68
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BACK-UP SYSTEM (OPTION)
This freezer can be provided with a back-up system (CVK-UB4) which is available as an optional
component. For the installation, refer to the instruction manual enclosed with the system.
1. Power switch (BACKUP)
When turning on the system, the back-up standby lamp (green) is brightened. This means that the
system is ready. To stop the operation of the system, turn off this switch.
2. Test switch (TEST)
This switch is for checking the operation of back-up system. Pressing this switch is resulted in the
release of liquid carbon dioxide gas without system operation.
3. Temperature setting knob (TEMP. SET)
With this knob, set the temperature at which the system is operated. The effective set temperature
range is between -50
o
C and -70
o
C.
4. Back-up standby lamp (BACK UP STANDBY)
A lamp that is activated in conjunction with the ON/OFF of the power switch of the back-up system.
5. Battery lamp (BATTERY)
This lamp is brightened in orange when the battery capacity is less.
WARNING
As with any equipment that uses CO
2
gas, there is a likelihood of oxygen depletion in the vicinity
of the equipment. It is important that you assess the work site to endure there is suitable and
sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuring a
safe environment must be considered. These may include atmosphere monitoring and warning
devices.
1
CVK-UB4 switch box
BACK UP
STANDBY
4
BATTERY
CVK-UB4 control panel
2
3
5
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