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randell.com
Unit Operation
Your display merchandiser’s temperature is adjusted by a cold control. It is important to
keep the doors closed as much as possible. This is especially important in the summer
and when ambient temperatures exceed 80° F. to help reduce the chance of condensation
forming on the glass and to increase the efficiency of the merchandiser.
NOTE: Even though your display case was designed for heavy use, excessive door
openings should be avoided, in order to maintain proper box temperature and eliminate
the possibility of coil freeze up.
Randell strongly suggests a preventive maintenance program which would include the
following
Monthly
procedures:
1. Cleaning of all condenser coils. Condenser coils are a critical component in the life of
the compressor and must remain clean to assure proper air flow and heat transfer. Failure
to maintain this heat transfer will affect unit performance and eventually destroy the
compressor. Clean the condenser coils with coil cleaner and/or a vacuum, cleaner and
brush.
NOTE: Brush coil in direction of fins, normally vertically as to not damage or re-
strict air from passing through condenser.
2. Clean fan blade on the condensing.
3. Clean and disinfect drains with a solution of warm water and bleach.
4. Clean and disinfect drain lines and evaporator pan with a solution of warm water
and bleach.
5. Clean all gaskets on a weekly if not daily basis with a solution of warm water and
a mild detergent to extend gasket life.
6. Do not wash interior mirrors with abrasive rag or cleansers.
NOTE: DO NOT USE SHARP UTENSILS
PREVENTIVE MAINTENANCE
