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Donaldson Company, Inc. © 1995 1

Torit® Installationand Operation Manual

FOR TORIT FILTER CARTRIDGE SYSTEM DUST COLLECTORSTorit Downflo® Models SDF–2, SDF–4, SDF–6

Includes Installation, Operation, and Service Instructions

IOM-46740-00Revision 5

WITH QUICK-CHANGEULTRA-WEB® II

FIBRA-WEB®

ULTRA-TEK®

FILTER ELEMENTS

This manual contains specific precautionary statements relative to workersafety in appropriate sections. Read this manual thoroughly and comply asdirected. It is impossible to list all of the potential hazards of dust controlequipment. It is imperative that use of the equipment be discussed with a Toritrepresentative. Personnel involved with the equipment or systems should beinstructed to conduct themselves in a safe manner.

IMPORTANT

2 Donaldson Company, Inc. © 1995

TORIT PRODUCTS is the leading designer andmanufacturer of dust collector systems for thecontrol of industrial air pollution. Its systems aredesigned to help reduce occupational hazards,lengthen machine life, reduce in-plant maintenancerequirements, and improve product quality.

CAUTIONApplication of Dust Control Equipment:

• Special care must be exercised in the use ofdust collection equipment when combustibleequipment, such as buffing lint paper, wooddust, aluminum, and magnesium are present.These materials may present a fire orexplosion hazard. A prudent user of Toritequipment should consult and must complywith all National and Local Fire Codes and/or other appropriate codes when determiningthe location and operation of dust collectionequipment.

• Under no conditions should anyone, includingthe machine operator, be allowed to putburning objects or lit cigarettes into the hoodor ducting of any dust control system.

• Avoid mixing combustible materials withdust generated from grinding of ferrousmetals due to the potential fire hazard causedby sparks being pulled into the dust collectionequipment.

• When collection equipment is used to collectflammable or explosive dusts, the dust

collection equipment should be locatedoutside the building. Also, an installer offire extinguishing equipment, familiar withthis type of fire hazard and local fire codes,should be consulted for recommendationsand installation of the proper fireextinguishing equipment. Torit equipmentdoes NOT contain fire extinguishingequipment.

• Explosion relief vents are required on someapplications. Consult with an insuranceunderwriter or a NFPA Manual todetermine proper vent sizing requirements.Vents installed on dust collection equipmentwithin a building must relieve to the outsideof the building to minimize chances of asecondary explosion. Consult the properauthority to determine proper method ofventing the dust collection equipment. Toritequipment does NOT contain explosionrelief vents, except on special order.

• To insure optimum collector performance,always use Torit-Built® replacementfilters.

NOTE CAUTION

Statements indicate precautions necessaryto avoid potential equipment failure. Statements indicate potential safety hazards.


Customer Name

Address

Shipping Date Installation Date

Model Number Serial Number

Filter Medium

Accessories

Other

Data Sheet

Table of Contents2.6 Electrical Installation ............. 20-23,29-302.6.1 Electrical Operation ............................ 302.6.2 Checker™ Board, Diagnostics and

Control Panel Specifications ............... 302.6.3 Solid State Control Timer

Specifications ................................... 30-312.6.4 Magnehelic®* Gage ............................ 312.6.5 Torit ∆P Control .............................. 33-352.6.6 Photohelic®* Gage .............................. 372.7 Compressed Air Supply Installation.... 382.7.1 Air Manifold Assembly ....................... 392.7.2 Blower Compartment ......................... 392.7.3 Dust Storage Compartment ................ 394.0 Start-up ............................................... 395.0 Operating Adjustment ........................ 405.1 Checker Board .................................... 405.2 Solid State Control Timer ................... 405.3 ∆P Control Calibration ....................... 415.4 Outlet Damper Adjustment ................. 415.5 Operating Checks ............................... 416.0 Service ................................................ 426.1 Filter Element Removal ...................... 426.2 Filter Element Installation ................... 426.3 Bag-Out Filter Element Removal ..... 42-436.4 Dust Removal Dust Container ........ 43-446.4.1 Dust Removal—Hopper Model .......... 446.5 Compressed Air Components ............. 456.6 Electrical Service ................................ 457.0 Troubleshooting Guide .................... 46-52

Parts Ordering Information ................ 54Warranty ............................................ 54

Notes and Cautions ............................. 2Data Sheet ........................................... 3Figures ................................................. 4

1.0 Introduction ......................................... 61.1 Operational Explanation ..................... 61.1.1 Normal Operation ............................... 61.1.2 Filter Cleaning ..................................... 72.0 Installation ........................................... 72.1 Inspection ............................................. 72.2 Ship Loose Items .................................. 72.3 Equipment/Tools Required ................... 72.4 Assembly of Standard Equipment ........ 72.5 Assembly of Optional Equipment ........ 82.5.1 Compressed Air Inlet Adapter ............. 82.5.2 Leg Levelers ......................................... 82.5.3 Inlet Collar ........................................... 82.5.4 Adapter to Round Outlet ..................... 82.5.5 Adapter Auto-Lok™/Ultra-Lok™ ....... 82.5.6 Adapter HEPA/Activated Carbon ...... 122.5.7 Leg Pack SDF ..................................... 122.5.8 55-Gallon Drum Pack ......................... 142.5.9 5-Gallon Pail Pack .............................. 142.5.10Bin Vent Base Pack ............................. 142.5.11Flex-Trunk™ Assembly

7-Foot/10-Foot SDF ............................ 162.5.12Weather Hood Pack ........................... 162.5.13Explosion Vent Pack ........................... 162.5.14Explosion Vent Cabinet ...................... 20

* Magnehelic and Photohelic are registered trademarksof Dwyer® Instruments, Inc..


FiguresFigure 1 – SDF-4 Phantom View.............. 5Figure 2 – Operational Schematic ............ 6Figure 3 – Compressed Air Inlet Adapter 8Figure 4 – Leg Levelers ............................ 8Figure 5 – Inlet Collar .............................. 9Figure 6 – Adapter Pack to

Round Outlet .......................... 9Figure 7 – Adapter Pack

Auto-Lok/Ultra Lok ................ 10Figure 8 – Adapter Pack HEPA/

Activated Carbon.................... 11Figure 9 – Leg Pack SDF .......................... 12Figure 10 – 55-Gallon Drum Pack &

5-Gallon Pail Pack................... 13Figure 11 – Bin Vent Base Pack ................. 14Figure 12 – Flex-Trunk Assembly

7-Foot/10-Foot SDF................. 15Figure 13 – Weatherhood Pack .................. 17Figure 14 – Explosion Vent Pack ............... 18Figure 15 – SDF-4 with Explosion Vents—

Phantom View......................... 19Figure 16 – Prewired with Checker Board

on Unit .................................... 21Figure 17 – Unwired with Checker Board

on Unit .................................... 21Figure 18 – Prewired with Checker Board

in Remote Enclosure ............... 22Figure 19 – Unwired with Checker Board

in Remote Enclosure ............... 23Figure 20 – Wiring Diagram 575V 60Hz

3PH 3, 5, 7-1/2, 10 hp ............ 24Figure 21 – Wiring Diagram 380V 50Hz

3PH 3, 5 hp ............................. 24Figure 22 – Wiring Diagram 380V 50Hz

3PH 7-1/2 hp ........................... 25Figure 23 – Wiring Diagram 230V 60Hz

3PH 3, 5, 7-1/2, 10 hp ............ 25Figure 24 – Wiring Diagram 200V 50/60Hz

3PH 3, 5 hp ............................. 26Figure 25 – Wiring Diagram 200V

50/60Hz 3PH 7-1/2, 10 hp ...... 26

Figure 26 – Wiring Diagram 460V 60Hz3PH 3, 5, 7-1/2, 10 hp ............. 27

Figure 27 – Wiring Diagram 208 V60Hz 3PH 3, 5, 7-1/2, 10 hp ... 27

Figure 28 – Remote Checker BoardAssembly ................................. 28

Figure 29 – SDF Solid-State Timer WiringDiagram .................................. 29

Figure 30 – Magnehelic Gage .................... 32Figure 31 – Remote-Mounted Magnehelic

Gage ....................................... 32Figure 32 – ∆P Control Display ................. 33Figure 33 – Printed Circuit Board .............. 35Figure 34 – Photohelic Gage ...................... 36Figure 35 – Remote-Mounted Photohelic

Gage ....................................... 36Figure 36 – Photohelic Gage

Wiring Diagram ...................... 37Figure 37 – Air Manifold Assembly ........... 38Figure 38 – Bag-Out Assembly .................. 43Figure 39 – Bag-Out Filter Removal .......... 43Figure 40 – Dust Container Support

System ..................................... 44Figure 41 – Typical Electrical

Component Assembly ............. 45


Figure 1SDF–4 Phantom View

Lifting Eyes

Outlet with Damper

Filter Yoke

Filter Element

Filter WingNut

Legs or Casters

Hinged Accessto ElectricalCompartment

Blower Pack

Screwed-on RearAccess Panel to

Blower Compartment

Air ManifoldAssembly

Screwed-onRear Access

Panel to CleanAir Manifold

Inlet Collar

Venturi

Lift Assembly DustContainer

T–HandleQuick Latch

Hinged AccessDoor to Dust

Container

Tool OperatedFastener

Compressed Air Inlet—1/2 National Pipe

Threads or British PipeThreads

Dust Container

Checker™ BoardDiagnostic andControl Panel

Sprinkler Taps (not shown) (not supplied standard with the SDF)


1.1 Operational Explanation(See Figure 2 Operational Schematic)

1.1.1 Normal Operation

During normal operation, contaminated airenters through the top inlet area and passesdown and through the filter elements. Dust iscollected on the outside surface of the filterelements. The clean, filtered air flows throughthe center of the filter elements and into theclean air plenum, where it exits through theclean air outlet.

1.0 Introduction

The Torit® Downflo® model SDF dust collectoris used for the collection of airborne dust andparticulate. The model SDF collector provideshighly efficient, continuous, on-line dustcollection.

The Torit-Built® filter elements are the heart ofthe model SDF dust collector. These filterelements help ensure that clean air is returned tothe plant environment.

Technical and field support are always availablefrom your local Torit representative anddistributors.

Normal Operation Filter Element Purge

Figure 2Operational Schematic

Dirty Air Inlet Clean Air Outlet

Dirty Air Plenum

Deflector

FilterElements

Filter Section

Dirty Air Inlet

Clean AirPlenum

Fan Outlet

SilencerSection

Blower Pack

CompressedAir Inlet Fitting

(Purge Air)

CompressedAir Manifold

DiaphragmCleaning Air

Valve


1.1.2 Filter Cleaning

Filter elements are cleaned automatically andsequentially. The result is that only one filtercartridge will be off-line for cleaning at anygiven time.

During the filter element cleaning purge, asolenoid valve is energized, causing thecorresponding diaphragm valve to send a pulseof compressed air through the filter element(from the inside outward), removing thecollected dust from the outside surfaces of thefilter element. The dust falls into the dust storagecontainer.

2.0 Installation

2.1 Inspection

The Downflo SDF is normally shipped bycommon carrier and should be checked fordamage that may have occurred en route. Anydamage should be noted and the carrier notifiedimmediately.

2.2 Ship Loose Items

Items shipped loose with the dust collector mayinclude:

• Bag-out Assembly• Inlet Collar• Compressed Air Inlet Adapter• (4) Leveling Mount Foot Pads• (4) Metric Hex Bolts• Hopper• Legs and Crossbracing• Outlet Adapters• Auto-Lok/Ultra-Lok/HEPA/Carbon Filter• Remote Checker Board/

Magnehelic Gage/Photohelic Gage• Slide Gate/55-Gallon Drum Cover Pack• 5-Gallon Pail Pack• Flex-Trunk Assembly• Weather Hood• Explosion Vents

Most cabinets are shipped completely assembledwith the filter cartridges installed.

2.3 Equipment/Tools Required

The following is a list of typical tools andequipment required to install and assemble aDownflo SDF unit.

• Crane/Lift Truck• Pipe Wrenches• Socket Wrenches• Pipe Sealant

2.4 Assembly of Standard Equipment

Remove all crating and strapping from the unit.Remove all miscellaneous parts (bolts, nuts, etc.)before lifting the unit off of the truck. Check theparts received against the packing list. If thereare parts missing, the carrier and your localTorit representative should be notifiedimmediately.

• Connect lifting slings to the four liftlugs on top of the dust collector whenusing a crane to unload the unit.

• Insert the fork under the dustcollector between the casters or legswhen using a forklift truck to unloadthe unit.

NOTEA crane or forklift truck is recommendedfor the unloading of the dust collector.

CAUTION

NOTEIf the lift lugs are removed, they must bereplaced with the four (4) metric hexbolts (provided) before the dust collectoris operated.


Figure 3Compressed Air Inlet Adapter

Compressed Air Inlet

Compressed AirInlet Adapter

Collector

Leg or Caster

Sealant

Figure 4Leg Levelers

LevelingMount Foot

Pad

CollectorLeg

2.5 Assembly of Optional Equipment

2.5.1 Compressed Air Inlet Adapter(See Figure 3 Compressed Air InletAdapter)

The compressed air inlet adapter is used forconverting the compressed air inlet fromNational Pipe Threads to British Pipe Threads.Install the compressed air inlet adapter as shownin Figure 3 Compressed Air Inlet Adapter. Usethread-sealing tape or pipe sealant on thethreaded adapter before screwing it into thecompressed air inlet.

2.5.2 Leg Levelers (See Figure 4 Leg Levelers)

The leveling mount foot pads screw into thebottom of the collector legs as illustrated inFigure 4 Leg Levelers.

2.5.3 Inlet Collar (See Figure 5 Inlet Collar)

Place 1/4" diameter sealant between the cabinetside or top and the inlet collar. Attach the collarusing the eight (8) #6-32 thread cutting screwsprovided.

2.5.4 Adapter to Round Outlet (See Figure 6Adapter Pack to Round Outlet)

Place the 3/16" x 1/2" rubber seal between thecabinet top and the outlet adapter. Attach theoutlet adapter to the cabinet using the clamphook, wing nut, and washer as shown. Thesliding damper will still operate with thisadapter.

2.5.5 Adapter Auto-Lok / Ultra-Lok (See Figure 7 Adapter Pack

Auto-Lok / Ultra-Lok )

Remove the lift lug on the cabinet top andreplace it with the set screw. Place the 3/16" x1-1/4" gasket between the cabinet top and theadapter. Attach the adapter to the cabinet topusing the clamp hooks, wing nuts, and washersas shown. Place the 3/8" x 1-1/4" gasketbetween the adapter and the Auto-Lok or Ultra-Lok filter as shown. Use the 10-24 x 7/16 screwsto attach the filter to the adapter. The slidingdamper will not operate with these adapters.


Wing Nut3/8 Flat Washer

Outlet Adapter

Rubber Seal

Cabinet Top(Ref)

Clamp Hook

Figure 6Adapter Pack to Round Outlet

Cabinet Top or Side1/4" Diameter Sealant

#6-32 Screws Inlet Collar

Figure 5Inlet Collar


Figure 7Adapter Pack Auto-Lok / Ultra-Lok

Auto-Lok /Ultra-LokAssembly

Cabinet Top (Ref)

Adapter

3/16 x 1-1/4 Gasket

3/8 x 1-1/4 Gasket

10-24 x 7/16 Screw

Wing Nut

3/8 Flat Washer

Set Screw

Clamp Hook


Figure 8Adapter Pack HEPA / Activated Carbon

Cabinet Top (Ref)

Adapter

3/16 x 1-1/4 Gasket

Filter Retainer Bar

1/4-20 x 3/4 Bolt

1/4 Flat Washer

1/4 x 3/4Gasket

3/8 Flat Washer

Set Screw

Wing Nut

HEPA /Carbon Filter

Clamp Hook


Figure 9Leg Pack SDF

SDF Base

Crossbrace

Washer

Bolt

Crossbracing

Washer

Bolt

WasherNut

WasherBolt

Washer

Nut

Leg

Crossbrace

Washer

Nut

2.5.6 Adapter HEPA / Activated Carbon(See Figure 8 Adapter Pack HEPA /Activated Carbon)

Remove the lift lug on the cabinet top andreplace it with the set screw. Place the 3/16" x1-1/4" gasket between the cabinet top and theadapter. Attach the adapter to the cabinet usingthe clamp hooks, wing nuts, and washers asshown. Place the 1/4" x 3/4" gasket between theadapter and the HEPA or Activated Carbonfilter as shown. Use the filter retainer bar andthe 1/4" bolts and washers to attach the filter tothe adapter. The sliding damper will not operatewith these adapters.

2.5.7 Leg Pack SDF(See Figure 9 Leg Pack SDF)

The SDF units that are not furnished with a dustcontainer will have an internal hopper with abase to attach to legs and crossbracing.Assemble the legs and crossbracing to the SDFbase as shown in Figure 9 Leg Pack SDF. The55-gallon drum pack leg crossbraces should beinstalled on the three sides only, in order toallow access to the drum. The 5-gallon pail packdoes not require crossbracing.


Figure 1055-Gallon Drum Pack and 5-Gallon Pail Pack

Attach to SDF Base as Shown

5-Gallon Pail PackWith or Without Gate

55-Gallon Drum PackWith or Without Gate

With or Without Latches

SDF Base

1/4" Dia. Seal

Bolts, Washers,& Nuts


Bin Vent Base

1/2" Diameter Holes (28)

Figure 11Bin Vent Base Pack

2.5.8 55-Gallon Drum Pack(See Figure 10 55-Gallon Drum Packand 5-Gallon Pail Pack)

The 55-gallon drum cover and the 55-gallondrum cover with gate can be attached to thebase as shown in Figure 10 55-Gallon DrumPack and 5-Gallon Pail Pack. Use the existingbolts, washers, and nuts that are on the base.Access to the bolts is through the hinged door.Be sure to use sealant to seal between the drumcover and the base.

2.5.9 5-Gallon Pail Pack(See Figure 10 55-Gallon Drum Packand 5-Gallon Pail Pack)

Attach the 5-gallon pail cover and the 5-gallonpail cover with gate as shown in Figure 1055-Gallon Drum Pack and 5-Gallon Pail Pack.

2.5.10 Bin Vent Base Pack(See Figure 11 Bin Vent Base Pack)

The Bin Vent pack for the SDF consists of abase, as shown in Figure 11 Bin Vent Base Pack.The Bin Vent base has twenty-eight (28) 1/2"diameter holes for attachment in the field.


Figure 12Flex-Trunk Assembly 7-Foot/10-Foot SDF

M-6 Thread CuttingBolts (12 Req'd)

M-6 Hex Bolts(8 Req'd)

Detail A

1/4" DiameterSealant

Flex-TrunkAdapter

Use the bolts that areremoved from the cover

plate in Detail A

See Detail A

Flex-Trunk Assembly(7-Foot Shown)

Swivel Base

5/16 Screw5/16 Washer

Cover Plate

~

1/4" DiameterSealant


2.5.11 Flex-Trunk Assembly 7 Ft/10 Ft(See Figure 12 Flex-Trunk Assembly)

Remove the cover plate bolts and the coverplate from either the right or left side of the SDFcabinet. Using the same cover plate bolts, attachthe Flex-Trunk Adapter to the side of the SDFcabinet. Be sure to place 1/4" diameter sealantbetween the adapter and the cabinet, as shownin Figure 12 Flex-Trunk Assembly. Next, attachthe Flex-Trunk assembly to the adapter, beingsure to install more 1/4" sealant between theadapter and the Flex-Trunk assembly. With theswivel base positioned as shown in Figure 12Flex-Trunk Assembly, secure the Flex-Trunk tothe adapter using the four (4) 5/16 slottedscrews and lock washers. For the adjustmentand operation of the Flex-Trunk, see theInstallation and Operation Manual for the Flex-Trunk IOM-40779-00.

2.5.12 Weatherhood Pack (See Figure 13 Weatherhood Pack)

Remove the bolts and the rear access panel tothe SDF. If the SDF is equipped with an outletdamper (see Figure 1 SDF-4 Phantom View), thisdamper must be removed. The weather hoodcannot be used with the outlet damper. Also,remove the lift lug from the corner of the cabinetand replace it with the M-16 set screw provided.Place 1/4" diameter sealant between the cabinettop and the weatherhood. Position theweatherhood over the cabinet outlet, as shownin Figure 13 Weatherhood Pack, and attach theweather hood to the cabinet using the four M-6bolts provided. These bolts should be insertedthrough the slots on the cabinet roof andscrewed into the weld nuts on the weatherhood.Replace the rear access panel and bolts.

2.5.13 Explosion Vent Cabinet (See Figure 15SDF-4 with Explosion Vents—PhantomView)

When explosion vents are furnished on an SDF,a special cabinet is required (see Figure 15 SDF-4 with Explosion Vents—Phantom View). Somefeatures on this cabinet include:

• A hinged access door to the dust containerwith threaded handles and a reinforcingbar.

• Two 1/8" NPT couplings for dirty air (highpressure) and clean air (low pressure)fittings.

• Two 3/4" NPT couplings for electricalconnections.

• Openings for two 12 x 12 explosion vents.

Options available with this SDF cabinet inaddition to the 12 x 12 explosion vents include:

• Explosion-Proof Motors.

• Aluminum Blower Wheels.

• NEMA 9 Explosion-Proof SolenoidEnclosures.

• Checker board in remote enclosure withunwired electrical only.

NOTE• Explosion vent SDF units do not

contain an electrical compartment.They are furnished from Toritunwired.

• All electrical work must be done by aqualified electrician according to localcodes.


Figure 13Weatherhood Pack

Weatherhood

1/4" Dia Sealant

Cabinet Shown withRear Access Panel

Removed

M-6 Bolt

Replace Lift Lugwith Set Screw


Figure 14Explosion Vent Pack

Cabinet (Ref)

SiliconeSealant

12 x 12Weather Cover

1/4" Wide TabUse the bolts that are removed from thecover plate in Detail A.Tighten bolts only until vent flangebegins to deform. Do not overtighten.

Hex Bolt

12 x 12 Explosion Vent

Lock Washer

Hex Nut

12 x 12Explosion Vent

Detail A

Remove cover plate.

Remove all bolts on cover plate andsave the bolts for attaching theexplosion vents to the cabinet.

See Detail A


Figure 15SDF-4 with Explosion Vents Phantom View

Outlet with Damper

Filter Yoke

Filter Wing Nut

Inlet Collar

Hinged AccessDoor to Dust

Container

Lift Assembly Dust Container

Legs

Compressed Air Inlet—1/2 National Pipe

Threads or British PipeThreads

Dust Container

Blower Pack

Screwed-on RearAccess Panel to

Blower Compartment

Lifting Eyes

Opening forExplosion Vents

1/8 NPT Coupling(High Pressure)

1/8 NPT Coupling(Low Pressure)

3/4" NPTCouplings for

ElectricalConnections

Air ManifoldAssembly

Screwed-onRear Access

Panel to CleanAir Manifold

Filter Element

Venturi

Sprinkler Taps (not shown) (not supplied standard with the SDF)


2.5.13 Explosion Vent Pack(See Figure 14 Explosion Vent Pack)

Remove the cover plate bolts and the cover platefrom the side of the SDF cabinet. Using the samecover plate bolts, attach the 12 x 12 explosionvents to the side of the SDF cabinet. Be sure toapply silicone sealant between the bolted flangesand the cabinet, as shown in Figure 14 ExplosionVent Pack. Tighten the bolts only until the ventframe flange starts to bend. Do not overtighten.

The 12 x 12 weather cover should be used foroutside applications. Apply silicone sealant onlyalong the bolted flange of the weather cover.Attach the weather cover to the explosion ventflange using bolts, lock washers and nuts asshown. Also bend the 1.4 inch wide tab 180degrees over and press firmly against theexplosion vent frame. Do this on both sides ofthe weather cover.

For operating precautions, technical data andrearming instructions for the explosion vents, seethe Torit Explosion Vent ManualIOM-72087-01.

2.6 Electrical Installation

The Downsized Downflo dust collector isavailable with four versions of electricalcomponents:

1. Pre-wired with the Checker board on theunit (see Figure 16 Pre-Wired with CheckerBoard on Unit)

2. Unwired with the Checker board on theunit (see Figure 17 Unwired with CheckerBoard on Unit)

3. Pre-wired with the Checker board in aremote enclosure (see Figure 18 Pre-Wiredwith Checker Board in Remote Enclosure)

4. Unwired with the Checker board in aremote enclosure (see Figure 19 Unwiredwith Checker Board in Remote Enclosure).

The pre-wired version with the Checker boardon the unit has been completely wired at thefactory. Before it is ready for operation, a plugmust be attached to the power cord and the unitmust be connected to a duct.

The unwired version with the Checker board onthe unit has only the solenoid valves and thetemperature sensor wired at the factory.A proper-sized motor starter needs to bemounted externally or in the electricalcompartment. A proper-sized power cord andplug also needs to be installed. Using the wiringdiagrams (Figures 20 through 27) make theproper connections to the blower motor, blowermotor starter, and the Checker board.All electrical apparatus should be properly sizedfor the required voltage and motor full loadamperage.

NOTE• All electrical work must be done by a

qualified electrician according to localcodes.

• The plug attached to the power cordmust be for the correct voltage asdesignated.

CAUTION• Explosion relief vents are required on

some applications.

• Consult with an insurance underwriteror a NFPA Manual to determine propervent sizing requirements.

• Vents installed on dust collectionequipment within a building must relieveto the outside of the building tominimize chances of a secondaryexplosion.

• Consult the proper authority todetermine proper method of venting thedust collection equipment.

• Torit equipment does NOT containexplosion relief vents, except on specialorder.

CAUTION

Remote controls are required for unitshandling combustible or explosive dusts.


Figure 16Prewired with Checker Board on Unit

Power Cord

To Low Pressure

To High PressureVinyl Tubing

Vinyl TubingSafety Filters

Checkerboard

Door Shown inOpen Position

Figure 17Unwired with Checker Board on Unit

Safety FiltersVinyl Tubing Access for Wiring

to MotorMounting Panel for

Motor Starter

Access forPower Cord

To Low Pressure

To High Pressure

Wiring toSolenoid Valves

Wiring toTemperature Sensors


Checker board


Figure 18Prewired with Checker Board in Remote Enclosure

Power Cord

Terminal Strip MountingPanel

Ground Lug

Factory WiredMotor Starter


High PressureFitting

Low Pressure FittingFuse Kits andTransformer

The pre-wired version with the Checker boardin the remote enclosure should be installedaccording to the following steps.

1. Mount the Checker board enclosure in alocation convenient for the machineoperator (see Figure 28 Remote CheckerBoard Assembly).

2. Install conduit between the electricalcompartment and the remote enclosure. Usesealed fittings, making all connections leaktight.

3. Wire from the terminal strip in the electricalcompartment to the terminal strip in theremote enclosure (see Wiring DiagramsFigures 20 through 27).

4. Drill mounting holes in the electricalcompartment to accept the bulkheadpneumatic fittings shipped with thecollector. Install them on the mostconvenient side of the collector, typicallyadjacent to the conduit. Connect the 1/8"ID vinyl tubing from the pressure taps insidethe electrical compartment to the bulkheadfittings, and then from the bulkhead fittingsto the mating fittings on the Checker boardenclosure. Loosely fasten the vinyl tubing tothe conduit for support, being careful not toflatten the tubing.

5. The pneumatic fitting located on the verticalsurface of the electrical compartment is thelow pressure fitting, and the fitting on thehorizontal surface is the high pressurefitting. The Checker board enclosure has thelow pressure fitting closest to the front coverand the high pressure fitting located closestto the back of the enclosure.


The unwired version with the Checker board inthe remote enclosure should be installedaccording to the following additionalinstructions.

1. Remove the back panel to access the blowermotor (see Figure 1 SDF-4 Phantom View).

2. Install and wire the motor starter, controlcircuit transformer, and other motor controlcomponents as required (see Figure 19Unwired with Checker Board in RemoteEnclosure).

3. Wire the motor to the motor starter usingthe factory installed conduit between themotor connection box and the electricalcompartment.

NOTE• Explosion vent SDF collectors do not

contain an electrical compartment orinternal conduit for wiring.

• Two 3/4" couplings are provided onthe outside of the collector forelectrical wiring access (see Figure 15SDF-4 with Explosion Vents PhantomView).

• All wiring on these units must be doneby a qualified electrician according tolocal codes.

Figure 19Unwired with Checker Board in Remote Enclosure

Access for Wiringto Motor

Wiring toTemperature Sensor

Terminal Strip

MountingPanel forMotor Starter(By others)

High PressureFitting


Low Pressure Fitting

Wiring to SolenoidValves


Figure 21Wiring Diagram 380 Volt - 50 Hz, 3PH – 3, 5 hp

From 575VAC 60Hz, 3 PhaseDisconnect means and circuit protection by others

MOTOR STARTER

NOTE: From CUR 3 wrap wire lead 1 turn (2 turns for 3,5 hp) through sensor

core CUR 1 before returning to CUR 3.

NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.

Figure 20Wiring Diagram 575 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp


L1 L2 L3

BLOWER3,5,7-1/2,10 hp

CONTROL BOARD

IN OU

T

IN OU

T

N1 2

HO

T

NE

UT

G

FU11A H3

H4

H2

H1 X3

X1

X2

FU33-2/10A

115VAC

NT1

250VA1AFU2

L1 L2 L3

M1

OL1

T1 T2 T3

IT3 N1 4 5

CL

EA

N A

IR T

EM

PER

A-

TU

RE

ON

/OFF

TE

MP

1

TE1

T3 IT3

CU

R 1

2

INT

ER

FAC

EB

OA

RD

RELAY1

M1 OL176A1 A2 95 96

RELAY2

RELAY 3

RELAY 4

RELAY5

RELAY 6

9

8

10

11

12

13

SV1

SV2

SV3

SV4

SV5

SV6

CLEANINGVALVE NO. 1

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 6

RELAY 7

TB7

TB8

TB9

TB6

TB10

TB11

TB12

TB

1

TB

1A

TB

4

TB

2

CU

R 3

G L2 L3L1

FU11.5A

L1 L2 L3

M1

IT3

T1 T3T2

OL1

BLOWER3,5 hp

(V1) (W1)(U1)

FU2

N

PSI

+24VDCLINE-24VDC

3A

NEUTRAL

GND

+DC-DC

HO

T

IN OU

T

OU

TIN

TB

1

TB

1A

TB

2

ON

/OFF

TB

4

4

CONTROL BOARD

NE

UT

TE1

T3C

UR

1

5N1 23.75KW

IT3

TE

MP

1

CU

R 3

TB6

RELAY1

2

RELAY2

6 OL1

A1 A29695

8

MOTOR STARTER

7 M1

RELAY 3

RELAY 4

RELAY5

RELAY 6

RELAY 7

TB9

TB8

TB12

TB11

TB10

TB7

13

12

11

10

9

SV1

SV2

SV3

SV4

SV5

SV6CLEANINGVALVE NO. 6

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 1

L1N1

24VDC PowerSupply

N1 CL

EA

N A

IR T

EM

PER

A-

TU

RE

INT

ERFA

CE

BOA

RD



From 380VAC 50Hz, 3 PhaseDisconnect means and circuitprotection by others


Figure 23Wiring Diagram 230 Volt - 60 Hz, 3PH – 3, 5, 7-1/2 , 10 hp

Figure 22Wiring Diagram 380 Volt - 50 Hz, 3PH – 7-1/2 hp


MOTOR STARTER

L2 L3L1 NGFU11.5A

M1

5.5KW

BLOWER7-1/2 hp

OL1

(V1) (W1)(U1)T1 T3T2

L1 L2 L3

M3T3 L3

T2

T1

L2

L1

T5

T4

T6

(V2)

(W2)

(U2)

19

INT

B1

IL1

HO

TO

UT

TB

1A

INN

EU

TO

UT

N

TB

2

ON

/OFF

TB

4T

EM

P 1

4

TE1

2

CU

R 3

5

CU

R 1

INT

ERFA

CE

BOA

RD

L3 IL3

CONTROLBOARD

RELAY1

TB6PSI

L1N1

24VDC PowerSupply

+DCLINE -24VDC

FU2

NEUTRAL

GND

-DC

CLEANINGVALVE NO.6

CLEANINGVALVE NO.4

CLEANINGVALVE NO.3

CLEANINGVALVE NO.5

SV6TB1213

12

11

10

9

RELAY 7

SV5

SV4

SV3

SV2

SV1

CLEANINGVALVE NO.2

CLEANINGVALVENO. 1

TB8

TB9

TB11

TB10

TB7

RELAY5

RELAY 4

RELAY 3

RELAY 6

RELAY2

N1

N1

M5

M3

M1

TR1

695 96

OL1

M1

M3 A1

A1

A1

8 A1 A2

A2TR1

A2

A2

7 8 915

15 21

13 14

5453

18 21 22

16 22

CL

EA

N A

IRT

EM

PE

RA

TU

RE

DELTACONTACTOR

MAINCONTACTOR

WYECONTACTOR

TIME DELAYONENERGIZE

3A+24VDC

L3 L2 L1

T3T1 T2M5

T1 T3T2

Y- STARTER

IT3

T1 T2

OL1

T3

L3L2

BLOWER3,5,7-1/2,10 hp

L1 G

L1 L2

M1

L3

H3

H4 X1

X2

3AFU1

250VAT1

H1

H2 115VAC

X3 N

CONTROL BOARD

TB

1

HO

T

IN OU

T

1

TB

1A

IN

2 N N1

OU

TN

EU

T

TB

2

ON

/OFF

CL

EA

N A

IR T

EM

PER

A-

TU

RE

TB

4

TE

MP

1

5

TE1

4

CU

R 1

CU

R 3

T3

IT3

INT

ER

FAC

EB

OA

RD

2

13

TB1212

11

RELAY 3TB9

TB10

TB8

10

9

8

TB7

TB11

RELAY1

TB6

CLEANINGVALVE NO. 6

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 1

OL1M1 79695A2A1

RELAY5

RELAY 6

RELAY 7

6

SV6

SV5

SV4

SV3

SV2

SV1RELAY2

RELAY 4

3AFU2

3-2/10AFU3



From 200VAC 50/ 60Hz, 3 PhaseDisconnect means and circuit protection by others

Figure 24Wiring Diagram 200 Volt - 50/60 Hz, 3PH – 3, 5 hp


Figure 25Wiring Diagram 200 Volt - 50/60 Hz, 3PH – 7-1/2, 10 hp

From 200VAC 50/60Hz, 3 PhaseDisconnect means and circuit protection by others

L2L1 L3GFU13A

FU23A

L2

M1

L3L1

OL1

T2T1 T3(U1) (V1) (W1)

3.75KW

IT3T

B1

HO

T

IN OU

T

CL

EA

N A

IR T

EM

PER

A-

TU

RE

TB

1A

OU

TN

EU

T

IN

ON

/OFF

TB

2

TE

MP

1

TB

4

4

TE1

51 2 N N1

CONTROL BOARD T3 IT3

CU

R 3

CU

R 1

INT

ER

FAC

EB

OA

RD

RELAY1

TB7

TB8

RELAY2

TB6

RELAY 3TB9

RELAY 4TB10

RELAY5

TB11

RELAY 6TB12

RELAY 7 13

2

12

11

10

9

8

6A1

M1

A27

OL1

95 96

SV6

SV5

SV4

SV3

SV2

SV1

CLEANINGVALVE NO. 6

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 1

MOTOR STARTER

BLOWER3,5 hp

L3L2L1GFU1

FU23A

3A

L2L1

T1 T2

L3

T3M1

OL1T1 T2

(V1)(U1)T3

(W1)

5.5KWBLOWER

7-1/2, 10 hp

M5T1L1

L3

L2 T2

T3

(V2)T5

(U2)T4

T6 (W2)

L1 21T1M3

T2 L2

L3T3

Y– STARTER

9815

15

18

16M1

43 44

M3

M3

21 22

21

13

10

TR1 M5

14

A2A1M3M5 11

12

722 A1 A2

TR1

A1 A2M1

A1 A2

CLEANINGVALVE NO. 6

RELAY1

TB12

TB8

TB9

TB10

RELAY2

RELAY 3

RELAY 4

6

TB7

TB6

13

14

15

16

18

17TB11

RELAY5

RELAY 6

RELAY 7

SV1

SV5

SV6

SV4

SV3

SV2

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 1

INTE

RFAC

EBO

ARD

CONTROLBOARD

IN

HO

TO

UT

INN

EU

TO

UT

ON

/OFF

2

MAINCONTACTOR

TIME DELAYON ENERGIZE

96

WYECONTACTOR

DELTACONTACTOR

CL

EA

N A

IR T

EM

PER

AT

UR

E

IL1

IL2 22

TB

2

TB

1A

TB

1

TB

4

TE

MP

1

TE1

4 5

CU

R 1

CU

R 3

19

20

2




Figure 27Wiring Diagram 208 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp

FFFFFigure 26Wiring Diagram 460 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp

MOTOR STARTER



L2 L3

T1

115VAC

250VA

GL1

FU1

FU21-1/2A

1-1/2A

H4

H3

H2

H1

X1

X3

X2FU3

3-2/10A

N

L2L1 L3M1

OL1T1 T2 T3

IT3

BLOWER3,5,7-1/2,10 hp

IN

1

TB

1

OL176 MOTOR STARTER

8 CLEANINGVALVE NO. 1

TB9

TB6

OU

T

TB

1A

IN

HO

T

2 N1N CL

EA

N A

IR T

EM

PER

A-

TU

RE

OU

TN

EU

T

TB

2

ON

/OFF

TE1

4 5C

UR

1

INT

ER

FAC

EB

OA

RD

TB

4T

EM

P 1

CONTROL BOARD T3 IT3

CU

R 3

2RELAY1

RELAY2

RELAY 3

RELAY 4

RELAY5

RELAY 6TB12

RELAY 7

A1

M1

A2 95 96

SV1

SV2

SV3

SV4

SV5

SV6

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 6

9

10

11

12

13

TB10

TB11

TB8

TB7

IT3

T1 T2

OL1

T3

L3L2

BLOWER3,5,7-1/2,10 hp

L1 G

L1 L2

M1

L3

H3

H4 X1

X2

3AFU1

250VAT1

H1

H2 115VAC

X3 N

CONTROL BOARD

TB

1

HO

T

IN OU

T

1

TB

1A

IN

2 N N1

OU

TN

EU

T

TB

2

ON

/OFF

CL

EA

N A

IR T

EM

PER

A-

TU

RE

TB

4

TE

MP

1

5

TE1

4

CU

R 1

CU

R 3

T3

IT3

INT

ER

FAC

EB

OA

RD

2

13

TB1212

11

RELAY 3TB9

TB10

TB8

10

9

8

TB7

TB11

RELAY1

TB6

CLEANINGVALVE NO. 6

CLEANINGVALVE NO. 5

CLEANINGVALVE NO. 4

CLEANINGVALVE NO. 3

CLEANINGVALVE NO. 2

CLEANINGVALVE NO. 1

OL1M1 79695A2A1

RELAY5

RELAY 6

RELAY 7

6

SV6

SV5

SV4

SV3

SV2

SV1RELAY2

RELAY 4

3AFU2

3-2/10AFU3


Figure 28Remote Checker Board Assembly

Control Panel Label

Remote Checker boardAssembly Kit Low Pressure (Clean Air)

Control Box

Terminal Strip

Flat CableHigh Pressure (Dirty Air)

High and Low Pressure Fittings

Control Box

Cover of Control Box


With the blower motor starter turned on, checkoperation of the solenoid valves. When theChecker board is used, press and hold theCONSTANT CLEAN push button and pulsingwill begin. The valves should open and closecontinuously with a factory set interval time of10 seconds between each cleaning pulse.

Figure 29SDF Solid-State Timer Wiring Diagram

POWERSUPPLY

TIMINGLOGIC

CONTROLLOGIC

CONTROL BOX

ON TIMEOFF TIME

PRESSURESWITCH

PROGRAM PINS PROGRAM LUG

SOLENOID VALVES

4FU 3AMPL1 L2

SOLCOM 1

3 42 5 6

X1 115V X2

H2

460V

ITGS

H3H1

IM

IM

STOP START

X1 115V X2

H3 H2H1

H4

H4

230V

FANI MTR

IOL

IT3

IT2

IT1IM

IL3

IL2

IL1

3FU

2FU

1FUL1

L2

L3

230V 3060N

If the model SDF is purchased with a solid statetimer in the unit instead of the Checker board,the timer will be wired to the solenoid valves.If the timer is to be remote mounted, it will befurnished unwired. A properly sized motorstarter needs to be mounted in addition to thetimer. Using the wiring diagram in Figure 29SDF Solid-State Timer Wiring Diagram, makethe proper connections to the blower motor,blower motor starter, and solid state timer.

After attaching the plug and starting the blowermotor, check for proper rotation. It should beclockwise when looking down at the top of theblower motor. Also, reference the rotationsticker on the blower housing (see Figure 1SDF-4 Phantom View). Proper blower rotation isextremely important. If the blower is running inthe wrong direction, it will only deliverapproximately 40% of its rated air volume.Interchange any two power wire leads (3 phaseonly) on the plug to reverse rotation.

CAUTION

Do not interchange a power lead andthe ground wire.

Disconnect electrical power beforeservicing any electrical component.

CAUTION


2.6.2 Checker Board Diagnostics and ControlPanel Specifications

See the Installation and Operation Manual forthe Checker Board diagnostic and control panelfor complete information (IOM-72202-00)

2.6.3 Solid-State Timer Specifications(See Figure 29 SDF Solid-State TimerWiring Diagram)

COMPONENTS: Standard Downflo modelSDF dust collectors are equipped with 115volt AC solenoid valves rated at 19.7 wattseach and a solid-state 115 volt AC/50-60Hz/1timer when ordered.

The timer is factory-adjusted at 100 milliseconds(1/10 second) pulse time and a 10 secondduration (elapsed time) between pulses.

Input power to the solid-state timer is applied toL1 and L2 terminals on the timer control circuitboard, which is in parallel with the low voltage(115/60/1) coil of the blower fan magneticstarter (see Figure 29 SDF Solid-State TimerWiring Diagram). Upon fan start-up, power issupplied to the control board and the preset OFFtime is initiated. At the end of the OFF time, thecontrol board timer will energize acorresponding solenoid valve to provide the ONtime cleaning pulse for one filter element andthen step to the next filter element.

This cycle is continuous unless an auxiliarycontrol such as a Photohelic pressure switch or a1TGS toggle switch is used to control the timer(see Figure 29 SDF Solid-State Timer WiringDiagram).

When the ® is used on the Checker boarddiagnostic and control panel, or when thePhotohelic gage is used as an internal control ofthe solid-state timer, the valves will pulse onlywhen the differential pressure reaches the highset point and will continue the pulse sequenceuntil the lowest pressure setting is reached (seeFigure 1 SDF-4 Phantom View and Figure 29SDF Solid-State Timer Wiring Diagram).

2.6.1 Electrical Operation

All functions on the Downflo model SDF arecontrolled from the Checker board diagnosticand control panel (see Figure 1 SDF-4 PhantomView).

For starting and operation, refer to theInstallation and Operations Manual for theChecker board diagnostic and control panel. Forwiring diagrams, see Figures 20, 21, 22, 23, 24,25, 26, and 27 in this manual.

Each dust collector comes equipped withsolenoid valves that control the pulse cleaningvalves which clean the filter elements. Thesolenoids are connected electrically to theChecker board diagnostic and control panel (seeFigure 1 SDF-4 Phantom View). A wiringdiagram for each size of model SDF is suppliedwith the unit.

On versions of the Downsized Downflo withoutthe Checker board diagnostic and control panel,the solenoid valves are connected electrically tothe solid-state control timer. A wiring diagramfor each model is supplied with this version.

NOTEThe end user assumes responsibility forproviding all necessary disconnectingmeans and overload protection inaccordance with all local codes andregulations governing this installation.

NOTEThe SDF model solid-state timer requiresa low voltage (105 to 135 volt AC)control circuit in the fan starter. This isnot supplied by Torit.


When all of the available outputs are notrequired, programming the control board forfewer outputs is accomplished by resetting theprogram pin selection wire on the solid-statecontrol board to the correct number of solenoidvalves being used (see Figure 29 SDF Solid-StateTimer Wiring Diagram).

The 1TGS is an optional switch (not supplied byTorit) and provides a means of control when thepulse sequence is activated. Consult your localTorit representative before using this method.

In grounded systems, neutral to control boxmust be connected to L2.

Input: 105-135 VAC/50-60 Hz/1

Output Solenoids: Type—solid-state switch(Triac). The load is carried by and turned onand off by the Triac. Rating–200 wattsmaximum load per output.

Pulse Width (ON Time): Factory set at 100milliseconds (1/10 second).

OFF Time: Adjustable–1 to 1.5 secondsminimum, 30 seconds maximum, factory setat 10 seconds.

Operating Temperature Range:-20°F to 130°F.

Transient Protection: 50kW transient of20ms duration once every 2 seconds.

Solenoid Valves: 115 volts AC at 19.7 wattseach.

2.6.4 Magnehelic Gage (See Figure 30Magnehelic Gage & Figure 31 Remote-Mounted Magnehelic Gage)

Some units are supplied with an optionalMagnehelic gage where the gage, pressure taps,and tubing have been preinstalled in our factory.Zero and maintain the Magnehelic gage per theoperating and maintenance instructions providedby the manufacturer of the Magnehelic gage.

For remote-mounted gages, the plastic tubingwill determine the distance away from the unitthat the gage can be located. If more tubing isrequired, please contact your local Toritrepresentative.

Mount the remote gages as shown in Figure 31Remote-Mounted Magnehelic Gage. Make theconnections as shown in Figure 30 MagnehelicGage. The high pressure port is connected to thedirty air plenum. The low pressure port isconnected to the clean air plenum. The high andlow pressure connections are located in theelectrical compartment of the collector. Usebulkhead fittings and mount them through thecabinet to the electrical compartment. Zero andmaintain the gage per operating instructions.

NOTEDo not adjust ON time unless theproper test equipment is used.Too much or too little ON time cancause shortened filter element life.Consult with your local Toritrepresentative.


Figure 31Remote-Mounted Magnehelic Gage

MagnehelicGage

Screw Self-Drilling

Mounting Panel

Figure 30Magnehelic Gage

Plastic Tubing

Tubing Male Adapters1/8" NPT

Low Pressure Port (Ref)

High Pressure Port (Ref)

Dirty Air Plenum

Clean Air Plenum

MagnehelicGage


2.6.5 Torit ∆∆∆∆∆P Control (See Figure 32Torit ∆∆∆∆∆P Control Wiring Diagram &Figure 33 Printed Circuit Board )

CAUTION

• All electrical work is to be done by aqualified electrician according to thenational and local electrical codes thatapply.

• All electrical power must be shut offduring installation.

• Do not apply in hazardous (classified)atmospheres.

NOTE• Do not mount controls in a high

vibration area without shock mounts.

• Do not mount controls in corrosiveatmospheres without an appropriateenclosure.

• Do not operate with the enclosure open.

Figure 32∆P Control Display


Some units are supplied with an optional Torit∆P Control, with the control, pressure taps, andtubing preinstalled in our factory.

1. Using the wiring diagram (Figure 33 PrintedCircuit Board), wire all connections for themotor, ∆P Control (TB1), the solenoid timercontrol, and solenoid valves.

2. Wire the alarm circuit labeled AUXILIARY,if desired. When the pressure drop reachesthe preset ALARM value, the relay willactuate and the LED light labeled ALARMon the user interface will illuminate. TheAUXILIARY relay can be used to actuatevisual and/or audible alarms (by others).

CAUTION

STATIC-SENSITIVE ELECTRONIC ASSEMBLY

• Use proper grounding and handlingprocedures to prevent permanentdamage to this device.

• If it is necessary to remove the printedcircuit board, handle only by the edges.

• Avoid touching the socketed E2PROMpins.

NOTEThis control has a factory defaultvoltage selection of 115 VAC. If you planto operate at 230 VAC, change thejumper settings as shown on the printedcircuit board and as described inOPTIONAL SETTINGS in Section 2.6.5Torit ∆∆∆∆∆P Control.

3. Apply power to the ∆P Control, adjust thesetpoints for the High and Low setpoints—the pressure drops that start and stop thecleaning process—and the Alarm setpoint.

4. Press and hold one of the setpoint pushbuttons. While holding down the pushbutton, use the up and down arrow keys toadjust that setting. The setpoints will alwaysbe in the same units as chosen for thepressure display. Adjust the remainingvalues in the same manner.

Optional Settings

230 Volt Power Supply

To operate at 230 VAC remove the two jumperslabeled W1 and W3, reinsert one of the jumpersin position W2.

Change Units from Inches of Water toMillimeters of Water

To have all units displayed as mm wg, locate thejumper block labeled J1, located just above thePROG DISABLE terminals at the bottom edge ofthe printed circuit board. Remove the jumperfrom the center and left pins (numbered 2 & 3),and reinstall on the center and right pins(numbered 1 & 2).

Disabling the Setpoint Adjustments

To restrict the ability to change the setpoints,install a jumper wire across the PROGRAMDISABLE terminals on Terminal Block 2 (TB2).This will allow the operator to press theappropriate set keys to determine the currentsettings, but will not allow any changes until thejumper wire is removed.

Installing a key-operated, normally closedswitch through the door of the enclosure thatinterrupts the jumper wire will providetemporary access to the setting function withoutopening the control enclosure.


External Alarm Reset

Locate the terminal block in the lower rightquadrant of the printed circuit board labeledARM. RESET (TB2). Wire this terminal block toa normally open key-operated switch. Closingthe switch will turn off the alarm and disable ituntil the switch is reopened. Momentarilyclosing the switch will turn off the alarm, but ifthe alarm conditions still exist, the alarm relaywill latch on again in 10 seconds (see Figure 33Printed Circuit Board).

Disable the Alarm

Locate the jumper block in the lower rightquadrant of the printed circuit board labeledMODE (J5). Remove the jumper from theALARM position. Disabling the Alarm Relayreduces the alarm function to lighting the LEDon the user interface.

Reinstalling the jumper in the SLAVE position(upper and middle pins) causes the AUXILIARYrelay to operate in parallel with the HI/LOCONTROL relay.

If the jumper is not installed in either position,the AUXILIARY relay does not function.

Analog Output

Locate the terminal block in the upper leftquadrant labeled SENSOR OUT (TB4). Thisconnector provides a 1-5 VDC outputproportional to the 0 to maximum span of thepressure sensor, 10K ohm load minimum (seeFigure 33 Printed Circuit Board).

Figure 33Printed Circuit Board

Alarm Disable

Alarm orAuxiliary Relay

Hi/Lo TimerControl Relay

{ {

{ {

Remote Alarm Reset

Disable ProgrammingUnits ("wg or mm wg)

Power ConnectionsVoltage Choice Jumpers


Figure 35Remote-Mounted Photohelic Gage

Screw Self-Drilling

Photohelic Gage

Mounting Bracket

Figure 34Photohelic Gage

Tubing MaleAdapters 1/8" NPT

Low Pressure Port (Ref)

High Pressure Port (Ref)

Plastic TubingPhotohelic

Gage

Dirty Air Plenum

Clean Air Plenum


2.6.6 Photohelic Gage (See Figure 34Photohelic Gage & Figure 35 Remote-Mounted Photohelic Gage)

Some units are supplied with an optionalPhotohelic gage where the gage, pressure taps,and tubing have been preinstalled in our factory.Proper wiring of the gage is necessary.

1. Remove the four (4)#6-32 x 5/16 longscrews and plastic enclosure on the back ofthe Photohelic gage and set aside.

2. Add the two jumper wires (not supplied byTorit) and wire the gage using 3/4" conduitopening, as shown in Figure 36 PhotohelicGage Wiring Diagram.

3. Reassemble the plastic enclosure and fastensecurely, using the #6-32 x 5/16" longscrews previously removed.

4. Zero and maintain the Photohelic gage perthe operating and maintenance instructionsprovided by the manufacturer of thePhotohelic gage.

For remote-mounted gages, the plastic tubingwill determine the distance away from the unitthat the gage can be located. If more tubing isrequired, please contact your local Toritrepresentative.

Mount the remote gages as shown in Figure 35Remote-Mounted Photohelic Gage. Make theconnections as shown in Figure 32 PhotohelicGage. The high pressure port is connected to thedirty air plenum. The low pressure port isconnected to the clean air plenum. The high andlow pressure connections are located in theelectrical compartment. Use bulkhead fittingsand mount them through the cabinet to theelectrical compartment. Wire the Photohelicgage per the instructions previously stated in thissection.

Figure 36Photohelic Gage Wiring Diagram

Wiring by others*For use with Solid State Timer only

Timer Board

Solenoid Valves

∆P Control

PRESSURESWITCH

110VACNEUT

From maincontrol panel

Remove factory installedjumper on timer labeled

(Pressure Switch)


Figure 37Air Manifold Assembly

Solenoid Coil

Solenoid Valve

DiaphragmAir Valve

Manifold Weldment

Manifold Mounting Bracket

2.7 Compressed Air Supply Installation(See Figure 1 SDF-4 Phantom View)

Remove the plastic pipe plug from thecompressed air connection at the bottom of thecollector (see Figure 1 SDF-4 Phantom View)and connect the compressed air supply line. Usethread-sealing tape or pipe sealant on allcompressed air connections. Use quick-disconnect fittings if possible. Be sure that allcompressed air components are adequately sizedto meet the maximum system requirements of1.1 scf per pulse at 90-100 psig supply pressure.

If the compressed air inlet adapter is used toconvert the NPT threads to British pipe threads,see Figure 3 Compressed Air Inlet Adapters forassembly.

NOTEIt is important that the compressed airsupply be both oil and moisture free.Contamination in the compressed airline that is used to clean filter elementswill result in poor cleaning or cleaningvalve failure and a reduction in dustcollector performance.


2.7.1 Air Manifold Assembly(See Figure 37 Air Manifold Assembly)

To access the air manifold assembly, remove thescrews on the back (see Figure 1 SDF-4 PhantomView) and lift the rear access panel off. Themanifold assembly contains diaphragm airvalves, solenoid valves, the manifold weldment,and the manifold brackets. See the ReplacementParts List for authorized Torit replacementparts.

When replacing the rear access panel, be surethe gasket is not damaged and the screws aretight, or leakage may occur.

2.7.2 Blower Compartment (See Figure 1SDF-4 Phantom View)

Remove the rear access panel as described inSection 2.8.1 Air Manifold Assembly in order toaccess the blower compartment.

2.7.3 Dust Storage Compartment

Access to the dust storage compartment isthrough the hinged door on the front of the unit(see Figure 1 SDF-4 Phantom View). The dustcontainer and cover are in the dust storagecompartment. The dust container support systemis located at the base of the dust storagecompartment and is removable. The dustcontainer support system may be lifted from itstwo mounting pins and removed through thedust compartment door.

4.0 START–UP

1. Turn on the compressed air supply to theDownflo model SDF dust collectorcompressed air manifold. Adjust to 90 psigof pressure, minimum. Pressure of90-100 psig is the most typical setting forsatisfactory cleaning performance (seeSection 5.0 Operating Adjustments).The lower the compressed air setting, thelower the pulse valve air consumption.

2. Turn on the blower motor by pressing thegreen BLOWER ON button on the Checkerboard diagnostic and control panel.

3. Adjust the blower for the proper systemairflow that is desired by adjusting thevolume control damper on the blower fanexhaust discharge if applicable (see Figure 1SDF-4 Phantom View). The outlet damper isnot designed to be used when either theoutlet adapter for ducting or after filtering,or the weather hood are attached to thecabinet.

Disconnect the SDF from all electricalpower sources and compressed air supplyand bleed off any residual pressure beforeperforming any service work.

CAUTION

NOTEMake sure the dust storage compartmentdoor is closed tightly. Handles should beturned clockwise to seal the door properly.

Stand clear of blower fan exhaust area asdebris can be exhausted and cause injury.

CAUTION


* ∆P = Pressure Drop across filter elementsin inches water gage.

NOTE• Do not increase compressed air

pressure beyond 100 psig ascomponent damage may result.

• Do not increase or decrease the pulseON TIME on the solid state timer.Longer or shorter pulse ON times donot aid in cleaning of filter elements,they just waste compressed air andcause shortened filter element life.

5.0 OPERATING ADJUSTMENTS

Compressed air is recommended to be set at90 psig. The control is factory set to clean onefilter element every ten seconds.

5.1 Checker Board

Refer to the Start-up Procedure in theInstallation and Operations Manual for theChecker board diagnostic and control panel(IOM-72202-00) and follow this procedure forany operating adjustments that may benecessary.

5.2 Solid-State Control Timer

The optional solid-state control timer is also setto clean one filter element every ten seconds.Either the Magnehelic or Photohelic gage can beused with the solid-state timer.

If the filter elements are operating at a higherthan design ∆P*, it may be lowered byincreasing the frequency of cleaning. Theminimum off time (elapsed time), between pulsesis 1-1.5 seconds. Additional cleaning energy maybe obtained by adjusting the pressure upward toa maximum of 100 psig.

Pulse ON TIME can be checked or adjusted byconsulting your local Torit representative.

If operating at a low ∆P, you may want to raiseto a higher pressure drop by increasing the OFFTIME between pulses on the solid state timerboard. This will greatly reduce your compressedair consumption. Use of the optional pressureswitch control (Photohelic gage) is an alternativeto provide compressed air savings. This controlsthe solid-state timer board to only pulse at thedesired high and low ∆P* set needle. The pulsecycle starts when the filter elements obtain thatset point and continues the pulse cycle until thelow ∆P set point is reached, at which time thepulse cycle stops. This method of using thePhotohelic gage can save additional compressedair, especially when collecting low levels ofcontaminants (low loading).


5.3 ∆∆∆∆∆P Control Calibration

The only user calibration is the zero adjustmentof the display. Due to either slight changes inelectronic components over time or pressuredifferentials within the plant environment,occasionally the display may show somethingother than 0.0 while at rest. Use the followingprocedure to recalibrate the zero point.

1. Power the ∆P Control for a minimum of30 minutes to stabilize the operatingtemperature.

2. Remove power from the ∆P Control so thatthe display shuts down.

3. Press and hold the LOW SET, HIGH SET,and ALARM SET keys while reapplyingpower to the ∆P Control. Continue to holdthese keys while the ∆P Control goesthrough a power-up routine. This isindicated by sequentially displaying "8" ineach digit, and then displaying "0.0" (seeFigure 32 ∆P Control Display).

4. Release all three keys. The new calibrationautomatically stores in memory.

5.4 Outlet Damper Adjustment

Blower adjustments can be made by testing theduct system flow rate and adjusting the volumecontrol damper to the desired system flow rate.

The airflow through the Downsized Downflocollector may be adjusted by using the outletdamper located on the top of the unit (seeFigure 1 SDF-4 Phantom View). Turn the twoknobs to loosen them. While still grasping theknobs, slide the damper plate. The more thedamper is closed, the more the airflow will berestricted. The damper will give the maximumairflow through the collector when fully open.

5.5 Operating Checks

Monitor the exhaust visually. Exhaust shouldremain visually clean. If a leak develops, it willbe first noticed as a visual puff of dustimmediately after a cleaning pulse. A red lighton the Checker board will also indicate thatthere may be a problem.

Monitor filter element pressure drop by meansof the visual display on the Checker board. Seethe Installation and Operations Manual for theChecker board diagnostic and control panel.Equilibrium pressure drop (stabilized ∆P) isgenerally 3-4 inches water gage for seasonedfilters, but 1-6 inches water gage is considerednormal.

NOTECompare the blower motor amperagedraw to the motor manufacturer'snameplate amperage rating. Operatingamperage greater than the manufacturer'srecommendation will cause damage.

NOTEAt initial start-up or with any new filterelements, the blower may overloadbecause of airflow higher than designlevel. If this happens, partially close thevolume control damper and check blowermotor amperage draw.


This procedure must be followed in orderto ensure safe changeover of filters.

CAUTION

NOTECheck to make sure that the wing nutsare securely tightened. Excessivecompression of the filter gaskets cancause leakage. Hand tighten only.

6.2 Filter Element Installation(See Figure 1 SDF-4 Phantom View)

1. Slide new Torit-Built filter elements ontoeach suspension yoke.

2. Hand tighten filters by turning wing nutclockwise onto suspension yoke threads untiltightened securely.

6.3 Bag-Out Filter Element Removal(See Figure 38 Bag-Out Assembly &Figure 39 Bag-Out Filter Removal)

The bag-out option allows removal of filterswithout exposure to atmosphere. Each filter isremoved in its own bag according to thefollowing procedure.

1. Attach the polyethylene bag to the bag-outcollar using the strap as shown in Figure 38Bag-Out Assembly.

2. Reaching into the bag collar, using the bagas a rubber glove, loosen the filter byunscrewing the wing nut counterclockwiseby hand.

6.0 SERVICE

6.1 Filter Element Removal

1. Loosen filters, beginning with the top row,by unscrewing the wing nutscounterclockwise by hand (see Figure 1SDF-4 Phantom View).

2. Move the filters to break the gasket sealsbetween the filter and the sealing surface.Rotate the filter slowly 1/2 turn to dump anyloose dust off the top of the filter. Slide thefilter along the suspension yoke and out thefront of the access port.

3. Inspect the sealing surface to make sure thatthe gasket sealing area is free of dust.

4. Check for an accumulation of dust in thestorage area. If cleaning is required, seeSection 6.4 Dust Removal/Dust Container.

Disconnect the SDF from all electricalpower sources and compressed air supplyand bleed off any residual pressure beforeperforming any service work.

CAUTION

NOTE• Do not drop or rap element on the

floor or other hard surface, as damageto the filter element will occur, resultingin leakage.

• It is necessary to clean the dust off thegasket sealing area to ensure a positiveseal of the filter gasket.


Bag

Collar

Strap

Cut Ties

Cable Ties

Cut Between Cable Ties

Figure 38Bag-Out Assembly

Figure 39Bag-Out Filter Removal

3. Move the filter to break the gasket sealbetween the filter and the sealing surface.Rotate the filter 1/2 turn to dump any loosedust off the top of the filter. Slide the filteralong the suspension yoke and out theaccess port into the bag as far as possible.

4. Use cable ties or tape to close the bag nearthe filter in two places about one or twoinches apart (see Figure 39 Bag-Out FilterRemoval). Cut the bag between the cableties. Dispose of the filter properly.

5. Remove the strap and the remainder of thebag from the collar. Dispose of properly.

6.4 Dust Removal / Dust Container

Turn off the dust collector and empty as neces-sary keeping the dust in the dust container to amaximum of 2/3 full. See Service Interval settingin the Maintenance Required portion of theInstallation and Operations Manual for theChecker board diagnostic and control panel(IOM-72202-00).

NOTEDo not let the dust storage containeroverfill. It can cause poor collectorperformance and require an extensiveclean-up due to overflow of dust whenremoving the container.


*Note: The dust container and its contents maybe sealed by placing the top cover on thecontainer and then disposing of the entirecontainer completely. Another dustcontainer may then be placed in theDownsized Downflo.

Figure 40Dust Container Support System

HandleDust Container

Top cover is storedunder dust container.

Interior hopper notshown for clarity.

~

1. Open the hinged access door on the front byturning the two latches counterclockwise(see Figure 1 SDF-4 Phantom View).

2. Reach inside the model SDF and grasp thehandle on the dust container support system(see Figure 40 Dust Container SupportSystem). Pull the handle down to loosen thedust container from the gasketed flange.Remove the dust container by grasping thehand holds on the sides and pulling thecontainer forward. Lift the container anddispose of the contents into the properreceptacle.* Replace the dust container andseal it against the gasketed flange by pullingthe handle on the dust container up and in.Close the hinged access door and turn thetwo latches clockwise to seal the door.

6.4.1 Dust Removal—Hopper Model

1. The hopper, with or without gate, is not forstorage. Empty the dust containerperiodically as necessary to keep dust in thehopper at a minimum. If a drum or pail isused, empty it when 2/3 full. Shut off thecollector fan before emptying the drum orpail.

2. When using the hopper with gate, close thegate and empty the drum/pail. Reinstall thedrum/pail and open the gate. The collectorfan does not need to be shut down if thisprocedure is followed.


Figure 41Typical Electrical Component Assembly

Door shown inan open position

Checker boardPC Assembly

Checker boardInterface

Vinyl Tubing

Conductor Cable

Safety Filters Mounting Panel

GroundingLug

MotorStarter

(Contactor)

Power Cord

Overload RelayTransformer

Plastic Bushings

Primary Fuse

Connectors Secondary Fuse

Shut off and bleed off residual pressurebefore performing any service work.

CAUTION

Disconnect the Downflo model SDF fromall electrical power sources and compressedair supply and bleed off any residualpressure before performing any servicework.

CAUTION

6.5 Compressed Air Components

1. Periodically check any compressed air filter/dryer components and service them byinstalling new compressed air filters anddraining any moisture off by followingmanufacturer's instructions.

2. Check the Downsized Downflo compressedair manifold for contamination, oil and/orwater. Clean or drain if necessary.

3. With the compressed air supply turned on,check the cleaning valves, solenoid valves,and tubing for any leakage. Replace anycomponents that are leaking compressed air(reference the Replacement Parts List).

6.6 Electrical Service (See Figure 41 TypicalElectrical Component Assembly)

A model SDF dust collector prewired electricalcompartment equipped with the Checker boarddiagnostic and control panel is shown inFigure 41 Typical Electrical ComponentAssembly. For a detailed description of theseparts see the Checker Board Replacement PartsList RPL-46813-00.


A. Blower motor does notstart.

B. Blower motor starts, butdoes not keep running.

1. Wiring.

a. Proper wire size notused for motor.

b. Not wired correctly.

c. Unit not wired foravailable voltage.

d. Input circuit down.

e. Electrical supply circuitdown.

1. Starter kicks out.

a. Incorrect starteroverload relay isinstalled.

b. Collector access panelsare off or not closedtight.

c. Blower damper controlnot adjusted properly.

1a. Rewire per local andnational codes for properwire size.

1b. Check and correct internalmotor wiring for properconnections for yourvoltage (reference MotorManufacturer WiringDiagram on motor).

1c. Correct wiring for properinput voltage.

1d. Check input to motorcircuits for voltage on allleads.

1e. Check the electrical supplycircuit for proper outputvoltage or fuse, circuitbreaker fault. Replace ifnecessary.

1a. Check for proper motorstarter overload relay.Replace with proper valueoverload relay if needed.

1b. Tighten access panel(s) byhand securely (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual).

1c. Check airflow in ductingfor proper requirements.Adjust the damper controluntil the proper airflow isachieved and the blowermotor amperage draw iswithin manufacturer motorratings.

7.0 Troubleshooting GuideTROUBLE POSSIBLE CAUSE REMEDY


7.0 Troubleshooting GuideTROUBLE POSSIBLE CAUSE REMEDY

B. Blower motor starts, butdoes not keep running(cont.).

C. Dust discharge out ofclean air outlet.

D. Insufficient airflow.

1. Starter kicks out (cont.).

d. Electrical circuitoverload.

1. Filter element damage,dents in the end caps,gasket damage or holes inpleated media.

2. Filter wing nuts are loose.

1. Blower rotation backwards.

2. Collector openings not tightor closed.

1d. Check that the supplycircuit has sufficient powerto run all equipment.

1. Replace the filter elements.Use only Torit-Built filterelements (see Figure 1SDF-4 Phantom View andinstall as in Section 6.2Filter Element Installationlocated in this manual).

2. Tighten filter wing nutssecurely (see Figure 1SDF-4 Phantom ViewandSection 6.2 Filter ElementInstallation located in thismanual).

1. Check blower rotation.The rotation should beclockwise, looking down ontop of the blower motor(see Figure 1 SDF-4Phantom View and Section4.0 Start-up located in thismanual).

2. Check that access panelsare in place and tightenedsecurely (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual). Also check thataccess door to dustcontainer is securedproperly (see Figure 1SDF-4 Phantom View andSection 6.4 Dust Removal /Dust Container located inthis manual).


TROUBLE POSSIBLE CAUSE REMEDY7.0 Troubleshooting Guide

D. Insufficient airflow(cont.).

3. Blower exhaust area isrestricted.

4. Filter elements pluggedwith particulate.

a. Filter elements need tobe replaced.

b. Lack of compressed air.

c. Pulse cleaning notenergized.

3. Check exhaust area forblockage. Remove materialor debris that is blockingthe exhaust area or adjustdamper flow control onexhaust area.

4a. Remove and replace usingonly Torit-Built filterelements (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual).

4b. Check compressed airsupply for 90 psigminimum. See Figure 1SDF-4 Phantom View.Increase pressure asdescribed in Section 5.0Operating Adjustmentslocated in this manual.

4c. Check supply voltage to thetimer board with a voltohm meter. Check the fuseon the timer board. If thefuse is blown, replace itwith one of equal value. SeeWiring Diagram in Figure29 SDF Solid-State TimerWiring Diagram andSection 2.6.3 Solid-StateTimer Specifications. Alsosee the Installation andOperations Manual for theChecker board diagnosticand control panel (IOM-72202-00) Section 7.0Troubleshooting Guide.


TROUBLE POSSIBLE CAUSE REMEDY

7.0 Troubleshooting Guide

4. Filter elements pluggedwith particulate.

d. Dust storage area is toofull or plugged.

5. Pulse valves are notfunctioning.

a. Pulse valves areleaking compressed air.

b. Pulse control solid-statetimer board has failed.


4d. Clean out dust storage areaas described in the Section6.4 Dust Removal / DustContainer in this manual,reference Figure 1 SDF-4Phantom View and Section6.1 Filter Element Removaland 6.2 Filter ElementInstallation.

5a. Lock out all electricalpower to the model SDFand bleed off thecompressed air supply.Check for debris, valvewear, or diaphragm failureby removing the diaphragmcover on the pulse valves.Also check for solenoidleakage and/or damage.If pulse valves or solenoidvalves and solenoid tubingare damaged, replacepart(s).

5b. Check supply voltage to thetimer board with a voltohm meter. Check the fuseon the timer board. If thefuse is blown, replace itwith one of equal value. Ifthe fuse and input power tothe control board are okay,but there is not any outputvoltage to the solenoidpulse control valves,replace the pulse controltimer board (referenceSection 2.6.3 Solid-StateTimer Specifications andFigure 29 SDF Solid-StateTimer Wiring Diagram).




5. Pulse valves are notfunctioning.

c. Pulse control timerboard is out ofadjustment.

1. No power to the control.

2. Fuse blown.

1. Out of calibration.

2. Differential pressurepresent from indoor tooutdoor with collectordischarging outside.

1. Not properly wired to thetimer board.

2. Faulty relay.

3. Pressure tubingdisconnected, ruptured, orplugged.


E. ∆∆∆∆∆P Control shows nodisplay.

F. ∆∆∆∆∆P Control display doesnot read zero when atrest.

G. ∆∆∆∆∆P Control is on, butdoes not start thecleaning system.

5c. Refer to Section 2.6.3 Solid-State Timer Specificationslocated in this manual andto Figure 29 SDF Solid-State Timer WiringDiagram.

1. Use multimeter to check forvoltage at the terminals ofTB1.

2. Check the fuse in fusetower F1. Replace if bad.

1. Disconnect pressure tubing.Recalibrate per Section 5.3∆P Control Calibration.

2. Recalibrate with tubingattached per Section 5.3 ∆PControl Calibration. Ignoreif desired.

1. Be sure that the PressureSwitch connection on thetimer board is connected toterminals 7 & 8 on TB3.

2. Test the relay for properclosure with multimeter. Ifnonfunctional, replace the∆P Control.

3. Check the tubing for kinks,breaks, contamination, andloose connections.




1. Jumper wire across thePressure Switch terminalson the timer board.

2. Not properly wired to thetimer board.

3. HIGH SET and/orLOW SET are improperlyadjusted for systemconditions.

4. Pressure tubing isdisconnected, ruptured, orplugged.

1. Alarm setpoint too low.

2. Excessive pressure drop.

3. Pressure tubing isdisconnected ruptured, orplugged.

1. Improper operation.

2. Programming keysdisabled.

1. Remove the PressureSwitch jumper wire beforewiring to the ∆P Control.

2. Be sure that the PressureSwitch connection on thetimer board is connected toterminals 7 & 8 on TB3.

3. Adjust setpoints to usablevalues.

4. Check tubing for kinks,breaks, contamination, andloose connections.

1. Adjust alarm setpoint to ahigher value.

2. Check cleaning system andcompressed air supply;replace filter elements ifthey will not clean down.

3. Check tubing for kinks,breaks, contamination, andloose connections.

1. Press and hold one of thethree setpoint keys to usethe arrow keys.

2. Remove Program Disablejumper from terminals3 & 4, TB2.

H. Pulse cleaning neverstops.

I. Alarm light is on.

J. Arrow keys do not work.


TROUBLE POSSIBLE CAUSE REMEDY7.0 Troubleshooting Guide

1. Improper wiring.

2. Defective solenoids.

3. Timer board not powered.

4. Possible defective timerboard.

1. Check all wiring betweenthe ∆P Control and timerboard and between thetimer board and solenoidvalve coils.

2. Check all solenoid valvecoils.

3. Check the Power On LEDon the timer board. If notilluminated, check thesupply voltage to the timerboard with multimeter.Check the fuse on the timerboard. Replace with identi-cal fuse if necessary.

4. If LED is illuminated,observe the output LEDs.Install a temporary jumperacross the Pressure Switchterminals. Output LEDsshould flash in sequence.Check output using ananalog multimeter set to150 VAC range. Measurefrom SOL COM to asolenoid output. The meterneedle will deflect if voltageis present when LEDflashes for that output.Replace the board if eitherthe LEDs do not flash or novoltage is present at theoutput terminals duringflash.

K. Control CLEANINGlight on, but no pulsecleaning occurs.


NOTESNOTESNOTESNOTESNOTES


The Torit® Warranty

Donaldson warrants that it will, at its option, repair or replace the goods, or return thepurchase price thereof, which are found to be defective in material or workmanship, or notin conformity with the contract requirements provided that, within one (1) year of shipmentthereof, Purchaser gives written notice of such defect to Donaldson, the Purchaser returns thegood to a Donaldson Company designated point of manufacture, with transportationcharges prepaid by Purchaser, and an examination by Donaldson discloses to its satisfactionthe existence of such defect or nonconformity with the contract requirements. In no eventshall Donaldson be liable for any incidental, special, or consequential damages resulting fromsaid defects or nonconformity.

The foregoing does not apply to components which were not manufactured by Donaldson,and is expressly in lieu of all other warranties expressed or implied, including any warrantyof merchantability or fitness for a particular purpose or use. There are no warranties whichextend beyond the foregoing. No agent, employee or representative of Donaldson has anyauthority to bind Donaldson to any affirmation, representation, or warranty concerning thegoods sold under this sales contract and unless affirmation, representation, or warranty madeby an agent, employee, or representative is specifically included within this written agreement,it shall not be enforceable by the Purchaser.

PARTS ORDERING INFORMATION

When ordering parts, give model number andserial number of dust collector, part number,

description and quantity of parts desired.

IOM-46740-00August 1999 Revision 5© Copyright 1995 TORITPrinted in U.S.A.

Parts and Service ProgramFor genuine TORIT-BUILT® replacement filters

and parts, call the TORIT EXPRESS Line:

1-800-365-1331

Donaldson Company, Inc.Torit ProductsP.O Box 1299Minneapolis, MN55440-1299 [email protected]

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