Generac Power Systems Stationary Emergency Generator, Owner'S Manual

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ENGINE COOLANT
Check coolant level in coolant recovery bottle. See the Specifications
and Service Schedule sections.
Add recommended coolant mixture as necessary. •
Periodically remove radiator pressure cap (only when engine •
has cooled down) to make sure the coolant recovery system
is functioning properly. Coolant should be at bottom of radia-
tor filler neck. If coolant level is low, inspect gasket in radiator
pressure cap. Replace cap, if necessary. To have pressure cap
tested, contact a Service Facility. Inspect cooling system and
coolant recovery system for leaks.
COOLANT CHANGE
Every year, have a service facility drain, flush and refill the cooling
system. See the Specifications and Service Schedule for cooling
system recommendations.
OVERLOAD PROTECTION FOR ENGINE DC ELECTRICAL
SYSTEM
Engine cranking, start up and running are controlled by a solid
state Engine Controller circuit board. Battery voltage is delivered
to that circuit board via the control panel fuse. This overcurrent
protection device will open if the circuit is overloaded.
n
If a circuit breaker opens or a fuse element
melts, find the cause of the overload before
resetting the circuit breaker or replacing the
fuse.
EXERCISE SYSTEM
Starts the Stationary Emergency Generator engine once every
seven days and lets it run for 12 minutes.
PERFORM VISUAL INSPECTION
Complete a thorough visual inspection of the entire engine-genera-
tor monthly. Look for obvious damage, loose, missing or corroded
nuts, bolts and other fasteners. Look for fuel, oil or coolant leaks.
INSPECT EXHAUST SYSTEM
Inspect the exhaust system at least once every year. Check all
exhaust system pipes, mufflers, clamps, etc. for condition, tight-
ness, leaks, security, damage.
CHECK FAN BELT
Inspect fan belts every year. Replace any damaged, deterio- •
rated, worn or otherwise defective belt.
Check fan belt tension. Thumb pressure, exerted midway •
between pulleys, should deflect about 3/8 to 5/8 of an inch.
Adjust belt tension as required.
Check fan belt alignment (see Figure 10.3). •
Figure 10.3 – Fan Belt
INSPECT ENGINE GOVERNOR
Visually inspect electronic governor.
n
Do not attempt to adjust the governor. Only
qualified service facilities should adjust the
governor. Excessively high operating speeds
are dangerous and increase the risk of personal
injury. Low speeds impose a heavy load on the
engine when adequate engine power is not
available and may shorten engine life. Correct
rated frequency and voltage are supplied only
at the proper governed speed. Some connected
electrical load devices may be damaged by
incorrect frequency and/or voltage. Only quali-
fied service technicians should adjust the gov-
erned speed.
CHANGING THE ENGINE AIR FILTER
To replace the engine air filter, remove the air filter cover and
replace the air filter making sure it is positioned properly before
reattaching the cover (Figure 10.4).
See the Service Schedule for air filter maintenance.
10-2
Maint024 Rev . A 04/10
Maintenance