Gardner Denver VS80A Operating And Service Manual page 17

Refer to Engineering Data Sheet 13-9-411, available from an authorized Gardner Denver distributor, for
the advantages of using the heat recovered from rotary compressors. This heat recovery could easily
pay for an adequate shelter for the unit.
AUXILIARY AIR RECEIVER - An auxiliary air receiver is not required if the piping system is large and
provides sufficient storage capacity to prevent rapid cycling. An adequate receiver capacity for the VS
units is ½ gallon for each cfm delivered by the compressor package.
MOISTURE SEPARATOR/TRAP - Water cooled models include an integrated combination moisture
separator and valve at the outlet of the aftercooler core. Air cooled models are provided with loose
combination moisture separator and drain valve - the devices must be piped at the outlet of the
compressor package during final installation.
CONTROL PIPING - Control piping is not necessary since the Gardner Denver compressor package is
factory wired and piped for the control system specified.
INLET LINE – The air filter assembly used in the VS compressor package is not suitable for relocation, as
its housing assembly is an integral part of the enclosure sheet metal components. See page 13 for
LOCATION comments on this section of the manual for duct work recommendations to bring in ventilation
air.
DISCHARGE SERVICE LINE - The discharge service line connection on both water cooled and air
cooled units is located at the upper right hand area of the intake grill side of the enclosure. Gardner
Denver compressor packages are inherently isolated from the service line by their own minimum
pressure/check valves. The installer or end user must ensure that other compressors that are piped into
a common pipe manifold with the Gardner Denver compressor package are each provided with an
isolation check valve. It is recommended that an additional receiver be installed between the rotary screw
and reciprocating compressors sharing a common pipeline. Do not install another check valve in the
unit's discharge line as operational upsets will occur.
Discharge air used for breathing will cause severe injury or death.
Consult filtration specialists for additional filtration and treatment equipment to meet
health and safety standards.
BLOW DOWN VALVE PIPING – The blow down valve is vented between the air filter and inlet valve,
thus avoiding the need of any external pipe work.
WATER PIPING (Water Cooled Heat Exchanger Models Only) - On machines equipped with water
cooled heat exchangers, the water inlet and outlet connections are located on the lower, right-hand area
below the intake grill.
It is mandatory that any water cooled unit be installed in a shelter heated to
temperatures above freezing (40°F., 5°C).
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