LCA
RG66000986 – Rev.00
18
CONTROL DEVICE SETTINGS
GENERALITIES
All the control devices are set and tested in the factory before the unit is dispatched. However, after the
unit has been in service for a reasonable period of time you can perform a check on the operating and
safety devices. The settings are shown in Tables II and III.
The control devices may be serviced SOLELY BY QUALIFIED TECHNICIANS:
incorrect settings may cause serious damage to the unit and injury to
persons.
Many of the operating parameters and system settings are configured by means of the microprocessor
control and are protected by passwords.
TABLE II - SETTING OF CONTROL DEVICES
CONTROL DEVICE
SET POINT
DIFFERENTIAL
Service thermostat [C]
°C
12
2
Service thermostat [H]
°C
40
2
TABLE III - SETTING OF SAFETY - CONTROL DEVICES
CONTROL DEVICE
ACTIVATION
DIFFERENTIAL
RESETTING
Antifreeze thermostat
°C
+4
2
Automatic
Safety maximum pressure switch
bars
28
4
Manual
High pressure relief valve
bars
29
-
-
Minimum pressure switch
bars
2
1.5
Automatic
Modulating condensation control device
bars
14
7
Time lapse between two starts of the same
compressor
s 480
-
-
Delay in flow switch alarm
s
20
-
-
Delay in low pressure alarm
s
120
-
-
Pump rotation [optional]
h
24
End-of-defrost pressure
bars
19
-
-
Maximum defrost time
s
360
-
-
Minimum time lapse between two
defrosting operations
s 1800
-
-
