. Install the system in a place free from liquid
spillage or leakage.
• Install an earth leakage breaker (option)!
The operation of a pump without using an earth leakage
breaker may cause an electrical shock. Please purchase
an optional leakage breaker and install in the system.
• The control unit can be detached. However, it should
not be detached unless unavoidable. Never use the
detached control unit with the pump models other than
the one delivered.
Prohibited
Caution
-
- 17 -
• Arrange grounding!
Do not operate the pump without connecting the
grounding wire. Other wise, an electrical shock may
result. Make sure the grounding wire is connected with
the grounding terminal.
• Limited operating site and storage
Do not install or store the pump in the following places:
* Places where a flammable gas or material is used or
stored.
* Place where the ambient temperature is extremely high
(40ºC or higher) or extremely low (0ºC or lower).
• Cleaning
Wiping the pump body or the nameplate with a cloth
soaked in a solvent such as benzene, thinner or
kerosene may remove or change the color of the
coating. Use a dry cloth or a cloth soaked in water or
neutral detergent.
• If the pump is used for industrial porpose, the electric
power cable of the pump must be installed in the
enclosure which satisfies IP54 or in the atmosphere
corresponding to IP54
Prohibited
Prohibited
-
- 18 -
3. Installation, Piping, and Wiring
■ Installation
z Installation
Install the pump at a place where the ambient
temperature does not exceed 40ºC and the relative
humidity does not exceed 85%. (There should be no
dew condensation inside the control unit.) The place
should be convenient for future maintenance and
inspection. A sheltered location is recommended.
x Place the pump as close to the suction tank as possible
so as to realize flooded suction piping (install the pump
at a lower level than the tank on the suction side).
c Fix the pump firmly by means of m5 screws on a level
floor free from splashing liquid.
If the pump is inclined, the discharge may be decreased
or may even reach zero.
v If the pump is used for a liquid that tends to generate air
bubbles (sodium hypochlorite, hydrazine solution, etc.),
make sure to install it in a cool, dark place away from
direct sunlight. When a tank, etc., is used, flooded
suction piping is required.
Discharge side
Suction side
-
- 19 -
■ Piping
z Piping of pump fittings
For discharge side and suction side piping, use the tube
provided. The connections should be firm enough to
prevent liquid leakage or air suction.
• Since the fitting nuts are made of plastic, take care not
to tighten them excessively, or damage may occur to
the fittings
• If the tube provided is not long enough, use, for
example, PVC braided tube with a diameter matching
that of the pump fittings.
x Piping for air bleeding
As a safety measure, prior to bleeding air, connect the
tube to the discharge port of the air vent unit so that the
bled air can be discharged into the suction tank, a drain
plate, etc.
(See 'Air Bleeding' on page 23.)
[Note]
The B30, C30, C35 and FC type is not equipped
with an air vent unit.
c Installation of check valve
The pump is provided with a check valve to prevent
overfeeding. The check valve must be used in any of
the following cases:
q The liquid surface on the suction side is higher than
that on the discharge (fig. A.)
The pressure at the feeding position is atmospheric
pressure, and liquid is fed at a position lower than
the suction side liquid surface.
tube
Fitting nut
Fitting
Check valve
Discharged into the suction tank
Ssuction side
Discharge side
Fig. A
-
- 20 -
w If the pressure on the suction side is higher than that
on the discharge side (Fig. B).
e The liquid surface on the discharge side liquid is
higher than that of the suction side, but the
difference between the two levels is 5 m or less (Fig.
C).
r The load pressure (pipie resistance, discharge pump
head, etc.) applied to the pump is 0.13 MPa
{1.3 kgf/cm2} or less.
• Install the check valve at the edge of the discharge side
connecting tube. It must be least 1 m away from the
pump .
• The connection port of the CA type check valve can be
mated with not only the tube but R1/2 and R3/8 threads.
Cut off the unnecessaly section with a pipe cutter.
(For applicable pump types, see 'Accessories' on page
52.)
• Besides the CA type, the CB double-ended type
(optional item) for connection to braided tube is
available.
• A back pressure valve (optional item) can be used in
place of the check valve. For details, can Iwaki.
Fig. B
Fig. C
R1/2 R3/8 Diameter φ 9
CA type check valve
BV type back pressure valve
BVC type back pressure valve
CB type check valve
5m
-
- 21 -
I. Wiring
■ Points to be checked before wiring
z Make sure that the main power switch is in OFF position (or power supply is disconnected).
x The pump is turned ON or OFF by operating the key on the control unit. For ON/OFF switching of the power
supply by the use of relay, use a relay with a contact rating of 15A or more. A relay with a lower rating than that
may be destroyed (by contact fusion). To meet the application need to stop the pump frequently, use the STOP
function with the power supply continuously connected. The figure below shows the recommended wiring.
Use the contact "a" as shown above, especially when the pump ON/OFF switching is interlocked with the power
ON/OFF switching of another water supply pump.
c The electrical connection should be carried out by an
authorized electrician in accordance with local
regulations. (Use quality wiring materials only and
observe the technical standards of electrical installation
and interior wiring regulations.)
• Connection with 110V power supply
The power cable has a connection plug at its end.
Insert the plug into a 110V plug socket.
• Connection with 220-240V power supply
The power cable has a press-fit terminal at its end.
Connect the terminal firmly.
Caution
Do not connect the control unit with a power source which
supplies power higher than that which is rated. Otherwise,
damage to the electric circuits in the control unit may be
sustained.
EH/W4
6
Ry Contact "b"
Contact"a"
Relay
Powersupply
Caution
Only the operator/service staff who is trained for safety handling procedures should be in charge of the
related electric arrangement and control of the power source. Failure to observe this instruction may result
in injury to personnel or damage to property.
-
- 22 -
v Make sure to establish a ground.
b Do not obtain a power supply from the same power
service outlet that also supplies power to high-power
electric equipment which generates surge voltage which
results in a malfunction of the electric circuits in the
control unit. Be careful about the noise generated by an
inverter or the like as well.
n The control unit can be easily detached from the pump
drive unit. However, do not connect the control unit
with a pump which is specified for a different operation
voltage or drive unit. In order to prevent damage to the
electronic circuit and the drive unit, use the control unit
with the delivered pump only.
• Surge voltage
The electronic circuits in the control unit may be
affected by an excessively strong surge voltage. It is
recommended that the control unit should be distanced
from high-power electric equipment of 200V or higher
that generates surge voltage. The following measures
may be taken, depending on the circumstances.
q Use a surge absorbing element (such as a varistor
with surge resistance of 2000A or more) at the
power connection of the pump.
w Install a noise-cutting transformer.
Surge absorbing element
Noise-cutting transformer
-
- 23 -
■ Wiring
• Names of parts
• Connection of pH or ORP electrode
Set the respective wiring terminals of the pH electrode as shown in the
figure. Check the terminals with the respective tags attached for a
correct connection. The electrode which has a model number ending
with "TV" has 5 wires on it. The electrode which has a model number
ending with "V" has 2 wires on it. In the case of the TV type, remove
the resistor installed at the T-T terminals before connecting the wires.
An OPR electrode has two wires only, which are not to be connected
to the terminals T and E. No resistor is attached, either.
GLASSE T T REF
Green Black Red Grey Grey (Large)
TC Ref pH
-
- 24 -
Caution
All the wires are prepared especially for the control unit. Do not attempt to modify or extend them, for such a attempt
may affect measurement accuracy.
Caution
If a wire needs to be extended, make sure to use a relay box. Connect the wires within the relay box correctly.
Follow the instruction manual attached to the electrode. In the case of a pH electrode provided with a temperature
compensating element, keep the resistor installed at the T-T terminals and do not connect any wire to the T terminal.
(Terminate the ends of wires upon wiring.)
• Connection of conductivity sensor
Conductivity sensor ESC-150P1-06SV only is applicable to the
CD type. Note that no other type of sensor is applicable.
Wire the sensor as shown in the figure. Be careful with the
color mark on each wire. Insert the top of each wire into the
terminal and fasten the connection with the use of a flat-blade
precision screwdriver. The fastening torque should be 4 kgf·cm
or lower.
Caution
All the wires are prepared especially for the control unit. Do not attempt to modify or extend them, for such a attempt
may affect measurement accuracy.
• When stop function is used
Stop function refers to a method to stop the
pump operation temporarily by sending an
external no-voltage contact signal (contact "a").
The wiring required for the use of this function
should be done in accordance with the following steps. Connect the wires to the removable connectors "4" through
"6". After completing the connection, pull out the connectors once and then return them to their original place.
Before inserting the tops of the wires to the terminals, unsheathe them for a length of 5 mm from the ends. Fasten
the connectors with a flat-blade precision screwdriver. The fastening torque should be 4 kgf·cm or lower.
• For open collector
Polarity should not be mistaken. "4" is for plus (+) and "6" is for minus (-). (Max.
rating 5V, 1 mA)
• For relay or other contact means
A relay or a contact should be designed for electronic circuits and has a min. load of 1
mA or less.
1 2 3 4 5
Green Black White Red Shielding wire
PUMP
External contact
ON
CLOSEOPEN
4 5 6
Wiring for open collector
-
- 25 -
• When a recording output (recorder) is used
The recorder will output in the range of DC0 through 1V for the measurement ranges of respective device models.
The connected load should be 10 kΩ or more. Take the same wiring as in the case of the stop function above.Connect wires to the connectors "5" and "6." Be careful not to mistake the polarity, with "5" for + and "6" for -.
• When open collector output is used
In the case of PH or OR model, connect the wires to the + and - terminals on the terminal block on the substrate.
In the case of the CD model, connect wires to terminals 1 and 2 on the connector CN12. ("1" is for +
and "2" is for -.)
Use an M3 press-fit terminal at the end of a wire for the PH or OR model. Unsheathe the end of the
wire by 5 mm for the CD model.
The output setup is shown in the figure on the right. The min. suction current is 2.5 mA. Use a
converter or the like to drive a relay or AC device.
■ Wiring Method
Caution
Do not carry out wiring with the pump in operation. Be sure to turn the power off before wiring. Otherwise, an electric
shock or short circuit may be caused which will result in the malfunction of the pump.
Caution
The internal circuit remains electrically charged immediately after the power is turned off. Wiring work should be begun
at about 1 minute following the turn-off.
z Remove the retaining screw on the terminal box and open the terminal box.
x Take out the removable connector and the PCB connector.
c Remove other cable nuts which are not used for wiring. Take out the blind cap and the cable gasket from the
terminal box. Then, set the cable nut and the cable gasket onto the cable to be connected. Insert the cable inside the
terminal box.
v Use a proper connection tool for a reliable connection.
b Upon completion of the connection work above, return the connectors to their original place.
Caution
Check that the PCB connector is inserted firmly. Failure to secure the PCB in a complete connection may cause a
malfunction of the pump system.
n Install the terminal box by pressing the flange against the recess in the control unit housing. Fasten the retaining
screw firmly. Then, adjust the excess cable inside the terminal box and fasten the cable nut.
Caution
A cable which is 7.8 mm in outer diameter should be used in wiring. Any cable smaller than this size will result in poor
sealing and cause a malfunction of the system.
m Designated ferrite core (Model: ZCAT, manufacturer: TDK), which is a noise reduction part, should be installed
near the external input signal cable. Install this near the control unit as closely as possible.
-
- 26 -
PUMP OPERATION
1. Operation ......................................... 27
2. Methodsn of Pump Operation .......... 33
-
- 27 -
■ Test run (air bleeding to adjustment of discharge)
When the pump installation, piping and wiring have been comleted and the operating procedure has been fully
understood, preparations for pump operation should be made bleeding the air and adjusting the discharge.
* For the operating procedure, refer to 'Methods of Pump Operation' on page 33.
■ Air Bleeding
Operate the pump and feed the liquid to the pump unit for air bleeding.
Air bleeding means removing air trapped in the suction side tube and the pump head. When the pump is to be used for
the first time or the liquid tank has been replace, make sure to bleed air by following the steps described below.
Caution
Air bleeding requires some care as liquid splashes out of the discharge port of the air vent unit. Do not forget to connect
the tube to the air discharge port and return the air to the liquid tank, a drain plate, atc.
1. Operation
• Starting up and stopping of pump ("MAN" control mode)
z Turn the power on.
• When power is applied, the ON lamp (green) lights and
"MAN" mode is established. (Upon initial power-up)
x If "AUTO" is displayed, change "AUTO" to "MAN" by
pressing the key while the key is kept
depressed.
indicates blinking of the display. When the
pump is in operation, press the key to select
standby mode before changing to "MAN."
* Every time you press the key, "MAN" or
"AUTO" flashes alternately.
STARTS T O P
F U N C
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
PB
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
*
-
- 28 -
c Press the key to select "MAN." Then, "WAIT"
will be displayed.
v Press the key once.
• The display panel on the control unit displays "360"
and the pump starts operating. (Stroke rate initial set
value: 360 spm)
* Every time you press the key, the pump starts or
stops operating.
STARTS T O P
STARTS T O P
F U N C
Caution• Do not run the pump with the discharge-side valve closed.
Operating the pump with the discharge-side valve fully closed may cause a liquid leakage or a rupture
in the piping. Never operate the pump with the discharge-side valve completely closed.
• Do not operate the pump dry.
Operating a pump filled with liquid after dry operation may result in liquid leakage. Make sure to
operate the pump with sufficient liquid inside.
* If the pump is operated dry for a long time (30 min. or longer), the pump may be heated excessively,
which will result in liquid leakage due to the deformation of the pump unit (pump head, valve case, etc.)
and/or loosened pump head assembly.
• Loosened pump head
Loosened installation bolts on the pump head may result in liquid leakage.
* Prior to the initial pump run, fasten the 4 hex socket bolts. (During pump storage or transportation, the
hex socket bolts may be loosened.)
* Fastening torque: 2.16 N·m {22 kgf·cm}
Tighten all the hex socket bolts fully by applying an equal torque in a diagonal order among the bolts.
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
*
-
- 29 -
■ Procedure for air bleeding in EH-B10, 15, 20, C15, and 20 typesz Open the air vent valve to put the pump in operation.
The air vent valve can be opened when the air vent
adjusting screw is turned counterclockwise (about haif
a rotation).
x In this state, leave the pump running for about 10
minutes to let the air out.
• Bleed air from the tube on the suction side and the
pump head, and fill them with water.
c Close the air discharge port by turning the air vent
adjusting screw.
v Finally, make sure that no liquid leaks from any part.
■ Procedure for air bleeding in EH-B30, C30, and C35 typesz Return the tube connected to the fitting nut on the discharge side to the liquid tank or a drain plate.
• If the check valve is attached to the discharge side valve, it should be detached before the above step z.
Caution
Some types of liquid will damage skin and machine parts. If your hand or any of the pump parts is exposed to such
liquid, wipe it away immediately.
x Run the pump for about 10 minutes to bleed air.
c After letting the air out of the pump head and fitting the pump head with water, reconnect the discharge side tube to
the regular piping.
v Finally, make sure that there is no leakage in any part.
-
■ Adjustment of DischargeThe set values of the stroke length and stroke rate should be determined with full consideration of the operating
conditions of the pump and the properties of the liquid to be handled. Adjust the discharge.
• There are two ways of adjusting the discharge: adjustment of stroke rate and adjustment of stroke length.
• The former is generally used. Adjustment of stroke length is done for the range that cannot be covered adjustment
of stroke rate.
Adjustment of stroke rate (For reference only)
The discharge should be adjusted properly, referring to the following description.
q If the liquid tends to generate air bubbles (sodium hypochlorite (NaOC1), hydrazine solution (N2H2H2O), etc.), keep
the stroke length at around 100% and adjust the stroke rate.
• When the stroke length is set at a very low level, the discharge may gradually decrease.
w When the back pressure on the discharge side is high, keep the stroke length at around 100% and adjust the stroke
rate.
e If the reaction to a discharge per shot fluctuates violently due to neutralization or titration, shorten the stroke length
to reduce the discharge and use the stroke rate for further adjustment.
z Procedure for Discharge Adjustment Viewed from the
angle of pump performance, the following is the best
way.
q Set the stroke length at 100% and roughly adjust the
discharge by the stroke rate.
w Measure the discharge.
e If the discharge is less than the required amount, increase the stroke rate and measure the discharge again.
r Fine-turn the discharge by adjusting the stroke length.
t Measure the discharge for the last time to confirm that the required amount is discharged.
- 30 -
360spm
(Storke length fixed at 100%)
270spm
(Storke length fixed at 75%)
180spm
(Storke length fixed at 50%)
Dis
char
ge
Adjusted stroke length
Fixed stroke rate
-
z Adjustment of stroke rate
The stroke rate is set by operating the control unit keys.
• Adjust the stroke rate per minute of the plunger in the
range of 0 to 360 spm by the control unit.
x Adjustment of stroke length
The stroke length is adjusted by changing the degree of
plunger return.
q Turn the power on and adjust the discharge of the pump
by rotating the stroke length adjusting dial while the
pump is in operation.
w The graph on the left shows the relation between
discharge and stroke length, which is shown in % of the
amount indicated on the nameplate as 100.
• In practical use, set the stroke length in the range of 50
to 100%.
Do not rotate the stroke length adjusting dial when the
pump is out of operation.
- 31 -
Dis
char
ge
Adjusted stroke length
Fixed stroke rate
Dis
char
ge
Adjusted stroke length
Fixed stroke rate
-
- 32 -
■ Starting Loaded OperationWhen air bleeding and discharge adjustment have been completed, the pump is ready for loaded operation.
See that the entire setting is complete, then start pump operation by pressuing the key.
* For the operating and setting procedures, refer to 'Methods of Pump Operation' on page 33.
■ Suspension of Operation• Suspection of operation for a long time (over a month)
Before stopping the pump, run it with clear water for about 30 minutes to wash the liquid-contacting parts and
inside of the piping.
• Resumption of operation
If the pump dose not suck or feed liquid when the power is turned on, clean the valve sets and remove the solids, if
any. If air enters the pump head, bleed it and readjust the discharge. (See pages 22~26.)
-
- 33 -
The operating profile and the discharge amount of EH Series Pump (for water treatment process) is
controlled by the control unit (with the contents of setting input or changed as necessary). Functions
differ the selected operation mode. Read this section carefully before actual operation.
Page
I. Manual Operation ·······························································34
II. Setting and Changing of Modes ·········································35
III. Calling Up, Setting andChanging of Parameters···············································36~38
IV. Calibration and Operationof Electrode ··································································38~41
V. Setting of Parameter andDescription of Performance ················································42
VI. Other Display Messages andSpecial Procedure ························································43~44
2. Methods of Pump Operation
-
- 34 -
I. Manual Operation
■ Start-up and Stop
• Starting up procedure
Before applying power, check the specified power supply on the nameplate.
Caution
Never use a power source other than the specified one. This will prevent trouble or damage.
z Power supply
When power is supplied, all display elements light up
once. Then, they will go out instantly to make a normal
display. The contents valid before the previous power-
off are displayed.
Note: The contents of the display differ depending
on the selected mode.
• For MAN mode, "WAIT" or stroke rate is displayed.
(The explanation in this section is given on the
assumption that "WAIT" is displayed.)
• For AUTO mode, the pH value is displayed on the PH
model (voltage mV on OR model and conductivity
mS/cm on the CD model). (Upon the initial power-up,
"WAIT" is displayed in MAN mode.)
x Starting and stopping
The pump starts running when the key is pressed
once.
the pump stops running when the key is pressed
again.
* Each press of the key selects starting and
stopping alternately.
STARTS T O P
STARTS T O P
STARTS T O P
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
*
-
- 35 -
II. Setting and Changing of Modes
■ Setting and Changing of Modes
• MAN' and 'AUTO' modes are available for selection.
MAN mode:··················· Manual operation (for air elimination or test run)
AUTO mode: ················· pH control operation with PH model
ORP control operation with OR model
Conductivity control operation with CD model
z Stop the pump through key operation and put it in
standby condition (with 'WAIT' displayed).
x While holding the key down, press the
key. Then, the LCD display starts flashing, indicating
that the mode can be changed.
c If the key is pressed while 'AUTO' is flashing,
'MAN' is displayed in flashing mode.
* Each time the key is pressed, 'AUTO' or 'MAN'
is alternately displayed in flashing mode.
v Select a display from the flashng display and press the
key to enter the election. (now the mode
changing process is completed.)
F U N C
F U N C
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
PB
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
spm
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
*
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
-
- 36 -
III. Calling Up, Setting and Changing of Parameters
■ Parameters
Parameters, data which determine the operation and control of pump, store respective set values specified previously.
The applicable parameteres available in each model and each mode are as shown below.
■ Calling up parameter
Parameters can be called up and displayed in the operation
panel as necessary.
z Press the key once to display the first parameter.
Each time the key is pressed, the following
parameters are displayed one at a time in sequence.
When all the parameters have been displayed in such a
manner, the first parameter is displayed again. (Each
time the key is pressed, the parameters are
displayed in sequence downward from the top as
indicated in the above table for each mode.)
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
Mode Parameter Initialvalue Setting range Step
Initialvalue Setting range Step
Initialvalue Setting range Step
PH model OR model CD model
360spm
7.00pH
4.00pH
7.00pH
5.00pH
360spm
2.00pH
12.00pH
360spm
0mV
0mV
1000mV
360spm
-1500mV
1500mV
MAN
AUTO
SET
ZERO
SPAN
CELL
%
SET
Pb
spm
Lo
Hi
0~360spm
0.00~14.00pH
0.00~14.00pH
0.00~14.00pH
-14.00~14.00pH
0~360spm
0.00~14.00pH
0.00~14.00pH
0~360spm
0mV
-1999~1999mV
-1999~1999mV
0~360spm
-1999~1999mV
-1999~1999mV
1spm 360spm 0~360spm 1spm
1.00 0.80~2.20 0.01
2.00% -9.99~9.99% 0.01%
5.00mS/cm 0.00~9.99mS/cm 0.01mS/cm
-2.5mS/cm -9.99~9.99mS/cm 0.01mS/cm
360spm 0~360spm 1spm
0.00mS/cm 0.00~9.99mS/cm 0.01mS/cm
9.99mS/cm 0.00~9.99mS/cm 0.01mS/cm
0.01pH
0.01pH
0.01pH
0.01pH
1spm
0.01pH
0.01pH
1spm
1mV
1mV
1spm
1mV
1mV
-
- 37 -
■ Changing parameter
z Call up a parameter to be changed. Press the key
to display a parameter to be changed.
x Press the key to start the set value display section
flashing.
indicates blinking of the display.
c Press the key again, to move the position of the
digit to flash. Each press of the said key moves the
digit rightward one at at a time.
v Each press of the key, then, increase the value of
the digit selected.
(0/1/2/3·········/9/0)
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
PB
PB
PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
-
- 38 -
b With the desired value displayed, press the key
to enter the value. (The set value display section stops
flashing.)
n When setting a parameter with a minus sign, call up the
parameter and press the key first. Then, press
the key once to flash a minus sign.
Warning
Press the key for the storage of a set value in the
memory. Each time a set value is changed, check that no
digit is flashing. Also, make sure to press the key.
IV.Calibration and Handling of Electrode
Warning
Calibration of electrode is an indispensable process in the use of the control unit. When using an electrode for the first
time, washing it, replacing and recalibrating it, even if the ZERO or SPAN described in the following procedure has been
set up, press the key to make the display flash and press the key to memorize the value newly.
z Change the mode, if MAN mode has been selected, into
the AUTO mode.
x Prepare two types of pH standard liquid. (pH7 liquid
and pH4 liquid)
c Press the key to call up parameter ZERO. Place
the pH electrode in the pH7 standard liquid for 1 to 2
minutes. ( lights up and all the digits are
displayed.)
v Set the value of the pH7 standard liquid.
Press the key to make the highest digit flash.
Pressing the key while the digit is flashing
increases the value by 1. Pressing the key then
moves the flash to the next digit.
For the set value, take the value on the package of the
standard liquid in accordance with the temperature of
the liquid. (The value indicated for an electrode
without a temperature compensating element is
specified for a temperature of 25 °C.)
indicates blinking of the display.
Even when setting the parameter to the same value as the
current one, carry out steps c and v above.
ZERO
F U N C
F U N C
F U N C
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
LoPB
MAN
ZERO SPAN
AUTO °C ALMPB
PB
PB
SET
spm
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
Caution
In the step of calibration, make sure that the pH
electrode is soaked in each pH standard liquid
completely. Be careful not to expose the electrode to
the air or use the same liquid for both ZERO and
SPAN. Otherwise, incorrect values will be stored in the
memory which will result in abnormal operation.
F U N C
-
- 39 -
b Press the key to enter the value. The display
stops flashing.
With the above step completed, the signal from the pH
electrode and set value are memorized.
n Press the key to call up parameter SPAN. Place
the pH electrode in the pH4 standard liquid for 1 to 2
minutes. ( lights up.)
m Set the value of the pH4 standard liquid.
Press the key to make the highest digit flash.
Pressing the key while the digit flashes increases
the value by 1. Pressing the key then moves the
flash to the next digit.
For the set value, take the value on the package of the
standard liquid in accordance with the temperature of
the liquid. (The value indicated for an electrode
without a temperature compensating element is
specified for a temperature of 25 °C.)
indicates blinking of the display.
Even when setting the parameter to the same value as the
current one, carry out steps n and m above.
, Press the key to enter the value. The display
stops flashing.
With the above step completed, the signal from the pH
electrode and the set value are memorized.
. With all the above steps completed, the calibration of
an electrode is completed.
F U N C
SPAN
F U N C
PB
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
PB
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
PB
PB
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET
spm
pH
Hi
Lo
-
- 40 -
z Press the key to call up parameter ZERO.
x Disconnect the wire once before connecting an ORP
electrode or after connecting it and short-circuit the
terminals GLASS and REF on the terminal block.
c Press the key to make the highest digit flash.
Wait for about 1 to 2 minutes before pressing the
key.
indicates blinking of the display.
v Press the key to return to normal display
(measurement status). Connect the ORP electrode and
measure the voltage of the quinhydrone standard liquid.
b Wait for 1 or 2 minutes. Then read the indicated
voltage.
Confirm that the indicated value is at 260±20 mV.
z In the case of the CD type unit, setting of the cell
constant of the conductivity sensor is made instead of
calibration.
First, press the key to call up parameter CELL.
x Check the cell constant specified for the conductivity
sensor to be used. Press the key to make the
highest digit flash. Pressing the key while the
digit flashes increases the value by 1. Pressing the
key then moves the flash to the next digit.
indicates a blinking of the display.
c Press the key to enter the value. The display
stops flashing.
Warning
The cell constant, being a unique value of a sensor, varies
with the type of sensor. Never forget to set the constant
prior to the measurement of conductivity. Measuring
conductivity without setting the constant may cause a
malfunction or a display error.
F U N C
PB
MAN
ZERO SPAN
AUTO °C ALMSET
spm
mV
Hi
Lo
PB
MAN
ZERO SPAN
AUTO °C ALMSET
spm
mV
Hi
Lo
PB
MAN
ZERO SPAN
AUTO °C ALMSET
mV
Hi
Lo
MAN
ZERO SPAN
AUTO °C ALMSET GAIN
spm
mV
Hi
Lo
PB
MAN
CELL SPAN
AUTO °C ALMSET
spm
mS/cm
Hi
Lo%
PB
MAN
CELL SPAN
AUTO °C ALMSET
spm
mS/cm
Hi
Lo%
PB
MAN
CELL SPAN
AUTO °C ALMSET
spm
mS/cm
Hi
Lo%
F U N C
-
- 41 -
v The temperature compensation coefficient is set at
2%/°C for standard operation.
■ Handling instructions for pH/ORP electrodes and conductivity sensor
• Refer to the "Wiring" section and make sure to carry out calibration with the standard liquid.
• Electrodes are vulnerable to impact. They may be damaged if dropped or knocked against another part. Handle the
electrodes carefully.
• Special considerations and/or measures may be necessary when installing the electrode under such conditions as
described below.
z Position where bubbles are generated.
x Measurement of liquid which contains slurry.
c Electrolyzed liquid
v Connection or extension of wire when the electrode is distanced from the pump unit
• Clean the pH electrode periodically (once a month or more frequently). Use water to wash the electrode as a
general rule. When dirt adheres to the electrode stubbornly, use 1N (specified) of hydrochloric acid or nitric acid.
Warning
Abrasive force at any degree of strength applied on the electrode may scratch the surface, which will affect measuring
accuracy or lower the speed of response. Use a soft cloth to wipe the surface of the electrode if stains or dirt are difficult
to remove by washing.
• Clean the ORP electrode periodically (once a month or more frequently). Use water to wash the electrode as a
general rule. When dirt adheres to the electrode stubbornly, use 1N (specified) of hydrochloric acid or nitric acid.
Furthermore, if the stain or dirt is difficult to remove by washing, use a soft cloth to wipe the metallic surface on the
end of the electrode.
• Refer to the "Wiring" section and set the cell constant to the value specified on the sensor before use.
• The cable of the sensor must not be extended or cut short. Changing the cable length may change the cell constant
to finally result in a measurement error.
• Rotate the cover on the top of the sensor to remove it. Then, wash the sensor with water. If stain or dirt is difficult
to remove by washing with water, wipe the electrode with a soft cloth soaked in neutral detergent and wash it again
with water.
PB
MAN
CELL
AUTO °C ALMSET
spm
mS/cm
Hi
Lo%
-
- 42 -
V. Setting of parameters and operation mechanism
■ Setting of parameters and operation mechanism (PH model)
• Operation mechanism
• The stroke rate of the pump is represented by the real line in the figure above. The range of proportional control
is called proportional band (PB). The spm value indicates the max. stroke rate of the pump. In the example
above, the stroke rate is fixed at 300 spm for the pH values at or lower than 2.50. The PB value is assumed to be
added to the SET value, which increases the stroke rate in the figure above as the pH measurement decreases.
For example, the stroke rate for the measured value 4.00 pH stands at 120 spm.
• The parameters are set before shipment from the plant. Set them to the required values in accordance with the
application purpose before use.
• If the measurements exceed the value set for Lo or Hi, the alarm function runs with display and/or alarm output
(optional function). The values for Lo and Hi can be set as required upon the condition, however, a setting of
Lo>Hi should be avoided.
• When the measured value is at or lower than the Lo set value:
The display ALM is lit and Lo flashes.
spm360
270300
180
90
0 2 45
6 7 8 10 12 14pH
Parameterq SETw PBe spm Lo Hi
5.00pH-2.50pH300spm2.00pH
12.00pH
e
w
q
2.5
-2.50
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
-
- 43 -
VI. Other Display Messages and Special Procedure
■ Error messages
If any value out of the permissible set value range is
entered by mistake, error indication ( 'E_ST' ) will be
displayed for 5 seconds and the value valid before the
setting change step will be resumed. Carry out value
changing step for a correct value.
• If 0.00 or -0.00 is specified for the setting of parameter
Pb, "E_Pb" will flash for 5 seconds. Then, the value
registered in the previous setting will be displayed.
Then, carry out the set value changing step for the
correct value (only in the AUTO mode).
■ How to select the content of display
This control unit can display pH value, voltage (mV), conductivity (mS/cm), stroke rate (spm), and temperature (°C)
(PH type and CD type only).
z While holding key down, press the key.
The currect measured value starts flashing.
x Press the key next to make the temperature
display 'ºC' flashing. (No temperature display is
available with OR type.)
indicates blinking of the display.
F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
AUTOMAN
ZERO SPAN
°C ALMSET PB
spm
mS/cm
Hi
Lo
STARTS T O P F U N CSTARTS T O P F U N C
-
- 44 -
c Press the key again to display stroke rate in flash
mode.
The above display contents are shown alternately every
time the key is pressed.
v With the desired display presented, press the key
to register it.
• When stroke rate is display in 'spm'
The pump is equipped with stop function whith
temporarily stops the pump operation upon receiving
contact signal from outside. When this function is
activated and only if the stroke rate is displayed, the
display as shown below is presented.
* Note that you cannot operate the key when the
stop function is activated by the external contact signal.
■ Special procedure
When the display is not in flash mode, pressing the key for more than one second will turn the parameter display
back to the basic display (selected display content) in the current mode 'MAN' or 'AUTO'. This procedure is employed
when the parameter should be reset or when only one parameter should be changed with call-up for all the other
parameters canceled.
F U N C
STARTS T O P
F U N C
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
Hi
Lo
OPENCLOSE
ON
PUMP
Contact
spm
pH
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
*
STARTS T O P F U N CSTARTS T O P F U N C
MAN
ZERO SPAN
AUTO °C ALMSET PB
spm
pH
Hi
Lo
-
- 45 -
MAINTENANCE
1. Maintenance and Inspection ........... 46
2. Causes of Trouble and Troubleshooting................................ 47
3. Disassembly and Reassembly ..........48
4. Accessories.......................................52
5. Names of Parts and ExternalDimensions .......................................53
-
- 46 -
■ Daily check
While the pump is in operatior, pay attention to the following points. If anything is out of order, see 'Causes of
Trouble and Trouble shooting' on page 46 and deal with it appropriately. When any of the parts is due for replacement,
replace them with a new ones.
1. Maintenance and Inspection
Part QuantityReplacement
TimeRemarks
Valve set
Diaphragm
O ring
2 sets
1
*
Approx.8,000 hrs.
* For number, see "Names of Parts and Structure ".
No. Check Point Detail/Remedy Checking method
1 Does pump lift liquid
normally?
• Is liquid normally fed?
• Is suction pressure/discharge pressure at
normal level?
• Has liquid undergone quality change,
crystallization, or solidification?
• By flow meter or visual
• Check nameplate.
• Visual
2 Abnormal noise or
vibration?
• Abnormal functioning of pump may cause
abnormal noise or vibration.
• Visual and aural
3 Is there liquid or air
suction in any joint of
pump or piping?
• Tighten leaking joint.
• Excessive air bubbles in discharged liquid
mean air is sucked into system.
• Visual
s The durability of the expendable parts depends on the pressure, temperature, and properties of the
liquid handled. The value in the above table were obtained from a continuous test run of the pump
using clear water at room temperature. Take it as a guideline for replacement.
s The valve set illustrated above is applicable to VC, VH, PC and PH types only.
■ Expendable parts
-
- 47 -
Cause
● Faulty wiring or breakage.● Lowered voltage.
● Damage to electronic circuit of controlunit.
● Air sucked in from suction piping.● Valve gasket not installed.● Valve set fitting in wrong direction.● Pump is air-locked.● Pump stroke length is too short.
● Suction or discharge side valve cloggedwith foreign matter.
● Adhesion of valve onto valve seat.
● Suction or discharge side valve cloggedwith foreign matter.
● Air trapped in pump.● Overfeeding.● Diaphragm out of order or damaged.
● Valve CS or fitting insufficently tightened.● Pump head in sufficiently tightened.
● Diaphragm is damaged.● O ring and valve gasket not installed.
● Power supply cord is routed in a wrongway.
● Stained electrode.● Scratch, crack, deterioration on electrode.
2. Causes of Trouble and Troubleshooting
Trouble
Pump does not start.
No liquid flow.
Discharge fluctuates.
Liquid leaks.
Measured value fluctuatesconsiderably.
Measuring response is extremelypoor.
Troubleshooting
K Correct wiring.K Find cause and raise voltage
to rated level.K Replace electronic circuit.
K Rectify piping.K Install it.K Reassemble it.K Bleed air.K Drive pump with 100%
stroke length. Then resetstroke length.
K Disassemble, inspect, andclean.
K Disassemble, inspect, andclean.
K Disassemble, inspect, andclean.
K Bleed air.K Install check valve.K Replace it.
K Tighten it.K Tighten it. Clamping torque:
2.16 N·m {22 kgf·cm}.K Replace it.K Install them.
K Change cord routing.
K Clean electrode.K Replace electrode.
-
■ Disassembly and Reassembly of Pump UnitBefore disassembly the pump unit, as a safety measure, turn the power off and lower the pressure in the pump to
atmospheric pressure. Then, remove the piping and disassemble the pump unit with reference to 'Names of Parts and
Structure of Pump' on page 53.
■ Replacement of Valve Sets
z Removal of the discharge side valve
q Loosen the fitting nut and detach the tube
connected with the pump, paying attention to
the residual liquid in the pump.
Warning
Some types of liquid may be harmful to the human
skin and pump parts. If your hand or parts of the
pump are exposed to the liquid, wipe it off
thoroughly.
w Rotate the locknut counterclockwise while
lifting it up by hand and detach the air vent
unit A.
e Loosen air vent unit B by means of a wrench
and detach it. Then, take the valve set out of
the pump head.
• In the EH-B30, C30, C35 or FC type pump,
loosen the connecting port by means of a
wrench and detach it. Then, take the valve
set out of the pump head.
x Removal of thesunction side valve set
q Loosen the fitting nut and detch the tube.
• Be careful of the residual liquid.
w Loosen the fitting by means of a wrench and take the valve set out of the fitting.
• If scratches or wear and tear are found in the removed valve set, replace it with a new one.
- 48 -
3. Disassembly and Reassembly
4
5
-
- 49 -
For reassembly, follow the steps of disassembly in
reverse, paying attention to the following points.
• Order of arrangement and direction of insertion
of valve set:
An errer in the order of arranging a valve set or
in the direction on its insertion will cause
defective liquid feeding (leaking or a decrease in
discharge).
• Make sure to insert the O rings.
z Assembly of suction side valve set
Fit the valve set into the fitting, and screw the
connecting port into the pump head by hand.
Next, tighten the connecting port about a 1/4
rotation by means of a wrench.
x Assembly of discharge side valve set
Fit the valve set into the pump head. Insert the
lock nut into the air vent valve B and tighten the
locknut.
■ Air vent assemblyUse a wrench to loosen the lock nut. Since the air
vent valve can be rotated 360 degrees, the tube
connection position can be selected freely to satisfy
your requirements. The lock nut shall be loosened
to make sure that the tube is not positioned over the
pump head. Then, fix the position by fastening the
lock nut. When fastening the lock nut, hold the air
vent valve A with your hand and rotate the lock nut
clockwise when viewed from above the pump unit
by hand. Then, use a wrench to rotate the lock nut
about 1/4 turn for further tightening.
Air vent unit A
Lock nut
Pump head
• Order of Valve set arrangement
6
1411131211131217
1714111312111312
3
4
-
- 50 -
■ Replacement of diaphragm
z Set the stroke length adjusting dial at 100%.
x Remove the pump head from the pump unit by loosening the four hexagon socket bolts with a hexagon bar wrench.
c Hold the periphery of the diaphragm and rotate it
counterclockwise to detach it from the plunger
pin. (The diaphragm is screwed onto the plunger
pin.)
• In some cases, a certain number of diaphragm
spacers are inserted behind the diaphragm and
the retainer for the purpose of positioning. Be
careful not to lose them when replacing the
diaphragm.
For reassembly, follow the steps of disassembly in
reverse, paying attention to the following.
z Firtst, make sure that the stroke length of the
pump is set at 100%.
• Start up the pump for setting the stroke length.
Then, stop the pump and turm the power off.
x Insert the retainer and diaphragm spacer(s) onto
the threaded part of a new diaphragm and screw
the plunger pin into it.
• Fit the concave side of the retainer onto the
threaded part of the diaphragm.
c Attach the pump head(1) to the pump body by
tightening the hexagon socket bolt.
(Clampimg torque: 2.16N·m {22kgf·cm})
Pump head
Plunger Pin
Diaphragm spacer
Retainer
Diaphragm
-
- 51 -
■ Detachment of Control Unit* Do not detach the control unit from the pump drive unit unless unavoidable.
q While operating the pump, rotate the stroke length adjusting dial to 0% reading, then stop the pump and turn off the
power swtich.
w Next, wait for about one minute and pull out the dial. Then unscrew the control unit setscrew with a Philip
screwdriver. Finally, pull up the control unit out of the pump unit.
-
- 52 -
4. Accessories
■ Specification of check valve, back pressure valve (Optional Items)
Type
SetPressure
MPa{kgf/cm2}
Diameterof Fitting
mm
Materialof Liquid
ContactingParts
Applicable Pump
Material Codeof Liquid
ContactingParts of Pump
CA-1V-4 ◊ 6CA-1E-4 ◊ 6CA-2V-9
CA-2E-9
CA-2VL-9
CA-2EL-9
CA-1VC-4 ◊ 6CA-1VE-4 ◊ 6CA-1VC-6
CA-1VE-6
CA-2VC-9
CA-2VE-9
CA-2VCL-9
CA-2VEL-9
BVC-1VV-4H
BVC-1VV-9H
0.17 ± 0.04{1.7 ± 0.4}
0.17 ± 0.04{1.7 ± 0.4}
0.2 ± 0.02{2 ± 0.2}
+0.04-0.03+0.4-0.3
+0.04-0.03+0.4-0.3
+0.02-0.01+0.2-0.1
ø 4 ◊ ø 6
ø 4 ◊ ø 6
ø 4 ◊ ø 6
ø 6 ◊ ø 8
ø 9 ◊ ø 12
ø 9 ◊ ø 12
ø 9 ◊ ø 12
GFRPP
PVC
PVC
EH-B10·15·20EH-C15·20
EH-B10·15·20EH-C15·20
EH-B10·15·20EH-C15·20
EH-B30EH-C35
EH-B30EH-C35
EH-C30
EH-C30
EH-C30
EH-B30EH-C35
PC
PH
PC
PH
PC
PH
VC
VH
VC
VH
VC
VH
VC
VH
VC
BVC-1TV-4H
BVC-1TV-10H
0.2 ± 0.02{2 ± 0.2}
0.10{1.0 }
0.10{1.0 }
0.05{0.5 }
0.05{0.5 }
+0.02-0.01+0.2-0.1
ø 4 ◊ ø 6
ø 10 ◊ ø 12PVDF
EH-B10·20EH-C20
EH-C30
EH-C35
FC
-
- 53 -
■ Exploded View
5. Names of Parts and External Dimensions
Air vent assembly
Control unit
Pump proper
Valve set
(PW-SW)
Valve set
Body of pump
Terminal box Cable gasketBlind cap
Cable nut
Gasket
Body of controller
Retaining screw
Cap
Stroke lengthadjusting dial
Key protectorCap
connector
-
■ Pump Unit• EH-B10, B15, B20, C15, C20 Types
• EH-B30, C30, C35 Types
- 54 -
No. QuantityName1 1
1
1 (2)
3 (2)
1(0)
1(0)
1
1
1
1(0)
4
4
4
2
2
1
4
1
1
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
22
23
24
25
Pump head
Bracket
Connecting port
Fitting nut
Air vent unit A
Lock nut
Diaphragm
Insert bolt
Retainer
Air vent unit B
Valve guide
Valve seat
Valve ball
Valve gasket
O ring
Diaphragm spacer
Hex socket bolt(with spring washer and plate washer)
Diaphragm seal
Air vent adjusting screw
Adjusting screw nameplate
O ring
The figures in parentheses indicate quantitiesin the cases of the EH-B30, C30, and C35 types.
-
- 55 -
• E