LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson

Electrical Troubleshooting Procedures LTC Repair
6.29 Checking Receptacle’s Circuit Breaker
See Graphic: wc_gr003081
WARNING
Electric shock hazard. Only qualified personnel should conduct this
test.
Complete this test with the machine running.
6.29.1 Using the AC voltage setting on the multimeter, measure the incoming
voltage to the receptacle’s circuit breaker by measuring between the
brown-yellow wire (a) and the wires (b) of the terminal strip. There
should be 115V or 230V±10% depending on model.
If the correct voltage is not measured, the receptacle’s circuit
breaker is not receiving voltage. Check the condition of the wiring
between the receptacle’s circuit breaker and the terminal strip.
Repair/replace the wiring as needed.
If the correct voltage is measured, continue.
6.29.2 Make sure the receptacle’s circuit breaker is in the ON position.
6.29.3 Using the AC voltage setting on the multimeter, measure the outgoing
voltage from the receptacle’s circuit breaker by measuring between the
outgoing wire (c) and the wires (b) of the terminal strip. There should
be 115V or 230V±10% depending on model.
If the correct voltage is not measured, the receptacle’s circuit
breaker is not functioning. Confirm that receptacle’s circuit
breaker is malfunctioning by checking its continuity. Replace the
circuit breaker if needed.
If the correct voltage is measured, continue troubleshooting by
checking the earth-leakage circuit breaker.
b
1000
F 200 V
20
2
200m
V- COM
A
1000
F 200 V
20
2
200m
V- COM
118
A
a
c
wc_gr003081