14
Generac
®
Power Systems, Inc.
Section 3 – Maintenance
IMPACT-36 plus II Recreational Vehicle Generator
3.9
INVERTER
All repairs of the inverter must be handled by an
authorized service dealer (see Figure 3.7).
Figure 3.7 — Inverter Warning Label
3.10 CLEANING THE GENERATOR
Keep your generator set as clean and dry as possible.
Dirt and moisture that are permitted to accumulate
on electrical windings have an adverse affect on the
insulation resistance of those windings.
Moisture that is allowed to remain in contact with
windings will be retained in voids and cracks of the
windings. Dirt makes the problem worse, since it
tends to hold the moisture into contact with the wind-
ings. Salt, as from sea air, worsens the problem since
it tends to absorb moisture from the air. The combi-
nation of salt and moisture makes a good electrical
conductor.
Do NOT use a forceful spray of water to clean
the generator. Water will enter the generator
interior and cause problems, and may also
contaminate the generator fuel system.
3.11 BATTERY
All lead-acid storage batteries will discharge when
not in use. Inspect the generator battery as follows:
3.11.1 ONCE WEEKLY
Inspect battery posts and cables for tightness, corro-
sion. Clean and/or tighten as necessary.
Also check battery fluid level, and, if necessary, fill
with DISTILLED WATER ONLY. DO NOT USE TAP
WATER IN BATTERY.
3.11.2 EVERY SIX MONTHS
Have the battery state of charge and condition
checked by an automotive service facility. This should
be done with an automotive type battery hydrometer.
Storage batteries give off explosive hydrogen
gas. This can form an explosive mixture
around the battery for several hours after
charging. The slightest spark can ignite the
gas and cause an explosion. Such an explo-
sion can shatter the battery and cause blind-
ness or other injury. Any area that houses a
storage battery must be properly ventilated.
Do not allow smoking, open flame, sparks or
any spark producing tools or equipment near
the battery.
Battery electrolyte fluid is an extremely caus-
tic sulfuric acid solution that can cause severe
burns. Do not permit fluid to contact eyes,
skin, clothing, painted surfaces, etc. Wear
protective goggles, protective clothing and
gloves when handling a battery. If you spill
the fluid, flush the affected area immediately
with clear water.
Do not use any jumper cables or booster bat-
tery to crank and start the generator engine.
If any battery has discharged, remove it from
the vehicle for recharging.
3.12 SERVICE AND ADJUSTMENTS
3.12.1 ENGINE SPEED
Engine speed is completely computer-controlled.
There is no adjustment for speed on the unit. The
computer adjusts the engine speed using an electron-
ic governor throttle control. The computer monitors
the demand for power and adjusts the engine speed
accordingly. This allows the engine to produce only
the power required, resulting in fuel economy as well
as lowering the overall noise emitted.
NOTE:
The computer will disable the electrical load capa-
bilities of the generator and enter a fault condition
if you accelerate the throttle
manually or any
other way.
3.13 ADJUSTING THE CARBURETOR
The carburetor of your generator is preset at the fac-
tory. The carburetor should not be tampered with, as
this will void the emission control system warranty. If
your generator is used at altitudes in excess of 5,000
feet, consult your Generac Authorized Service Facility
regarding high altitude jetting changes.
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