Cu Ft Models - Thermo Scientific HERAfreeze HFU Series Operating And Maintenance Manual

All Models Except 3 cu ft
(continued)

3 cu ft Models

Thermo Scientific
7. Replace the recorder bezel.
8. Turn the battery power switch to Standby mode ( ).
9. Close lower panel door.
micro
board
Figure 5-1. Battery and Switch location
1. Open the lower panel door by locating the handle on the underside of
this door and pulling.
2. Locate the battery power switch (Figure 5-2). Turn the battery power
switch to the Off position (O).
3. Remove the two nuts securing the battery bracket. See Figure 5-2.
5. Remove the bracket and old battery. Discard properly. Install the new
battery and secure.
6. Reconnect the battery (red to positive and black to negative).
7. Replace the recorder bezel.
8. Turn the battery power switch to Standby mode ( ).
9. Close lower panel door.
Note For a consistent 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 (P/N 400159). Dispose of the used batteries in a safe
manner and in accordance with good environmental practices.
probe
access
port
battery
bracket
Thermocouple
interconnect jack
Battery
switch
battery
System
switch
battery
Figure 5-2. Battery and Switch location
Section 5
Maintenance
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HFC Series 5-3