360077-1/O
68
Horizon Series™ - Blood Bank Models
15.2
External Monitoring Devices
CAUTION
►
The interface on the remote alarm monitoring system is intended for connection to
the end user’s central alarm system(s) that uses normally-open or normally-closed
dry contacts.
►
If an external power supply exceeding 30 V (RMS) or 60 V (DC) is connected to the
remote alarm monitoring system’s circuit, the remote alarm will not function properly;
may be damaged; or may result in injury to the user.
NOTE
In the event of a power failure, the power failure alarm condition is transmitted through
the remote alarm contacts.
The remote alarm interface is a relay switch with three terminals:
►
Common (COM)
►
Normally Open (NO)
►
Normally Closed (NC)
Terminals are dry contacts and do not supply voltage. Interface circuit is either normally open or normally
closed, depending on terminals used. Requirements for your alarm system determine which alarm wires
must connect to terminals.
►
0.5 A at 30 V (RMS): 1.0 A at 24 V (DC)
15.2.1
Connect to Remote Alarm Interface
1
Disconnect AC power from the refrigerator. Remove one battery from the monitoring system backup
battery holder.
2
On back of refrigerator, locate the remote alarm terminals.
3
Connect remote alarm wires to appropriate terminals, according to requirements for your alarm
system.
4
Use a cable tie to relieve strain on alarm wires (as necessary).
5
Reinstall the battery in the monitoring system backup battery holder. Reconnect the refrigerator to AC
power.
6
Touch
MUTE
to disable the high temperature alarm while refrigerator reaches operating temperature.