18
REMOTE ALARM TERMINAL
The terminal of the remote alarm is installed at the upper side of the unit. The alarm is outputted from
this terminal.
Contact capacity is 2 A (DC 30 V) - 0.1 mA (DC 1 V).
a) output: normal open
connectors are connected with N.O. side.
b) output: normal close
connectors are connected with N.C. side.
Note:
The alarm is actuated when the power cord is disconnected from the outlet or the power switch is OFF.
ALARMS & SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarm and safety function
Alarm & safety Situation Indication Buzzer Safety operation
High temperature
alarm
When the chamber temp. is
approx. 10
o
C (or 15
o
C) higher
than the set temp.
Alarm lamp blinks.
Intermittent
tone with 12
min. delay
Remote alarm
with 12 min. delay
Power failure
alarm
At power failure
When power cord is
disconnected.
Alarm lamp blinks.
Intermittent
tone
Remote alarm
Filter check
When the condenser filter
is clogged.
Filter check lamp blinks.
Intermittent
tone
-----
Auto-return
When there is no key
pressing in each setting
mode for 90 seconds.
Chamber temp. is
displayed.
-----
Finishing of each
setting mode
Door alarm When the door is open.
Alarm lamp lights.
Blinks with 30 sec. delay
Intermittent
tone with 30
sec. delay
-----
N.C.
COM
N.O.
Remote alarm terminal
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