11
TROUBLESHOOTING GUIDE
WARNING
Pressure Relief Procedure
To reduce the risk of serious bodily injury , including
fluid injection, splashing in the eyes or on the skin, or
injury from moving parts, always follow this procedure
when you shut off the sprayer, when checking, adjust-
ing or cleaning the system, and when changing spray
tips.
1
Engage the gun safety latch.
2
Turn the ON/OFF switch OFF.
3
Unplug the power supply cord.
4
Disengage the gun safety latch. Hold a metal part
of the gun firmly to the side of a grounded metal
pail, and trigger the gun.
5
Engage the gun safety latch.
6
Open the fluid pressure drain valve and leave it
open until you start the sprayer again.
If you suspect the hose or spray tip is completely
clogged or that pressure is not fully relieved after fol-
lowing the steps above,
VERY SLOWLY loosen the
tip guard retaining nut or hose end coupling to relieve
pressure gradually. Now clear the tip or hose.
Check everything in the chart before disassembling the sprayer.
PROBLEM
CAUSE
SOLUTION
Electric motor won’t run
Power cord or extension cord unplugged,
or damaged, or building circuit breaker or
fuse has tripped.
Check, reset or replace.
Motor overload switch
1
has opened.
Unplug power supply cord, relieve pressure, al-
low motor to cool, decrease pressure.
Pressure setting is too low.
Increase pressure.
Pressure control frozen or damaged by
overpressurization.
Try to thaw
2
, or replace pressure control.
Electric motor stops while spraying Power cord or extension cord unplugged,
or damaged, or building circuit or fuse is
blown.
Check, reset or replace.
Motor overload switch
1
has opened.
Unplug the power supply cord, relieve pressure,
allow motor to cool, decrease pressure.
Pressure setting is too low.
Increase pressure.
Spray tip is plugged.
Remove and clean.
Wrong type of extension cord.
Use maximum 15 m (50 ft), 3 wires, 2.5 mm (12
gauge) minimum gauge, grounded extension
cord.
Electric motor runs, but low paint
output or no paint output,
OR pump is not stroking
Piston ball check not seating.
Service the pump. See page 19.
See the
PROBLEM, “Not enough
paint pressure”, on page 12, also
Piston packings are worn or damaged.
Replace the piston. See page 19.
Intake valve ball check not seating.
Service the pump. See page 19.
.
Pump is frozen.
Thaw
2
Pressure control frozen or damaged by
overpressurization
3.
Try to thaw
2
, or replace pressure control.
Drive assembly damaged.
Replace the drive housing. See page 14.
Displacement pump worn or damaged.
Replace the displacement pump. See page 19.
Sprayer is not primed.
Prime the sprayer. See page 6.
Electric motor labors when starting,
and trips building circuit breaker ,
fuse or motor overload switch
Start switch has failed.
Replace the start switch. See page 16.
Motor capacitor has failed.
Replace the capacitor. See page 16.
Motor is incorrectly wired for voltage being
used.
Verify wiring. See page 5.
Summary of Contents for 220-834
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