Norlake MR532 Installation Manual

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BOTTOM MOUNT

REFRIGERATORS AND FREEZE RS

Installation, Operation and Maintenance Instructions

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. Do not sign the freight
bill clear until the freight has been properly inspected for damage. All units should be
inspected for damage including concealed damage by uncrating immediately. If any
damage is found, it should be reported to the carrier at once, noted on the Bill of Lading
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. The manufacturer is not responsible for freight loss
or damages.

INSTALLATION

The unit has been secured to the shipping base with four bolts. Remove these bolts
and separate the unit from the shipping base. Locate the casters or legs found inside
the unit. Attach the casters or legs to the unit base by screwing them into the threaded
fittings that were used to secure the shipping base. Use the wrench provided to tighten
the casters to the unit. The casters with the brakes should be installed on the front of
the unit. For proper drainage of condensate, the unit should be level when placed in its
permanent location. Leveling shims are included in the accessories package in the
cabinet. Loosen the casters and insert shims between caster and bottom of the unit.
Re-tighten the caster.

The exterior of the cabinet and doors have been protected by a plastic covering. Peel
this protective covering before installation. After removing the covering, clean the
interior and exterior surfaces of the unit with soap and water and a rinse with clean
water. Do not use chlorinated cleaners on the surfaces as they can cause corrosion.

If the door(s) have come out of alignment during shipping, they will need to be adjusted.
This can be accomplished by opening the door(s) and loosening the screws that hold
both the top and bottom hinges to the cabinet. After adjusting the door so it is aligned
correct, tighten the screws to securely hold the hinges and door(s) in place. The door on
a single door unit can be reversed in the field by installing Hinge Kit (part number
146524, available from your parts dealer).

The shelves and self clips are packaged inside the unit. Install the shelf clips on the
pilasters inside the unit and set the shelves on the clips. The shelves are adjustable in
½” increments.

The refrigeration system located at the bottom of the unit requires free air access for
proper operation. Allow a minimum of seven inches between the back of the cabinet
and the wall. Do not locate the unit next to heat generating equipment or in direct
sunlight.

08/13 Rev. C 146527

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Confirm that the proposed electrical outlet has the correct voltage, frequency and
current carrying capacity for the requirements of the unit. This information is noted on
the data plate on the inside left wall of the unit. The unit should be isolated on a circuit.
Do not use an extension cord to get power to the unit. Improper electrical installations
will void the compressor warranty.

OPERATION

Once the unit is connected to the proper power supply, the display panel will be lit for
two (2) se conds followed by a beep, the cabinet temperature will be displayed and the
compressor will start to run. The compressor is running whenever ‘COMP’ is lit on the
display. If the cabinet temperature is higher than +68˚F (refrigerator) or +14˚F
(freezers), the display will read <Hi>. If the cabinet temperature is lower than +14˚F
(refrigerator) or -50˚F (freezer), the display will read <Lo>. If the unit does not start
immediately, check the power switch located on the bottom of the top grill. If the cabinet
temperature is below +14˚F (freezer) or +50˚F (refrigerator) when the unit is plugged in,
there will be a three minute delay before the compressor will start.

The interior light will come on when a door is opened.
Whenever a door is opened, the door open light on the display will be lit and the

evaporator fans will stop. The fans will start three seconds after the door is closed. If a
door is open for more than 30 seconds, the door open alarm will beep two times. If a
door is open more than 60 seconds, the alarm beeps five times and if open more than
five minutes, the alarm will beep continuously.

The electronic control has an alarm function to remind the operator to periodically clean
the condenser coil. The condenser coil will collect dust and debris during normal
operation. If left unclean, this will lead to poor performance, high energy consumption
and possible compressor failure. Warranties do not cover failures related to condenser
cleaning. At 6 month intervals, the display wi ll blink “CL” and the buzzer will sound to
remind the operator to clean the condenser coil. After one hour, the buzzer will stop but
the display will continue to blink “CL”. Refer to the ‘MAINTENANCE’ section of this
manual to learn how t o clean the condenser coil. The electronic control can be reset to
normal operation by pressing the ‘Mode’ and ‘Verify’ buttons at the same time for five
seconds. Depending on conditions, the condenser coil may require more frequent
cleaning.

When a door is closed on a cabinet that is running, an internal vacuum is created as the
internal air is cooled and the door can be difficult to open for awhile. These units
incorporate a pressure relief valve that equalizes the vacuum to allow the door to be
opened sooner.

08/13 Rev. C 146527