OUT-OF-SERVICE
PROTECTION
Generator sets removed from service for extended
periods of time should be protected from rust and
corrosion.
Onan recommends the following protec-
tive procedure—
For One Month
1.
Run the engine at 1800
r/min
and treat the upper
cylinders by spraying an engine preservative oil
(SAE 10) into the carburetor air intake for about
two minutes. Open the throttlefora short burst of
speed,
then shut off the ignition and allow the
engine to come to a stop while continuing to
spray the oil into the carburetor air intake.
Disconnect and remove battery.
2.
Leave the Spark plugs installed and cover all
engine openings with dust-proof caps or shields.
3. Drain the oil, water and gasoline.
For Indefinite Period
1.
Drain the crankcase completely and refill with an
engine preservative oil (SAE 10).
2.
Run the engine until it is completely out of
gasoline, then restart and. run it on an unleaded,
undyed gasoline for at least 10 minutes. Run the
engine at 1800
r/min
and treatthe upper cylinders
by spraying an engine preservative oil (SAE 10)
into the carburetor air intake for about two
minutes. Open the throttle for a short burst of
speed,
shut off the ignition and allow the engine
to come to a stop while continuing to spray theoil
into the carburetor air intake.
3. Disconnect and remove battery. Follow standard
battery storage procedure. Apply film of non-
conductive grease to terminal lugs.
4.
Drain the oil and gasoline. Drain the water at the
bottom of the radiator and side of the block.
5. Remove all grease and oil from the exterior
surfaces of the engine.
6. Leave the spark plugs installed.
7. Seal all engine openings and accessories with
water resistant adhesive tape. Mask off all areas to
be used for electrical contact.
8. Make sure all surfaces are dry, then spray all
taped openings, all engine accessories including
ignition wiring, and all exterior surfaces of the
engine with an ignition insulation compound.
9. Fill fuel tank to prevent condensate contaminates.
10.
Provide suitable cover for entire unit.
RETURNING
UNIT
TO
SERVICE
1.
Remove cover and all protective wrapping.
Remove.plug from exhaust outlet.
2.
Refill crankcase with correct viscosity oil.
3. Clean and check battery. Measure specific gravity
(1.260 at 25° C (77° F) and verify level to be at split
ring.
If specific gravity is low, charge until correct
value is obtained. If level is low, add distilled water
and charge until specific gravity is correct. DO
NOT OVERCHARGE.
WARNING j
Oo not
smoke while servicing batteries.
Explosive gases are emitted from
batteries in operation. Ignition of these gases can cause
serious personal injury.
4.
Connect batteries.
5. Fill coolant system as described under
PRESTART SERVICE.
6. Verify that no loads are connected to the
generator.
7. Start engine.
After engine has started, excessive blue smoke will be
exhausted and the engine will run rough until the rust inhibitor
or oil has bumed away.
8. After start, apply load to at least 50% of rated
capacity.
9. Check all gauges to be reading correctly. Unit is
ready for service.
BATTERY,
HOT LOCATION
Batteries will self discharge very quickly when in-
stalled where the ambient temperature is consistently
above 90°F (32.2°C), such as in a boiler room. To
lengthen battery life, dilute the electrolyte from its
normal 1.275 specific gravity reading at full charge to
a 1.225 reading. The cranking power is reduced
slightly when the electrolyte is so diluted, but if the
temperature is above 90° F (32.2°C), this shouid not
be noticed. The lengthened battery life will be worth,
the effort.
1.
Fully charge the battery.
2.
With the battery still on charge, draw off the
electrolyte above the plates in each
cell.
DO NOT
ATTEMPT TO POUR OFF; use an hydrometer or
filler bulb ahd dispose of it in a safe manner. Avoid
skin or clothing contact with the electrolyte.
3. Refill each cell with distilled water, to normal
level.
4.
Continue charging for 1 hour at a 4- to 6-hour
rate.
5. Test each
cell.
If the specific gravity is still above
1.255,
repeat steps 2, 3, and 4 until the reading is
reduced to
1.225.
Usually, repeating steps twice is
sufficient.
26
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