18
M1288-0070
U360 Ultra-Low Temperature Freezer
User’s Manual
3.5
Alarm Activation & Alarm Battery Charging
The equipment is delivered with the audible alarm & alarm battery deactivated. The
black battery rocker switch behind the lockable power switch panel activates the alarm
system battery. The switch is labelled
I
(
ON
)
and
O
(
OFF
)
.
To activate the audible alarm and to charge the alarm battery, place the battery switch in
the
I
(
ON
)
position. The alarm system battery will continuously charge when the battery
switch is in the
ON
position.
CAUTION!
Failure to turn on the battery switch may lead to a discharged battery,
low battery alarm indication, and/or a disabled alarm system.
The operation of the audible alarm can be verified at any time by pressing and holding
the
TEST
button within the
DIAG
menu of the display. The audible alarm should
sound.
#
NOTE:
When the equipment is first switched on, it will take up to approximately
six hours to reach a temperature of -86°C, depending upon the size of the
freezer.
3.6
Remote Alarm Socket
The freezer is also fitted with a remote alarm socket
(see Section 4.6 for details)
for
connection to an external alarm monitoring system via the provided plug. The remote
alarm facility provides voltage-free contacts rated at 1 amp, 24 volts maximum. The
socket can be tested by turning off (
O
) the freezer’s main power switch or by pressing
and holding the
TEST
button within the
DIAG
menu of the display.
#
NOTE:
In a power failure situation, the alarm socket will operature regardless of
the state of the alarm battery or battery switch.
