Multiquip Portable Generator DCA15SPXU4

Warning: Only perform with no load on the generator.

Place the selection dial on the multimeter to the W position, then select the sound icon.

With the engine OFF and no power applied to the relay, place the multimeter leads across terminals 95 and 96 on the relay and verify that there is continuity. This implies a CLOSED circuit, continuity.

PRESS the spring-loaded relay reset button.

Move the multimeter leads to terminals 97 and 98 on the relay and verify that there is no continuity. This implies an OPEN circuit, no continuity.

To trip the OCR, slide the manual trip lever on the relay and verify that the multimeter indicates an OPEN circuit across terminals 95 and 96. This implies an OPEN circuit, no continuity.

Move the multimeter leads to terminals 97 and 98 on the relay and verify that there is continuity. This implies a CLOSED circuit, continuity.

Engine OFF and voltage selector switch in the 3-Phase, 240/139V position

6-pin plug unplugged from the CN1 receptacle on the AVR

SPST toggle switch connected between the positive battery terminal and pin J on the 6-pin plug

Wire connected from the negative battery terminal to pin K on the 6-pin plug

Toggle switch in the OFF (open) position, engine speed switch set to the low position (idle), engine started and toggle switch placed in ON position (closed)

Engine speed switch in the high position and engine running at full rpm

Voltage at the U, V and W terminals on top of the main circuit breaker (line side)

Phase-to-phase and phase-to-neutral readings balanced

Warning: This adjustment requires trained personnel!

Turn the engine fault delay adjustment potentiometer 30 turns counterclockwise

This will allow for about 1 second of fault delay. Fault delay is begun after the engine has started.

The purpose of the delay is to allow time for oil pressure to build adequately, before the oil pressure monitor starts checking the oil pressure sender. High water temperature is also ignored during the fault delay time to allow engine coolant to circulate in the engine.

Sign off on the fault delay adjustment

NOTICE: For complete engine inspection and service specifications, consult the Engine Manufactures 'Owners' and/or 'Service' Manuals.

Air cleaner for restrictions and contaminants. Replace if necessary.

Cooling system hoses for cracks and distortions — tighten clamps or repair as needed.

Radiator for restrictions and corrosion.

Engine block heater for leaks and verify unit functioning properly. Engine block heater is an option on some units.

Coolant, fuel and oil leaks. Tighten connections or repair as needed.

Belts and pulleys for cracks and wear — adjust or repair as needed.

Governor and injection pump for leaks and proper operation.

Turbocharger for proper clearance and free movement as required. Reference engine service manual.

Check for rusted, corroded and oxidized electrical connections

Check for carbon flash deposits around the 120/240V AC receptacles

Check for signs of wire overheating

Check for infestation inside the generator

Check terminal lugs/bus bars for secure tightening

Check electrical connectors for proper seating

Check crimp connections for looseness