Mounting Of Compressor; Ventilation And Cooling; Service Air Piping; Coupling Alignment Check - Sullair LS20T Operator's Manual And Parts List

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. It is recom-
mended that the frame be grouted to the founda-
tion. The compressor unit and driver must be
aligned after installation as specified in this
Operator's Manual. No piping loads shall be trans-
mitted to the compressor or the cooling package at
the external connections.

4.2 VENTILATION AND COOLING

For air-cooled compressors, select a location to
permit sufficient unobstructed air flow in and out to
the compressor to keep the operating temperature
stable. The minimum distance that the compressor
should be from surrounding walls is 4 feet/1.22m.
To prevent excessive ambient temperature 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 following flows:
MODEL-HP/KW
LS20T-250- 250HP/186KW
LS20T-300- 300HP/224KW
LS20T-350- 350HP/261KW
Water flow requirements are based on 80°F to 85°F
(27°C to 29°C) water inlet temperature.
Recommended water pressure range is 40 to 75
psig (2.8 to 5.2 bar). Water flow rates will vary with
operating conditions. For rates based on criteria
other than that listed, consult your local Sullair
representative.
Table 4-1 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
Table 4-1 Ventilation Requirements
WATER COOLED OR REMOTE COOLED
COMPRESSOR PACKAGE
MOTOR
MODEL HP/KW
LS20T-250 250/186
LS20T-300 300/224
LS20T-350 350/261
(I) Applicable to air-cooled models only.
(II) Applicable to compressors with enclosure.
WATER FLOW (GPM)
40
48
65
indicates the
HEAT VENT FAN
REJECTION FLOW (II)
BTU/HR CFM
63,600 2,800
84,000 2,800
99,000 2,800
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 excessive pressure drop is not
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 without adequate
freeze protection where it will be exposed to tem-
perature less than 32ºF(0ºC).

4.3 SERVICE AIR PIPING

Service air piping should be installed as shown in
Figure 4-1, which shows a typical arrangement. A
shut-off valve should be installed to isolate a com-
pressor 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)
LLL-4-46 fluid should not be used with PVC piping
systems. 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

In preparation for the factory test, the coupling sup-
plied with your compressor is properly aligned for
operation. The motor is flange-mounted to the com-
pressor unit adapter. Therefore, it is not necessary
to check this alignment, unless high vibration is
noticed.

4.5 FLUID LEVEL CHECK

Your air compressor is also supplied with the prop-
er 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 coolant level MAX
should fill minimum 1/2 of the bottom sight glass
when the compressor is running, or 1/2 top sight
glass when compressor is off.

4.6 ELECTRICAL PREPARATION

Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should be
done by a qualified electrician in compliance with
Section 4
INSTALLATION
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