AIRLESSCO LP 400, Service & Operation Manual

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24
25
TROUBLESHOOTING
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Machine does not start
CAUSE STEPS
STEP 1: After making sure that the machine is plugged into the wall, verify that the
on-off switch is in the ON position and that the pressure control knob is turned all the
way to the right (clockwise for maximum pressure).
STEP 2: Using your multi-meter, test the fuse for continuity or replace with a new
fuse. If the fuse reads good, move on to step three.
Control Settings
Power Source
STEP 3: Locate the L1 and L2 terminals on the board, and then using your multi-me-
ter check to make sure you have 110 volts AC across the two terminals (the cord wires
will still be attached). If there is no voltage at these leads, there is no power getting
to the machine. Check your power source (outlet, circuit breaker, extension cord, and
power cord). If you have AC voltage at the L1 and L2 terminals, go to step 4.
Fuse
Thermal Overload
Pressure Control Assembly
(Board)
STEP 4: Disconnect the two red motor leads (S1 & S2) and test for continuity between
them. No continuity means that the thermal coupler has opened due to excessive motor
heat. If the motor is still hot to the touch, allow it to cool and then retest. If the motor is
cool and there is not continuity on the red leads, contact your local electric motor repair
facility to repair/replace the thermal coupler. Continuity shows that the motor's thermal
coupler has not tripped. Proceed to step 5.
STEP 5: If everything checks out in steps one through four and the power indicating
light is still out, replace the pressure control assembly.
Refer to Figure 19