GENERAL INFORMATION
PART 1
Page 23
CLEANING THE GENERATOR
Caked or greasy dirt may be loosened with a soft brush or
a damp cloth. A Vacuum system may be used to clean up
loosened dirt. Dust and dirt may also be removed using dry,
low-pressure air (25 psi maximum).

Do not use sprayed water to clean the Generator. Some
of the water will remain on the Generator windings and
terminals and may cause very serious problems.
DRYING THE GENERATOR
The procedure for drying an alternator is as follows:
1. Open the Generator main circuit breaker.

Generator should have no electrical loads applied while
drying.
2. Disconnect all wires in a manner that allows the alternator
to be completed disconnected.
3. Provide an external source to blow warm, dry air through
the Generator interior (around the rotor and stator
windings.

Do not exceed 185º F (85ºC).
4. Re-connect stator lead.
5. Start the Generator and let it run for 2 or 3 hours.
6. Shutdown the Generator and repeat the insulation
resistance tests.
Section 1.5
Testing, Cleaning and Drying
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