Norlake UR081 Installation Manual

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UNDERCOUNTER REFRIGERATORS

INSTALLATION, OPERATION AND MAINTENANCE

INSTRUCTIONS

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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 in the 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 legs or casters found in the
interior of the 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.
Ensure that they are screwed all the way into the base.

LOCATION

The refrigeration system located at the bottom of the cabinet requires free air access for
proper operation. The cabinet may be enclosed on three sides, however, there must be
a minimum four inch clearance from the bottom of the cabinet to the floor. This model

cannot be operated without the legs or casters in place, and the bottom of the cabinet
cannot be enclosed. The cabinet should also be leveled when it is placed in its

permanent location.

Table 1 – Physical Specifications

Unit Model Exterior Dimensions

Width x Depth x Height*
UR081 27” x 35” x 36” See Serial Tag
UR162 47-3/4” x 35” x 36” See Serial Tag
UR202 59-3/4” x 35” x 36” See Serial Tag
UR253 71-3/4” x 35” x 36” See Serial Tag
UR293 83-3/4” x 35” x 36” See Serial Tag
UR334 95-3/4” x 35” x 36” See Serial Tag

*Note: Height dimension includes 6” standard legs. Add 3” for optional backsplash.

Refrigerant Type/Amt. (Oz)

05/11 Rev. B 089107

ELECTRICAL

Check the proposed outlet to be used to ensure 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 wire 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 Table 2 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.

Table 2 – Electrical Data

Unit Model Type of Connection Volt/Hz/Ph

UR081 Cord 115/60/1
UR162 Cord 115/60/1
UR202 Cord 115/60/1
UR253 Cord 115/60/1
UR293 Cord 115/60/1
UR334 Cord 115/60/1

GENERAL OPERATION

The Undercounter series of cabinets, except for the UR081 Cold Wall version, employ 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 located at the bottom of the cabinet, and expelled to the surrounding
outside air. It is extremely important to maintain the minimum four inch clearance from
the bottom of the cabinet to the floor for the refrigeration process to function properly.

The cabinet cannot be operated without the legs or casters installed.

During the operation of these unites, frost will periodically form on the coil surface. Each
time the refrigeration compressor cycles to the “off” position, the evaporator fans and
condenser fans will continue to run. This will tend to keep the interior of the cabinet at a
constant temperature and at the same time, remove any frost build up on the unit by
circulating the inside air over the coil. The water produced will collect in the unit cooler
drain pan and travel down a drain tube to the condenser drain pan where the water will
vaporize back into the air.

The refrigeration system is designed to provide a 38° F temperature. The system
employs a “constant cut-in” control. This device accomplishes control of the interior by
sensing the evaporator coil. Since the control features a non-adjustable “cut-in”
temperature of 38° F, and the sensor tube is embedded in the fins of the evaporator coil,
nuisance coil icing is eliminated because the controller will not permit compressor start
up until the coil reaches 38° F. Adjusting the control knob on this system will adjust the
“cut-out” temperature only. The control knob on the refrigerator is located on the unit
cooler front panel.

05/11 Rev. B 089107