Electron Thermo 3684, Руководство по эксплуатации и техническому обслуживанию

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b. Low Temperature Setpoint
For example, if the low temperature alarm setpoint
required is 3°C less than the chamber temperature, or you wish
the alarm to go off when the chamber temperature is 3°C under
the temperature setpoint, set the first digit (step 5) to “3”.
Regardless of the low temperature alarm setting, if the
chamber temperature falls below 0°C, the alarm system will
activate to prevent freezing.
2.4 Door Open Light
When the door is opened, the DOOR indicator lights. This
light goes out automatically when the door is closed.
The alarm will activate if the door is open longer than 2
minutes. Press BZ to temporarily silence this alarm or it will
automatically deactivate when the door is closed.
2.5 Audible Alarm Switch
The audible alarm sounds when the chamber temperature
is above the high alarm setpoint for 15 minutes, when the
chamber temperature is below the low alarm setpoint for 15
minutes, or if the door remains open for 2 minutes.
Note: To silence the alarm, press BZ on the control panel.
2.6 Interior Lights Switch
The LIGHTS switch controls power to the lights inside the
chamber. Note: The light should be off during normal refriger-
ator operation and turned on when viewing the inside of the
chamber.
Model 3680 Series __________________________________________________________________Control Panel Procedures
2.7 Digital Temperature Display
TEMPERATURE display shows chamber temperature.
2.8 Remote Alarm Terminal
Disconnect the unit from power before beginning
any installation or service procedure.
Do not turn the refrigerator ON within 5 minutes
of turning it off. The compressor may not operate
properly without this 5 minute interval. This also
protects the compressor from excessive pressure
build-up.
The remote alarm terminal is located in the box on the
back of the cabinet. The normally-open contact capacity is
30VDC, 2A.
Note: The alarm buzzer stop key ( BZ ) silences the remote
alarm as well as the alarm buzzer, except when the power sup-
ply plug has been disconnected from the unit.
1. Remove the cover from the terminal box on the back of
the cabinet.
2. Connect the lead wire of the remote alarm equipment to
the terminal.
3. Reinstall the cover.
Operation Key Display Mode
1 ---- Current chamber
temperature Temperature
Display
2 Press for 5 seconds The first digit on the
temperature display
flashes
3 Set the first digit to “2” Increases the value of
the flashing digit
4 Press the SET key SET The first digit of the
temperature display
flashes
Chooses the next digit
to be changed
5 Set the temperature
difference required for
alarm setpoint
Increases the value of
the flashing digit
Low
Temperature
Alarm Set
6 Press the SET key SET The value is stored in
memory and the display
returns to the current
chamber temperature
TEMPERATURE (°C) TEMPERATURE (°C)
0 0 4
F 0 0
F 0 2
0 0 5
0 0 3
0 0 4
Temperature
Display
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