Southbend 20120SB - Manual (Page 7)

FUNCTIONAL DESCRIPTION
7 Printed in USA 12/02 Refrigerated Base-Self-Contained © 2002
SYSTEM DESCRIPTION
This unit is a self contained, automatically controlled,
continuous duty, perishable food storage system. It is
designed with the intent and purpose of storing food items.
The operating temperature is automatically monitored by
controls that are factory set to maintain a predetermined
adequate condition.
The equipment is installed in two basic compartment
assemblies. They are:
• Condensing Unit Compartment - This area contains the
condensing unit along with the necessary controls.
• Storage Compartment - This insulated food storage area
is clear storage area.
SYSTEM OPERATION
The design of the refrigerated cabinet focuses primarily on
the safe storage of food products requiring refrigeration. In
engineering, considerable attention was placed on its
functionality and its serviceability.
The refrigeration system is a closed loop system. Barring a
leak in the system, the addition of refrigerant is not required.
However, a periodic check of its level is recommended to
insure that the system operates at the optimum level at which
it was designed.
The condensing unit is found within the regular equipment
compartment. Also in this compartment is the electrical
control panel that contains the power switch and a terminal
box. On all models that feature forced air evaporators, a
heated condensation evaporator pan or a heated condensing
unit base is provided. The evaporator pan is also located in
the equipment compartment.
Special care in the initial loading of the storage compartment
should be taken. It is suggested that the loading be
scheduled in three equal portions allowing three hours
between each loading.
The chilled food compartment is designed for the storage of
perishable food items that require a temperature range of 37
to 40 degrees Fahrenheit. It is a general rule that adequate
spacing is allowed between stored items to allow for proper
air circulation.
SCHEDULED MAINTENANCE
INTRODUCTION
To ensure the longest and most trouble free operation of the
unit, a thorough maintenance schedule is required to be
adhered to periodically. The maintenance system should
be designed to maximize the efficient use of maintenance
personnel, reduce down time, and provide the orderly
acquisition of spare parts support.
The Middleby refrigeration cabinet will generally be in
operation in a facility where scheduled maintenance is
performed according to Maintenance Index Plans. Your unit
is no exception to required maintenance. This section of the
manual is intended as an alternative to any standard
maintenance program that may pre-exist. The preventive
maintenance schedule is based upon similar maintenance
requirements for commercial refrigeration equipment.
PREVENTIVE MAINTENANCE ACTION INDEX
If you do not have a Maintenance Index Plan, one is included
for you in Table 4.1.
PREPARATION FOR MAINTENANCE
Since many areas affected by the maintenance schedule are
electrically supplied, it is recommended that the system be
de-energized prior to making the inspections.
MAINTENANCE
Weekly Inspection
1. The unit should first be de-energized by switching the
toggle switch to the “OFF” position. The switch is
found on the control panel in the condensing unit
compartment.
NOTE: It is necessary to first remove the front air grill. This
is done by lifting it straight up then pulling the bottom out and
down.
2. Using a vacuum or small hand broom, brush the
condenser in a vertical motion to remove any dust or
debris that may have accumulated.