Fig. 1 Mass flow rate and regulating range
1 m
mass flow rate
2 m
max
maximum mass flow rate at signal 4
3 m
min
minimum mass flow rate at signal 5
4 I
1
20 mA ≙ 50 Hz
5
I
2
4 mA ≙ 20 Hz
6
I
Amperage
Signal [mA] Frequency [Hz] Mass flow rate [g/s]
4 20 31.1
20 50 79.5
Tab. 10 Mass flow rate and regulating range
2.8.1 Mass flow rate m [g/s] at maximum working pressure of 14.0 bar (abs):
p1 [bar] (abs) ESD 442
m
min
m
max
14.0 31.1 79.5
*at 1.05 bar (abs) suction pressure, 298 K inlet temperature
Tab. 11 Mass flow rate
2.9 Cooling oil
➤ In order to protect any possible warranty claims, the cooling oil should only be obtained
from LINDE AG.
HCF 12
Description Synthetic oil
2 Technical Specifications
2.9 Cooling oil
ESD_2C_10357405_10–LIN_00 E
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2
7