NEW BRUNSWICK SCIENTIFIC Innova C585, Руководство по эксплуатации

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29
New Brunswick Scientific User’s Guide
The audible alarm should be checked periodically to verify its function:
1. Press the
DIAG
menu key to enter the diagnostics system.
2. Press and hold the
TEST
menu key for at least 5 seconds.
3. The audible alarm should sound repeatedly.
4. Press the
EXIT
menu key to return to the main screen.
4.6 Alarm Monitoring Socket
The freezers are provided with an alarm monitoring socket at the rear of the freezer and
a matching plug for external monitoring purposes. The plug can be connected either to
a central monitoring system or to a remote alarm. The configuration of the socket is
shown in Figures 6a & 6b.
Within the freezer, the socket is connected to voltage-free contacts rated at 24 volts, 1
amp. In normal operation, pin 1 (
see Figures 6a & 6b ) is connected to pin 2, and in
the alarm condition, pin 1 is connected to pin 3.
The alarm socket should be checked periodically to verify its function.
1. Press the
DIAG
menu key to enter the diagnostics system.
2. Press and hold the
TEST
menu key for at least 5 seconds.
3. The alarm socket will switch to its alarm mode.
4. This can be verified by connecting an appropriately rated continuity testing
device across the contacts as described in the alarm socket diagrams on the next
page.
5. Press the
EXIT
menu key to return the main screen.
CAUTION!
Hazardous voltages must not be connected to the remote alarm socket.
Maximum rating is 24 volts, 1 amp.