Thermo Scientific Jewett Blood Bank Refrigerators
Installation and Operation
1
Introduction
This product is a complete packaged unit ready to operate when
plugged into an electrical source. It is not necessary to have a
refrigeration serviceman set the unit in operation. The unit has
been tested prior to shipment. Read all the instructions before
proceeding with installation..
2
Inspection for Damage
Uncrate the product and remove all packing and crating
materials. Inspect the product and parts thoroughly for damage
or missing parts. File all claims for damage with the
transportation company immediately. Do not file claims with the
manufacturer.
3
Installation Instruction
1. Measure all doorways and passageways for clearance before
moving cabinet. Model sizes 17 and 37 will pass through a
standard 30" X 84" door opening. Model sizes 25 and 55 will
pass through a 36" X 84" door opening. For additional front
to back clearance, remove the door handles using a
screwdriver. If additional clearance is needed, remove the
condensate evaporator assembly, channel guards and drain
tube from the back of the cabinet. Remove (2) 1/4" bolts
using a 7/16"wrench. A 3/8" nut driver will enable removal
of the condensate heater. To remove the drain tube, detach
the rubber tube located below the unit cooler inside the
cabinet. With a slight twisting motion, pull drain tube from
the back of the cabinet. Do not disconnect wiring on
condensate evaporator assembly. Flexible armored cable will
permit sufficient movement to swing assembly to top or side
of cabinet.
2. Inspect the interior, exterior and mechanical equipment for
special instruction tags fastened at various points.
3. Move the refrigerator into the desired location. Make sure
the bottom of the refrigerator is evenly supported. Thin
shims under the points of rest can be used to equalize the
distribution of weight. If the cabinet sets on an uneven floor,
a slight rocking or vibration might result when the
condensing unit is set in operation.
4. A minimum of 8" clearance is required between the ceiling
and the top of the cabinet; and a minimum of 3" clearance is
required at the rear to allow adequate ventilation of the
mechanical equipment.
5. The condensing unit is shipped with all service valves open
and ready for operation. Do not adjust the refrigerant valves
or the temperature control.
6. Use of electrical characteristics, other than those specified on
the serial plate will cause permanent damage to the
mechanism. The serial plate is located inside the refrigerator
at the top of the right hand wall.
7. All models have been provided with an electric condensate
evaporator located on the back of the cabinet. Periodic
cleaning of the condensate pan will insure proper operation.
CAUTION!
PAN AND HEATER ARE HOT.
8. Operate the refrigerator for several hours to allow the unit to
reach normal operating temperatures before storing product.
NOTE: Erratic operation on initial start-up does not indicate
a faulty control. When normal operating temperature is
reached, the condensing unit will cycle regularly.
4
Maintenance Instructions
1. Frequent cleaning of the interior and exterior with water and
a good fungicidal detergent that eliminates harmful bacteria,
stains and other foreign matter will keep the unit fresh and
new looking.
2. Shelves and/or drawers should be removed from the cabinet
and thoroughly scrubbed. Clean door gasket periodically.
3. The unit cooler fan operates continuously when the door is
closed and requires no lubrication. These models require no
manual defrosting. The cooling coil automatically defrosts
when the condensing unit is on the off cycle.
4. The condensing unit needs no oil or other lubrication. The
finned condenser can become clogged with lint or dust. The
openings between the fins should be kept clean. A vacuum
cleaner or small test tube brush works well for this purpose.
This should be accomplished on an annual basis. Failure to
keep the condenser fins free of dirt and lint will result in
erratic operation and may damage the refrigeration system.
5. Annual inspection of the mechanical refrigeration equipment
by a qualified serviceman is recommended. A qualified
mechanic can frequently make adjustments that will prevent
future breakdown.
6. The refrigeration system is charged with refrigerant R134a.
If the system is opened for any reason, extreme care should
be taken to prevent the entry of moisture-bearing air. A new
drier should be installed in the lines when the system is
closed.
5
Operating Instructions
JEWETT Blood Bank Refrigerators are factory preset to operate
within a +2° C to +4° C temperature range. Manual defrosting of
the refrigerator cabinet is not required, as the unit cooler defrosts
automatically when the condensing unit is on the off cycle. The
unit cooler fan motor inside of the refrigerator runs continuously
when the door is closed to provide a uniform cabinet
temperature.
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