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Power Systems, Inc. 17
6.Remove OIL FILL CAP (Figure 11, page 15). Add
recommended oil (see SPECIFICATIONS). DO NOT
FILL ABOVE THE DIPSTICK “FULL” MARK.
Crankcase oil capacity is 4.0 U.S. quarts (3.8 liters)
CAUTION: After refilling the crankcase with oil,
always check oil level on dipstick. NEVER
OPERATE ENGINE WITH OIL BELOW THE DIP-
STICK “ADD” MARK.
7.Start engine and check for oil leaks.
COOLANT CHANGE
Every year, have Authorized Service Facility drain, flush
and refill the cooling system. See SPECIFICATIONS
(page 8) for cooling system recommendations.
MISCELLANEOUS MAINTENANCE
CLEANING THE GENERATOR
Keep your generator as clean and as dry as possible.
Dirt and moisture that accumulates on internal genera-
tor windings have an adverse effect on insulation resist-
ance.
Periodically clean generator exterior surfaces. A soft
brush may be used to loosen caked on dirt. You can use
a vacuum system or dry, low pressure air to remove any
accumulations of dirt. The generator is housed inside
an all-weather enclosure, clean the enclosure with a
soft, damp cloth or sponge and water.
Once each year have the generator cleaned and inspect-
ed by an Authorized Service Facility. That facility will
use dry, low pressure air to clean internal windings.
Parts inside the control console should be cleaned and
inspected at this time as well.
Finally, have the insulation resistance of stator and
rotor windings checked. If insulation resistances are
excessively low, the generator may require drying.
BATTERY
All lead-acid storage batteries discharge when not in
use. Refer to specific instructions and warnings that
accompany your battery. If such information is not
available, observe the following precautions when
handling a battery:
• DO NOT use jumper cables and a booster battery to
crank or start the generator engine.
• DO NOT recharge a weak battery while it is installed
in the generator. Remove battery from generator and
recharge in a well-ventilated area, away from fuel
vapors, sparks, heat or flames.
• Battery electrolyte fluid is an extremely caustic
sulfuric solution that can cause severe burns. DO
NOT permit fluid to contact eyes, skin, clothing,
painted surfaces, wiring insulation, etc. If you spill
any battery fluid, flush the affected area with clear
water immediately.
• Always wear safety glasses, rubber apron and gloves
when handling a battery.
• Batteries give off explosive hydrogen gas while
charging. The gas can form an explosive mixture
around the battery for several hours after charging.
Any spark, heat or flames can ignite the gas and
cause an explosion which can shatter the battery,
causing blindness or other serious injury.
BATTERY REPLACEMENT
Generac uses these different types of vented batteries on
units ranging up to 400 kW. When replacing batteries,
use the same number and the type of battery that
follows:
Note:
The BCI number should be located directly
on the battery.
Section 4 — Maintenance
Guardian Liquid-cooled 10 kW, 15 kW, 20 kW and 25 kW Generators
Generac P/N BCI Group No. CCA
058665 27F 700 @ 0 deg. F