Service Manual

Table Of Contents

5. Maintenance 10-2019

NOTICE

Do not use anything other than a Scotch Brite pad as this will cause

damage to the slip rings and alternator.

4. Replace the brush block access cover and start the generator set.

5.12 Exercising the Generator Set

NOTICE

Audible engine RPM variation may be heard while there is no load applied.

This is normal and does not affect generator set performance.

Exercising the generator set re-lubricates the engine and removes oxides from

electrical contacts. The result is better starting, more reliable operation, and longer

generator set life.

The generator set exerciser is capable of automatically starting the generator set

and letting it run for a pre-set time. The frequency selections are:

• Weekly

• Bimonthly

• Monthly

• Never

Refer to the Exercise Settings on page 31 section of this manual for more

information on setting up the exerciser.

5.13 Complete System Test

NOTICE

Only authorized and qualified maintenance technicians who are familiar with

the equipment and its operation should carry out this test.

A complete system test is recommended to verify that the electrical system is

working properly. Testing the system once every 200 hours or every 2 years is

required to make sure the transfer switch will transfer the load to the generator set if

there is a utility power failure. For more information, see the transfer switch owner

manual.

To initiate a complete system test:

1. Before starting:

• Check the oil level.

• Verify that fuel related components, such as manual valves, outside of the

generator set are open.

• See the Checklist section in the installation manual.