Danfoss Optyma iCO2 Instructions Manual page 37

Instructions
<Example setting value>
Inside compartment
Purpose
temp. range
Fruit,
2~15°C
vegetables
Meat, fishes -2~2°C
Frozen foods -20°C~-18°C
The low pressure setting (OFF value, ON value) and error pressure in the table above become as shown below depending on the evaporation temperature
(set by rotally switch).
Evaporation temperature
(setting value)
-5
~
-19
-20
~
-29
-30
~
-45
Following table shows examples of setting for reference.
SW1
0
Fig. 37
Tens place Ones place
When the evaporation temperature (setting value) is 5 – -19 °C, the low pressure cut value can be adjusted with the dip switches SW4-7, 4-8. (Although
13.3 bar is equivalent to evaporation pressure at -30°C, the compressor can be stopped without lowering to -30 °C by setting as shown in the table below.)
SW4-7 and SW4-8 at the shipment is "SW4-7" = "OFF", "SW4-8" = "ON".
Shows the low pressure setting OFF value converted from evaporation temperature.
Low pressure control setting pressure (LPSP)
LPSP ≥ 18.7 bar
18.7 bar > LPSP ≥ 13.3 bar
13.3 bar > LPSP
SW SW
4-7 4-8
OFF OFF
ON OFF Pressure equivalent to "Evaporation temperature (setting value) -5 °C"
OFF ON Pressure equivalent to "Evaporation temperature (setting value) -10 °C"
ON ON Pressure equivalent to "Evaporation temperature (setting value) -15 °C"
© Danfoss | Climate Solutions | 2023.02 | LCA012A024
Inside compartment
std.setting (Thermo
ON value)
5~10°C
0°C
-18°C
Converted pressure
(setting value) setting OFF value
38.7 bar
~ 19.3 bar
18.7 bar
~
13.8 bar
13.3 bar
~
7.3 bar
SW2
0
Insert tip of flat head
Insert tip of at head
(precision) screwdriver
(precision) screwdriver
in this slot, and adjust
in this slot, and adjust
at a number.
at a number.
Low pressure setting OFF value "X"
29.45 bar > LPSP
13.3 bar
Evaporation Pressure equivalent
temp. to evaporation
(Setting value) temp.
-10°C 25.5 bar
-17°C 20.6 bar
-40°C 9.0 bar
Low pressure
Evaporation temperature
13.3 bar Converted pressure (setting value)
+5.0 bar
Evaporation temperature
9.0 bar Converted pressure (setting value)
+3.0 bar
Evaporation temperature
6.0 bar Converted pressure (setting value)
+2.0 bar
<Examples of other setting>
Evaporation
temp. to set
Low pressure setting OFF value
X bar
9.0 bar
6.0 bar
LPSP ≥ 29.45 bar
Low pressure Low pressure
setting OFF setting ON
value value
13.3 bar 30.5 bar
13.3 bar 25.6 bar
6.0 bar 11.0 bar
Low pressure
setting ON value
SW1
(Tens place)
5°C 7
-5°C 0
-10°C 1
-40°C 4
Dip switch
SW
4-7
13.3 bar
ON OFF
25.47 bar
21.89 bar
18.68 bar
118A5495A - AN405821998738en-000102 | 37
Error
pressure
5.8 bar
5.8 bar
5.8 bar
Error pressure
5.8 bar
SW2
(Ones place)
5
5
0
0
SW
4-8
Up Down
Fig. 38