Designation: AIR CONDITIONER FOR ELECTRICAL ENCLOSURE
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UMA-CDZ-IP-ACOWM145-00
4 - STARTING AND ADJUSTMENT
After finishing assembly of the conditioner, wait approx. 30 min. before starting it (the oil
must collect in the compressor to ensure lubrication and cooling).
The air conditioner operates automatically, that is to say, after insertion, the evaporator fan
operates continuously making the air inside the cabinet circulate. This way a uniform
distribution of temperature inside the cabinet itself is attained. The built-in thermostat
drives compressor and condenser fan according to set point value.
Compressor turns ON when internal enclosure temperature rises up to set point
value + hysteresis and the minimum interval of two successive switch-on of the
compressor (parameter C2) is elapsed.
Condenser fan turns ON when refrigerant pressure rises up to pressure switch set
Compressor and condenser fan turn OFF when internal enclosure temperature
decreases below set point value.
4.1 DIGITAL THERMOSTAT
Indicator
Symbol
Status
Meaning
Set
set
On
Set parameters
Off
Measuring & controlling
Cooling
On
Cooling starts
Off
Cooling stops.
Flash
Cooling delays.
Parameter list
Menu
Function
Setting range Default
Unit
St
Temperature set-point
C5 / C6
31°C
°C/°F
Po
Admin. password
0 / 99
55
-
C1
Temperature differential
1 / 15°C
4°C
°C/°F
1 / 30°F
C2
The minimum interval of two successive
switch-on of the compressor
1 / 60
3
min
C4
Temperature calibration of cabinet sensor
-10 / +10°C
0°C
°C/°F
-20 / +20°F
C5
Lower set-point. Min possible set-point
-50°C/(C6-1)
20
°C/°F
58°F/(C6-1)
C6
Higher set-point. Max possible set-point
(C5+1)/90°C
45
°C/°F
(C5+1)/194°F
