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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 of
f the
sys
-
tem,
when checking or servicing any part of the sys
-
tem
and whenever you stop painting
.
1. T
urn 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 V
alve, page 13
.
Inlet valve stuck or damaged
Depress
valve gently and pour in about 1 teaspoon
mineral
spirits. T
ry to
prime pump. Replace valve if
necessary.
See Inlet V
alve, page 13
.
0289
DEPRESS LIGHTL
Y
.
POUR IN 1 TEASPOON
MINERAL SPIRITS.
Loose inlet hose nut
Tighten
Pump will not start Power cord unplugged
Plug in.
ON/OFF switch turned of
f T
urn 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.
W
orn 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
.
W
orn 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
.
W
orn or damaged inlet valve
Replace. See page 13
.
W
orn or damaged outlet valve
Replace. See page 13
.
W
orn or damaged priming valve Replace. See page 14
.
W
orn roller
valve packings or needle
Repair
. See page 1
1.