Taylor-Wharton XT Series User Manual

Operating Instructions

SAFETY

Before using any cryogenic refrigerator, read
Handle with Care booklet provided with the unit.
It details safety precautions that must be under­stood before using the equipment. If a replace­ment booklet is needed, order one from your
supplier.

Following a few of the safety precautions
described in the Handle with Care booklet.
Please be sure to read the entire booklet.

Store and use these containers only in well
ventilated areas. In a confined area, nitrogen

gas from these units may cause suffocation by
displacing air needed for breathing. Install a
suitable oxygen monitor .

Do not touch liquid or cold metal surfaces
with your bare skin. The liquid nitrogen
refrigerant in these containers is extremely
cold: –196°C (-320°F). Exposure of skin or

eyes to liquid, cold gas or frosted parts could
result in a severe frostbite-like injury . Because
of the extremely low temperature, a face shield
and gloves must be worn when transferring
liquid nitrogen and material into or out of these
containers.

Model Lite rs/inch Lite rs/cm

XTL3 0.4 0.16
XT10 0.75 0.3
XTL8/XT20 1.41 0.56
XT34 2.67 1.05

INSERTING OR REMOVING CANISTERS

To prevent unnecessary loss of liquid nitrogen
and accumulation of ice, the necktube core (the
stopper) should remain in the container when the
stored material is not being accessed. When
accessing stored material, the necktube core
should be removed as briefly as possible.

When removing material from the canisters,
withdraw the canister just far enough to remove
contents. Completely withdrawing the canister
will unnecessarily expose the stored material to
warm, room temperature conditions.

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OPERATION

Filling: Adding liquid nitrogen to a warm con-

tainer may cause splashing and will generate a
significant volume of nitrogen gas as cold liquid
contacts warm refrigerator surfaces. Add liquid
slowly to minimize these effects. Be sure there
is adequate ventilation. Keep you head clear of
the heavy volume of vapor that may be pro­duced. It is extremely cold and could cause
personal injury .

Warning
DO NOT OVERFILL. Over-filling may result in personal
injury due to liquid spillage.

DETERMINING LIQUID LEVEL

Liquid level must be checked at regular intervals
– refrigeration depends on the presence of liquid
nitrogen. The liquid level in the container can be
determined with a dipstick. Insert the dipstick
straight into the container so that it rests on the
canister positioning fixture on the bottom of the
unit. Af ter 5 to 10 seconds, withdraw the
dipstick and wave it back and forth in the air . A
frost section will form representing the depth of
liquid nitrogen in the container .

WARNING
Never use a hollow rod or tube as a measuring rod. When
a warm tube is inserted into liquid nitrogen, liquid will spout
from the top of the tube and may cause personal injury.

The liquid level chart shows volume of liquid
nitrogen vs. depth for XT Series refrigerators.
These values are approximate and are based on
a standard condition with no stored material in
the container . With stored material, the liquid
volume will be slightly less than the value of the
chart.

WARNING
Some canisters have liquid drain opening; some do not. If
canisters are completely removed from the container, liquid
nitrogen may remain in the canister or drain from the
bottom. When removing canisters, stop breifly at the
necktube to allow liquid to drain completely, then handle the
canister carefully to prevent personal injury. Avoid direct
contact with bare skin. The use of proper personal
protective equipment is strongly urged – cryogenic gloves,
face shield and gown – to protect against splashing.

When room temperature product is added,
slowly lower the canister into the refrigerator to
reduce the boiling of refrigerant and the surge of
cold nitrogen gas. When inserting the canister,
tilt the bottom of the canister in the direction of
the index ring notch.

SECURING CONTENTS

The contents of all models may be secured with
a seal or lock through tabs on the edge of the lid
opposite the hinge.

ROUTINE CARE & MAINTENANCE

If ice accumulates inside the necktube, a general
cleaning of the refrigerator should be scheduled
as soon as the stored material can be conve­niently transferred to another refrigerator. To
clean the unit, first remove stored material, then

Extended Time Liquid

Nitrogen Refrigerators

XT SERIES

pour out the liquid, disposing of it out-of-doors where the
cold liquid will not damage driveways and other surfaces.
Warm the container by purging it with air even af ter the
container has warmed to room temperature to evaporate
any collected moisture. When the container is ice-free and
dry , rinse the inner vessel with household bleach. Wash
the inner vessel with a 40 to 1 ratio of water to laundry
detergent solution. Rinse and dry inside and out thor­oughly before placing the container back into service. Do
not use sharp instruments to chip ice; permanent damage
to the container could result. DO NOT attempt to fasten
any device to the container . Welding, brazing, or piercing
of the container in any manner will cause permanent
damage.

Refrigeration depends on the presence of liquid nitrogen in
the refrigerator. Be sure to maint ain correct refrigerant
levels to prevent loss of stored material. Check liquid
levels regularly . If high evaporation rates are apparent
under normal operating conditions, the refrigerator may be
losing its vacuum. Sweating and the formation of frost on
the outer casing are indications that the vacuum integrity of
the refrigerator is not normal. All necessary step s should
be taken to protect the refrigerator’s contents. If these
conditions persist, contact your supplier or Taylor­Wharton’s Technical Response Department at 1-800-TW­T ANKS (989-2657) or email us at

[e-mail] for information on how to

conduct a normal evaporation rate (NER) test in the field.

TRANSPORTAION

Although these refrigerators are rugged, they can be
damaged if abuse or otherwise mishandled. When

moving or transporting the refrigerator, t ake every precau­tion to prevent sliding, tipping, bumping, or dropping the
unit. All refrigerators must be kept upright. Refrigera-
tors containing liquid nitrogen must never be transported in
sealed compartments. V entilation must be assured to
prevent the displacement of air and the related suffocation
hazard.

not manufacturing defects. If you would like to return
goods to Taylor-Wharton for any reason, you must first
obtain a Material Return Authorization (MRA) number for
tracking purposes. Please have a description of your
symptoms and the refrigerator’s serial number ready .
Contact your supplier or call Taylor-Wharton’s Technical
Response Department at 1-800-TW-TANKS (898-2657) or
email us at

[e-mail].

ACCESSORIES

The following accessories are available for HC Series
refrigerators:

• Roller Base – with ball bearing swivel casters to

provide convenience and portability within a working
area where frequent container movement is necessary
or desirable.

P/N – R018-8C00.........XTL8, XT20

P/N – R033-8C00...........XT34

• Liquid Level Measuring Rod – is graduated in both

inches and centimeters. This accessory is inserted
into the cryogenic refrigerant in order to determine the
actual liquid level.

P/M – R033-8C1 1.........all units

• Low Level Alarm – for passive monitoring of refriger-

ant level. This alarm is available for units that may be
used for long-term storage, where an unusually low
liquid level could go unnoticed.

P/N – R033-8C15.........for XT20 and XT34

COMMON P ARTS

Lid (XTL8 XT20, XT34) .............................R033-9C11

Lid Hinge Pin (2 required)..........................6550-1000

Lid Hinge Pin Retainer...............................8956-1013

Handle (XTL3).............................................R005-5C1 1

Handle (XTl8, XT10)..................................R014-5C11

Handle Pin (XTL3, XTL5, XT10) ................8632-5000

RETURNS

Manufacturing defects are covered under the containers
limited warranty . Evidence of mishandling, such as dents
on the outer vessel or misalignment of the inner vessel are

REPLACEMENT P ARTS

Refrigerators XTL3 XTL8 XT10 XT20 XT34

Canister, Single 5. 0 in.
(127 mm)

Canister, Single 11.0 in.
(279 mm)
Necktube Core

R003-9C24 R008-9C24 R013-9C23 R010-9C24 R010-9C24

N/A N/A R013-9C14 R033-9C24 R033-9C24

R003-9C16 R033-9C16 R013-9C16 R033-9C16 R033-9C16

ORDERING INFRMA TION

Order all replacement parts and accessories from your local distributor . Please include the p art and model number, quantity ,
and each part requested. For more information or the name of your local distributor, cont act Taylor-Wharton at the address
listed below.

Taylor-Wharton

4075 Hamilton Blvd.
Theodore, AL 36582

Phone: [phone]

Fax: [phone]

(800) TW TANKS (898-2657)

Email: [e-mail]

www.taylorwharton.com

7950-8345 TW-345