fig.34: Control valve
Control valve adjusted:
–
Start-up
–
when operating conditions change
fig.35: Shuttable check valve
with integrated control function
Shuttable check valve with integrated control function open dur-
ing normal operation
fig.36: Solenoid valve
Controlled by the controller (e.g. GEA Omni)
fig.37: Change-over valve
Change-over valve (3-way valve), opened from below in arrow
direction
fig.38: Oil pressure control valve
Operating position: shut
Δp x,x ± x bar control pressure to be set vis-à-vis reference pres-
sure (see P+I diagram)
Caution!
An oil pressure being set too high or too low may result in serious compressor damage or
even the total breakdown of the compressor after just a short period of operation!
Start-up Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
58 GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015