mycom i160M - Page 58

2203M4JE-MY-iS2-N_2017.04.
Chapter 3 Installation
Screw Compressor i-series 3.2 Installation Works
3-3
3.2.4 Preparation for Installation

Installation Space
Secure sufficient working space for easy operation, cleaning, maintenance, and inspection.

Lighting
Provide sufficient lighting to allow easy operation, cleaning, maintenance, and inspection.

Ventilation
If natural ventilation is insufficient, install ventilation fans according to the relevant regulations.
3.2.5 Installation
Check that the surface of the package unit, where the compressor is to be installed, is even and
horizontal. If it is uneven and non-horizontal, tightening the bolts may lead to compressor deformation,
which may prevent normal operation.
3.2.5.1 Piping Connection

Refrigerant Piping
The size of the connection piping, refer to Section 2.3.4 "Outer Dimensions" in this manual.
Observe the following when connecting the refrigerant piping.
 The compressor is one of the few devices installed within the refrigerating/cold storage unit that
have moving components. These moving components are adversely affected by foreign
substances within the system (scale, dust, spatter, etc.). Therefore, when connecting the piping,
do not allow any of such foreign substances to enter inside.
 Some compressors (mainly those for export) are charged with nitrogen gas to prevent rust. Be
sure to release the pressure before starting piping work.
 Be sure not to allow moisture to enter the piping. There is a high probability that it will cause
trouble after the start of operation. Be sure to assemble piping when it is dry.
 Improper piping may cause operating problems such as oil not returning to the compressor or
liquid flow-backs.
 When connecting the piping to the compressor, use piping that is the same size as the
compressor connection port. If the pipe size of the piping is smaller than the compressor
connection port, the flow of lubricating oil or refrigerant will be obstructed leading to problems.
 Do not let the mass of the piping connected to the compressor applied onto flanges or joints.
Be sure to prepare proper supports for piping.

Oil Supply Piping
When constructing the multi-package unit with i-series compressors, in order to prevent backflow
from the compressor, we recommend the installation of a solenoid valve of PARKER or an electric
motor ball valve in the lubricating oil supply system.
Also, make sure to provide a check valve between the compressor and the valve described above.