Baldor PG 6000 manual Problems and Solutions, 1Troubleshooting Guide, Service, Parts

Problems and Solutions

Some of the more common problems are listed in Table 5-1. This information is intended to be a check or verification that simple causes can be located and fixed. It is not an exhaustive “how to” for all types of problems. Procedures that require in depth knowledge or skills (like flashing the field) should be referred to generator service facility.

Table 5-1 Troubleshooting Guide

Problem	Possible Cause	Remedy
Engine will not start	No fuel.	Check that fuel valves are ON. Check fuel level in fuel tank.
	Restricted air flow.	Check/replace air filter.
	No spark.	Check/replace spark plug(s). Check that engine switch is in Start
		position.
Engine starts but will not run smoothly	Fuel or ignition problem	Refer to engine manual.
Engine overheats	Excessive load	Remove one or more electrical loads.
	Debris or dirt buildup on engine	Remove debris. Clean engine surfaces to allow cooling.
No output voltage	Ciruit Breaker tripped or defective.	Reset circuit breaker or replace if required.
	Loss of residual magnetism in exciter	Flash field.
	field poles.
	Open in stator windings	Check for continuity in windings. Return to factory for repair if open.
	Defective exciter circuit.	Check/replace diode and capacitor and flash the field.
Output voltage varies	Irregular speed (fixed speed mode)	Check engine for malfunction or load for fluctuation
	Fluctuating speed (fixed speed mode)	Stabilize load. The addition of a lamp load (resistance load) may
		compensate partially for load changes caused by intermittent motor
		operation. Do not overload.
	Loose terminal or load connections	Verify all connections are proper and check tighness torque of
		terminals.
	Defective bearing (uneven air gap)	Replace worn bearing

Low output voltage	Low engine speed
	Excessive load
	High resistance connections −
	connections will be warm or hot
	Shorted field

Check that the Auto Idle switch is in OFF position (if installed). Check engine for malfunction or system for overload. Reduce load. Verify all connections are proper and check tighness torque of terminals.

Test field coils for possible short by checking resistance with an ohmmeter or resistancebridge. Return rotor assembly to service center for repair if alternator field coils are shorted.

		Low power factor	Reduce inductive (motor) load. Some AC motors use about the
			same current regardless of load. Do not use motors of greater
			horsepower rating than is necessary to move the mechanical load.
High output voltage		Excessive speed (fixed speed mode)	Check engine for malfunction
Electrical shock when frame is touched		Static charge.	Ground generator frame at local reference ground (see Section 3).
		Grounded armature or field coil.	Return to service center for repair
Mechanical noise		Defective bearing	Replace bearing
		Rotor rubbing on stator	Bad bearing − replace.
			Bent shaft − return to service center.
			Loose end bell − tighten;
			Loose drive Discs − tighten
		Loose or misaligned coupling	Tighten; align coupling and alternator shaft to engine shaft.
Service	Service for your generator can be obtained from a generator service center. Please have the
	following information available:
	The model number and serial number of the generator set.
	A complete and accurate description of the problem.
Parts	Parts for your generator can be obtained from a generator service center. Please have the

following information available:

The model number and serial number of the generator set.

A complete and accurate description of the part (part number if known).

Note: Engine parts can usually be obtained by using the information in the engine manufacturer’s owner’s manual.

5-2 Troubleshooting and Maintenance MN2418