Graco 3A4133 Operation - Repair - Parts page 38

Troubleshooting
Sprayer Will Not Shut Off
1. Perform Pressure Relief Procedure,
page 12. Leave prime valve open
(down) and turn ON/OFF switch OFF.
Troubleshooting Procedure
Plumb pressure gauge into paint hose,
plug sprayer in, and turn power switch ON.
Does sprayer reach or exceed
its maximum pressure?
Is the control board status light on?
Unplug the transducer from control board.
Does motor stop running?
Bad transducer.
Replace and test with a new one.
38
g
YES
YES
YES
2. Remove control box cover so the
control board status light can be viewed
if available.
Mechanical problem:
See the proper fluid pump
NO
manual for the sprayer for
further troubleshooting procedures.
Replace the control board.
NO
Replace the control board.
NO
ti24731a
3A4187C