GB
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Presetting
Description
CS Cooler FS Freezer
Type
Wall-han-
ging
unit
Ceiling-
mounted
unit
Wall-
hanging
unit
Wall-hanging
unit
Wall-hanging unit: in the case of redundancy, all units in the bus
system simultaneously begin defrosting.
Ceiling unit: units begin defrosting separately.
Restart required on selection.
Logging
Intervall
(optional)
1 min to
30 min
15 min 15 min
Time interval for the data logger. In the case of 15 min
recording interval, the ring bu er lasts for min. 2 years. The
data can be read out to an USB stick as well as viewed and
processed in Microsoft® Excel or OpenOffice™. In the graphic
representation in the display, the time course is shown on a
daily basis and can be selected in a targeted fashion within a
speci c day.
Defrosting
Man.
defrosting
Yes / No No No Time limitation for defrosting in a cycle.
Defrosting
Defrost
cycle /
Defrost
plan
Defrost
cycle
Defrost cycle
Selection parameters for the defrost function
Defrost cycle: At a predetermined interval of the defrosting
operation is started.
Defrost plan: By setting the shift points for the defrost de-
frosting can be performed for well-defined periods.
Defrosting must be programmed for a week. For 99 swit-
ching points are available. When changing the defrost to
restart the system is required.
Defrosting
duration
1 min to
60 min
10 min 10 min Time limitation for defrosting in a cycle.
Defrosting
cycle
15 min to
24 h
4 h 2,5 h
Defrosting cycle: the defrosting process starts at a specified
interval.
Example:
Every 2h defrosting cycle for a duration of 30 minutes
=> at 2:00 pm, defrosting is performed for 30 minutes,
at 4:00 pm, defrosting is performed for 30 minutes,
at 6:00 pm, defrosting is performed for 30 minutes.
For limitation on defrosting, the defrosting limitation
temperature is also applied. Thus, defrosting is performed
for a maximum period of 30 minutes or until the defrosting
limitation temperature is reached. It is better to defrost the
units quickly and often than to have a long cycle period and
a long defrosting process.
Defrosting
temperature
0 to +40°C +12°C +12°C
The defrosting limitation temperature is measured in the
evaporator. For switching o , the defrosting duration (time
in min) or the temperature is used. Whichever value is
reached sooner.
If no defrost termination probe is available, only the time
is considered and the process is nished after running the
defrosting sequence.
Switching
point
+3°C to
+40°C
+5°C +5°C
Switchover between hot gas and fan-only defrosting.
The temperature speci es up to which temperature the
defrosting is only performed with the evaporator fan. Under
this temperature, defrosting is performed by the use of hot
gas or electric heating, respectively. Above this temperature,
the ice layer on the evaporator is melted away for cooling of
the room. For that purpose, the evaporator probe must not
be fully frosted. Defrosting using the fan should ideally only
occur for chiller rooms.
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