Troubleshooting - Graco GX21 Cordless Operation, Parts

Troubleshooting

Problem
Motor does not run:
(verify battery is installed correctly and
fully charged, and power switch is on)
3A8429A
1.
2.
3.
Cause
Easy access door not fully closed.
Pressure control knob is set at zero
pressure.
Pump is seized
(Paint has hardened in pump
or
Water is frozen in pump.)
Motor or control is damaged.
Battery has insufficient charge.
Battery is defective.
Troubleshooting
Follow Pressure Relief Procedure,
page 13, before checking or repairing.
Solutions at the beginning of each prob-
lem listed are the most common. Start
at the beginning and continue down the
list to find a solution.
Check everything in this Troubleshooting
Table before you bring the sprayer to an
authorized service center.
Verify that easy access door is closed
and latched. See page 34.
Turn pressure control knob clockwise to
increase pressure setting.
Turn ON/OFF switch off and remove
battery.
If frozen do NOT try to start sprayer until
it is completely thawed or it may
damage the motor, control board and/or
drive train.
Place sprayer in warm area for several
hours.
If not frozen, check for hardened paint in
pump. If paint has hardened in pump.
See Pump Removal, page 32.
If motor does not turn with pump
repaired, consult a Graco authorized
retailer, distributor, or service center.
Consult a Graco authorized retailer,
distributor, or service center.
Charge battery.
Replace battery.
Solution
35