20
DEFROST CYCLES
There is no need for routine defrosting of the unit as this occurs automatically as follows:
Cycle defrost
When the ambient humidity is high, or a large amount of damp product is being stored inside the chamber,
there is a possibility that cycle defrost may not be enough to remove all of the frost on the evaporator. In
this case, a forced defrost cycle can be initiated.
Forced defrost
When the unit is operating under a forced defrost cycle, the current chamber temperature and dF are
displayed alternately on the digital temperature display. The chamber temperature rises about 10
o
C
during the defrosting.
CAUTION
The unit may collect excessive frost on the evaporator
if it is installed in high temperature and high
humidity location. For example, the unit starts to defrost once a week with 2
o
C setting in the ambient of
35
o
C and 80 %R.H.
The chamber temperature goes up to approximately 10
o
C temporarily during
defrosting.
REMOTE ALARM TERMINAL
The remote alarm terminal is located inside the front cover. The alarm is generated from this terminal.
The contact capacity is DC 30 V, 2 A.
Contact output:
Between COM and N.O.
Between COM and N.C.
At
normal
condition “Open”
“Close”
At
abnormal
condition
“Close”
“Open”
Note:
The alarm is actuated when the power failure or the power supply cord is disconnected from the outlet.
The remote alarm is silenced by pressing the buzzer stop key (BUZZER) as the remote alarm is operated
in conjunction with the buzzer
It is recommended to use cables with a maximum length of 30 meters.
