Follett REFNAT5-SD Installationshandbuch - Seite 11
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Alarms And Safety Functions
This unit has alarm and safety functions, and also a self-diagnostic function.
Alarms and safety functions
Kind of Alarm
or Safety
High temperature
If the chamber temperature
alarm
exceeds the set temperature
more than 3 C.
Low temperature
If the chamber temperature
alarm
is lower 3 C than the set
temperature.
Power failure
In the event of a power
alarm
failure or disconnection of
power supply plug from the
outlet.
Door alarm
When door remains open for
more than 2 minutes.
Auto return
If a key operation is not
performed for about 90
seconds in each setting
mode.
Key lock
When the key lock is ON.
Thermal sensor
If the thermal sensor goes
abnormality
open (E10) or short circuit
(E1S).
Defrost sensor
If the defrost sensor goes
abnormality
open (E20) or short circuit
(E2S).
Situation
Alarm lamp is lit.
Alarm lamp is lit.
Display shuts off.
Alarm lamp lights
after two minute
delay.
Chamber
temperature is
displayed.
Alternate LOC and
actual temperature.
Either E10 or E1S is
displayed.
Either E20 or E2S is
displayed.
Indication
Intermittent tone after
a delay of 15 minutes.
Intermittent tone after
a delay of 15 minutes.
Intermittent tone after
a delay of 2 minutes.
REFNAT5-SD, REFNAT5-GD
Buzzer
Safety
Operation
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Setting mode is
canceled.
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Key input is
disabled.
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If defrost is taking
place, defrost will
stop. If not, unit
will not go into
defrost.
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