Service Air Piping; Pipe Sizing; Use Of Auxiliary Receiver Tank; Isolation Valve(S) - Sullair 3007 Operators Manual & Parts Lists

If installed under a shelter, air-cooled machines must be
positioned in a way that prevents air recirculation (i.e., hot
exhaust being allowed back to the system air inlet).
In installations that include more than one compressor, hot
air exhaust should not be directed toward the fresh air
intake of the second unit or an air dryer.
A standard machine installed outside must not be started
or run if the ambient temperature in and around the
compressor drops or may drop below 35˚F (1.7˚C).
For installation in a below freezing climate, a low ambient
option with heat tracing and a receiver tank heater must
be installed.

4.3 SERVICE AIR PIPING

Review carefully the total air system before installing a new
compressor. Items to consider for the total air system
include liquid carryover, pipe sizing, and the use of an
auxiliary receiver. The installation of a drip leg or multiple
drip legs, installation of a line filter(s) and the installation
of isolation valve or valves. These considerations are
important to ensure a safe and effective system.
NOTE
Discharged air contains a very small
amount of compressor lubricating oil,
and care should be taken to ensure
that this oil would not interfere with
downstream equipment. Downstream
filters and an air dryer can remove any
carryover.

Pipe Sizing

Pipe should be sized at least as large as the discharge
connection of the compressor. Piping and fittings should
all be suitably rated for the discharge pressure.

Use of Auxiliary Receiver Tank

An auxiliary receiver tank should be used in cases where
large demand swings are expected.

Isolation Valve(s)

If isolation of the compressor from the service lines is
required, isolation valves should be installed close to the
discharge of the compressor. They should be installed
with drip legs that drain sloping downward from the base
in order to drain properly. Install a vent to the piping
downstream of the compressor outlet connection.
When two compressors are operated in parallel, provide
an isolation valve and a drain trap for each compressor
before the common receiver.
SULL AIR
® ®
3000-4500 Operator's Manual and Parts List
A built-in aftercooler reduces the discharge air
temperature below the dew point. For most ambient
conditions, considerable water vapor is condensed. To
remove the condensation, each compressor with built-in
aftercooler is supplied with a combination condensate
separator/trap. A drain line should be installed on the
condensate drain.
NOTE
For low-volume systems that do not
require an auxiliary receiver,
compressor response time may need
to be adjusted. Consult the Sullair
Service Department for assistance.

Fluid Containment

Compressors are equipped with a fluid containment pan
to catch any fluid in the event of a leak or spill. The drain
for the pan is located on the air intake end of the machine.
For indoor installations, the drain should be plugged to
contain fluids. For outdoor applications, the drain must be
connected to a separate, customer supplied system to
allow rainwater or any accumulated compressor fluid to
drain out.
CAUTION
The use of plastic bowls on line filters
and other plastic airline components
without metal guards can be
hazardous. Synthetic coolants or the
additives used in mineral oils can alter
their structural integrity and create
hazardous conditions. Metal bowls
should be used on any pressurized
system for safety concerns.
"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 systems. It may affect the bond
at cemented joints. Certain other
plastic materials may also be affected.
(I) Plastic Pipe Institute,
Recommendation B, Adopted
January 19, 1972.
INSTALLATION
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