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Troubleshooting
3A6917A
17
Erratic or accelerated
pump speed
Fluid supply is exhausted
Refill the fluid supply and prime the pump.
Clogged suction
Clean the suction tube.
Open or worn piston valve
packings
Clear the piston valve. Replace the packings.
Open or worn intake valve
Clear or service the intake valve.
Clogged gun, hose, outlet,
etc.
Clear the gun, hose, outlet, etc.
Open or worn outlet check
valve
Clear or service the outlet check valve.
Cycles or fails to hold
pressure at stall
Worn intake or piston valve
or seals
Service the pump lower (see your lower manual).
Air bubbles in fluid
Loose suction line
Tighten suction line connections. Use compatible liquid
thread sealant or PTFE tape on connections.
Agitator/mixer is not
submerged
Submerge the agitator/mixer.
Agitator/mixer RPM is too
high
Lower the agitator/mixer RPM.
Poor finish or irregular
spray pattern
Incorrect fluid pressure at
gun
See your gun manual. Read the fluid manufacturer’s
recommendations.
Fluid is too thin or too thick
Adjust the fluid viscosity. Read the fluid manufacturer’s
recommendations.
Dirty, worn, or damaged
spray gun
Service the spray gun (see your spray gun manual).
Driver does not turn over
and LED is off
Over voltage (greater than
300 V)
Check the power supply.
No power to the 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 e-Xtreme Driver Operation/Repair
manual. Contact your Graco distributor or Tech Service for
more information.
Oil is leaking
Oil was over filled
Drain and refill oil as stated in
Drain plug is not tightened
properly
Torque to 18-23 ft-lb (25-30 N•m).
Seal cartridge o-ring
missing or damage
Replace the shaft bearing assembly.
Problem
Cause
Solution