Fig. 34 Control Valve; Fig. 35 Shuttable Check Valve; Fig. 36 Solenoid Valve; Fig. 37 Change-Over Valve - GEA Grasso M-Series Operating Manual

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