Crystal CRIF600, Инструкции по установке, эксплуатации и техническому обслуживанию

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4
The thermostat is been set by our company to ensure average temperature
from -24
ο
C (lower set point, stops the compressor’s operation) to -18
ο
C (higher set point, starts the compressor’s
operation). You can change the lower set point easily as follows:
By pressing the i-set button, press the same time the left arrow (temperature reduction) or the right arrow (temperature
increase). That way, you can change the lower set point according to your needs (Fig. 5).
For example, if you set a new set point at -23
ο
C, then the new temperature average will be from -23 to -17
ο
C.
The electrical thermostat-thermometer has been set by our company so that the lower set point to have an average
between -30 to -15
ο
C. The average between the lower and the higher set point is fixed and equal to 6
ο
C.
In case of freezer malfunction, some alarms warnings are given on the display through explicit indications and
intermittent buzzer sounding. During an alarm, by pressing any button, the buzzer is muted.
If the problem remains (is not repaired), the buzzer sounding will be repeated for 20 second per hour while the
digital indication will be always shown on the display.
Digital Indications of ALARMS
INDICATION EXPLANATION POSSIBLE CAUSE POSSIBLE SOLUTION
1.HI ….. High cabinet temperature Ice forming upon evaporator/
ambient temperature too
high/ bad air flow due to
products positions. Defrost/improve ambient
climate conditions/
products re-arrangement,
see §7
2.LO ….. Low cabinet temperature Thermostat damage Replacement
3.DO ….. Door left open … Close it at once
4.HP ….. High condenser pressure Dust upon condenser Condenser Cleaning (See
§11)
5.E1 ….. False indication of cabinet sensor …. Replacement
6.E2 ….. False indication of evaporator sensor … Replacement
7.E3 ….. False indication of condenser sensor … Replacement
In any case, you should be advised by the manufacturer and assign such works only to specialized technicians.
Additionally:
¾ Whenever the freezer’s door is open, the evaporator fan located at the top of the cabinet will stop.
¾
If the freezer’s door left open for 3 minutes, the compressor will stop.
¾ If the freezer’s door left open for 5 minutes, then the corresponding indication ALARM will appear on the
thermostat.
Defrost procedure
The thermostat has been set by our company to perform 3 defrost circles per 24 hours using an electrical resistor for
15 minutes each time. During defrost operation, the evaporator’s fan stops.
The defrost procedure is programmed to last 15 minutes maximum in case of having evaporator’s temperature less
than 30
ο
C. If during this procedure, the evaporator’s temperature overpasses the limit of 30
ο
C, the defrost procedure will
end immediately (will not last for 15 minutes).
After the defrost procedure, two cycles will follow:
1. The freezer remains for 4 minutes in order the water drainage to be completed through the plastic tube
from the evaporator to the engine room.
2. Once the drainage is completed, the freezer remains for another 4 minutes so that the temperature of -10
ο
C
to be achieved inside the evaporator. Then, the evaporator fan will start its operation. If during this last 4
minutes procedure, the limit of -10
ο
C inside the evaporator is not achieved, the evaporator fan will start
anyway. In case of achieving the limit of -10
ο
C before the end of the 4 minutes, the evaporator fan will
also start.