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21
DEFROST CYCLES
㩵
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.
㩵
Forced defrost
When the unit is operating under a forced defrost cycle, the current chamber temperature and dF is
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 terminal of the remote alarm is installed at the back of the unit. 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 status of remote alarm terminal is cancelled by
pressing the alarm buzzer stop key (BUZZER) since the
remote alarm is operated in conjunction with alarm
buzzer.
The remote alarm terminal is in alarm status when the
power supply cord is unplugged because it is regarded as
a power failure. In this case, the alarm status of remote
alarm terminal is not cancelled by pressing the alarm
buzzer stop key (BUZZER).
.
Connecting
terminal
