Sherwin-Williams ULTIMATE 824-032 - Manual (Page 12)

12 824-033
Troubleshooting
TYPE OF PROBLEM WHAT TO CHECK
If check is OK, go to next check WHAT TO DO
When check is not OK refer to this column
Motor runs and pump strokes,
but output is low or there is no
output. Check extension cord size and length. Replace cord with a larger size, grounding
type extension cord.
Check paint supply. Refill and reprime pump.
Check for clogged intake strainer. Remove and clean strainer and reinstall.
Check for loose suction tube or loose fittings. Tighten; use thread sealant or sealing tape on
threads, if necessary.
Check for worn spray tip. Follow Pressure Relief Procedure
Warning, then replace tip. See your
separate gun or tip manual.
Check motor brushes; check for loose leads
and terminals, minimum 13 mm brush length,
broken or misaligned springs, or brushes
binding in holders. See page 13. Replace parts as needed. See page 13.
Check motor armature for shorts by using an
armature tester (growler). Replace motor. See page 20.
Check to see if pump continues to stroke
when gun trigger is released. With pump on
and primed, trigger gun momentarily, then
release and engage safety latch. Relieve
pressure, turn off and unplug sprayer. Service pump. See manual 307–806.
Check to see if intake valve ball and piston
ball are seating properly. Remove intake valve and clean. Check balls
and seats for nicks; replace if necessary.
See manual 307–806. Strain paint before
using to remove particles that could clog the
pump.
Check for leaking around throat packing nut
which may indicated worn or damaged
packings. Replace packings. See manual 307–806.
Also check piston valve seat for hardened
paint or nicks and replace if necessary.
Tighten the packing nut/wetcup.
Defective pressure control transducer. Replace pressure control transducer. See
page 17.
Motor runs but pump does not
stroke. Check displacement pump connecting rod
pin (20). See page 15. Replace pin, if missing. Be sure retainer
spring (35) is fully in groove all around
connecting rod. See page 15.
Check for frozen or hardened paint in the
pump (39). Thaw. See NOTE 1. Plug in sprayer and turn
on. Slowly increase pressure setting to see if
motor starts.
Be sure crank in drive housing rotates; plug
in sprayer and turn on briefly to check. Turn
off and unplug sprayer. Check drive housing assembly for damage
and replace if necessary. See page 23.
Motor is hot and runs
intermittently. Determine if sprayer was operated at high
pressure with small tips, which causes low
motor RPM and excessive heat build up. Decrease pressure setting or increase tip
size.
Be sure ambient temperature where sprayer
is located is no more than 90
_
F and sprayer
is not located in direct sun.
Move sprayer to shaded, cooler area, if
possible.
Determine in sprayer was turned on,
pressurized, but not operating for long
periods of time. Turn off sprayer whenever you stop spraying
for a while and relieve fluid pressure.
NOTE 1: Thaw the sprayer if water or water–based paint has frozen in it, by placing it in a warm area. Do not try to
start the sprayer until it has thawed completely. If paint hardened (dried) in the sprayer, replace the pump packings.
See manual 307–806.