LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
Electrical Troubleshooting Procedures LTC Repair 6.26 Checking Wiring to/from Ballast Transformers See Graphic: wc_gr003528 WARNING Electric shock hazard. Only qualified personnel should conduct this test. To check the wiring to and from the ballast transformer(s): 6.26.1 Turn off the engine. 6.26.2 Remove the control panel front cover. 6.26.3 Remove the screws (a) that secure the control panel/cover of the ballast box (b). Position the control panel/cover of the ballast box so you can access the wiring to the ballast transformers. 6.26.4 Check the B/Y (black-yellow) wire(s) (c) that run from the circuit breaker(s) to the ballast transformer(s). Repair the wiring as needed. 6.26.5 Check the R (red) wire(s) (d) that run from the ballast transformer(s) to the ballast capacitor(s). Repair the wiring as needed. 6.26.6 Check the Y (yellow) wire(s) (e) labelled “COMMON” that run from the ballast transformer(s) to the neutral of the long terminal strip. Repair the wiring as needed. 6.26.7 If all wiring is OK and 400V±10% is not reaching the ballast capacitor, the ballast transformer has failed; replace it. 112
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