07
08
0.1ºC
10.0ºC
2.0ºC
EXAMPLE:
If this parameter is set at 3
minutes, the compressor will cut off at the
set temperature, but will not restart for a
minimum of 3 minutes. This time delay is
also effective at 'Power On’
of the system.
This safety feature is used to protect the
compressor from restarting within a short
period due to power fluctuations.
Range
Min
Max
Fact. Set
0 Min
20 Min
3 Min
Use UP/DOWN keys to set desired
value.
0
0
(10.0 C + 2.0 C).
0
EXAMPLE:
If the set point is setat 10.0 C
0
and differential is set as 2.0 C, then when
0
the system reaches 10 C,the compressor
0
will cutout. Since differential is 2.0 C, the
0
compressor will cut in(restart) at 12.0 C
To change
DIFFERENTIAL
parameter,press the set key.
05
Range
Min
Max
Fact. Set
Range
Min
Max
Fact. Set
DIFFERENTIAL
Function: To set temperature differential
for compressor restart.
Sr.No.
Parameter (LCD Message)
Description of parameters and functions.
Parameter setting method.
HIGH TEMP. ALARM
First Press set key once & release
Parameter value will flash. Now UP /
DOWN keys to set desired value.
To change High Temp
parameter,press the set key.
06
Function: To set maximum allowable
high temperature limit and alarm.
Set Point -1
50.0ºC
50.0ºC
EXAMPLE :
If this parameter is set to
0
50.0 C, then once chiller temperature
0
goes above 50.0 C then controller will
show “Ht” and alarm will be ON.
Range
Min
Max
Fact. Set
Range
Min
Max
Fact. Set
Range
Min
Max
Fact. Set
AFT SET TEMP
Use UP/DOWN keys to set desired
value.
EXAMPLE:
If this parameter is set to
5.0ºC controller will trip the compressor
on Antifreeze fault if the AFT sensor
goes below 5.0ºC.
To change AFT SET TEMP.
parameter, press the set key.
09
Function: To set Antifreeze tripping point.
-30.0ºC
Lt-0.1ºC
4.0ºC
Sr.No.
Parameter (LCD Message)
Description of parameters and functions.
Parameter setting method.
function of the controller
Enable = It enables the Antifreeze Trip
Use UP/DOWN keys to set desired
value.
function of the controller
Disable = It disables the Antifreeze Trip
To change AFT PROBE
STATUS parameter, press the
set key.
08
Function : To enable or disable
Antifreeze function.
EXAMPLE:
Setting this parameter at
0
5.0 C will not allow the set point to go
0
below 5.0 C Also, if the temperature
0
reaches or goes below 5.0 C the display
will show Low Temp. Alarm and at this
point the alarm will activate.
AFT Set
Temp.
+0.1ºC
-0.1
Set Temp.
5.0ºC
Disable
Enable
Disable
LOW TEMP. ALARM
07
Function: To set minimum allowable low
temperature limit and alarm.
To change the Low Temp
parameter, press the set key.
First Press set key once & release
Parameter value will flash. Now UP /
DOWN keys to set desired range.
AFT PROBE STATUS
NC-120A
NC-120A
