4.1.4 EFFECTS OF MOISTURE AND DIRT
Keep the generator set as clean and dry as possible.
Protect the unit against excessive dust, dirt, corrosive
vapors, etc. Permitting dirt and moisture to accumu-
late on generator windings will have an adverse effect
on the insulation resistance of those windings.
When moisture is allowed to remain in contact with
windings, some of the moisture will be retained in
voids and cracks in the insulation. This causes a
reduced insulation resistance and will eventually
cause problems. Dirt will make the problem worse,
since dirt tends to hold moisture in contact with
windings. Salt (as from sea air) will also worsen the
problem since it tends to absorb moisture from the
air. Salt and moisture, when combined, form a good
electrical conductor.
4.1.5 ENGINE OIL RECOMMENDATIONS
Use a high quality detergent oil that meets or exceeds
API Service SF, SF/CC or SF/CD requirements for
gasoline engines.
The PRIMARY recommended oil is a synthetic oil
such as MOBILE Formula 5W-30. Synthetic oil pro-
motes easier starts in cold weather and provides
maximum protection in hot weather.
Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine fail-
ure. The engine crankcase must be properly
filled with the recommended oil.
4.1.6 BATTERY
All lead-acid storage batteries will discharge when
not in use. The generator battery should be inspect-
ed as follows:
4.1.7 EVERY SIX MONTHS
Have battery state of charge and condition checked.
This should be done with automotive type battery
hydrometer.
Inspect battery posts and cables for tightness, corro-
sion. Clean and/or tighten as needed.
Also check battery fluid level, and, if necessary, fill
with DISTILLED WATER ONLY. DO NOT USE TAP
WATER IN BATTERY.
Servicing of the battery is to be performed or super-
vised by personnel knowledgeable of batteries and
the required precautions. Keep unauthorized person-
nel away from batteries.
When replacing the battery, use the following type of
battery: Group 26/26R 12-volt battery with a rating of
525 cold-cranking amps minimum at -17.8º C (0º F).
When using a maintenance-free battery, it is not nec-
essary to check the specific gravity or electrolyte level.
Have these procedures performed at the intervals
specified in the “Service Schedule.” A negative ground
system is used. Battery connections are shown on the
wiring diagrams. Make sure the battery is correctly
connected and terminals are tight. Observe battery
polarity when connecting the battery to the generator
set.
Do not dispose of the battery in a fire. The
battery is capable of exploding.
A battery presents a risk of electrical shock
and high short circuit current. The following
precautions are to be observed when working
on batteries:
• Remove watches, rings or other metal objects;
• Use tools with insulated handles;
• Wear rubber gloves and boots;
• Do not lay tools or metal parts on top of the
battery; and
• Disconnect charging source prior to connecting or dis-
connecting battery terminals.
Do not open or mutilate the battery. Released
electrolyte has been known to be harmful to
the skin and eyes, and to be toxic.
The electrolyte is a dilute sulfuric acid that is
harmful to the skin and eyes. It is electrically
conductive and corrosive.
The following procedures are to be observed:
• Wear full eye protection and protective clothing;
• Where electrolyte contacts the skin, wash it off
immediately with water;
• Where electrolyte contacts the eyes, immediately
flush thoroughly with water and seek medical
attention; and
• Spilled electrolyte is to be washed down with an
acid neutralizing agent. A common practice is to
use a solution of 1 pound (500 grams) bicarbonate
of soda to 1 gallon (4 liters) or water. The bicar-
bonate of soda solution is to be added until the
evidence of reaction (foaming) has ceased. The
resulting liquid is to be flushed with water and the
area dried.
Lead-acid batteries present a risk of fire
because they generate hydrogen gas. The
following procedures are to be followed:
!
!
DANGER
!
Section 4 — Maintenance
Generac APS 6.0 DC Auxiliary Power System
Generac
®
Power Systems, Inc.
15
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