LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
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LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson

LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson

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21.08.2013 Views

Electrical Troubleshooting Procedures LTC Repair 6.21 Checking Individual Circuit Breakers See Graphic: wc_gr003073 WARNING 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. Test power to all circuit breakers or just the circuit breaker in question. 6.21.1 Unplug the light(s) at the upper mast quick-disconnect plugs or disconnect the lights at the junction box. 6.21.2 Remove control panel front cover. 6.21.3 Place the main circuit breaker in the ON position. 6.21.4 Using the AC voltage setting on the multimeter, test for 230V±10% incoming voltage by measuring across the input wires (a) (R/B, R, Br, or Br/Y (Br/W on some models)) at the back of the circuit breaker(s) and the wires at the terminal strip (b). If 230V±10% is not measured, it indicates a problem with voltage reaching the circuit breaker. Check the continuity of the wiring between the terminal strip and the circuit breaker. Repair or replace the wiring as needed. If 230V±10% is measured at the circuit breaker, continue. 6.21.5 Place the circuit breaker being tested in the ON position and measure the voltage between the outgoing side of the circuit breaker (c) and the wires at the terminal strip (b). If 230V±10% is not measured, it indicates a problem with the circuit breaker. Check the continuity of the circuit breaker. Replace the circuit breaker if needed. If 230V±10% is measured, voltage is being supplied through the circuit breaker. Continue troubleshooting by checking the function of control panel capacitors. See section Checking Incoming Voltage to Control Panel Capacitor(s). 102

LTC Repair Electrical Troubleshooting b 1000 F 200 V 20 2 200m V- COM 103 A c a wc_gr003073

<strong>LTC</strong> <strong>Repair</strong> Electrical <strong>Troubleshooting</strong><br />

b<br />

1000<br />

F 200 V<br />

20<br />

2<br />

200m<br />

V- COM<br />

103<br />

A<br />

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wc_gr003073

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