Reciprocating Compressor M Series
3-5
Illumination
Prepare illumination devices which allow easy operation, cleaning, maintenance, and inspection.
Ventilation
If natural ventilation is insufficient, install ventilation fans according to the regulations.
Cooling Water
Referring to chapter 7, secure cooling water necessary for your system.
Piping
Table 3-1 Connected piping list
4M
8M
Suction gas With suction shut-off valve 4 inch 5 inch
Without suction shut-off
valve
ANSI #300 4 inch ANSI #300 5 inch
Discharge gas With suction shut-off valve 4 inch 5 inch
Without suction shut-off
valve
ANSI #300 4 inch ANSI #300 5 inch
High pressure gauge connection port ij
Low pressure gauge connection port ij
Oil pressure gauge connection port ij
Cooling water inlet 20A (Rc3/4)
Cooling water outlet 20A (Rc3/4)
Oil separator return inlet Rc1/2
Safety valve connection port Rc3/4
Rc1¼
3.2.5 Installation
3.2.5.1 Installation
Check that mounting surfaces are horizontal. If not, the compressor may become damaged by tightening bolts,
and fail to operate normally.
3.2.5.2 Position of the Oil Returning Point in the Oil Separator / Procedure of
Oil Returning
Use the float valve.
Do not return oil from the receiver/or chiller, only from discharge oil separator.
3.2.5.3 Protection Switch
To protect the compressor and prevent accidents, attach the protection equipment below.
For details, refer to "1.4.5 Automatic Control and Protection Equipment of Refrigerating Machine".
z Oil pressure failure protection equipment (OP)
z High pressure protection equipment (HP)
z Low pressure control equipment (LP)
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