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12.4 Automatic Defrost
The defrosting process on all -30°C freezers initiates automatically in response to a built-in timer. The defrost interval timer
adapts to user conditions and will either be approximately every 6 hours or 15 hours. During this time, there may be a slight
increase in display temperature.
If a door or port has been open for an extended duration allowing room air to flow into the freezer, frost may build up inside
of the freezer and negatively affect the performance of the freezer. The unit defrost may not be able to overcome this and
the unit must be manually defrosted by turning the freezer off.
12.5 Gasket Maintenance
Periodically check the gaskets around the door for punctures or tears. Leaks are indicated by condensation or frost which
forms at the point of gasket failure. Make sure that the cabinet is level (refer to
Section 7.1.1
for leveling information).
Keep the door gaskets clean and frost free by wiping gently with a soft cloth.
To check the door seal, complete the following steps:
1. Open the door.
2. Insert a strip of paper (a couple of inches wide) between the door gasket and the cabinet flange and close the door.
3. Slowly pull the paper strip from the outside. You should feel some resistance.
4. Repeat this test at 4-inch intervals. around the door. If the door does not seal properly, replace the gasket.
12.6 Alarm Battery Maintenance
Have a certified technician replace the alarm battery every twelve months at most or when the alarm is active.
The part number for a replacement battery is 322533H01.
12.6 Preparation for storage
If the unit is going to be stored in an off condition, allow the unit to warm up and dry out with the door open before moving
into storage.
