Emerson SZO56, SZO44, SZV44, SZV32 manual Installation Guidelines, Inlet and Discharge Pressures

Dual-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	Consult the factory for operations below 0.75 psig.
Pressure
Maximum Inlet			Operation at pressures above 25 psig will result in:
		25 psig	• Excessive oil carryover
Pressure
			• 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 model (see Compressor
		70 psig	Module Nomenclature on page iv):
Discharge			• The Compressor Module goes into high discharge pressure recycle if
		to
			equipped.
Pressure		190 psig
			• The Compressor Module’s bypass regulator diverts gas from the high-pressure
Range		(depends
			side to the low-pressure side of the module.
		on model)
			All Compressor Modules must be equipped with pressure-limiting or relief
			devices. A minimum pressure differential of 70 psi between inlet and discharge
			pressure is required for proper operation.

5 2006SSD-75 R4 (10/10)