Emerson SZO22, SZV22 manual Installation Guidelines, Inlet and Discharge Pressures

Single-Compressor Module Installation

2.0Installation

2.1Installation Guidelines

2.1.1Required Component—Inlet Gas Scrubber

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 flooding and damaging the Compressor.

NOTE

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

2.1.2General Installation Guidelines

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 flanges 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 filter to remove debris from the gas stream. The degree of filtration required depends on the specific application.

2.2Inlet and Discharge Pressures

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

Table 1	Inlet and discharge pressure limits
Type		Level	Operating Guidelines
Minimum Inlet		0.75 psig / 2" water	Consult factory for operations below 0.0 psig.
Pressure		column (model specific)
Maximum Inlet		10 / 25 psig	Operation at pressures above 25 psig will result in:
			• Excessive oil carryover
Pressure		(model specific)
			• Loss of oil from the Compressor Module
			When the discharge pressure of the Compressor Module reaches
			the maximum, which ranges from 70 to 190 psig, depending on the
Discharge		70 psig	model (see Compressor Module Nomenclature on page iv):
			• The Compressor Module goes into high discharge pressure
		to
Pressure			recycle if equipped.
		190 psig
Range			• The Compressor Module’s bypass regulator diverts gas from the
		(depends on model)
			high-pressure side to the low-pressure side of the module.
			All Compressor Modules must be equipped with pressure-limiting
			or relief devices.
Minimum			A minimum pressure differential of 70 psi between inlet and
Differential		70 psi
			discharge pressure is required for proper operation.
Pressure

5 2008SSD-34 (5/11)