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Maintenance
12.4 Automatic Defrost
12.5 Gasket
Maintenance
12.6 Alarm Battery
Maintenance
32
TSX Laboratory Refrigerators
The condenser is located in the top rear of the machine compartment. To
clean the condenser, complete the following steps:
1. Disconnect the power.
2. Remove the back cage and filter.
3. Vacuum the condenser and clean up any loose dust.
4. Replace the back cage and filter.
5. Reconnect power.
The defrosting process on all models is primarily accomplished by air circulated
during off-cycle periods. This heat-free process ensures that the temperature is
not affected by the defrost cycle. The default defrost cycle runs once per hour and
terminates once a preset evaporator temperature or timer criteria is reached.
Defrost water is collected in a pan in the rear of the unit and evaporated using
system heat. No maintenance is required.
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 7.2 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.
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.
Thermo Scientific
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