service manual mco-5ac

Service Manual CO2 Incubator

MCO-5AC

FILE No.

SM9910037

Contents

Page

Features 1

Structural specification 2

Performance specification 3

Control specification 4

Dimensions 5

Electrical parts 7

Temperature calibration 8

CO2 Calibration 9

CO2 zero adjustment 9

Control specification 10

Wiring diagram 21

Circuit diagram 22

Components on P.C.B. 23

Connection on PCB 24

CO2 gas circuit 25

Instructions on replacing CO2 sensor and main P.C.B. 26

Prevention of contamination 27

Specification of sensor 28

Parts layout 29

Test data 31

UV lamp (MCO-18UVS2) installation procedure 35

How to replace water level sensor 39

Automatic gas switcher (MCO-5GC) mounting procedure 40

Stacked module 43

Instruction Manual 44

Effective models

This service manual is effective following models.

Model name Model code Voltage and Frequency

MCO-5AC 823 282 51 110-120V 60Hz

823 282 52 220V 50Hz

823 282 53 220V 60Hz

823 282 54 220-240V 50Hz

1

Features

1. Easy operation & smaller installation space

This small sized cabinet can be stacked. (548mm of its depth)

Usable height (only 1704mm height) even if stacked 3 units.

Selectable right or left-hand door.

(Please consult with your service representative.)

Air-jacket type is suitable for the maintenance.

Control panel is fitted on the outer door surface and it has a wide digital display

and a large keypad.

Inside chamber wall made by stainless steel and its corner made rounded type,

cleaning easier.

2. Internal temperature & internal humidity recovery characteristics

Original Direct Heat & Air (DHA) jacket system

3. Anti-bacteria SUS

Inside chamber (except for humidifying pan) material is made by anti-bacteria

SUS.

4. A new ROM installed

A new ROM version installed to set Communication system optionally.

5. Validation

Display Zero Adjustment and Span Adjustment can be operated on the control

panel.

Note ; Model name

M CO – 5 A C

C: Copper alloy anti-bacteria stainless steel

A: Air jacket

5: Chamber capacity (50L)

CO: CO2 Incubator

M: Medical equipment

5

Dimensions

19

14. Ring back

When the apparatus falls into alarming, BZ key should not be pressed by someone to be

buzzer/remote alarm action inoperative.

Function:

1. Buzzer comes back after Ring Back setting time was passed even if buzzer is

stopped sounding by pressing BZ key.

2. Remote alarm action is not cancelled by pressing BZ key.

3. Alarm indication on the control panel is keep displaying.

<Alarm operation specification>

Status

Auto-recovery 30min.

(F25=030)

Auto-recovery inoperative

(F25=000)

Alarming Press BZ key to solely stop buzzer sounding.

Remote alarm and alarm on the control panel keeps activating.

When recovery to normal Alarm stand-by

When alarm comes back again, buzzer and remote alarm are

operative, alarm can be displayed on the control panel.

When alarm keeps

activating after the setting

time has passed

Buzzer recovers after 30minutes

passed since BZ key was

pressed.

Buzzer does not sound unless

alarm keeps activating even

though BZ key is pressed.

Remote alarm and alarm on

control panel are keep

activating.

<SV and buzzer recovery time>

SV Buzzer recovery time after buzzer is stopped

sounding by pressing BZ key.

000 Buzzer does not sound

010 Approx. 10min.

020 Approx. 20min.

030 Approx. 30min.

040 Approx. 40min.

050 Approx. 50min.

060 Approx. 60min.

<Special mode>

Remote alarm action is interlocked with buzzer by function code setting.

The function code must not be opened to prevent remote alarm action changed easily.

Remote alarm action setting

Buzzer independent

(initial setting)

(F24=000)

Buzzer interlocked

(F24=001)

Auto recovery

(F25=030)

Buzzer auto recovered

Remote alarm keeps

activating

Buzzer auto recovered

Remote alarm auto

recovered

Buzzer setting Not auto recovered

(F25=000)

Buzzer is not auto

recovered

Remote alarm keeps

activating

Buzzer is not auto

recovered

Remote alarm is not

auto recovered

SV Remote alarm action

000 (initial setting) Not interlocked with buzzer

001 Interlocked with buzzer

21

Wiring Diagram

22

Circuit Diagram

23

Components on P.C.B.

25

CO2 gas circuit

Rear view

Filter

CO2 supplied

CO2 valve

Sample port

29

Parts Layout

Handle (removable)

Sample air outlet cap

Connecting port for CO2 gas pipe

Access port

30

Filter Connecting port for CO2 gas pipe

CO2 valve

Access port

Fan motor

Remote alarm terminal

Main PCB

343434

3636

6. Replace the duct. Place the humidifying tray,

then cover the tray with the humidifying tray

cover as shown in Fig. 5

7. Replace the insulation into the UV lamp lead wire

hole with the wire passed through the cut on the

insulation. See Fig.6

Fig.6

Fig.5

Humidifying tray cover

8. Remove a cap shown in Fig. 7.

By using 4 screws enclosed with this kit,

fix the ballast/glow assy as shown in Fig. 7.

Fig.7

Cap

③Screw

⑤Ballast

④Glow assy

37

9. Connect each lead wire connector of ballast/glow assy, as shown in Fig. 8.

10. Attach the labels.

* For nameplate, use MCO-5AC(UV) label on MCO-5AC.

Fig.9

Fig.8

GREEN

BLUE Cover

Connect after removing

the cover.

38

11. Set the UV lamp ON period through control panel

When using UV lamp option, it is needed to set the UV lamp ON period. Refer to the following

procedure.

Description of operation Key

operated

Indication after operation

1 Turn the power switch ON.

-

The current chamber temperature is

displayed.

2 Press CAL key for 5 seconds. CAL The left digit in the temperature indicator is

flashed.

3 By pressing key and

key, set the figure to F01.

4 Press ENT key.

ENT

In CO2 density indicator,

"000" is displayed and the

right digit is flashed.

5 By pressing key and

key, set the figure to 005 (5

minutes of ON period).

6 Press ENT key.

ENT

The setting of UV lamp ON time is

memorized and the current chamber

temperature is displayed.

<<NOTE>>

• The UV lamp ON time is settable between 0 to 30 minutes. However, it is recommended to set 5

minutes in general.

• The UV lamp ON time is settable between 0 to 30 minutes (000 to 030). The UV lamp is not

turned ON if the setting is 000.

• The UV lamp is turned off when the outer door is opened while the lamp is on. The lamp is

turned on for pre-set duration after the outer door is closed.

• The condensation in the chamber can be caused and/or the chamber temperature distribution can

be affected due to the heat from UV lamp when the setting of UV lamp ON time is longer than 5

minutes or the only the outer door is opened/closed repeatedly. In such case, the life of UV lamp

is shortened.

• In the procedure 2 above, pressing CAL key for 5 seconds causes the calibration mode. In this

mode, it is possible to calibrate the temperature and CO2 density, and miss operation of the key

may affect the basic performance of the unit. Take care of the key operation. Even if the key is

operated wrongly, the unit returns to the current value display mode automatically when no key is

operated for 90 seconds. In this case, the setting not entered by pressing ENT key is not

effective.

12. Check that the UV lamp is turned on.

Check the UV lamp is turned on by the following procedure:

Procedure

1 Open the outer door and push the door switch with the inner door is closed.

2 Check that the UV indicator on the control panel is on after a few seconds.

3 Check the visible blue light from the front side of the humidifying pan cover.

(Check the light with the inner door closed. Never look at the UV light directly.)

F 0 1

F 0 1 0 0 0

F 0 1 0 0 5

7FB6P104048000

39

HOW TO REPLACE WATER LEVEL SENSOR

1.Unplug the unit and check that power is not supplied

to the unit, then take the rear cover off.

2.Unfasten the connectors for lead wire and take out

the insulation for the lead wire hole.

3.Take out the duct from inside.

4.Unfasten the 2 screws to remove unit of water level

sensor and installation grommets for water level sensor.

5.replace water level sensor.

Note Be sure to set the water level sensor to the right

direction. (See Fig.3)

6.Place back the water level sensor, Water sensor

installation grommet as before.

7.Place back the insulation material to the hole for the lead

wire.

Note Be careful for the length of lead wire for water level

sensor inside the unit Length is connect 2nd binder

is located where it touches the water level sensor

grommet.

(See Fig.4)

3.Put the rear cover in place.

Fig.1

Fig.3 (front)Fig.4

Water level sensor

Fig.2

screw

Water level sensorInstallation grommet

Sensing area

41

Setting procedure of Control panel.

When use MCO-5GC(the automatic switcher of CO 2 gas supply line),it is necessary to set the

MCO-5AC automatic gas switching mode according to the following procedures.

Description of operation Key

operated

Indication after operation

1 Turn the power switch ON.

-


displayed.

2 Press CAL key for 5 seconds.

CAL

The left digit in the temperature indicator

is flashed.

3 By pressing key and key,

set the figure to F03.

4 Press ENT key.

ENT


"000" is displayed and the



set the figure to 384

6 Press ENT key.

ENT


displayed.

7 Press CAL key for 5 seconds.

CAL

The left digit in the temperature indicator

is flashed.


set the figure to F08

9 Press ENT key.

ENT


"0**" is displayed and the



set only the left digit figure to 1.

NOTE:Don't change center

digit figure and right

digit figure.

"＊" means "0" or "1".

11 Press ENT key.

ENT

Setting of MCO-5GC is finished.


displayed.

CO2 gas supply line indicator A is lighted.

F 0 3

F 0 3 3 8 4

F 0 8

F 0 3 0 0 0

F 0 8 0 * *

F 0 8 1 * *

42

Procedure for automatic gas switching operation check.

When the installation of MCO-５GC is completed, check the automatic gas switching operation

according to the following to the following procedures.

procedure

1 Stop the gas supply of cylinder A and use cylinder B only for CO2 gas supply.

2 Turn on the power switch of MCO-５AC and set 37decC and 0%.

Turn on CO2 gas supply line indicator with CO2 gas supply line switching key.

3 Wait for approx.1 minute until CO2 control is available.

(It takes about 1 minute until CO2 control is effective after power ON.)

4 Set the CO2 density to 5% and check CO2 inject lamp lights.

NOTE: CO2 inject lamp may not light depending on the temperature, humidity or

CO2 density in the chamber. In this case, set the CO2 density 1% or more

higher than the displayed value.

5 Check the E01(CO2 gas cylinder empty alarm) and buzzer turn on about

2-7minutes later from the CO2 inject lamp's turning on.

6 Check the CO2 gas density indicator reaches to the set value 5% and keep it

stably.

NOTE: CO2 density control is interrupted when automatic calibration of CO2 sensor

is activated and the decimal point of CO2 density indicator blinks.

7 This is the end of check procedure.

Press the buzzer key to disappear “E01” and select the cylinder A with CO2 gas

supply select key.

Set the CO2 density to 0% and open the door to release the CO2 gas completely.

After the chamber temperature and humidity are stable, set the CO2 density to

desired value.

Refer to the MCO-５AC instruction manual for usage of MCO-５GC

7FB6P104047000

43

Stacked module

This unit can be stacked by using the stacking kit. Following shows the procedure for stacking the unit.

Consult with a Sanyo representative or agent prior to stacking procedure as such work involves dangers.

WARNING

Select a level and sturdy floor having enough strength for installation of stacked module.

Never stack 4 or more units.

Take care not to drop or tip over the unit when stacking as this can cause injury or damage of the

unit.

1. Turn off the power switch and disconnect a plug of each unit.

2. The stacking plate A and B are contained in accessories bag.

Note: When stacking the unit, 2 stacking plates A and 2 stacking plates B are necessary.

3. Check that the lower unit is level.

4. Remove two caps at 2 locations on the top front of under unit, and apply the protective sticker enclosed

with the unit at each corner on the top of the lower unit to avoid scratches or damage(Fig.A).

5. Fix the stacking plate A at 2 locations on the top front of the lower unit by using 2 screws contained in

accessories bag.

6. Remove the front panel on the upper unit by unscrewing the 4 fixing screws and then disconnect the

wires and gas tube.

7. Stack the unit so that both units can be aligned straight. Also check the upper unit is level. If it is not

level, keep the unit even by adjusting the leveling legs.

8. Secure the upper unit with the stacking plate A and 2 screws contained in accessories bag.

9. Remove 2 screws on the above right and left on the rear side of the lower unit.

10. Remove 1 screw on the bottom right and left on the rear side of the upper unit.

11. Fix the stacking plate B at the right and left on the rear of the lower and upper unit with 3 screws

removed in step 9 and 10.

12. Replace the front panel on the upper unit after connecting the wires and gas tube.

13. Repeat procedures from step 3. when stake more.

14. Fix the stacked unit to the wall with 2 stacking plate B on the rear of the top unit and rope or chain.

Front panel

Stacking plate A

Protective sticker

Stacking plate B

Fig.A ＜View from quarter rear side＞

service manual mco-5ac

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