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Troubleshooting
Troubleshooting
Mechanical/Fluid Flow
Follow Pressure Relief Procedure,
1.
page 12, before checking or repairing.
Problem
Pump output is low
28
2.
What to Check
If check is OK, go to next
check
Spray tip worn.
Spray tip clogged.
Paint supply.
Intake strainer clogged.
Intake valve ball and piston ball
are not seating properly.
Fluid filter or tip filter is clogged
or dirty.
Prime/spray valve leaking.
Verify pump does not continue
to stroke when gun trigger is
released. (prime/spray valve
not leaking.)
Leaking around throat packing
nut which may indicate worn or
damaged packings.
Battery has insufficient charge. Charge battery.
Check all possible problems and causes
before disassembling the unit.
What to Do
When check is not OK,
refer to this column
Follow Pressure Relief
Procedure, page 12, then
replace tip. See separate gun
or tip manual.
Relieve pressure. Check and
clean spray tip.
Refill and reprime pump.
Remove and clean, then
reinstall.
Remove intake valve and
clean. Check balls and seats
for nicks; replace if necessary.
See pump manual. Strain paint
before using to remove
particles that could clog pump.
Clean filter.
Follow Pressure Relief
Procedure, page 12, then
repair prime/spray valve.
Service pump. See pump
manual.
Replace packings. See pump
manual. Also check piston
valve seat for hardened paint
or nicks and replace if
necessary. Tighten packing
nut/wet-cup.
3A8179C
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