Advanced Troubleshooting
26
312004B
Control board is damaged.
CAUTION:
Do not perform control
board diagnostics until you have
determined the armature is good.
A damaged armature can burn out
a good control board.
See
Control Board Diagnostics
, page 31. If damaged
replace control board using
Control Board Kit
, page
28.
Motor runs and pump cycles, but
pressure does not build up.
Intake valve ball or outlet valve ball
is not seating properly.
Remove and clean valves and check balls and seats for
nicks; replace if necessary. Strain paint before spraying
to remove particles that could clog pump.
Pump
Service
, page 31.
Pump packings are worn or
damaged.
Check for leaking around throat packing nut. Replace
pump packings if there are leaks.
Pump Service
, page
31.
Project Painter 5 and Project
Painter 7 - AllControl leaking.
Check Drain Valve for debris trapped on seat and for
worn parts. Torque to 130-180 in-lb (14.6-20.3 N•m). If
parts are worn, replace using
Drain Valve Kit
, page 28.
SR7, ProX7 and ProX9 -
Prime/Spray Valve leaking.
Check Prime/Spray Valve for debris trapped on seat
and for worn parts. Torque to 130-180 in-lb (14.6-20.3
N•m). If parts are worn, replace valve using
Prime/Spray Valve Kit
, page 28.
Spray pattern has variations,
pressure fluctuates excessively, or
motor runs very slowly.
All models - leads from motor
or SR7, ProX7 and ProX9 -
Pressure switch to control board is
damaged, loose or overheated
Be sure terminals are centered and firmly connected.
Inspect wiring insulation and terminals for signs of
overheating. Replace any loose terminals or damaged
wiring. Securely reconnect terminals.
SR7, ProX7 and ProX9 - Pressure
switch leads are pinched between
pump and drive housing or
between front cover and drive
housing.
Make sure pressure control harness is routed behind
pump, through retention clip and connected to control
board connector on control board (connect with tab to
right).
Control board is damaged.
CAUTION:
Do not perform control
board diagnostics until you have
determined the armature is good.
A bad armature can burn out a
good control board.
See
Control Board Diagnostics
, page 31. If damaged,
replace control board using
Control Board Kit
, page
28.
Project Painter 5 and Project
Painter 7 - AllControl is damaged
or worn out.
Check AllControl for debris trapped on seat and for
worn parts. Torque to 140-160 in-lb (15.8-18.1 N•m). If
parts are worn, replace AllControl using
AllControl Kit
,
page 28.
SR7, ProX7 and ProX9 - Pressure
control switch is damaged or worn
out.
Replace pressure control switch using
Pressure
Control Switch Kit
, page 28.
Specific Problem
Cause
Solution
Summary of Contents for 261800
Page 35: ...Notes 312004B 35 Notes ...
Page 39: ...Notes 312004B 39 Notes ...
Page 45: ...Notes 312004B 45 Notes ...
