Norlake GR422 Installation Manual

MILK COOLER STORAGE

Installation, Operation, and

Maintenance Instructions

Model Number: GR422

Serial Number:

Nor-Lake Parts and Service

1-800-388-5253

Nor-Lake, Incorporated 800-388-5253 Parts/Service
727 Second Street 800-955-5253 Sales
P.O. Box 248 715-386-2323
Hudson, Wisconsin 54016 715-386-6149 FAX
Email: [e-mail]

www.norlake.com

For any correspondence pertaining to this product, please contact the Service Department of Nor­Lake, Incorporated. Be sure to include the product model number and serial number with any
correspondence.

09/14 Rev. B 123948

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INSPECTION

When the equipment is received, all items should be carefully checked against the bill of lading to
ensure 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 and has been crated in accordance with transportation rules and guidelines. Manufacturer is
not responsible for freight loss or damage.

INSTALLATION

GENERAL

After the unit crate and base have been removed, locate the legs or casters found in the interior of
the cabinet, if applicable. Legs or casters are optional for this cabinet. Attach the legs or casters to
the unit base by screwing them into the same threaded fittings that were used to secure the crate
base to the cabinet. Insure that the legs or casters are screwed all the way into the base.

LOCATION

The air cooled refrigeration system located on the top of the cabinet requires free air access for
proper operation. Allow a minimum four inch (10.2cm) clearance between the back of the cabinet
and a wall for condenser discharge.

Proper door gasket seal and door alignment are assured when the cabinet is installed on a firm,
level supporting surface. After the cabinet is placed in its permanent location, a cabinet installed
with legs can be leveled by turning the bottom portion of the adjustable legs. Shim material should
be used to level a cabinet that will sit directly on the floor. If casters or legs are not used, it is
required by NSF to seal the cabinet to the floor with an approved sealant such as Dow Corning
#732 silicone.

Examine the door gasket seal by closing the door(s) on a piece of light paper at intervals of
approximately six inches (15.2cm) around the perimeter of each door. When the seal is correct, a
substantial drag should be felt when attempting to remove the paper with the door completely
closed. Each hinge is provided with slotted mounting holes in the wing that is secured to the door.
This feature applies or removes gasket pressure on the hinge side of the door.

If the doors are out of alignment on the cabinet, the doors can be adjusted. This can be
accomplished by opening the door and loosening the screws that hold both the top and bottom
hinges to the cabinet. After adjusting the door so that it is aligned correctly, tighten the screws to
securely hold the hinges in place.

Physical Specifications

Exterior Dimensions Refrigerant
Width x Depth x Height* Type/Amount

63-3/8" x 35-1/2" x 64-7/8" See Serial Tag
(161cm x 90.2cm x 164.8cm)

* Note: Height dimension is without optional legs or casters.

09/14 Rev. B 123948

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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 this unit. All inter 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 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

Type of
Connection Volt/Hz/Ph

Cord 115/60/1

GENERAL OPERATION

The Milk Storage unit employs a unit cooler evaporator located inside the cabinet as the heat
removing source. Through the refrigeration process, heat is captured in the evaporator, transferred
to the condensing unit on top of the cabinet, and expelled to the surrounding outside air. It is
extremely important to allow a four inch clearance between the back of the unit and a wall for the
refrigeration process to function properly.
During the operation of this cabinet, frost will periodically form on the 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 unit cooler drain pan and travel down the drain tube to a floor drain or
the optional condensate vaporizer.

GENERAL MAINTENANCE

PERIODIC CLEANING

Beginning with the initial installation, the interior surfaces of the cabinet should be periodically wiped
down with a solution of warm water and baking soda. This solution will remove any odors from
spillage that has occurred. The exterior of the cabinet should also be cleaned frequently with a
commercial grade glass cleaner or with mild soap and water. Never, under any circumstances, use
an abrasive cleaner or alkaline solution.

Monthly cleaning of the condenser will aid the heat transfer characteristics of the refrigeration
system and increase its efficiency. Dust, dirt, and lint will tend to accumulate on the fins of the
condensing unit. This obstruction will affect the flow of air through the condenser, thereby lowering
the efficiency of the system. A wire brush or a brush with stiff bristles can be used to loosen these
particles that are attached to the fins so that they may be removed with a vacuum cleaner. Failure

to keep the condenser coil clean and clear of obstructions could result in temperature loss
and damage to the compressor.

All moving parts have been permanently lubricated and will generally require no maintenance.

09/14 Rev. B 123948