2200M4-JE-HO-iS2-N_2014.04.
Chapter 2 Compressor Specifications and Configuration
Screw Compressor
i-series
2.1 Features of i-Series Compressor
2-1
Chapter 2 Compressor Specifications and Configuration
2.1 Features
of
i-Series Compressor
i-series compressor enables designers to design highly reliable and most compact
refrigerating unit. It has a lot of features.
Centering is made unnecessary by mounting the motor using a flange.
By mounting the motor using a flange eliminates the need of the troublesome motor centering before
starting the equipment.
Suction strainer and check valve built-in compressor
This compressor has built-in suction strainer and check valve which enable easy maintenance.
No oil pump required in differential pressure oil supply system
This compressor employs roller bearings which let lubrication oil reserved in part even when the
machine is stopped. Accordingly, no lubrication failure will occur even with differential pressure oil
supply system which has no oil pump installed.
3-step (100%, 75%, 50%) unloader
As it has a 3-step (100%, 75%, 50%) unloader built-in, flow adjustment can be done easily.
Inverter-controlled speed control is available.
High efficiency, and low vibration and noise
Use of
original screw rotor profile attains high efficiency, and low vibration and noise.
2.2
Model Designation of the Compressor
This manual describes i125*-* and i160*-* models.
The meaning of the type designation, which is engraved on the MODEL column of the compressor
nameplate, is as follows.
i 1 2 5 * - *
Specifications of Vi (volume ratio) of the discharge port, which is
L
(Vi=2.63),
M
(Vi=3.65)
or
H
(Vi=5.80)
Specifications of rotor length, which is
S
or
L
(i125) and
S
,
M
or
L
(i160)
Rotor diameter, which is 125 or 160
Indicates i-Series.
