Troubleshooting
16
333208F
Air bubbles in fluid
Loosen suction line.
Tighten suction line connections. Use
compatible liquid thread sealant or PTFE
tape on connections.
Agitator/mixer is not submerged.
Submerge agitator/mixer.
Agitator/mixer RPM is too high.
Lower RPM.
Poor finish or irregular
spray pattern
Incorrect fluid pressure at gun.
See spray gun manual. Read fluid
manufacturer’s recommendations.
Fluid is too thin or too thick.
Adjust fluid viscosity. Read fluid
manufacturer’s recommendations.
Dirty, worn, or damaged spray gun.
Service spray gun. See spray gun manual.
Driver does not turn over
and LED is off
Over voltage (greater than 300 V)
Check power supply
No power to control board
Contact your Graco distributor or Tech
Service for more information.
Driver does not turn over
and LED is on
Encoder fault
Cycle power.
Recalibrate the encoder following the
procedure listed in the Electric Driver Manual
(333233).
Contact your Graco distributor or Tech
Service for more information.
Oil is leaking
Oil was over-filled
Drain and refill as stated in
Check Oil Level
,
Drain plug not tightened properly
Torque to 18-23 ft-lb (25-30 N•m).
Seal cartridge o-ring missing or
damaged.
Replace shaft bearing assembly.
* To determine if fluid hose or gun is obstructed, follow
Pressure Relief Procedure
, page 10. Disconnect fluid hose
and place a container at pump fluid outlet to catch any fluid. Turn pressure adjustment knob just enough
to start pump. If pump starts, the obstruction is in fluid hose or gun.
Problem
Cause
Solution
