Section 4
INSTALLATION
17
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
external 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 (.91m) and preferable six (6) feet (1.83m) or
more from the fan air discharge end of the com-
pressor.
For water---cooled compressors, it is necessary to
check the cooling water supply. The proper water
flow should be as follows:
WATER TEMP. WATER FLOW
(_F)
(GPM)
70
25HP
30HP 40HP
3.75 4.50 5.75
80 5.00 6.00 7.50
Ta ble One below indicates the ventila tion require -
ments necessary to keep the compressor running
at a normal operating temperature. The fan air re-
quirement is the volume of air which must flow
through the compressor for proper ventilation. The
specified heat rejection requirement is t he amount
of heat that is radiated by the compressor. This heat
must be removed to assure a normal operating
temperature. It is possible t o 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 w here it will be exposed to
temperature less than 32_F(0_C).
4.3 SERVICE AIR PIPING
Service air piping should be installed with a shut---
off valve installed to isolate the compressor from
the service line if required. The service line should
be equipped with water legs and condensate
drains throughout the system. Both air---cooled
and water---cooled aftercoolers are available as
standard equipment.
4.4 COUPLING ALIGNMENT CHECK
With the compressor unit directly flange---mounted
to its drive, the coupling suppliedwith the compres-
sor is always properly aligned for operation. How-
ever, we recommend that you re---check the cou-
pling gap before start---up or when handling the
unit. A #@32 to !@8” axial clearance should be main-
tained for the coupling gap.
4.5 FLUID LEVEL CHECK
The air compressor is also supplied with the proper
amount of fluid. However, it is necessary to check
the fluid level at installation. The level is checked by
looking at the sight glass located on the sump. If
the sump is properly filled, the fluid level should not
fall below t he center of the sight glass when the
compressor is shutdown.
TABLE ONE -- VENTILATION REQUIREMENTS
A I R --- C O O L E D
MOTORHP 253040
FAN AIR CFM 2000 2000 2600
HEAT REJECTION BTU/HR. 59,400 71,400 91,800
AIR---COOLED W/AFTERCOOLER
MOTORHP 253040
FAN AIR CFM 2000 2000 2600
HEAT REJECTION BTU/HR. 68,400 82,200 106,200
MOTORHP 253040
FAN AIR CFM 720 720 720
HEAT REJECTION BTU/HR. 8400 10,000 13,000
W A T E R --- C O O L E D
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