Troubleshooting
24
3A4147B
Troubleshooting
Perform
Pressure Relief Procedure
, page 13.
PROBLEM
CAUSE
SOLUTION
For units with display:
CODE XX is displayed.
Fault condition exists
Determine fault correction from
table, page 27.
Pump output is low
Spray tip worn
Follow
Pressure Relief Procedure
on page 13, then replace tip. See
your separate gun or tip manual.
Spray tip clogged
Relieve pressure. Check and clean
spray tip.
Paint supply
Refill and reprime pump.
Intake strainer clogged
Remove and clean, then reinstall
Intake valve ball and piston ball are
not seating properly
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.
Fluid filter, tip filter, or tip is clogged
or dirty.
Clean filter.
Prime valve leaking
Relieve pressure. Repair prime
valve.
Verify pump does not continue to
stroke when gun trigger is released.
(Prime valve not leaking.)
Service pump; see pump manual.
Leaking around throat packing nut
which may indicate worn or
damaged packings.
Replace packings; see pump
manual. Also check piston valve
seat for hardened paint or nicks
and replace if necessary. Tighten
packing nut/wet-cup.
