Mounting Of Compressor; Ventilation And Cooling; Service Air Piping; Coupling Alignment Check - Sullair LS-120 series Operators Manual And Parts Lists

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 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-
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 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-
TABLE 1- WATER SUPPLY REQUIREMENTS (WATER-COOLED) (I)
WATER TEMP.
°F (°C)
40HP
70 (21) 5.6
80 (26.6) 8.4
(I) Water pressure should be between 25 and 75 psig (1.7 and 5.2 bar).
indicates the
50HP (37KW) 60HP (45KW)
7.0 (26.5) 9.0 (31.6)
10.5 (35.7) 11.5 (41.6)
cooled/aftercooled compressor where it will be
exposed to temperatures less than 32°F(0°C).

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
the fluid level at installation and subsequently dur-
ing the operation of the compressor. The oil level is
checked when the compressor is in SHUT DOWN
MODE (oil level may not be visible when operat-
ing), and by looking at the sight glass on the sump.
If the sump is properly filled, the fluid should be vis-
ible in the sight glass. To be able to see the oil
level it may be necessary to start the machine
and build the sump pressure up to 10/20 psi and
then shut down. If no oil level is seen in the sight
glass, add oil to the center of the glass. Do not
overfill in any case. When a complete oil change is
performed fill the sump to the maximum allowable
fluid level (up to the fill plug).
4.6 ELECTRICAL PREPARATION-
ELECTRO-MECHANICAL
Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should be
WATER FLOW
GPM (LITERS)
75HP (55KW)
10.5 (39.7)
14.0 (51.6)
Section 4
INSTALLATION
STANDARD
100HP (75KW)
14.0 (52.5)
18.8 (70.9)
23