Product Manual - Taylor Wharton
Contents
1. Taylor Wharton Theodore AL 36582 Phone 251 443 8680 Fax 251 443 2250 7950 8349 800 TW TANKS 898 2657 Email cryotanks taylorwharton com www taylorwharton com TW 3492. To thaw the unit pour out the liquid disposing of it out of doors where the cold liquid will not damage driveways and other surfaces Warm the dewar by purging it with a stream of room temperature air Continue purging with air even after the dewar has warmed to room temperature to evaporate any collected mois ture When the dewar 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 instru ments to chip ice permanent damage to the dewar could result DO NOT attempt to fasten any device to the dewar Welding brazing or piercing of the dewar in any manner will cause permanent damage Check liquid levels regularly If high evapora tion rates are apparent under normal operating conditions the dewar may be losing its vacuum Sweating and the formation of frost on the outer casing are indications that the dewar may be losing its vacuum Sweating or freezing of the outside casing are definite indications that the insulation integrity is not normal If these conditions persist contact you supplier or Taylor Wharton s Technical Response Depart ment at 1 800 TW TANKS 898 2657 or email us at cryotanks taylorwharton com for infor mation on how to conduct a normal evaporation rate NER test in the field TRANSPORTATION Although these d
3. Operating Instructions SAFETY Before using any cryogenic dewar read the Handle with Care booklet provided with the unit It details safety precautions that must be under stood before using the equipment If a replace ment booklet is needed order publication TW 10 Handle with Care from your supplier Following are 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 refriger ant 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 of out of these containers Use only the necktube core supplied with this unit or a listed replacement part A tight fitting plug or stopper will cause a pressure increase in the container that may damage the container and or cause personal injury 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 cont
4. acts warm dewar surfaces Add liquid slowly to minimize these effects Be sure there is adequate ventilation Keep your 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 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 bottom of the units After 5 to 10 seconds withdraw the dipstick and wave it back and forth in the air A frosted section will form representing the depth of liquid 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 LD series dewars These values are approximate and are based ona standard conditions Liquid Level Chart Modei J Litersfinch __Liters em__ LD4 0 4 0 16 5LD 0 43 0 17 LD10 0 76 0 3 LD25 1 41 0 56 LD35 LD50 2 67 1 05 Due to the sperical shape of the Classic 25 the linear calculations above will not apply ROUTINE CARE AND MAINTENANCE If ice build up interferes with normal operation of the dewar the unit should be emptied and thawed
5. ewars are rugged they can be damaged if abuse or otherwise mis handled When moving or transporting a dewar take every precaution to prevent tipping bumping or dropping the unit All dewars must be kept upright Dewars containing liquid nitrogen must never be transported in sealed compartments Ventilation must be assured to prevent the displacement of air and the related suffocation hazard DEWAR CONSTRUCTION A cryogenic dewar is really two containers one within the other High technology insulation is used in a sealed vacuum space between the inner and outer containers The integrity of the vacuum is the key to continued performance Liquid Nitrogen Dewars V aa Ly 7 Q All dewars fail eventually The most frequent cause of vacuum failure is abuse The inner container is supported by the necktube which supports the weight of the liquid contents as well A blow to the dewar may cause the necktube to deform or break Any units subjected to physi cal damage may fail more rapidly than one that has been carefully handled ORDERING INFORMATION Order all replacement parts and accessories from your distributor Please include the part and model number of your dewar the part number quantity and description of each part requested For more information or the name of your local distributor contact Taylor Wharton as the ad dress listed RETURNS Manufacturing defects are covered under the dewars limited warrant
6. nd additional handling ease P N D025 8C00 for LD25 only P N D024 8C00 for CLASSIC 25 Liquid Withdrawal Device for convenient pressure transfer of liquid from the LD25 LD30 LD50 dewars Designed specifically for the LD Series Dewars this accessory contains the appropriate relief devices a pressure gauge and a means of refilling the Dewar with the withdrawal device installed P N D050 8C00 i LD25 LD35 or D50 Manufacturing defects are covered under the dewars limited warranty Evidence of mishandling such as dents on the outer vessel or misalignment of the inner vessel are not manufacturing defects If you would like to return good 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 dewar s serial number ready Contact your supplier or call Taylor Wharton s Technical Response at 1 800 TW TANKS 898 2657 or email us at cryotanks taylorwharton com REPLACEMENT PARTS Cap Necktube Core D004 9C11 DO005 9C16 D010 9C16 D024 9C16 D025 9C16 DO050 9C16 DO50 9C16 ORDERING INFORMATION Order all replacement parts and accessories from your distributor Please include the part and model number of your refrigerator the part number quantity and description of each part requested for more information contact Taylor Wharton at the address listed Taylor Wharton 4075 Hamilton Blvd
7. y Evidence of mishandling such as dents on the outer vessel or misalignment of the inner vessel are 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 dewar 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 cryotanks taylorwharton com RETURNS ACCESSORIES The following accessories are available for LD Series dewars Roller Base with ball bearing swivel casters to provide convenience and portability within a working area where frequent container movement is necessary and desirable P N RO33 8C00 for LD35 amp LD50 P N RO18 8C00 for LD25 P N D024 8C02 for CLASSIC 25 Liquid Nitrogen Dipper for dispensing small quanti ties of liquid nitrogen P N RO18 8C50 for LD10 LD25 CLASSIC 25 LD35 and LD50 Liquid Level Measuring Rod that is graduated in both inches and centimeters This accessory is inserted into the cryogenic refrigerant in order to determine the actual liquid level P N RO33 8C 11 for all Dewars Tipping Stand for dispensing liquid from the LD25 This easy to use stand supports the weight of the Dewar and allows convenient safe pouring of liquid Wheels add mobility a
Download Pdf Manuals
Related Search