Mounting
the Generator Set
GENERAL
Most generator set installations must be engineered to
ensure the generator set will function properly under the
expected load conditions. Use these instructions as a
general guide only. Follow the instructions of ^the
con-
sulting engineer when locating or installing any;compo-
nents.
The complete installation must comply with all
local and state building codes, fire ordinances, and
other applicable regulations. Refer to Onan Technical
Bulletin,
T-030, for further installation information.
Requirements to be considered prior to installation:
• Level mounting surface
• Adequate cooling air
• Adequate fresh induction air
• Discharge of circulated air
• Discharge of exhaust gases
• Electrical connections
• Accessibility for operation and servicing
• Noise levels
• Vibration isolation
LOCATION
Generator set location is decided mainly by related sys-
tems such as ventilation, wiring,
fuel,
and exhaust. The
set should be located as near as possible to the main
power fuse box.
Provide a location away from extreme ambient tempera-
tures and protect the generator set from adverse
weather conditions. An optional housing is available for
outside operation.
Use
3/4-inch
diameter, anchored mounting bolts to
secure the generator set skid to the floor to prevent
movement. Secure the skid using a flat washer and
hexagon nut for each bolt (see Figure 2).
HEX NUT
FLAT WASHER
•12
IN.
305 mm)
MOUNTING
BOLT
FIGURE 2. BOLT DIAGRAM
MOUNTING
Generator sets are mounted on a steel skid that provides
proper support. The engine-generator assembly is iso-
lated from the skid frame by rubber mounts that provide
adequate vibration isolation for normal installations. For
critical installations, install vibration isolators between
the skid base and foundations.
Mount the generator set on a substantial and level base
such as a concrete
pad.
For proper spacing of mounting
bolts and set mounting dimensions, see specific genera-
tor set specification sheet.
ACCESS
TO SET
Plan for access to the generator set for servicing and
provide adequate lighting around the unit. For conven-
ience in general servicing such as the radiator, fan belt,
and changing the crankcase oil; the surface of the
mounting base should be at least 6 inches (152 mm)
above the floor.
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