Torque Specifications; Engine Oil Recommendations; Coolant Recommendations; Before Installation - Generac Power Systems 004742-0 Owner's Manual

1.13 TORQUE SPECIFICATIONS

Cylinder Head ............................................15 (+ 90° + 90°) ft.lb.
Intake Manifold ................................................................13 ft.lb.
Exhaust Manifold..............................................................13 ft.lb.

1.14 ENGINE OIL RECOMMENDATIONS

The unit has been filled with 15W-40 engine oil at the
factory. Use a high-quality detergent oil classified "For
Service CC, SD, SE, SF ." 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 (-1° 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.

1.15 COOLANT RECOMMENDATIONS

Use a mixture of half low silicate ethylene glycol base
anti-freeze and half soft water. Cooling system capac-
ity is about 8 U.S. quarts (7.6 liters). Use only soft
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 chromi-
umhydroxide ("green slime") forms and will
cause overheating. Engines that have been
operated with a chromate base rust inhibitor
must be chemically cleaned before adding ethyl-
ene glycol base anti-freeze. Using any high sili-
cate anti-freeze boosters or additives will also
cause overheating. DO NOT use any soluble oil
inhibitor for this equipment.
8
Section 2 — Installation
Liquid-cooled 15 kW, 20 kW and 25 kW Generators
Oil Grade (Recommended)
SAE 30W or 15W-40
SAE 20W-20 or 15W-40
SAE 10W or 15W-40

1.16 BEFORE INSTALLATION

Before installing this equipment, check the ratings of
both the generator and the transfer switch. Read
"Emergency Isolation Method" and "Total Circuit
Isolation Method" in the installation manual (Part No.
079699).
The generator's rated wattage/amperage capacity
must be adequate to handle all electrical loads that
the unit will power. Group the critical (essential)
loads together and wire them into a separate "emer-
gency" distribution panel.
This generator can be installed in conjunction with a
standard "GTS" type transfer switch, if desired.
The standard transfer switch has no sensing or con-
trolling circuit boards. Instead, the generator control
console houses a "Printed Circuit Board Assembly",
which controls all phases of operation, including
engine start up and load transfer.
2.1 STANDBY GENERATOR
INSTALLATION
DANGER
Connecting this generator to an electrical system
normally supplied by an electric utility shall be by
means of a transfer switch, so as to isolate the
electric system from the utility distribution sys-
tem when the generator is operating. Failure to
isolate the electric system by these means will
result in damage to the generator and may also
result in injury or death to utility workers due to
backfeed of electrical energy.
If an open bottom is used, the engine-genera-
tor is to be installed over non-combustible
materials and should be located such that com-
bustible materials are not capable of accumu-
lating under the generator set.
Only qualified, competent installation contractors or
electricians thoroughly familiar with applicable
codes, standards and regulations should install this
standby electric power system. The installation must
comply strictly with all codes, standards and regula-
tions pertaining to the installation.
After the system has been installed, do nothing
!
that might render the installation in noncompli-
ance with such codes, standards and regula-
tions.
For more information about the installation of a
standby system, order Engine-Generator Standby
Electric Power Systems Installer's Guide and
Reference Manual (part #046622) from an
Authorized Service Dealer.
NOTE: