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307-830 11
Troubleshooting
WARNING
Pressure Relief Procedure
T
o reduce the risk of serious bodily injury always
follow this procedure before checking or repairing the
sprayer.
1.
Engage the gun safety latch.
2. T
urn the ON/OFF switch to 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 to relieve pressure.
5.
Engage the gun safety latch.
6.
Open the pressure drain valve. Leave the valve
open until you are ready to spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above,
VER
Y SLOWL
Y
loosen the tip guard retaining nut or hose end cou
-
pling to relieve pressure gradually
, then loosen
completely
. 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 un
-
plugged or damaged, or building cir
-
cuit breaker or fuse has tripped
Check, reset or replace.
Motor overload switch
1
has opened
Unplug sprayer
, relieve pressure, allow
motor to cool, decrease pressure.
Pressure setting too low
Increase pressure.
Pressure control frozen or damaged
by over–pressurization
T
ry to thaw
2
, or replace pressure control.
Electric motor stops while
spraying
Power cord or extension cord un
-
plugged, or damaged, or building
circuit or fuse is blown
Check, reset or replace.
Motor overload switch
1
has opened
Unplug sprayer
, relieve pressure, allow
motor to cool, clear motor air passages of
dirt and overspray; decrease pressure.
Pressure setting too low
Increase pressure.
Spray tip plugged
Remove and clean.
W
rong type extension cord
Use maximum 200 ft (61 m), 3 wire,
12 gauge, grounded extension cord.
Electric motor runs, but low
paint output or no paint out
-
Piston ball check not seating
Service pump. See page 14.
paint output or no paint out
-
put, and pump is not stroking
Piston packings worn or damaged
Replace piston. See page 14.
put, and pump is not stroking
See the
PROBLEM, “
Not
enough paint pressure
”
on
Intake valve ball check not seating
Service pump. See page 14.
enough paint pressure”, on
page 12, also.
Pump is frozen
Thaw
2
pg ,
Pressure control frozen or damaged
by overpressurization
3
T
ry to thaw
2
, or replace pressure control.
Drive assembly damaged
Replace drive housing. See page 16.
Pump worn or damaged
Replace pump. See page 14.
Sprayer is not primed. Follow the procedure on page 7 again.