Specifications, Routine care & maintenance – Taylor-Wharton CP Series User Manual

Page 3

Specifications

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Routine Care & Maintenance

DO NOT attempt to fasten any device to the container.

Welding, brazing piercin of the container in any matter, or

putting liquid other than nitrogen into the container will

result in permanent damage.

Refrigeration depends on the presence of cryogenic

nitrogen refrigerant in the refrigerator. Be sure to fully

charge the refrigerator with refrigerant to prevent loss of

stored material. Please refer to the Operation selection

of this document for instruction for filling procedure. If you

are not able to fully charge the CryoPak by weight, it is

possible that moisture has accumulated in the filler

material over time with normal useage. This accumulation

will result in displacement of refrigerant. Allow the refrig-

erator to warm to room temperature. The warming proce-

dure may take as long as four weeks. Then direct dry heat

not to exceed 150°F (65°C) (from hair dryer or other source)

into the refrigerator. The unit is acceptably dry when the tare

weight is within 1 lb. (0.45 kg) of the as received from the

manufacturer tare weight.

If high evaporation rates are apparent under normal operat-

ing conditions, the refrigerant may be losing its vacuum.

Sweating of freezing of the outside casing are definite

indications that the vacuum integrity is not normal. Read the

Handle with Care booklet (form number TW-10) supplied

with the shipper for more information on the proper handling

of your cryogenic refrigerator.

DO NOT fill the CryoPak containers with any other liquid
other than liquid nitrogen.

NOTE: Specifications are based on vertical storage. Evaporation rates and working time will be effected by manufac-

turing tolerances and temperature of material being stored and other variables unseen. Specifcations are subject to

change without notice.