®SULLAIR
®SULLAIR®
3700 Operator’s Manual and Parts List
25
3700 Operator’s Manual and Parts List
Section 4
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 provided for future service 
requirements.
• Accessibility for fork lift trucks, overhead cranes and 
maintenance vehicles should be given careful 
consideration in order to provide any maintenance 
that may be required. Adequate space around the 
unit should be provided for access to all 
components of the compressor.
• Softer surfaces in walls or ceilings will absorb sound 
and minimize ambient noise levels. Harder, 
reflective surfaces will increase ambient noise 
levels. 
• Water-cooled compressors must have provisions 
for cooling water supply and drainage available.
4.2 VENTILATION AND COOLING
AIR-COOLED COMPRESSORS
• An area with adequate space must be provided for 
the compressor and its components. Air-cooled 
compressors require a minimum of 3 feet (1 meter) 
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.
NOTE
Ambient temperatures above 104°F (40°C) 
require that the high ambient option is 
specified for the compressor.
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NOTE
Systems that employ both a conventional 
reciprocating compressor and a screw-
type axial compressor must be isolated 
from each other by use of a common 
receiver tank. Individual airlines from 
each compressor should be piped to the 
common receiver tank.
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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.
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