Mounting Of Compressor; Ventilation And Cooling - Sullair LS-100L Operator's Manual

4.1 MOUNTING OF COMPRESSOR

A foundation or mounting capable of supporting the
weight of the compressor, and rigid enough to
maintain the compressor frame level and the com-
pressor in 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-
TABLE 1- WATER SUPPLY REQUIREMENTS (WATER-COOLED)
WATER TEMP.
ºF/ ºC
70/ 21
80/ 26.6
(I) Water pressure should be between 25 and 75 psig/ 1.7 and 5.2 bar.
TABLE 2- VENTILATION REQUIREMENTS (I)
Cooling Type
Motor HP/KW
Fan Air CFM/ 1922/3265
M 3 /Hr
Ventilating Air/
Heat Rejection
BTU/Hour
KCal/Hour
Cooling Water/
Heat Rejection
BTU/Hour
Kcal/Hour
(I) Values based on: 100% RH, 85ºF/ 29ºC Ambient.
(II) Applies to compressor with canopy only (vent fan).
25HP/ 18KW
3.75/ 14.2
5.00/ 18.9
Air-cooled with Aftercooler
25/18 30/22
1922/3265
72504/ 87000/
18270 21924
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 2- Ventilation Requirements
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 require-
ment is the amount of heat that is radiated by the
compressor. This heat must be removed to assure
a normal operating temperature. With air-cooled
compressors 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).
WATER FLOW (I)
GPM/ LPM
30HP/ 22KW
4.50 /17.0
6.00/ 22.7
40/30 25/18
3122/5304 720/1220
114000/ 8500/
28728 2150
72504/
18270
Section 4
INSTALLATION
indicates the
40HP/ 30KW
5.75/ 21.8
7.50 /28.4
Water-cooled (II)
30/22 30/40
720/1220 720/1220
10000/ 13000/
2550 3300
87000/ 114000/
21924 28728
23