Eppendorf New Brunswick -86 °C Freezers Innova U360 - Manual (Page 19)

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Innova® U360 -86 °C Freezers — Operating manual
3. Set the ON/OFF circuit breaker and battery switch to the I (ON) position.
The temperature display illuminates immediately.
Abb. 4: U360 switch location
Fig. 4: U360 switch location
6.1.3 Alarm/battery activation
The equipment is delivered with the audible alarm and alarm battery deactivated. The Power Fail
alarm is activated by the battery rocker switch within the lockable panel, which is located at the
bottom left-hand corner. The switch is labelled I (ON) and O (OFF) (see Fig. 4 on p. 19).
 To activate the alarm, place the battery switch in the I position.
 After activating the alarm, test its operation by pressing and holding the TEST button within
the DIAG menu of the display.
The audible alarm should sound.
6.1.4 Remote alarm
The freezer is fitted with a remote alarm socket for testing power-fail and low battery alarms, and
for connection to an external building monitoring system or optional auto-dialer, (see Alarm
monitoring socket on p. 25). The remote alarm facility provides voltage-free contacts rated at 1
amp, 24 volts maximum.
To test the remote alarm:
 Place the freezer’s mains/power switch to off (O) position, or Press and hold the TEST button
within the DIAG menu of the display.
1 Battery switch 2 On/Off circuit breaker switch
1
2
Hint!
The compressors will not operate for approximately one minute after connection of the mains/
power supply, because there is an automatic delay device in the circuit. Temperature and alarm
settings can be adjusted immediately.
Hint!
Failure to turn on the battery switch may lead to a discharged battery, low battery alarm
indication, and/or a disabled alarm system.
Hint!
Pull down time to -86 °C will be dependent on the freezer size and model (see Specifications on
p. 38). The alarm will sound every 30 minutes until the temperature setpoint is reached. Use the
MUTE feature to mute the alarm during this initial pull-down period.
Hint!
In a mains/power failure situation, the remote alarm socket will operature regardless of the state
of the alarm battery or battery switch.
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