Generac Power Systems 940 Manual Do Utilizador
Section 1.4
INSULATION RESISTANCE
Figure 3. Schematic- Stator Windings
USING SOLVENTS FOR CLEANING:
A solvent is generally required when dirt contains oil
or grease. Only petroleum distillates should be used
to clean electrical components. Recommended are
safety type petroleum solvents having a flash point
greater than 100° F. (38° C.).
Use a soft brush or cloth to apply the solvent. Use
care to avoid damaging magnet wire or winding insu-
lation. After cleaning, dry all components thoroughly
with moisture-free, low pressure compressed air.
A solvent is generally required when dirt contains oil
or grease. Only petroleum distillates should be used
to clean electrical components. Recommended are
safety type petroleum solvents having a flash point
greater than 100° F. (38° C.).
Use a soft brush or cloth to apply the solvent. Use
care to avoid damaging magnet wire or winding insu-
lation. After cleaning, dry all components thoroughly
with moisture-free, low pressure compressed air.
DANGER! DO NOT WORK WITH SOLVENTS
IN ANY ENCLOSED AREA. ALWAYS PRO-
VIDE ADEQUATE VENTILATION. FIRE,
EXPLOSION OR OTHER HEALTH HAZARDS
MAY EXIST UNLESS ADEQUATE VENTILA-
TION IS PROVIDED. WEAR EYE PROTEC-
TION. WEAR RUBBER GLOVES TO PROTECT
THE HANDS.
IN ANY ENCLOSED AREA. ALWAYS PRO-
VIDE ADEQUATE VENTILATION. FIRE,
EXPLOSION OR OTHER HEALTH HAZARDS
MAY EXIST UNLESS ADEQUATE VENTILA-
TION IS PROVIDED. WEAR EYE PROTEC-
TION. WEAR RUBBER GLOVES TO PROTECT
THE HANDS.
CAUTION! Some generators use epoxy or
polyester base winding varnishes. Use sol-
vents that do not at tack such materials.
polyester base winding varnishes. Use sol-
vents that do not at tack such materials.
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.
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 ambient.
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 ambient.
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 tem-
perature at the point of entry into the generator should
not exceed 150° F. (66° C.).
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 tem-
perature at the point of entry into the generator should
not exceed 150° F. (66° C.).
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