Nor-Lake General Purpose Lab Ref-Fzr User Manual

LABORATORY REFRIGERATOR-

FREEZER

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 at the manufacturing facility and has been crated in accordance with transportation rules and
guidelines. Manufacturer is not responsible for freight loss or damage.

Before connecting the refrigerator to the power supply, let it stand for approximately two hours to
reduce the possibility of malfunctions in the cooling system due to transport handling

INSTALLATION

GENERAL

After the unit crate and crate base have been removed, ensure that the cabinet is level. All four
corners of the unit must rest firmly on a solid floor. The cabinet is equipped with adjustable front
rollers to level the unit. Remove the toe grill as shown below and use a flat bladed screwdriver or
3/8” socket wrench to adjust the front rollers (see the illustration below). Raise the front of the
cabinet enough so that the doors will close freely when opened halfway. The cabinet should slope
¼” to ½” from front to back. Then level the cabinet from side to side.

Note: It is extremely important that the refrigerator be level in order to function properly. If the

refrigerator is not properly leveled during installation, the door may be misaligned and not close or
seal properly causing cooling, frost or moisture problems.

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Choose a location near a grounded electrical outlet. Do not install the refrigerator-freezer where the
temperature will drop below 55°F (13°C) or rise above 110°F (43°C). The compressor will not be
able to maintain proper temperatures inside the refrigerator-freezer.

Allow adequate space around the unit for good air circulation. A minimum of 3/8 inch (10 mm)

space on the sides and top and 1 inch (25 mm) space at the back of the refrigerator-freezer is
required for adequate air circulation.
Do not block the toe grille on the lower front of the refrigerator-freezer. Sufficient air circulation is
essential for proper operation of the unit.

Note: The exterior walls of the refrigerator may become quite warm as the compressor works to

transfer heat from the interior. Temperatures as much as 30°F (-1°C) warmer than room
temperature can be expected. It is particular in hotter climates to allow adequate space for air
circulation around the refrigerator.

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 or adapter plug to wire any unit. Refer to the serial tag for all

pertinent electrical information.
The refrigerator-freezer must be plugged into its own 115 volt, 60 Hz, single phase outlet. The
power cord of the refrigerator is equipped with a three-prong grounding plug for protection against
shock hazards. It must be plugged into a properly grounded three-prong receptacle. The
receptacles must be installed in accordance with local codes and ordinances.
If voltage varies by more than 10%, refrigerator performance may be affected. Operating the
refrigerator with insufficient power can damage the compressor.
To prevent the refrigerator from being accidentally turned off, do not plug the unit into an outlet
controlled by a wall switch or pull cord.
Do not pinch, knot or bend the cord in any manner.

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

OPERATION

Cool Down Period

For safe storage of product, allow a minimum of 12 hours for the refrigerator to cool down
completely. The refrigerator will run continuously for the first several hours.

Temperature Control

The temperature control is located inside the refrigerator. When first energizing the refrigerator­freezer, move the refrigerator and freezer controls to ▼ which is the recommended initial setting.
Adjust the controls after 24 hours if required. Adjust the temperatures gradually. Move the control in
small increments and allow the temperature to stabilize between setting changes.

For colder temperatures, adjust the control knob towards Colder.
For warmer temperatures , adjust the control knob towards Cold.

Turning the refrigerator control will change temperatures in both the refrigerator and the freezer. If
the temperature control is turned to a colder setting, the freezer control may require adjustment to a
warmer setting. Turning the freezer temperature control will change only the freezer temperature.

To maintain required temperatures, a fan circulates air in the refrigerator and freezer compartments.
Do not block cold air vents with product.

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TEMPERATURE ADJUSTMENT GUIDE

If Refrigerator compartment is too warm

Turn Refrigerator Control slightly towards

Colder
If Refrigerator compartment is too cold Turn Refrigerator Control slightly towards Cold
If Freezer compartment is too warm Turn Freezer Control slightly towards Colder
If Freezer compartment is too cold Turn Freezer Control slightly towards Cold
To turn Refrigerator OFF Turn Refrigerator Control to 0

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