Drying the generator – Generac Power Systems NP-40G User Manual
Page 19
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Section 1.4- INSULATION RESISTANCE
Drying the Generator
GENERAL:
If testing Indicates that the insulation resistance of a
winding Is below a safe value, the winding should be
dried before operating the unit Some recommended
drying methods include (a) heating units and (b) forced
air.
HEATING UNITS:
If drying Is needed, the generator can be enclosed In
a covering. Heating units can then be Installed to raise
the temperature about 15’-18* F. (8*-10* C.) above ambi
ent.
FORCED AIR:
Portable forced air heaters can be used to dry the
generator. Direct the heated air Into the generator’s air
intake openings. Run the unit at no-load. Air temperature
at the point of entry Into the generator should not exceed
150* F. (66* C.).