Delfield 4427N, Installation & Operation Manual

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13
Compact Refrigerators
Power Switch
Salad and Mega top 4460, 4464, and 4472 models are equipped
with a power disconnect switch located at the rear of the unit
just below the thermostat control knob. Switch must be in
the “on” position for the unit to operate.
Operation
After the cabinet is connected to the power source it will
automatically begin operating. With the covers and doors
closed, the temperature of the cabinet should reach 36°F to
40°F (2°C to 4°C) in about one hour. Temperature on salad
top will maintain 33°F to 41°F (1°C to 4°C) with pans recessed
2.5” (6.5cm) at 86°F ambient room temperature for a period
of four hours, meeting NSF-7 requirements. The temperature
control on a flat top unit other than 4427 models is located
on the back panel inside the refrigerator and can be adjusted
to meet the current conditions. The temperature control on
4427 flat top and all salad top units is located in the rear of
the unit, 14" to 16" above floor in access hole.
Temperature Control Instruction for Flat Top Units
except 4427 Models
A thermostat located in the evaporator housing on the interior
rear of the cabinet controls the temperature inside the box. The
factory setting for the control is “4” and maintains about 38°F
(3°C) inside the box. Set toward “1” for higher temperatures
and set to a higher number for lower temperatures.
Temperature Control Instruction for Salad Top
Units and 4427 Flat Top Models
A thermostat located in rear of cabinet controls the
temperature inside the box. The factory setting for the control
is 4.5 and maintains about 34°F(1°C) to 36°F (2°C) inside the
box. Set toward 1 for higher temperatures and set to a higher
number for lower temperatures.
Evaporator Fan(s) Operation
Salad and mega top refrigerator units under 60" wide have
one evaporator and one evaporator fan motor and blade.
60", 64" and 72" wide units have one large evaporator and
two fan motors and blades. Both motors rotate in the same
direction and both have identical fan blades.
Important Information on 4427 Solid Top Models:
The unit is Energy Star Version II compliant. During normal
operation the evaporator fan pulses independently of the
compressor as dictated by the Danfoss Controller as follows:
1. During the cooling mode, compressor and evaporator
fan run simultaneously.
2. During the compressor off mode, evaporator fan pulses
three minutes on and three minutes off.
3. During an actual defrost event other than the off-cycle
defrost, compressor stays off but the evaporator fan runs
continuously.
Cabinets with pans should be operated with pans
in place. Operating the cabinet without all pans
in place will lessen efficiency and may damage
the cabinet.
Continuous opening and closing of the door will
hamper the cabinet’s ability to maintain optimum
refrigeration temperature.
Top section is not intended for overnight storage.
Product should be removed from pans. Pans can
remain in cabinet while empty.
Refrigerated Cabinet Operation
Flat Top Units except 4427 Models
Temperature Control Knob Access
Salad Top Units and 4427 Flat Top Models