Troubleshooting
3A4180C 25
Fluid is spitting from gun Air in pump or hose. Check and tighten all fluid
connections. Cycle pump as slowly
as possible during priming.
Spray tip is partially clogged. Clear tip. See Clear Tip Clog, page
19.
Fluid supply is low or empty. Refill fluid supply. Prime pump. See
pump manual. Check fluid supply
often to prevent running pump dry.
Pump is difficult to prime Air in pump or hose. Check and tighten all fluid
connections. Cycle pump as slowly
as possible during priming.
Intake valve is leaking. Clean intake valve. Be sure ball
seat is not nicked or worn and that
ball seats well. Reassemble valve.
Pump packings are worn. Replace pump packings. See pump
manual.
Paint is too thick. Thin the paint according to supplier
recommendations.
Sprayer operates for 5 to 10
minutes then stops
Pump packing nut too tight. When
pump packing nut is too tight the
packings on the pump rod restrict
pump action and overloads the
motor.
Loosen pump packing nut. Check
for leaks around throat. If
necessary, replace pump packings.
See Pump manual.
Problem
What to Check
If check is OK, go to next
check
What to Do
When check is not OK,
refer to this column
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