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TROUBLESHOOTING CHART
WARNING
To reduce the risk
of
serious bodily injury, including injection, splashing in the eyes or on the skin, or injury from
Pressure
Relief
Procedure
moving parts, follow this procedure whenever you shut off the pump, when checking or repairing any part of the
system, when installing, cleaning or changing spray tips, and whenever you stop spraying. (1) Engage the gun
safety latch.
(2)
Close the pump air regulator. (3) Close the bleed-type master air valve. (4) Disengage the gun safe-
ty
latch.
(5)
Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve
pressure. (6) Engage the gun safety latch.
(7)
Open the drain valve, having
a
container ready to catch the drainage.
(8) Leave the drain 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.
VERY SLOWLY loosen the tip guard retaining nut or hose end coupling and relieve
Dressure araduallv. then loosen comDletelv. Now clear the
tiD
or hose obstruction.
I
W
A
R
N
I
N
G
1
Moving
parts
in the piston can
Dinch
or
amDutate
Never operate the pump with the air motor plate removed.
PROBLEM
~~
~~~
Pump does not operate,
or no fluid flow
Pump operates but output is low
Erratic or accelerated operation
h a y s
follow the Pressure Ralief
CAUSE
Loose or broken pump parts
supply
Restricted line or inadequate air
Exhausted fluid supply
Clogged fluid hoses
Fluid intake or piston valves
need adjustment
Damaged. air motor
Insufficient air supply
Exhausted fluid supply
Obstructed gun or dispensing
valve
Damaged fluid pump packings
take valve
Held open or worn piston or in-
Exhausted fluid supply
Fluid intake or piston valve worn
ocedure Warning first1
7
"
"
"
SOLUTION*
Disassemble, check, repair
Clear, increase
Refill and prime
Clean, or replace
Adjust, see page 9
Repair; see
306-982
Increase
Refill and prime
Clear
Replace, see page
8
Repair. See 307-719
Refill and prime
ReDair: see
D a m
8
306-726
7
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