Forma Scientific, Inc._______________________________________________Maintenance
6-2
Note: Before replacing the grill, inspect the filter for cleanliness and clean or replace it
if necessary. Refer to Figure 6-1.
Compressors and fan motors are permanently lubricated and do not require
servicing.
After cleaning, remove the lockout/tagout devices and return the unit to service.
6.3 Cleaning the Air Filter (refer to Figure 6-1)
A foam air filter is located at the front of the freezer base. When the filter appears
dirty it can be easily removed for cleaning. The filter and grill assembly are held in place by
snap fasteners on each corner of the grill.
Remove the grill by grasping it at the corners and gently pulling it away from the
frame. Remove the filter and wash it with a mild detergent. Dry it by pressing it between two
towels. Should the filter become torn or excessively dirty, a replacement may be ordered
from Forma Scientific, Inc. (Part # 760162).
6.4 Defrosting the Chamber
The type of frost formed in the chamber is generally very soft and may be easily
removed with a soft cloth. Do not use any type of abrasive brushes. A complete defrosting
may occasionally be required. To completely defrost the chamber:
• Remove all product and place it in another freezer.
• Turn the unit off and pull the plug.
• Open all of the doors and place towels on the chamber floor.
• Allow the frost to melt and become loose.
• Remove the frost with a soft cloth.
• After defrosting is complete, clean the interior with a non-chloride detergent and
wipe the chamber dry with a clean cloth.
Do not use strong alkaline or caustic agents. Stainless steel is corrosion
resistant, not corrosion proof. Do not use solutions of sodium hypochlorite
(Purex, Clorox, etc.), as they may also cause pitting and rusting.
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