10
307-730
TROUBLESHOOTING GUIDE
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including
injury from moving parts, or electric shock, always
follow this procedure whenever you shut off the sys-
tem, when checking or servicing any part of the sys-
tem and whenever you stop painting.
1. Turn the ON/OFF switch to OFF.
2. Unplug the power supply cord.
3. Trigger the roller valve to relieve pressure.
If you suspect that pressure is not fully relieved after
following the steps above, open the priming valve 2
turns counterclockwise.
WARNING
CAUTION
Thoroughly flush the system after each use to re-
duce down time and costly repair bills.
NOTE:
If you are not able to determine the cause of the
problem, or the problem and solution is not dis-
cussed in this chart, return the system to an au-
thorized service agency for repair.
PROBLEM
CAUSE
SOLUTION
Pump will not prime, or takes long time to prime Clogged suction tube filter
Clean.
Paint too thick
Thin; try pouring paint into suction tube.
Outlet valve spring worn or damaged
Pour paint into suction tube and try to prime system.
If it doesn’t prime in one minute, replace the outlet
spring. See Outlet Valve, page 13.
Inlet valve stuck or damaged
Depress valve gently and pour in about 1 teaspoon
mineral spirits. Try to prime pump. Replace valve if
necessary. See Inlet Valve, page 13.
É
É
Ç
Ç
É
É
Ç
Ç
0289
DEPRESS LIGHTLY.
POUR IN 1 TEASPOON
MINERAL SPIRITS.
Loose inlet hose nut
Tighten
Pump will not start
Power cord unplugged
Plug in.
ON/OFF switch turned off
Turn on.
Damaged motor
Replace. See page 15.
Fuse burned out.
Replace. See page 12. If it burns out again soon, re-
turn the system to an authorized repair agency for re-
pair.
Low or no paint flow
Clogged roller cover , diffuser, roller frame,
roller valve, or hose
Clean thoroughly after each use. See Flushing on
page 8.
Using more than 25 ft. (7.6 m) of 1/4” ID hose Use up to 100 ft. (30 m) of 3/8” ID hose. See CAU-
TION on page 2.
Loose inlet hose nut
Tighten.
Worn or damaged priming valve
Replace. See page 14.
Priming valve is open
Close.
Paint too thick
Thin: Follow manufacturer‘s recommendations.
Damaged pressure switch
Replace. See page 13.
Worn inlet and/or outlet valve
Replace. See page 13.
Pump runs after roller valve trigger is released Worn or damaged pressure switch
Replace. See page 13.
Worn or damaged inlet valve
Replace. See page 13.
Worn or damaged outlet valve
Replace. See page 13.
Worn or damaged priming valve
Replace. See page 14.
Worn roller valve packings or needle
Repair. See page 11.
