OPERATING INSTRUCTIONS
GRASSO SYSTEM CONTROL
FOR TWO STAGE CHILLER/ PACKAGES WITH SCREW
COMPRESSORS
12
_805011_om_gsc_sp2_gbr_1_.doc
1.2.3.1 Key assignment
[Chapter 1.2.1. in user manual]
Key
Function
Go to the menu item described
+
Back to previous display
Move to next display
+
Switch on
the compressor unit, start enabled
Start HP-compressor
(Press key for 5 sec. in operation mode "Manual")
Increase capacity of HP-compressor
(in case of manual capacity control only)
Start LP-compressor
(Press key for 5 sec. in operation mode "Manual")
Increase capacity of LP-compressor
(in case of manual capacity control only)
without function
+
Call up
display of actual values
Call up
alarm signals
Lamp test
Switch off the compressor unit, start disabled
Stop HP-compressor
(Press key for 5 sec. in operation mode "Manual")
Reduce capacity of HP-compressor
(in case of manual capacity control only)
Stop LP-compressor
(Press key for 5 sec. in operation mode "Manual")
Reduce capacity of LP-compressor
(in case of manual capacity control only)
without function
+
Call up
controls
–
settings
Call up
operating mode
setting
