Eppendorf New Brunswick -86 °C Freezers Premium - Manuale (Pagina 21)

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Premium -86 °C Freezers — Istruzioni per l'uso
Abb. 5: Chest freezers switch location
Fig. 5: Chest freezers switch location
6.1.3 Alarm/battery activation
The equipment is delivered with the battery deactivated. The Power Fail alarm is activated by the
battery rocker switch within the lockable panel, which is located at the bottom right-hand corner.
The switch is labelled I (ON) and O (OFF) (vedi Fig. 4 a pag. 20) and (Fig. 5 a pag. 21).
 To activate the alarm, place the battery switch in the I position.
 After activating the alarm, test its operation by pressing the ALARM TEST/MUTE key on the
display.
The audible alarm should sound.
The ALARM TEST/MUTE key also tests the LED lamps. All of the LEDs should light up together
when the button is pressed.
If the freezer is turned off during the initial pull-down period, the alarm will activate 30 minutes
after switching it back on.
The factory-set temperature is -80°C.
6.1.4 Testing the alarm monitoring socket
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, (vedi Presa per
monitoraggio allarme a pag. 25). To test the alarm monitoring socket.
 Turn off (O) the ON/OFF circuit breaker.
This will test the POWER FAIL and ALARM output at the same time.
The battery must be switched on to test the POWER FAIL. The remote alarm facility provides
voltage-free contacts rated at 1 amp, 24 volts maximum.
1 Battery switch 2 On/Off circuit breaker switch
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Nota!
The compressors will not operate for approximately three minutes 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.
Nota!
Failure to turn on the battery switch may lead to a discharged battery, low battery alarm
indication, and/or a disabled alarm system.
Nota!
Pull down time to -86 °C will be dependent on the freezer size and model (vedi Specifiche a
pag. 34). The alarm will sound every 30 minutes until the temperature setpoint is reached. Use
the ALARM TEST/MUTE key to mute the alarm during this initial pull-down period.
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Uso