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About Alarms
Installation of an Alarm System
This refrigeration unit has a variety of protection devices for securing safety.
When a ground fault interrupter or other protection device is activated without the alarm system and temperature
management system, the cooling operation is stopped for many hours thereby damaging the food items.
To enable prompt actions at such time, an alarm system and temperature management system should be considered at
the time of plan development.
External Alarms
This refrigeration unit is capable of delivering alarm output during unit anomaly (no voltage contact: contact capacity
200 V AC 3A).
During unit anomaly, the alarm output between the control terminals 9 and 10 is turned ON (contact point continuity).
Connection of an external alarm circuit (local wiring) is recommended. The power source of external alarm should be
furnished separately from the refrigeration unit power.
Detail of anomaly alarm content is shown on the following page.
9
Buzzer stop switch
10
Buzzer
BZ
Power source for external alarm
(200V or 100V AC)
37
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