Doosan Doosan Generator G125 G125

1. Voltage Selector Door Interlock Switch

• Every three months or 250 operating hours, the interlock switch should be checked. Running with no electric load, open the VOLTAGE SELECTOR door. This will shutdown the engine and trip the main breaker. To reset, close the door.

2. High Containment Fluid Alarm System

• The operation of the high containment fluid alarm system should be checked every 3 months or whenever it appears not to be operating properly.

• The level switch is located at the lower end of a pipe at the bottom of the containment tank.

• Test the switch by unfastening the u-bolts holding the pipe, and then inverting the pipe to allow the switch float to fall.

• The “High Containment Level” LED should illuminate. Replace any defective switch.

• Drain the containment area using the drain plug at either end of the containment basin.;

Check Engine Shutdown System Switches (setting)

Replenish with a fresh mixture every twelve months

• Servicing or troubleshooting must be carried out strictly in accordance with instructions so as to avoid the risk of accidents and to maintain the machine in its original state.

• All such operations performed on the alternator should be undertaken by personnel with training of electrical and mechanical components.

• Before any intervention on the machine, ensure that it cannot be started by a manual or automatic system and that you have understood the operating principles of the system.

• It is advisable to check that circulation of air is not reduced by partial blocking of the suction and discharge louvres: mud, fibre, grease, etc.

• Cleaning product for the windings

WARNING! Do not use: Trichlorethylene, perchlorethylene, trichloroethane and any alkaline products.

Ensure all electric loads are disconnected, engine is stopped and main breaker is turned on.

VOLTAGE SELECTOR Switch set to 277/480V position and VSS door closed and latched

'Voltage' POT(P2) on regulator adjusted to full counterclockwise position

'Voltage' POT on control panel adjusted to full clockwise position

Generator frequency at no load on G10 - G40

Generator frequency at no load on G60 - G570

VOLTAGE OUTPUT MONITOR switch on the control panel set to L1-L2 position

'VOLTAGE' POT(P2) on the regulator adjusted to read 500V on AC voltmeter

• Daily check for loose wire routing clamps. Clamps must be secure and properly mounted. Also check wiring for wear, deterioration and vibration abrasion.

• Check daily for evidence of arcing around electrical terminals.

• Daily check that the grounding circuit is in accordance with the National Electrical Code Article 250-122 and the local code requirements. As a minimum, the copper wire size should be American Wire Gauge 8 (AWG#8) from the grounding terminal, frame, generator and engine block.

Daily check for loose, or frayed wiring insulation or sleeving.