Graco 309909H important safety instructions Replacing Main Circuit Board

Page 17

Repair

Replacing Main Circuit Board

CAUTION

To avoid damaging circuit board, wear a grounding strap.

1.Remove User Interface cover. See page 16.

2.Disconnect all wire connectors from board (301). FIG. 3.

3.Remove four screws (302) and replace board (301).

4.Reassemble. Refer to Electrical Schematic, page 22.

5.Recalibrate system. See ProMix Easy Operation Manual.

NOTE: If the main control board is replaced on units that use a flow meter, the flow meter calibra- tion data must be set using a PC and a Data Download Kit (Graco P/N 248403 for hazardous locations or Graco P/N 248404 for non-hazardous locations).

320

301

TI4561a

FIG. 3

309909H

17

Image 17

Contents Important Safety Instructions Repair PartsManual Conventions ContentsSeries Description Psi MPa, bar Approvals ProMix Easy ModelsComponent Manuals in English Description Related ManualsFire and Explosion Hazard Equipment Misuse Hazard Fluid Manifold to Gun Pressure Relief ProcedurePump to Fluid Manifold Problem Solution MaintenanceProblem Cause Solution TroubleshootingCircuit. See Electrical Schematic, Relieve pressure. Install larger tip. Follow Code Startup ErrorsOperating Errors Testing Error Code Alarm Active Problem CauseReplacing Air Filter Element RepairRemoval Software UpgradesReplacing Main Circuit Board Replacing Display Circuit Board Alternator Repair Pneumatic ControlReplacing Alternator Regulator Replacing AlarmReplacing Solenoids Follow Pressure Relief Procedure, Dispense Valve/Mix Manifold AssemblySchematic Pump Solenoid Expansion Board Schematic Main Control Board SchematicMain Control Board LEDs PinPart No Series A, Pump-based, Cart-mounted Air Spray Unit Parts78 Ref Cable ConnectionsNo. Part No. Description Pump and Meter-based, Wall-mounted Air Spray Units Pump Solenoid Cable Connections Description Qty See page 27 for model numbers and descriptionsPump-based, Wall-mounted Air Spray Units 494025 24 Ref See page 30 for model numbers and descriptions Meter-based, Wall-mounted High Pressure Units 65 Ref 4025 24 Ref See page 33 for model numbers and descriptions Pump-based, Wall-mounted High Pressure Units Muffler See page 36 for model numbers and descriptions Ft 5.2 ft Pump and Meter-based, Wall-mounted High Pressure Units TI4908a Muffler See page 40 for model numbers and descriptionsCheck Valve Side Tube Connections, Low Pressure PumpsP2P1 Tube Connections, High Pressure PumpsC1G1 P2 M1 Tube Connections, MetersPneumatic Schematic Part No. Description Qty Intrinsically Safe Pneumatic ControlSolenoid Module 306 Detail Alternator Module 304 DetailNon-intrinsically Safe Pneumatic Control 307 Display User InterfaceNo. Part No. Description Qty Pump Air Control Meter Air ControlTechnical Data Technical Data Graco Information Graco Standard Warranty