Checking Voltage To The Main Circuit Breaker - WACKER Group LTC 4 Repair Manual

Electrical Troubleshooting Procedures

7.15 Checking Voltage to the Main Circuit Breaker

See Graphic: wc_gr003095
WARNING
7.15.1 Remove the control panel front cover.
7.15.2 Using the AC voltage setting on the multimeter, measure the voltage
7.15.3 In the same manner, check the voltage between the main circuit
7.15.4 Continue troubleshooting by checking the voltage to the terminal strip
wc_tx000429gb.fm
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.
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.
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.
and the function of the main circuit breaker.
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LTC Repair