2200M4-JE-HO-iS2-N_2014.04.
Chapter 2 Compressor Specifications and Configuration
Screw Compressor i-series
2.3
Compressor Specifications
2-3
2.3.2 Operation
Limits
Table 2-2 Operation Limits of i-Series Compressor
Items
Operation limits
*
Note 1
Permissible limit
Speed
min
-1
2950@50Hz
3550@60Hz
125S, 160S: Max. 4500
*Note 2
125L, 160M, 160L : Max. 3550
Discharge pressure
MPa
1.0 - 1.9
Max. 1.9
Suction pressure
MPa
0.02 - 0.35
Max. 0.6
Min. -0.05
Differential pressure for lubrication
(Po - Ps)
*Note3
MPa
≥
0.5
Min. 0.5
*
Note 4
Discharge gas temperature
°C
Condensing
tempe 15 to 90
Max. 90
Superheating degree of suction gas
°C
5 - 20
-
Oil supply temperature
°C
30 - 60
Max. 80 BBSE
*
Note 2
Min. 30
Supply oil viscosity
(kinematic viscosity)
mm
2
/s
13 - 40
Min. 13
Max. 300 (At start-up time)
Vibration standard value at shipment
μ
m
(Half amplitude) 20
-
Noise standard value at shipment
dB (A)
125S, L, 160S, M: 84
160L: 85
-
Unless otherwise noted, the pressure unit MPa represents the gauge pressure in this manual.
*Note 1
:
For operations outside the operation limits, consult our compressor manufacturing division.
*Note 2:
When performing a speed-increasing operation by inverter at 70
°
C or above oil temperature,
contact our compressor manufacturing division to confirm the temperature on the mechanical seal
sliding face.
*Note 3:
Po = Oil supply pressure, Ps = Suction pressure
*Note 4:
This value excludes the start-up of the compressor. Refer to
Note 2
in the next section.
Repeated startup and stop in a short period is harmful not for the startup devices
and electric machinery but also for the compressor itself. For information on the
start/stop limitations, refer to each instruction manual.
Wait at least 15 minutes after stopping the compressor before restarting it.
