Emerson SZV22 Manuale Utente

An appropriate inlet gas scrubber is REQUIRED to remove liquids from the gas prior to compression. If 
there is potential for liquid slugging, a suitable trap must be installed to prevent liquid from fl ooding and 
damaging the Compressor.

NOTE
Failing to use an appropriate inlet gas scrubber to remove liquids from the gas prior to 
compression can cause fl ooding and damage the Compressor.

Follow these general guidelines for installation:

•  The Compressor Module must be installed and operated in compliance with all applicable codes and 

regulations.

•  The system must be installed on a level surface.

•  Install pipe unions or fl anges to connect the system to the inlet and discharge piping for ease of 

service.

•  Install isolation valves on the inlet and discharge piping.

•  A common ground must be connected between the Compressor Module and the 

Compressor Package chassis. This ground must comply with the National Electric Code (NEC) and 
any other applicable codes.

•  Solid debris also must be removed from the gas prior to compression. When required, use a 5 to 10-

micron inlet fi lter to remove debris from the gas stream. The degree of fi ltration required depends on 
the specifi c application.

Refer to Table 1 for acceptable inlet and discharge pressure levels. 

0.75 psig / 2" water 

column (model specifi c)

Consult factory for operations below 0.0 psig.

10 / 25 psig 

(model specifi c)

Operation at pressures above 25 psig will result in:
•  Excessive oil carryover
•  Loss of oil from the Compressor Module

70 psig

to

190 psig

(depends on model)

When the discharge pressure of the Compressor Module reaches 
the maximum, which ranges from 70 to 190 psig, depending on the 
model (see Compressor Module Nomenclature on page iv):
•  The Compressor Module goes into high discharge pressure 

recycle if equipped. 

•  The Compressor Module’s bypass regulator diverts gas from the 

high-pressure side to the low-pressure side of the module. 

All Compressor Modules must be equipped with pressure-limiting 
or relief devices.

70 psi

A minimum pressure differential of 70 psi between inlet and 
discharge pressure is required for proper operation.