Manual Defrost Procedure (Models 3556-4, 3556-6, 3557-2, 3557-4, 3750, 3750-1, 3752 And 3752-1) - Thermo Scientific 3551 Manual

Refrigerator-freezers and freezers
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Caution
Do not use any sharp instrument,
blade or scraper to remove ice and
frost on refrigerator surfaces
because of the very real danger of
puncturing the cooling coil.
Caution
Do not use any electrical device to
defrost the unit.
When frost accumulates to 1/4" or
more, the operating efficiency of the
unit will be affected.
Manual Defrost Procedure
(Models 3556-4, 3556-6, 3557-2, 3557-4, 3750,
3750-1 and 3752)
Use the following procedure to defrost manually:
Rotate the temperature control knob to the OFF
setting.
Disconnect the power cord from its outlet.
Remove contents of unit. If practical, wrap con-
tents in paper and then in a heavy blanket to
maintain temperature of items, especially those
removed from a freezer. Wear protective gloves
to prevent frostbite when handling cold items.
Open door and allow free circulation of ambient
air.
To speed the process, place pan of warm water
inside the chamber.
Wipe out the interior.
Replace contents.
Reconnect power cord to outlet and set temper-
ature control to desired operating temperature.
M
AINTENANCE
31

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