Section 4
INSTALLATION
19
4.1 MOUNTING OF COMPRESSOR
A foundation or mounting capable of supporting the
weight of the compressor, and rigid enough to main-
tain the compressor frame level and the compres-
sor alignment is required. The compressor frame
must be leveled and secured with foundation bolts,
and full uniform contact must be maintained
between the frame and foundation. No piping loads
shall be transmitted to the compressor at the exter-
nal connections.
4.2 VENTILATION AND COOLING
For air-cooled compressors, select a location to
permit sufficient unobstructed air flowing in and out
to the compressor to keep the operating tempera-
ture stable. The minimum distance that the com-
pressor should be from surrounding walls is three
(3) feet (1m). To prevent excessive ambient tem-
perature rise, it is imperative to provide adequate
ventilation.
For water-cooled compressors, it is necessary to
check the cooling water supply. The water system
must be capable of supplying the flows shown in
Table I- Water Supply Requirements (Water-
cooled), and must be maintained at all times. These
figures apply to a compressor running at full load
with an aftercooler. For cooler water or a partially
loaded compressor, slightly less water is required.
However, for hotter water the flow requirements are
significantly greater.
TABLE 1-WATER SUPPLY REQUIREMENTS
WATER TEMP. WATER FLOW
ºF (ºC) GPM (LPM)
100HP
70 (21) 14.9 (56.4)
80 (27) 19.9 (75.3)
(I) Water pressure should be between 25 and 75
psig (1.7 and 5.2 bar).
Water flow requirements are based on 80ºF to 85ºF
(27ºC to 29ºC) water inlet temperature.
Recommended water pressure range is 25 to 75
psig (1.7 to 5.2 bar).
Table 2- Ventilation Requirements indicates the
ventilation requirements necessary to keep the
compressor running at a normal operating temper-
ature. The fan air requirement is the volume of air
which must flow through the compressor for proper
ventilation. The specified heat rejection requirement
is the amount of heat that is radiated by the com-
pressor. This heat must be removed to assure a
normal operating temperature. With air-cooled com-
pressors it is possible to use this heat for space
heating, providing no additional pressure drop is
created across the fan. Consult a Sullair office for
assistance in utilizing this heat.
DO NOT install a water-cooled or an air-
cooled/aftercooled compressor where it will be
exposed to temperatures less than 32ºF(0ºC).
Consult factory for machine operation in ambient
temperature less than 32ºF (0ºC).
4.3 SERVICE AIR PIPING
Service air piping should be installed as shown in
Figure 4-1. A shut-off valve should be installed to
isolate the compressor from the service line if
required. Also notice that the service line should be
equipped with water legs and condensate drains
throughout the system.
“The Plastic Pipe Institute recommends against
the use of thermoplastic pipe to transport com-
pressed air or other compressed gases in
exposed above ground locations, e.g. in exposed
plant piping.” (I)
Sullube should not be used with PVC piping sys-
tems. It may affect the bond at cemented joints.
Certain other plastic materials may also be affect-
ed.
(I) Plastic Pipe Institute, Recommendation B,
Adopted January 19, 1972.
4.4 COUPLING ALIGNMENT CHECK
No coupling alignment is required.
4.5 FLUID LEVEL CHECK
The air compressor is supplied with the proper
amount of fluid. However, it is necessary to check
TABLE 2- VENTILATION REQUIREMENTS
Cooling Type Air-Cooled w/Aftercooler Water-Cooled
Motor HP/ KW 100/75 100/75
Fan Air CFM/ M3/min (I) 8,000/227 2,977/84
Heat Rejection BTU/hr/ Kcal/hr 298,080/75,116 18,000/4536
(I) Applies to compressors with canopy only (vent fan).
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