GEA Grasso - Page 9

OPERATING INSTRUCTIONS
CO
2
/NH
3
CASCADE UNIT
250 - 1000 KW
_551511_om_kas_gbr_1_.doc 9
TABLE OF FIGURES
fig. 1: Vacuum required to remove moisture from refrigerating plants .................................................... 12
fig. 2: Motor direction of rotation............................................................................................................... 15
fig. 3: Stop valve opened ............................................................................................................................. 17
fig. 4: Stop valve closed................................................................................................................................ 17
fig. 5: Check valve......................................................................................................................................... 17
fig. 6: Combined stop/ check valve.............................................................................................................. 17
fig. 7: Control valve ...................................................................................................................................... 17
fig. 8: Combined stop/ check valve with integrated control function........................................................ 17
fig. 9: Solenoid valve .................................................................................................................................... 18
fig. 10: Change-over valve............................................................................................................................ 18
fig. 11: oil pressure regulating valve............................................................................................................ 18
fig. 12: Overflow valve, safety valve ............................................................................................................ 18
fig. 13: Pressure controlled check valve ....................................................................................................... 18
fig. 14: Quick acting valve, spring-held........................................................................................................ 18
fig. 15: Charging valve, draining valve......................................................................................................... 18
fig. 16: Service valve ..................................................................................................................................... 18
fig. 17: Oil temperature limiter .................................................................................................................... 19
fig. 18: Temperatur controlled valve ........................................................................................................... 19
fig. 19: Thermostatic expansion valve.......................................................................................................... 19
fig. 20: Solenoid valve plate with throttle screws ....................................................................................... 20
fig. 21: Exterior view GSC............................................................................................................................. 23
fig. 22: GSC operator terminal ..................................................................................................................... 24
fig. 23: "Status messages" display................................................................................................................. 28
fig. 24: Restart following Alarms ................................................................................................................. 32
fig. 25: Diagram of the main components of the CO
2
/NH
3
cascade, Part 1............................................... 34
fig. 26: Diagram of the main components of the CO
2
/NH
3
cascade, Part 2............................................... 35
fig. 27: Oil fine separation cartridge............................................................................................................ 49