Operation Limits - mycom i125S Instruction Manual

2.3.2

Operation Limits

Item
Speed
Discharge pressure
Suction pressure
Differential pressure for
lubrication (Po - Ps)
*Note3
Discharge gas temperature
Superheating degree of
suction gas
Oil supply temperature
Supply oil viscosity
(kinematic viscosity)
Vibration standard value at
shipment
Noise standard value at
shipment

Unless otherwise noted, the pressure unit MPa represents the gauge pressure in this manual.
: For operations outside the normal operation ranges, consult our compressor manufacturing
*Note 1
division.
When performing a speed-increasing operation by inverter at 70 °C or above oil temperature,
*Note 2:
contact our compressor manufacturing division to confirm the temperature on the mechanical
seal sliding surface.
Po = Oil supply pressure, Ps = Suction pressure
*Note 3:
This value excludes the start-up of the compressor. Refer to
*Note 4:
 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.
Screw Compressor i-series
Table 2-2 Operation Limits of i-series Compressor
Normal operation range
-1
min
MPa
MPa
MPa
Condensing temperature +
°C
°C
°C
2
mm /s
μm
(Half amplitude) 20
125S, L, 160S, M: 84
dB (A)
Chapter 2 Compressor Specifications and Configuration
*Note 1
2950 @50 Hz
3550 @60 Hz
1.0 to 1.9
0.02 to 0.35
≥ 0.5
15 to 90
5 to 20
30 to 60
13 to 40
160L: 85
Note 2
2-3
2203M4-JE-MY-iS2-N_2017.04.
Permissible limit
125S, 160S: Max. 4500
125L, 160M, 160L : Max. 3550
Max. 1.9
Max. 0.6
Min. -0.05
Min. 0.5
*Note 4
Max. 90
—
Max. 80 BBSE
Min. 30
Min. 13
Max. 300 (At start-up time)
—
—
in the next section.
2.3 Compressor Specifications
*Note 2
*Note 2