42
BACKUP COOLING KIT (OPTION)
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.
This freezer can be provided with a backup cooling kit (CVK-UB2/CVK-UB2I) which is available as an
optional component. For the installation, refer to the installation sheet enclosed with the backup cooling
kit. Contact our sales representative or agent for the installation of a backup cooling kit.
1. Switch of backup cooling kit (BACKUP)
When turning on the backup cooling kit, the lamp is
brightened. This means that the backup cooling kit is
ready. To stop the operation of the backup cooling kit,
turn off this switch.
2. Test switch (TEST)
This switch is for checking the operation of backup
cooling kit. Pressing this switch is resulted in the
release of liquid carbon dioxide without backup cooling
kit operation.
3. Temperature setting knob (TEMP. SET)
With this knob, set the temperature at which the backup
cooling kit is operated. The effective set temperature
range is between -50
o
C and -70
o
C.
Note:
Do not set the temperature setting knob to the
temperature lower than -70
o
C to avoid the early
consumption of CO
2
gas resulting from continuous
injection.
4. Back-up standby lamp (BACK UP STANDBY)
This lamp is on/off conjunction with the switch of backup cooling kit .
SMALL INNER DOOR (OPTION)
This unit has an optional component small inner door (MDF-7ID) which is adapted to each shelf.
Replace the standard inner doors with the MDF-7ID to utilize the separate doors for each shelf.
For installation of MDF-7ID, refer to the installation manual attached to MDF-7ID.
Note:
When the small inner door (MDF-7ID) is installed, the cooling performance of this unit is lower than that
shown on page 49 “PERFORMANCE”.
Cooling performance : -82
o
C at the center of the chamber (ambient temperature; 30
o
C, no load)
An optional inventory rack IR-224U cannot be used when the small inner door is installed.
1
2
3
BACK UP
STANDBY
4
Door switch box
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