Replace Battery(S); Clean Lid Gasket; Defrost Chamber; All Models Except 3 Cu Ft - Thermo Scientific HERAfreeze HFU Series Operating And Maintenance Manual

Section 5
Maintenance

Defrost Chamber

Clean Lid Gasket

Replace Battery(s)

All Models Except 3 cu ft

5-2 HFC Series
1. Remove all product and place it in another freezer.
2. Turn the unit off and disconnect it from the power source.
3. Turn off the battery switch (O). See Figures 5-1 and 5-2.
4. Open the lid and remove sub-lids. Place towels on the chamber floor.
5. Allow the frost to melt and become loose. Remove with a soft cloth.
7. After defrosting is complete, clean the interior with a non-chloride
detergent. Rinse thoroughly with clean water and dry with a soft cloth.
8. Plug unit in and turn power switch on.
9. Turn the battery power switch to Standby mode ( ).
10. Allow the freezer to operate empty overnight before reloading the
product.
The lid gasket should be cleaned a minimum of once per month. Using a
soft cloth, remove any frost build-up from the gasket, sub-lids and lids.
The clean gasket alarm occurs every three months as a reminder to remove
frost build-up from the gasket and doors. Press the Silence key to mute the
audible alarm. The lid gasket may need to be cleaned more frequently if
dirt or excessive frost build-up prevents the door from closing properly.
The following instructions describe the battery replacement procedure for
specific models.
1. Open the lower panel door by grasping the handle and pulling.
2. Locate the battery power switch (Figure 5-1). Turn the battery power
switch to the Off position (O).
3. Remove the four screws holding the recorder bezel to gain access to the
battery.
4. Remove the three nuts securing the battery bracket. See Figure 5-1.
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).
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