Arneg SR2 Manuel D'installation Et De Service page 39

SR2-SR3
English
How does it
Phase
work
1
2
3
Electrical- Intake check - COMPRESSORS -
mechanical The compressors are turned on/off as follows:
adjustment
SR2 = depending on the values indicated in setpoints of pressure switches "3"; "4"
SR3 = depending on the values indicated in setpoints of pressure switches "3"; "4"; "5"
Pressure switch setpoints
pressure
pressure
pressure
pressure
pressure
38
the compressors turn off, the low pressure rises
if the pressure exceeds the setpoint f pressure switch 2 for more than
30 min, the output relays of the controller are disabled.
the electrical-mechanical adjustment system is enabled
Refrigeration systems TN - R404A
compressor stop (dew) start (dew)
switch
n°
2
/
3
I
4
II
5
III
Refrigeration systems TN - R134a
compressor stop (dew) start (dew)
switch
n°
2
/
3
I
4
II
5
III
Refrigeration systems TN - R407F
compressor stop (dew) start (dew)
switch
n°
2
/
3
I
4
II
5
III
Refrigeration systems BT - R404A
compressor stop (dew) start (dew)
switch
n°
2
/
3
I
4
II
5
III
Refrigeration systems BT - R407F
compressor stop (dew) start (dew)
switch
n°
2
/
3
I
4
II
5
III
Description
bar
3 4
0.8 1.5
1.0 1.7
1.2 1.9
bar
1.2 1.9
0 0.7
0.2 0.9
0.4 1.1
bar
2.5 3.5
0 0.7
0.2 0.8
0.3 1.0
bar
0.8 1.5
0.1 0.8
0.2 0.9
0.3 1
bar
0.3 1.0
0 0.7
0.1 0.8
0.2 1
diff. stop start
°C
1 -12 -5
0.7 -33 -25
0.7 -30 -23
0.7 -28 -21
diff. stop start
°C
0.7 -7 0
0.7 -26 -15
0.7 -23 -12
0.7 -19 -9
diff. stop start
°C
1 -11 -4
0.7 -40 -28
0.7 -38 -26
0.7 -36 -24
diff. stop start
°C
0.7 -33 -25
0.7 -44 -33
0.7 -42 -32
0.7 -40 -30
diff. stop start
°C
0.7 -11 -24
0.7 -40 -28
0.7 -38 -26
0.7 -36 -24
05060162 00 02/02/2016