Generac Power Systems GUARDIAN 04137-0 - Manual (Page 16)

Section 3 - Maintenance
MAINTENANCE
Guardian Liquid-cooled 8 kW Generators
Figure 3.3 - Cooling Vent Locations
AIH OUTLET
GJJTHnH
3.7 COOLING SYSTEM
Air Intalce and outlet openings in the generator com­
partment must be open and unobstructed for contin­
ued proper operation. This includes such obstruc­
tions as high grass, weeds, brush, leaves and snow.
Witiiout sufficient cooling and ventilating air flow, the
engine/generator quiclfly overheats, which causes it
to shut down. (See Figure 3.3 for vent locations.)
-A
WARNING
A-
The exhaust system of this product gets extreme­
ly hot and remains hot after shutdown. High
grass, weeds, brush, leaves, etc. must remain
clear of the exhaust. Such materials may ignite
and burn from the heat of the exhaust system.
OVERLOAD PROTECTION FOR
ENGINE DC ELECTRICAL SYSTEM
Engine cranlting, start-up and running are con­
trolled by a solid-state engine controller circuit
board. Battery voltage is delivered to that circuit
board via a 30-arnp fuse. These overcuiTent protec­
tion devices will open if the circuit is overloaded,
3.8
-A
CAUTION
A"
A !f a circuit breaker opens or a fuse element melts,
you should find the cause of the overioad before
resetting the circuit breaker or replacing the fuse.
3.9 FUSE
The generator panel's 30-amp fuse (Figure 2.1, Page
8) protects the DC control circuit against overload.
The fuse is wired in series with the battery output
lead to the panel. If the fuse element has melted
open, you cannot crank or start the engine. You
siiould replace the fuse using only an identical 30-
amp replacement.
AIR INTAKE
CT
3.10 ENGINE COOLANT
Check the coolant level in the coolant recovery bot­
tle at least once daily or prior to use. Add the rec­
ommended coolant rruxture (see Section 1.7.2, Page
6) as necessary; the bottle should he kept half full. If
desired, you may add a high quality rust inliibitor to
the recommended ,50-,50 coolant rruxture. If added
consistently, the recommended rnixture will protect
the unit against freezing temperatures.
Periodically remove the radiator pressure cap to
make sure the coolant recover}' system is function­
ing properly. Coolant should be at the bottom of tire
radiator filler neck. If the coolant level is low,
inspect the gasket in the radiator pressure cap.
Replace the cap, if necessary'. To have the pressure
cap
tested, contact a Generac/Guardian
Authorized Dealer, inspect the cooling system and
coolant recovery system for leaks.
-A A-
A
Do not remove the radiator pressure cap while
the engine is hot or serious burns from boiling
liquid or steam could result.
Ethylene glycol base antifreeze is poisonous.
Do not use your mouth to siphon coolant from
the radiator, recovery bottle or any container,
Wash your hands thoroughly after handling.
Never store used antifreeze in an open contain­
er because animals are attracted to the smell
and taste of antifreeze even though it is poi­
sonous to them.
-A
CAUTION A-
Do not use any chromate base rust inhibitor with
ethylene glycol base antifreeze, or chromium
hydroxide ("green slime") will form and cause
overheating. Engines that have been operated
with a chromate base rust inhibitor must be
chemically cleaned before adding ethylene glycol
base antifreeze. Using any high silicate antifreeze
boosters or additives also will cause overheating.
We also recommend that you DO NOT use any
soluble oil inhibitor for this equipment.