Sullair LS-25S-257KW, Operator'S Manual And Parts List

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Section 4
INSTALLATION
19
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. 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 Opera-
tor’s Manual. No piping loads shall be transmitted
to the compressor or the cooling package at the ex-
ternal 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 3 feet/0.9m. To
prevent excessive ambient temperature rise, it is
imperative to provide adequate ventilation.
Ta bl e 1 --- Ventil ation R equir ements indic ates the
ventilation requirements necessary to keep the
compressor running at a normal operating tem-
perature. The fan air requirement is the volume of
air which must flow through the compressor for
proper ventilation. The specified heat rejection re-
quirement is the amount of heat that is radiated by
the compressor. This heat must be removed to as-
sure a normal operating temperature. With air---
cooled compressors 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 temperature
less than 32
_
F(0
_
C).
4.3 SERVICE AIR PIPING
Service air piping should be installed as shown in
F i g u r e 4 --- 1 . A s h u t --- o f f v a l v e s h o u l d b e i n s t a l l e d t o
isolate a compressor from the service line if re-
quired. Also notice that the service line should be
equipped with water legs and condensate drains
throughout the system.
WARNING
!
“The Plastic Pipe Institute recommends against the
use of thermoplastic pipe to transport compressed
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. Cer-
tain other plastic materials may also be affected.
(
I
) Plastic Pipe Institute, Recommendation B,
Adopted January 19, 1972.
4.4 FLUID PIPING (AIR---COOLED ONLY)
To allow depressurization of the cooling package
and connecting piping between the compressor
and the cooling package upon shutdown of the
compressor, a 1/2 in./13mm depressurization line
must be installed between the top of the fluid cooler
and the sump tank connection, which is located on
the fluid supply and return line connection bracket.
This line must be maintained at a higher level than
the supply and return piping for the fluid cooler.
The supply and return piping for the fluid cooler
must be adequately sized to prevent excessive
pressure drop. The total pressure drop in the sup-
ply and return piping and associated fittings and
valves shall not exceed 10 psig (0.7 bar). If the pres-
sure drop is excessive, a pump may be installed.
Consult the Sullair Service Department for recom-
mendations.
It is recommended that shutoff valves be installed
in the supply and return piping to facilitate com-
pressor components maintenance.
Because of the variability in installations, the fluid
necessary to fill the supply and return piping for the
fluid cooler is not part of the standard scope of sup-
ply for the compressor. The fluid necessary to fill the
piping may be ordered from the nearest Sullair rep-
resentative or the representative from whom the
compressor was purchased. To assist in determin-
ing the amount of fluid necessary to fill the piping,
Consul t Tabl e 2 --- Fl uid/Pipe S ize Ratio .
PIPE SIZE
GALLONS OF FLUID
PER FOOT OF PIPE
2” .1635
2 1/2” .2555
3” .368
4” .6542
6” 1.4719
Table 2-- Fluid/Pipe Size Ratio
60 Hz COMPRESSOR PACKAGE REMOTE AIR--COOLED COOLING PKG
MODEL MOTOR--KW HEAT REJECTION VENT FAN FLOW (I) HEAT REJECTED AIR FLOW
BTU/HR KCAL/HR CFM / M
3
/MIN BTU / KCAL/HR CFM / M
3
/MIN
(H) 257 65,190 16,428 4150/117.5 848,100/213,721 32,500/920
(I) Applicable to compressors with enclosures.
Table 1-- Ventilation Requirements