Norlake COLD WALL EVAPORATOR MILK COOLERS Installation Manual

COLD WALL EVAPORATOR

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

GENERAL

After the unit crate and base have been removed, locate the casters or legs found in the
interior of the cabinet. Attach the casters to the unit base by screwing them into the same
threaded fittings that were used to secure the crate base to the cabinet. Do not tip cabinet
to install casters or legs. Insure that the casters or legs are screwed all the way into the
base.

LOCATION

The self contained refrigeration system located at the bottom of the cabinet requires free air
access for proper operation. The back of the cabinet may be positioned against a wall,
however, there must be a minimum four inch clearance between the sides and a wall.
These guidelines must be followed for cabinets with casters or legs.

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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 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 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.

GENERAL OPERATION

The milk coolers are cooled entirely by convection as a result of copper coils completely
encircling the perimeter of the storage compartment. 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 uses a temperature thermostat that senses the cut­in and cut-out temperatures of the cold wall evaporator coil. The temperature can be
adjusted by turning the thermostat control knob which is located behind the louvered side
panel.

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. To accomplish this, remove the louvered
panel from the cabinet and use a wire brush to loosen any dirt particles that are attached to
the fins. After this is accomplished, use a vacuum cleaner to remove the loosened
particles.

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

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