Equipment Description; Engine Oil Recommendations; Coolant Recommendations - Generac Power Systems QT Series Owner's Manual

EQUIPMENT DESCRIPTION

This equipment is a revolving field, alternating cur-
rent Stationary Emergency Generator. It is powered
by a gaseous fueled engine operating at 1800 rpm for
4-pole direct drive units, 3600 rpm for 2-pole direct
drive units and 2300 - 3000 rpm for quiet drive gear
units. See the Specifications section for exact num-
bers. The unit comes complete with a sound attenu-
ated enclosure, internally mounted muffler, control
console, mainline circuit breaker, battery charger,
and protective alarms as explained in the following
paragraph.
The Stationary Emergency Generator incorporates
the following alternator features:
• Rotor and Stator insulation is Class H rated as
defined by NEMA MG1-32.6, NEMA MG1-1.66.
The generator is self ventilated and drip-proof con-
structed.
• The voltage waveform deviation, total harmonic
content of the AC waveform and telephone influ-
ence factor have been evaluated and are acceptable
according to NEMA MG1-32.

ENGINE OIL RECOMMENDATIONS

The unit has been filled with 15W-40 engine oil at
the factory. Use a high-quality detergent oil classi-
fied "For Service SJ or SH." Detergent oils keep the
engine cleaner and reduce carbon deposits. Use oil
having the following SAE viscosity rating, based on
the ambient temperature range anticipated before the
next oil change:
Temperature
Above 80° F (27° C)
32° to 80° F (0° to 27° C)
Below 32° F (0° C)

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.
For temperatures below 32° F , it is strongly recom-
mended to use the optional Cold Weather Start Kit
(part number listed in the Specification Section).
The oil grade for temperatures below 32° F is 5W-
30 synthetic oil.
Stationary Emergency Generator
Equipment Description
Oil Grade (Recommended)
SAE 30W or 15W-40
SAE 20W-20 or 15W-40
See Note
NOTE:

COOLANT RECOMMENDATIONS

Use a mixture of half low silicate ethylene glycol
base anti-freeze and deionized water. Cooling system
capacity is listed in the specifications. Use only deion-
ized water and only low silicate anti-freeze. If desired,
add a high quality rust inhibitor to the recommended
coolant mixture. When adding coolant, always add
the recommended 50-50 mixture.

Do not use any chromate base rust inhibitor
with ethylene glycol base anti-freeze or chro-
mium hydroxide ("green slime") forms and will
cause overheating. Engines that have been oper-
ated with a chromate base rust inhibitor must
be chemically cleaned before adding ethylene
glycol base anti-freeze. Using any high silicate
anti-freeze boosters or additives will also cause
overheating. The manufacturer also recommends
that any soluble oil inhibitor is NOT used for this
equipment.

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 mouth to siphon coolant from the
radiator, recovery bottle or any container. Wash
hands thoroughly after handling. Never store
used antifreeze in an open container because
animals are attracted to the smell and taste of
antifreeze even though it is poisonous to them.
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DANGER