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13
OPERATIONS MANUAL
WORKTOPS/UNDERCOUNTERS & SANDWICH UNITS
DC POWER SUPPLY
WHEN EQUIPPED
DEFROST
TIMER
FIGURE 11: Evaporator Assembly (Sandwich)
06/02/10
FIGURE 12: Defrost Timer
EVAPORATOR ASSEMBLY
All undercounter refrigerators and freezers have an easily acces-
sible, easily serviceable, performance-rated, forced-air evapora-
tor assembly which utilizes a plasticized fin coil for extended life.
All models utilize a full length, extra large evaporator coil with a
uniquely directed air flow distribution which keeps compartment
product at uniformly constant temperatures (see Figure 11).
IMPORTANT NOTE: All refrigerators are designed with an
automatic, “off-cycle” defrost system which means that
defrosting occurs automatically when the compressor is
not operating during an off-cycle. Do not set the thermo-
stat too cold where the cabinet temperature will fall below
35°F (1.7°C) because the evaporator will become blocked
by ice since the compressor off-cycle will be considerably
shortened. This will result in loss of product stored within
the cabinet and require service to defrost the evaporator
and re-adjust the thermostat.
FREEZER SYSTEM AND ADJUSTMENT
All self-contained sandwich unit freezers are designed and fac-
tory set to maintain an average cabinet temperature of -4° to
0°F (-20° to -18°C). All freezers are designed for the purpose
of holding pre-frozen product and although they are capable of
freezing small quantities of fresh product, they are not designed
to be blast chillers or ice-cream freezers. Do not attempt to freeze
bulk quantities of fresh food or ice-cream. The temperature con-
trol is accessible inside of the cabinet product compartment, on
the right back wall next to the evaporator coil (see Figure 11 for
thermostat location). If an adjustment is necessary to maintain
the above temperature range only, place a screwdriver into the
thermostat slot and turn clockwise for a colder cabinet tem-
perature or counterclockwise for a warmer cabinet temperature.
Further adjustments out of the factory design temperature range
must be made by a qualified refrigeration mechanic only.
IMPORTANT NOTE: Turning a thermostat fully counter-
clockwise turns the refrigeration compressor “off.”
DEFROST OPERATION
All freezer models are equipped with an automatic, electric
defrost system consisting of electric evaporator coil and drain
pan heaters, a defrost time clock and an automatic defrost limit
switch. The defrost system is time initiated by the time clock and
temperature terminated by the automatic limit switch. The time
clock is preset for three (3) defrost periods per day at eight (8)
hour intervals and a fail safe cut-off time of 20 minutes. Please
note that defrost settings are not programmable.
The defrost time clock is located in front of the electrical con-
sole box in the rear machine compartment of your freezer (see
Figure 12). If desired, to pre-set the initiation of the defrost
cycle to the time of day on the defrost time clock, turn the knob
on the center dial of timer face clockwise until the unit defrost
cycle begins (compressor and all fans will terminate). Defrost
will begin at this same time every day at eight (8) hour intervals.
For example, if an 8:00 am defrost is desired, at 8:00 am turn
the defrost manual set knob to initiate defrost and a defrost cycle
will start every day at 8:00 am, 4:00 pm, 12:00 am. It will be
necessary to reset the time of defrost on the timer if the freezer
is turned off or has loss of power.
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