Specifications

7
Undercounter Laboratory / Pharmacy Refrigerators / Freezers
For customer service, call [phone], [phone], Fax [phone], www.delfield.com
SCIENTIFIC
Caster installation
1. Carefully place the unit on its back (see illustration at right).
2. Located on each end of the compressor channel are 4 hex head screws, for a total of
8 screws. Remove them. 8 additional screws are provided with your casters.
3. Place a locking plate caster over one of the front holes, matching the 4 mounting
holes to the pre-drilled holes in the underside of the unit. Insert 4 hex head screws
and tighten. Repeat with the other locking front casters.
4. Repeat step 4 with the non-locking casters in the rear of the unit.
5. Carefully lift the unit upright.
After installing casters, the unit must stand upright for twenty-four (24)
hours before being powered up to assure oil return to the compressor
sump.
Plate Casters
W/Locks
Plate Casters
W/O Locks
Screws
Plate caster installation, 400 & 4000 Series.
Undercounter Caster Installation
WARNING
Environmentally friendly R404A refrigerant is used. The system
has the capability of maintaining between 33°F (1˚C) and 40°F
(4˚C) in heavy use operations. Systems are controlled using
Delfield’s electronic temperature control. It provides improved
pull down times, reducing compressor cycling and longer
compressor life with lower energy consumption. Evaporator
condensate is eliminated using an energy efficient hot gas
system.
After the unit is connected to power it will automatically begin
operating. With the doors closed, the temperature of the
cabinet should reach 36°F to 40°F (2°C to 4°C) on refrigerators
in about one hour. Temperature maintains about 38°F (3°C)
in the box. Continuous opening and closing of the doors will
hamper the unit’s ability to maintain optimum refrigeration
temperature.
Important Front-Breathing Information, L4427N & L4427N-G
1. During the cooling mode, compressor and evaporator fan
run simultaneously.
2. During an actual defrost event other than the off-cycle
defrost, compressor stays off but the evaporator fan runs
continuously.
Defrosting
Refrigerators defrost automatically with every cycle of the
compressor. The water generated is routed to a pan on the
rear of the unit and is evaporated by the heat given off by the
compressor.
Service Alert
Contact Technical Support at 1-800-733-8829 if you are
unsure of the proper function.
Refrigeration Operation
Cooling Cycle Defrost Cycle
Compressor On Compressor Off Compressor Off
Evap Fan On Evap Fan Off Evap Fan On Evap Fan Off Evap Fan On Evap Fan Off
LU406(CA) X X X
LU407(CA) X X X
L4427N(-G) X X X
Evaporator Fan Operation