Forma Scientific, Inc._______________________________________________Maintenance
6-1
Section 6 - Routine Maintenance
6.1 Cleaning the Cabinet Exterior
Clean the freezer exterior with soap and water and a general use laboratory disinfectant.
Rinse with water.
6.2 Cleaning the Condenser
De-energize all potential sources of energy to unit.
Lockout/tagout the de-energized controls.
The Condenser Hot light illuminates when the temperature in the refrigeration
compartment reaches 40° C, which typically indicates a clogged air filter, a clogged
condenser, or a fan failure. This compartment temperature increase may also be the result of
operating the freezer in high ambient temperatures.
The efficiency of the refrigeration unit is directly related to the temperature of the
air entering the air-cooled condenser. Dust in the condenser fins slows the rate of heat
dissipation and increases compressor operating temperature (also decreasing compressor
life). A dirty condenser will reduce the overall performance of the refrigeration system in
terms of recovery time and set point control accuracy and may ultimately cause
compressor failure.
The air-cooled condenser (the finned surface located in the center area of the
refrigeration compartment) should be cleaned as often as necessary to ensure efficient
compressor operation. Forma Scientific, Inc. recommends a minimum of twice a year.
To clean the condenser, remove the front grill by grasping the assembly at the
corners and gently pulling it away from the frame. Clean the compressor housings and
condenser fins with a vacuum cleaner or air-hose. Other refrigeration system parts are
cleaned by removing the back and side panels. (Refer to Figure 6-1.)
To Next Page
Loading...