Electrical Troubleshooting Procedures LTC Repair
wc_tx000429gb.fm 100
7.15 Checking Voltage to the Main Circuit Breaker
See Graphic: wc_gr003095
Electric shock hazard. Only qualified personnel should conduct this
test. Do not perform this test if you or the machine are wet.
Complete this test with the machine running.
7.15.1 Remove the control panel front cover.
7.15.2 Using the AC voltage setting on the multimeter, measure the voltage
between the main circuit breaker at the red wire (a) and any of the
neutral wires at the terminal strip (b). There should be 120V±10%.
• If 120V±10% was not measured, check the continuity of the red
wire back to the generator. Then, check the condition of the gen-
erator by remagnetizing the rotor (flashing). See section Restor-
ing Rotor Magnetism/(Flashing)/Checking Rotor Winding.
• If 120V±10% was measured, continue.
7.15.3 In the same manner, check the voltage between the main circuit
breaker at the black wire (c) and any of the neutral wires at the terminal
strip (b).
• If 120V±10% was not measured, check the continuity of the red
wire back to the generator. Then, check the condition of the gen-
erator by remagnetizing the rotor (flashing). See section Restor-
ing Rotor Magnetism/(Flashing)/Checking Rotor Winding.
• If 120V±10% was measured, the generator is functioning.
7.15.4 Continue troubleshooting by checking the voltage to the terminal strip
and the function of the main circuit breaker.
WARNIN
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