Norlake AR081 Installation Manual

MILK COOLERS

Installation, Operation, and

Maintenance Instructions

INSPECTION

When the equipment is received, all items should be carefully checked against the bill of lading to
insure all crates and cartons have been received. All units should be inspected for concealed
damage by uncrating the units immediately. If any damage is found, it should be reported to the
carrier at once, and a claim should be filed with the carrier. This equipment has been inspected and
tested in the Nor-Lake Manufacturing Facility and has been crated in accordance with
transportation rules and guidelines. Manufacturer is not responsible for freight loss or damage.

INSTALLATION

LOCATION

The self-contained refrigeration system located on the side of the cabinet requires free air access
for proper operation. There must be a minimum four-inch clearance between the sides of the
compressor compartment and building wall or other equipment.

Physical Specifications

Unit Exterior Dimensions

Model Width x Depth x Height*

AR081 47 1/4” 32 3/4” 33 1/4”
AR121 61 1/4” 32 3/4” 33 1/4”
AR161 75 1/4” 32 3/4” 33 1/4”

• Note: Height dimension includes casters.

NOTE:

If one door is flipped open, the total door assembly may be slid from end to end for ease of
accessibility and loading. The total door assembly is also completely removable. However, care
must be taken when repositioning the door assembly on the cabinet to insure the correct door is on
the correct end of the cabinet, because the location of the locating pins on the interior of the doors
is different.

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ELECTRICAL

Check the proposed outlet to be used to insure that the voltage, phase, and current carrying
capacity of the circuit from the electrical panel correspond to the requirements of the cabinet.
NEVER use an extension cord to power any unit. All wiring between the electrical panel and the unit
must be done in accordance with the National Electric Code and all state and local codes. Refer to
the Electrical Data below and the Serial Tag for all pertinent electrical information.

Observe all Warning Labels. Disconnect power supply to eliminate injury from electrical
shock or moving parts when servicing equipment.

Electrical Data

Unit Type of Plug

Connection Configuration Volt/Hz/Ph

Model
AR081 Cord L-15P See Serial Tag

AR121 Cord L-15P See Serial Tag
AR161 Cord L-15P See Serial Tag

GENERAL OPERATION

The milk coolers are cooled entirely by forced air evaporator. During the refrigeration process, heat
is removed through the evaporator tubing and expelled through the condensing unit. It is important
that the flow of air through the side louvers is not restricted in order to ensure the condensing unit
operates properly. Under normal operating conditions, any frost that might accumulate on the walls
during the "on" cycle of the condensing unit may melt during the "off" cycle. Drains are installed in
all milk coolers to accommodate melting frost.

The refrigeration system on this cabinet utilizes a programmable temperature controller to
control the temperature and defrost settings. The controller, which is located in the
condensing unit enclosure, is factory set. Please see the default settings sheet and separate
instructions that are included on the operation of this controller.

During the operation of the refrigeration unit, frost will periodically form on the evaporator coil
surface. Each time the compressor cycles “off”, the evaporator fans will continue to run, which will
keep the internal temperature uniform and, at the same time, remove any frost build up on the coil.
The water produced will collect in the condensing unit drain pan and evaporate.

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