Doosan Doosan Generator G290WCU-3B-T3 (C38) G290WCU-3B-T3 (C38)

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.;

With all electric loads disconnected, engine stopped and main breaker turned on, turn VOLTAGE SELECTOR Switch to 277/480V position, and close and latch the VSS door.

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 reading on AC voltmeter after adjusting Voltage POT(P2) on the regulator

Stability POT(P3) adjusted counter clockwise until the AC volts within ± 1 volt

Proper maintenance of the air cleaner provides maximum protection against airborne dust.

Squeeze the rubber valve (precleaner dirt dump periodically to ensure that it is not clogged).

To service the air cleaners, proceed as follows:

Inspect air cleaner housing for any condition that might cause a leak and correct as necessary.

Wipe inside of air cleaner housing with a clean, damp cloth to remove any dirt accumulation. This will permit better seal for gasket on filter element.

The air cleaner assembly (housing) should be inspected every 3 months or 500 hours for any leakage paths.

Make sure the inlet is free from obstruction.

Check Engine Shutdown System Switches (setting)

Replenish with a fresh mixture every twelve months

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

Check for evidence of arcing around electrical terminals.

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.

Check for loose, or frayed wiring insulation or sleeving.

Check for water in the fuel filter/water separator unit. Some engines have a translucent bowl for visual indication, and others have a drain valve below the primary element.

Clean the air vents of any obstruction or debris.

Check Evidence of Arcing around electrical terminals.

Check Loose Wire Routing Clamps.