Graco Inc 233701 Control Board, Pressure Control Transducer, Pressure Adjust Potentiometer

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Pressure Control

Pressure Control

Control Board

Removal

1.

Relieve pressure; page 5.

2.Fig. 14. Remove four screws (28) and display/cover (153). Pull display connector wings open on PC board and pull display connector out.

3.Fig. 21. Disconnect at control board (10):

DLead (D) from potentiometer.

DLead (E) from transducer.

DRemove ON/OFF switch (47) connector (A).

4.Fig. 14. Remove six screws (144) from control board (10) and green ground wire.

5.Remove connector (Y) at backside of pressure control. Remove jam nut (Z) and control board (10).

Installation

When installing replacement control board, follow instructions with control board to set model type.

1.Fig. 14. Install control board (10) and jam nut (Z). Install connector (Y) at backside of pressure control.

2.Install green ground wire and control board (10) with six screws (144).

3.Fig. 21. Connect to control board (10):

DConnect ON/OFF switch (47) connector (A).

DLead (E) to transducer.

DLead (D) to potentiometer.

4.Fig. 14. Push display connector into PC board close display connector wings on PC board. Install display/cover (153) with four screws (28).

Pressure Control Transducer

Removal

1.

Relieve pressure; page 5.

2.Fig. 14. Remove four screws (28) and display/cover (153).

3.Disconnect lead (E) from control board (10).

4.Remove two screws (133) and transducer guard (149) from control housing (55). Pull transducer connector through rubber grommet (147).

5.Remove pressure control transducer (100q) and o-ring (100p) from filter housing (100e).

Installation

1.Fig. 14. Install o-ring (100p) and pressure control transducer (100q) in filter housing (100e). Torque to 30–36 ft-lb.

2.Install transducer connector and rubber grommet

(147)in control housing (55) . Install transducer guard (149) on control housing with two screws

(133).

3.Connect lead (E) to motor control board (10).

4.Install display/cover (153) with four screws (28).

Pressure Adjust Potentiometer

Removal

1.

Relieve pressure; page 5.

2.Fig. 14. Remove four screws (28) and display/cover (153).

3.Disconnect lead (D) from control board (10).

4.Loosen set screws on potentiometer knob (45) and remove knob, shaft nut, lockwasher (85) and pressure adjust potentiometer (85).

5.Remove seal (78) from potentiometer (85).

Installation

1.Install seal (78) on potentiometer (85).

2.Fig. 14. Install pressure adjust potentiometer (85), shaft nut, lockwasher (85) and potentiometer knob (45).

a.Turn potentiometer shaft (85) clockwise to internal stop. Assemble potentiometer knob (45) to strike pin on plate (15).

b.After adjustment of step a., tighten both set screws in knob 1/4 to 3/8 turn after contact with shaft.

3.Connect lead (D) to control board (10).

4.Install display/cover (153) with four screws (28).

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Contents GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN Important Safety InstructionsINSTRUCTIONS-REPAIR309409E GMaxr 3900, 5900, 5900HD Airless Paint SprayersWarnings and Cautions Table of ContentsWarning Symbol Caution Symbol309409 INJECTION HAZARDTOXIC FLUID HAZARD RECOIL HAZARDHAZARD OF USING FLUIDS CONTAINING HALOGENATED HYDROCARBONS FIRE AND EXPLOSION HAZARDEQUIPMENT MISUSE HAZARD AFTER THE FIRST 20 HOURS OF OPERATION MaintenancePressure Relief Procedure INJECTION HAZARDCAUSE TroubleshootingPROBLEM SOLUTIONUse larger diameter hose and/or reduce overall Model 233701 shown Bearing Housing and Connecting RodInstallation RemovalDrive Housing Cut tie wrap holding gallon counting sensor wire to clutch wireSecure gallon counting sensor wire to clutch wire with a tie wrap Pinion Assembly/Rotor/Field/Shaft/Clutch Bottom View8699A 8703B 7. Fig. 7. Remove retaining ring 19e8. Tap pinion shaft 19d out with plastic mallet 19e 19d 10. Remove four screws 16 and lockwashers 11. Remove armature 4a 4aClamp Engine Clutch Housing8711A On/Off SwitchPressure Control Transducer Pressure Adjust PotentiometerPressure Control Control BoardDISPLAY After a fault, follow these steps to restart sprayerPressure Control Repair Digital Display MessagesRepair Displacement PumpInstallation RemovalModels 233701, 233706 and Parts Drawing - GMax 3900, 5900, 5900HD Hi-Boy SprayersDescription Parts List - GMax 3900, 5900, 5900HD Hi-Boy SprayersY Danger & Warning labels, tags, and cards are free Ref No. Part NoRef No. 19 and Parts List & Drawing - Pinion Assembly309409 Models 233700 and Parts Drawing - GMax 3900 and GMax 5900 Lo-Boy SprayersParts List - GMax 3900 and GMax 5900 Lo-Boy Sprayers Parts Drawing - Sprayer GMax 3900, 5900 and 5900HD Sprayers Models 233700 throughModels 233706 through 233708 233716 and Models 233700 through 233703 233705 through 233707 233716 and Parts List - SprayerPressure Control Wiring Diagram VIEW AModels 233702, 233703, 233707, 233708 Parts List/Drawing - Sprayers with RAC Tip, Gun & HoseAccessories Displacement Pump Repair KitsModel 233701 Technical DataDimensions GMaxGraco reserves the right to make changes at any time without notice Graco WarrantyADDITIONAL WARRANTY COVERAGE FOR GRACO CANADA CUSTOMERS
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