Generator Maintenance; Engine Oil - Generac Power Systems GEN27WN Operator's Manual

Liquid-cooled residential generator system
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High Temperature (FC_7)
This fault is indicated by fault code FC_7 and seven blinks on
the LED indicator. The contacts of the coolant temperature
switch are normally open. If the engine coolant temperature
exceeds approximately 115.5°C (240°F), the fault is detected
and the engine shuts down.
Common causes for this condition include running the
unit with all access doors removed, obstructed air inlet or
exhaust port, low oil or coolant level, or debris in the engine
compartment or radiator.
To resolve the problem, let the engine cool down and remove
any accumulated debris and obstructions. Ensure that the
access doors are installed whenever the unit is running.
Transfer Switch Fault (FC_8)
This fault is indicated by fault code FC_8 and eight blinks on
the LED indicator (if transfer switch is equipped with fault
detection). The most likely cause of this fault is a blown fuse
in the transfer switch.
To remedy the problem, contact your installer or an
Authorized Dealer.

Generator Maintenance

The generator warranty does not cover items that have been
subjected to operator abuse or neglect. To receive full value
from the warranty, the operator must maintain the system as
instructed in the operator's manual.
All adjustments should be made at least once each season.
Follow the requirements in the operator's manual.
Generator maintenance consists of keeping the unit
clean. Operate the unit in an environment where it will
not be exposed to excessive dust, dirt, moisture or any
corrosive vapors. Cooling air louvers on the enclosure
must not become clogged with snow, leaves, or any other
foreign material.
Check the cleanliness of the unit frequently and clean when
dust, dirt, oil, moisture or other foreign substances are
visible on its exterior/interior surface.
NOTE: DO NOT use direct spray from a garden hose to
clean generator. Water can enter the engine and generator
and cause problems.
Engine Maintenance
An engine manual was packaged with this system. Please
refer there for all engine-related maintenance topics.
However, proper engine cooling and lubrication are so
important we give them special mention here.

Engine Oil

The system is filled with the recommended non-synthetic oil
(API SL 10W-30W). This allows for system operation in a
wide range of temperature and climate conditions.
NOTE: Refer to the engine operator's manual for
recommended oil change intervals.
Shown here is the oil drain hose (B) and the oil filter
location (A) for the 30kW generator:
Shown here is the oil drain hose (B) and the oil filter
location (A) for the 45kW generator:
a
B
a
B
19

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This manual is also suitable for:

Gen30wlGen42wnGen45wl

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