309421 29
Advanced Troubleshooting
General Problem: Output is Low or Fluctuating (continued)
SPECIFIC PROBLEM CAUSE SOLUTION
Spray pattern has
variations, pressure
fluctuates excessively, or
motor runs very slowly.
Leads from motor to control board are
damaged, loose, or overheated.
Be sure terminals are centered and firmly
connected. Inspect wiring insulation and terminals
for signs of overheating, and replace any loose
terminals or damaged wiring. Securely reconnect
terminals.
Pressure control 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 at back of
drive housing (connected with tab to the right).
Control board is damaged.
CAUTION: Do not perform control board
diagnostics until you have determined that the
armature is good. A bad motor armature can
burn out a good control board.
See Control Board Diagnostics on page 32. If
damaged, replace control board using Control
Board Kit 243228 (see List of Kits, page 31).
Pressure control switch is damaged or worn
out.
Replace pressure control switch using Pressure
Control Switch Kit 244267 (see List of Kits,
page 31).
General Problem: There is No Output
SPECIFIC PROBLEM CAUSE SOLUTION
Power switch is on and
sprayer is plugged in but
See Basic Troubleshooting page 22.
,
pump does not cycle.
Motor runs, but pump does not
cycle.
Gear and/or yoke are damaged. Replace gear and yoke using Gear/Yoke Repair
Kit 245062 (see List of Kits, page 31).
Motor does not run. Water or paint entered pressure control
switch or shorted control board.
Clean out and/or dry out, and retry. Replace if
necessary using Pressure Control Switch Kit
244267 (see List of Kits, page 31).
To Next Page
Loading...
