JUMO eTRON M 100 Notice De Mise En Service page 69

Parameter Meaning
Defrosting type
EL = electrical/circulating air:
The cooling relay is switched off, and the defrosting relay is energized to defrost the
evaporator by means of heater bars or circulating warm air.
GAS = hot-gas defrosting:
In this case, the cooling relay remains switched on during defrosting. The defrosting
relay is energized, and can be used to operate a bypass valve that passes a warm
cryogen vapor through the heat-exchanger, instead of the "cold" cryogen.
Defrosting
function
Cycle time (duration Cycle)
This time is used cyclically with d.Fu = 0, for the defrosting function.
(e.g. defrosting every 24 hours) or,
with d.Fu = 2, to form the sum of all the active cooling-unit runtimes.
2009-04-10
0: Cyclic repeat of defrosting, after the end of
cycle time .
1: Start of defrosting daily at the time
that was set under
2: To start defrosting, the sum of all the active
cooling-unit runtimes is formed (i.e. the times in which the
cooling relay was energized). As soon as this sum has
reached the value for the selected cycle time
defrosting is started.
3: Defrosting can only be started/stopped manually,
using the key (>3 sec) or via the binary input.
... .
,
5 Parameter level
Value range
from...factory-set...to
EL, GAS
0, 1, 2, 3
1 ...24... 999 hours
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