Section 4
SN55, SN55S, SN55V, SN75, SN75S, SN75V User Manual
4: Installation
02250247-571 R04
Subject to EAR, ECCN EAR99 and related export control restrictions.
54
Installation
4.1
Mounting of compressor
A suitable foundation or fabricated support must be
established to support the compressor. It should be rigid
enough to keep the compressor frame level and maintain
alignment of the compressor and motor. Tie-down bolts
of sufficient size must be used to provide uniform contact
between the foundation and the compressor frame.
Materials such as rubber or cork can be used to provide
uniform contact between the foundation and compressor
frame.
Piping loads must be eliminated through the use of flex
connectors or other systems which prevent piping loads
from being transmitted to the compressor.
Special consideration should be made to meet national
and local electrical codes for the required space around
and in front of the electrical panel. Lighting should be pro-
vided for future service requirements.
Accessibility for fork lift trucks, overhead cranes and
maintenance vehicles should be given careful consider-
ation in order to provide any maintenance that may be
required. Adequate space around the unit should be pro-
vided for access to all components of the compressor.
Softer surfaces in walls or ceilings will absorb sound and
minimize ambient noise levels. Harder, reflective sur-
faces will increase ambient noise levels.
Water-cooled compressors must have provisions for
cooling water supply and drainage available.
4.2
Ventilation & cooling
4.2.1
Air-cooled compressors
An area with adequate space must be provided for the
compressor and its components. Air-cooled compressors
require a minimum of 4 feet (1.25 meters) around the
perimeter of the compressor.
The location should be free from standing water and
allow access to clean air that is free from exhaust and
paint fumes, dust, metal filings or caustic chemicals.
Cooling air should be removed from the area in order to
prevent the re-introduction of heated exhaust air back
into the compressor’s cooling system.
Reduced headroom above the compressor will require
that cooling air be either ducted or in some way deflected
away from the compressor. Inadequate ventilation will
result in higher ambient operating temperatures.
If discharge/inlet ductwork is added to the compressor
package, then remove the louvers from the compressor
package.
4.2.2
Water-cooled compressors
Adequate cooling water flow must be supplied to water-
cooled compressors. Water delivery must be verified to
assure constant delivery of the volumes outlined in
Table 4-1: Water flow requirements
. The cleaning of pip-
ing and water coolers is the customer’s responsibility.
Inspect all piping for deposits and clean as necessary.
Refer to
Section 4.2.5: Water quality recommendations
on page 56. The figures shown are for full-load operation
NOTE
Ambient temperatures above 104°F (40°C)
require that the high ambient option is specified
for the compressor.
NOTE
Systems that employ both a conventional recip-
rocating compressor and a screw-type axial
compressor must be isolated from each other by
use of a common receiver tank. Individual air-
lines from each compressor should be piped to
the common receiver tank.
NOTE
Shipping straps are painted red in order to help
identify them for removal. Be sure to remove
them prior to operation of the drive assembly.
