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4.1 MAINTENANCE
If this Equipment does not operate properly, stop work immediately and inves-
tigate the cause of the malfunction. Maintenance work must be performed by
an experienced person, and electrical work by a trained electrician. Do not
permit untrained persons to inspect, clean, or repair this Equipment. Use only
recommended replacement parts.
4.1.1 Cleaning
Since there are no moving parts (other than the fan) in the power source,
maintenance consists mainly of keeping the interior of the cabinet clean.
Periodically, remove the cover from the cabinet and blow accumulated dust
and dirt from the air passages and the interior components, using clean low
pressure air. It is imperative that the air passages, to the interior of the unit,
be kept free of dirt accumulation to ensure adequate circulation of cooling air,
especially over the rectifier bridge plates and PC boards. The length of time
between cleaning will depend on the location of the unit and the amount of
dust in the atmosphere.
4.1.2 Lubrication
Fan motors with oil tubes require lubrication after 1 year of service. Motors with-
out oil tubes are permanently lubricated and do not require any attention.
4.1.3 Spark Gap Servicing
This component is part of the high frequency assembly. It will probably be
necessary to readjust these gaps after extended operation, or if erratic high
frequency operation is noted. It is important that the gaps be adjusted with a
feeler gauge rather than by eye. Cleaning and dressing of spark gap points
is not recommended since the points are tungsten and difficult to file. Points
(P/N 673578) should be replaced as a set.
SECTION 4 MAINTENANCE
Be sure that the wall disconnect switch
or circuit breaker is open before attempt-
ing any inspection or work inside of
the power source. Always wear safety
goggles with side shields when blowing
out the unit with low pressure air.
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