Troubleshooting
Fluid Pump Runs Constantly
Troubleshooting Procedure:
With a pressure gauge plumbed into the paint hose, start the engine. Turn pump switch ON. Does sprayer exceed maximum pressure?
YES
1.Perform Pressure Relief Procedure (page 21), turn prime valve forward to SPRAY position, and turn power switch OFF.
2.Remove control box cover.
|
|
| Pump problem. See the proper fluid pump |
|
|
| manual for the sprayer for further trouble- |
NO |
|
| |
|
| shooting procedures. | |
|
|
| |
|
|
|
|
Disconnect clutch wires from control board (see diagram, page 29). Does the pump stop run- ning?
YES
Make sure clutch wires are plugged in (see dia- gram, page 29). Do the clutch test points read
YES
Unplug transducer from control board.
YES
Bad transducer.
Replace and test with a new one.
NO
NO
NO
Mechanical problem in the clutch pinion as- sembly (clutch may be close to the rotor).
Check for a short from the two clutch wires 
to the frame. If shorted, repair or replace
faulty wire.
Replace the control board.
24 | 332919C |
