AKO AKO-21006, User Manual

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GENERAL LOW PRESSURE SWITCH
All the compressors stop automatically when the general low pressure switch is activated. They start to
work normally again when the pressure switch is reset (manually or automatically).
HIGH PRESSURE PRE-ALARM
The parameter PROT_3 defines the maximum condensation pressure/temperature value in normal
operation.
When the condensation pressure/temperature exceeds the value specified by
PROT_3, compressor stages
are shutdown in turn with a time interval defined by the parameter TEMP_12. The deactivation of the
compressor stages ends when condensation pressure/temperature falls below the differential PROT_4.
The installation is blocked when the general high pressure switch is activated 5 times or more in
one hour. There are two options for unblocking it:
- Disconnecting the
DUOControl power supply and reconnecting it.
- Changing the status of the I3 input from AUTOMATIC to MANUAL and back to AUTOMATIC again.
Pcond (bar)
Tcond (ºC)
PROT_3
No. of Compressors
TEMP_12
PROT_4
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