AIRLESSCO SP200 - Manual (Page 25)

Control Board Diagnostics (SP300, Mustang 3100)
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Control Board Diagnostics (SP300, Mustang 3100)
NOTE: Check for motor problems before replacing con-
trol board. A damaged motor may burn out a good con-
trol card.
Check for a damaged control board or pressure control
switch as follows:
1. Relieve Pressure, page 10.
2. Unplug electrical cord.
3. Remove four cover screws and front cover.
Remove motor enclosure.
4. Remove yoke and guide rods.
5. Remove gear.
6. Remove pressure control harness from control
board. Using tip of small, flat blade screwdriver,
press tab on right side connector to release.
7. Attach harness from a pressure control switch you
know is functioning correctly to control board.
NOTE: Pressure control switch does not have to be
installed in pump.
8. Turn pressure control adjustment knob (C) +to max-
imum pressure setting.
9. Plug electrical cord into 120VAC receptacle.
10. Turn power switch (B) ON.
• If motor runs, replace pressure switch. Pres-
sure Control Switch Kit, page 26.
• If motor does not run, replace control board
repeat test. Control Board Kit, page 26.
Control Board Diagnostics (SP200, Mustang 2400)
NOTE: Check for motor problems before replacing con-
trol board. A damaged motor may burn out a good con-
trol card 1. Unplug electrical cord and Relieve Pressure, page
10.
2. Remove enclosure and check all control board con-
nectors for proper installation (see Wiring Diagram,
page 33).
3. Check fuse on control board. If fuse is blown, deter-
mine the cause before replacing control board (see
Advanced Troubleshooting, page 17).
Pump Diagnostics
When pump packings wear, paint begins to leak down
the outside of the pump. At the first sign of leakage,
replace the pump or additional damage to the drive train
could occur.
1. SP200, Mustang 2400: Replace pump using Pump
Replacement (Complete). See List of Kits, page
26.
SP300, Mustang 3100: Replace pump using Pump
Repair kit. See List of Kits, page 26.
2. If there is no paint leakage, see Advanced
Troubleshooting, page 17. Pump may not be
defective.
NOTICE
To avoid damage, when repairing or cleaning the
pump, never submerge pump in water or allow fluid
to enter pressure control.