Generac Power Systems GUARDIAN 04137-0 - Manual (Page 14)

Section 3 - Maintenance
MAINTENANCE
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Guardian Liquid-cooled 8 kW Generators
3.1 25-HOUR BREAK-IN PERIOD
The first 25 hours of operation constitute the break-
n period for the standicy generator. Correctly break-
ng in the generator is essential to mitiiiriize oil con-
nimption and macdmize engine performance. During
he break-in period, observe the ibllowing rules:
. Run the generator at va.rious elecuical loads for
the first 25 hours of operation, to help seat
engine piston rings properly.
For the next 75 operating hours, avoid light
electrical loads.
' During this period, load the unit at 50 percent or
more of its rated capacity (4,000 watts or more).
Repeated light electrical loads during the break-
in period can cause improper seating of engine
piston rings, resulting in blowb\^ and high oil
consumption.
. Check the engine crankcase oil level frequently
during the break-in period. It is normal for oil
consumption to be high during this period.
, xkfter the 25 hour break-in period is completed,
perform the tasks recommended under "25
Hour Checkup.”
.2 25-HOUR CHECKUP
tlloiving the first 25 hours of operation, contact an
tithorized sendee facility for tlie following mainte-
ince. The generator ovmer is responsible for all
targes.
Change the engine crankcase oil and filter.
Check all fluid levels (engine coolant, fuel, bat-
ter\" electrolyte fluid).
Inspect cooling system hoses for deterioration
and leaks, all hose clamps for tightness and
security.
Check fuel system lines for leaks, tightness and
condition.
Check fuel injection timing,
Check/Adjust engine governed speed (frequency).
Inspect engine belts for condition, proper tension.
Check for correct AC voltage output.
Check
all generator receptacles and circuit
brealcers for condition and proper operation.
3 CHECKING THE ENGINE
OIL LEVEL
ter the 25-hour break-in period, check the engine oU
'el eveiy" eight hours or operation or at least once
ily before using the generator. For oil capacities, see
oecltications,” Section 1,7 (Page 6). For engine oil rec-
iinendations. see Section 1,9 (Page 7). To check the
gine oil level, proceed as follows (Figure 3.1):
Remove tlae dipstick and rvlpe it dry rvlth a
clean clotli.
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3.
Install the dipstick cap; then, remove it again.
The oil level should be at the dipstick “Full”
mark. If necessary, add oil to the “Full” mark
only. DO NOT FILL ABOVE THE “FULL” MARK.
Install the dipstick.
-A
CAUTION M. --------
Never operate the engine with the oil level
below the "Add" mark on the dipstick. Doing
this could damage the engine.
Figure 3.1 - Engine OH Servicing Points
Oil Filler
Cap
3.4 CHANGING THE ENGINE
GIL AND FILTER
See Section 1.9, “Engine Oil Recommendsfoons” (Page
7), for die proper oil grade for your application.
NOTE;
The engine oil and filter should be changed after
the
25-hour break-in period. See the “Service
Schedule,” Section 3.13 (Page 16), for subse­
quent oil and filter changes.
-A A-
CAUTiON
A .Any attempt to crank or start the engine before
it has been properly serviced with the recom­
mended oil may result in an engine failure.
To change tiie oil and filter, proceed as follows:
Refer to tlie “Sendee Schedule,” Section 3.13 (Page
16), for engine oU and filter change frequencies.
Drain the oil while the eng,ine is still warm from run­
ning. This means you should warm up the engine,
shut it down and drain It immediately as follows:
1. Remove tlie oil drain hose from its retaining clip,
located on the generator base frame.
2. Loosen and remove tlie oil drain hose cap, locat­
ed on tlie base frame end of tlie hose. Drain tlie
oil completely into a suitable container.