Model 900 Series ______________________________________________________________________Maintenance
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4.7 Replacing the Battery(s)
1. To gain access to the battery, open the lower door by grasping
the bottom left corner. The battery is rectangular in shape,
located on the front left corner of the compressor compart-
ment and is secured in place by a mounting bracket.
2. Directly above the battery(s) is the battery power switch.
Turn the battery power switch to the off position.
3. Disconnect the battery connections.
4. Remove the old battery and install the new battery.
6. Reconnect the battery (red to positive and black to negative).
7. Turn on the battery power switch.
8. Close lower panel door.
4.8 Preparing the Unit for Storage
Defrost the unit as described in Section 4.4. This will pre-
pare the unit for storage. Turn off the battery power switch. Turn
off the freezer power switch. Disconnect power to the battery(s)
and to the freezer.
If the unit has been in service, turn it off and disconnect the
power cord connector before proceeding with any
maintenance.
The % of charge can vary depending on the age,
usage and condition of the battery. For a consis-
tent and dependable charge, replace the battery
every 2 years. Replacement batteries must be
rechargeable and are available from Thermo.
Refer to the parts list for stock number and
description of the replacement batteries. Dispose of
the used batteries in a safe manner and in accor-
dance with good environmental practices.
Figure 4-8
Summary of Contents for 900 Series
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