Thermo Scientific Cryo 740 Series Operating And Maintenance Manual Download Page 26 | Manualshive

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7000740r7 Cryo Series 3-3

Thermo Scientific

Section 3

Maintenance

When defrosting the storage tank, remove the LN

2

from the tank and

remove the product. Allow the tank to warm at room temperature.

Caution

Do not attempt to speed LN

2

evaporation, or frost removal, by

applying direct heat. Avoid using a heater or blowing compressed air into
storage tank.

▲

Defrosting the

Storage Tank

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Summary of Contents for Cryo 740 Series

Page 1: ...Model 740 Series Cryo Series Liquid Nitrogen Storage System Operating and Maintenance Manual 7000740 Rev 8 ...

Page 2: ...ations ccs 6 10 29 04 Updated manual fill LED information ccs 5 22025 SI 9266 7 29 04 Added caution to sensor height adjustments ccs 4 2043 FR 1620 6 17 02 Added lid strap info Section 1 4 ccs 3 16746 SI 8022 10 16 00 Software change on cryo controller board FR740 05 aks 2 19496 FR 1440 9 7 00 Revise power cord attachment instructions ccs 1 18966 FR 1362 3 8 00 Chg probe removal procedure ccs REV ...

Page 3: ... must be performed by qualified service personnel Material in this manual is for information purposes only The contents and the product it describes are subject to change without notice Thermo Scientific makes no representations or warranties with respect to this manual In no event shall Thermo be held liable for any damages direct or incidental arising out of or related to the use of this manual ...

Page 4: ...nt falling under the Directive 2002 96 EC WEEE and the equipment that has been put on the market after 13 August 2005 This product is required to comply with the European Union s Waste Electrical Electronic Equipment WEEE Directive 2002 96 EC It is marked with the WEEE symbol Thermo Scientific has contracted with one or more recycling disposal companies in each EU Member State European Country and...

Page 5: ...for spare or replacement parts or provide you with on site service We can also provide you with a quotation on our Extended Warranty for your Thermo Scientific products Whatever Thermo Scientific products you need or use we will be happy to discuss your applications If you are experiencing technical problems working together we will help you locate the problem and chances are correct it yourself o...

Page 6: ...tall Optional Temperature Sleeve 1 4 Fill Unit 1 5 Remote Alarm Contacts 1 5 Tank Switcher Plug In 1 6 Installation Validation 1 6 Operation 2 1 Liquid Level Controller 2 2 High and Low Level Sensors Adjustments 2 3 Gas Bypass Control System 2 4 Power Switch and Power Indicator 2 5 Solenoid Switch and Indicator 2 5 Maintenance 3 1 General Cleaning 3 2 Defrosting the Storage Tank 3 3 Section 1 Sect...

Page 7: ... Level Check Dip Stick 4 2 Control Board Fuses 4 2 Specifications 5 1 Parts List 6 1 Accessory List 6 2 Exceptions 6 3 Electrical Schematics 7 1 Warranty Information 8 1 Handling Liquid Nitrogen 9 1 Introduction 9 1 First Aid 9 4 Table of Contents Section 4 Section 5 Section 6 Section 8 Section 7 Appendix ...

Page 8: ...feet are included on Model 740 741 This unit is designed to operate in the following environmental conditions Temperature 5 C 41 F to 40 C 104 F Humidity 80 at 31 C decreasing linearly to 50 at 40 C Altitude 2 000 meters 6 650 feet Warning Whenever working with liquid nitrogen storage equipment in a closed environment the use of personal O2 detection devices is strongly recommended Refer to Handli...

Page 9: ... system requires a user supplied low pressure regulated 22 PSIG liquid Nitrogen supply Anything higher than 22 PSI will degrade performance of the Cryo storage container Connect the transfer hose between the low pressure liquid outlet of the liquid Nitrogen supply tank 22 PSIG and the input flare fitting connected to the solenoid valve at the back of the unit Use an adjustable wrench to tighten th...

Page 10: ... to mute audible alarm Control Panel No more than 6 ft in distance No sealer Supply 22 PSI Liquid side Open valve after both ends of the transfer hose are connected No sealer Storage Platform optional Vent Do not block ALARMS High Level Low Level Silence Fill Valve Open Power Manual Fill Press to fill manually Power Indicator ...

Page 11: ...he power switch turned OFF connect the unit to a grounded electrical outlet See the tag on the back of the unit or the electrical schematics included in this manual for voltage and full load amps The power switch on the back of the unit is the mains disconnect and is also a reset type circuit breaker If an overload condition occurs the built in circuit breaker will trip and the power switch will t...

Page 12: ...por phase setting of 3 5 inches of liquid the temperature under the lid will remain below 130 C When properly installed the ends of the sleeve must be aligned with the temperature probe at the rear of the tank and the square holes in the bottom of the sleeve aligned with the fill and pressure ports It is imperative that the positioning of the sleeve not block either the fill or liquid level tube o...

Page 13: ...s not reached in one hour the low level shutdown alarm activates See Section 2 After the initial fill is complete close the lid and allow the unit to stabilize for 8 to 10 hours or overnight before changing the high or low level setpoints or adding inventory Caution Some popping or cracking noises may be heard after the unit is initially filled and the lid is opened and closed the first few times ...

Page 14: ...mote alarm turn the unit on wait a few seconds then turn the unit off The remote alarm will activate immedi ately upon loss of AC power Manual Fill The Manual Fill button is pressed and released to manually fill the tank to the high level set point The Fill indicator lights when active The unit can be filled past the high level set point by holding down the Manual Fill button Dip Level Test Note F...

Page 15: ...2 Pull the probe sets toward the top of the tube until resistance is felt 3 Power up the unit with the sensors out of the LN2 The solenoid valve LED will light Caution When the probes are near the top of the sensor tube and resistance is felt it may be necessary to wait a few minutes to allow the probes to warm up before removing them completely 4 The Low Level alarm LED and the audible alarm acti...

Page 16: ...g the Low Level sensor submerged The solenoid LED will go out 10 The High Level alarm LED remote alarm contacts and audible alarm will activate in about 2 minutes 11 Replace the probes and adjust if necessary Refer to the instructions in Section 2 of this manual Alarm and LED Test continued Figure 1 6 Alarms and LED Test ...

Page 17: ......

Page 18: ... the corresponding High or Low Level alarm indicator on the controller panel lights The audible alarm may be disabled by pressing the Silence button However the warning light and Alarm indicators remain lit and audible alarm sounds every 30 minutes until the alarm condition is corrected Note Low level shut down and open level probe alarms can not be silenced After the alarm condition is corrected ...

Page 19: ...lowing occurs high level LED off audible alarm cycle on and off all valves close and remote alarm contacts activate To clear this alarm after the alarm condition is corrected the unit power switch must be turned off then on The high level alarm signals an overfill condition and is activated when liquid nitrogen touches the high level alarm sensor and remains there for at least two minutes The Sile...

Page 20: ...rocedures are used to change the high and low level sensor settings Refer to illustration above 1 Open the lid and remove the access panel cover on the right rear of the cabinet 2 Slide clamp off of the sensor wires 3 The double tie wrap on the sensor wires are the 3 inch low level and the 5 inch high level settings Caution Allow probe to warm up for 30 minutes before removing from tube Pulling pr...

Page 21: ...cally bypass the storage tank and be vented to the atmosphere during the fill cycle At the start of the fill cycle the sensor detects warmer nitrogen vapor in the fill line coming from LN2 supply source The sensor causes the fill solenoid to temporarily close which causes the warm gas to bypass the fill system and be vented to the atmosphere through the vent valve This prevents warm gas from enter...

Page 22: ...sed electric solenoid valve The solenoid valve is mounted inside of cabinet with access panel provided Manual Fill button activates the solenoid valve when the liquid level is greater than one inch below the high level sensor and will fill until the high level sensor is submerged in liquid nitrogen If a higher level is desired the Manual Fill button must be held down until that level is reached Th...

Page 23: ......

Page 24: ...f all solenoid valves s is desirable The time between cleanings will vary depending upon media and service condi tions Generally if the voltage to the coil is correct sluggish valve opera tion excessive noise or leakage will indicate that cleaning is required Valve Disassembly And Reassembly De pressurize valve and turn OFF electrical power supply Proceed in the following manner 1 Remove retaining...

Page 25: ...cedures Allow the interior of the unit to warm to ambient and use an appropriate germicide Freezing chamber The interior of the CryoPlus unit is made of high quality stainless steel and should not be cleaned with any cleanser containing chlorine Exterior Cabinet Wash the outside of the cabinet with a mild detergent Figure 4 1 Exploded View of Valve Housing Spring Washer Coil Solenoid Base Sub asse...

Page 26: ...torage tank remove the LN2 from the tank and remove the product Allow the tank to warm at room temperature Caution Do not attempt to speed LN2 evaporation or frost removal by applying direct heat Avoid using a heater or blowing compressed air into storage tank Defrosting the Storage Tank ...

Page 27: ......

Page 28: ...k empty or shut off valve closed Replace supply tank Open shut off valve Liquid not being delivered to tank Defective solenoid valve LN2 pressure too low below 10 psi Repair or replace solenoid valve Controller continually overfills solenoid LED is on Defective cryo control board Defective liquid level probe assembly Replace cryo control board Replace liquid level probe assembly Low level shut dow...

Page 29: ...er the ruler along the edge of the tank until it is at the bottom Take subsequent measurements lowering the ruler at this same location When the LN2 stops boiling pull out the ruler The actual liquid level will be approximately one inch lower than the frost line on the ruler Caution Some shrinkage of the ruler may occur depending on the level of liquid nitrogen in the tank Two 63mA Slo Blow fuses ...

Page 30: ...FLA Operating Range 180 253V Utility Connections 1 2 45 Flare 1 2 45 Flare 1 2 45 Flare 1 2 45 Flare 4 foot hose 6 foot hose 6 foot hose 6 foot hose Weight Empty 194 0 lbs 88 0 kg 325 0 lbs 147 4 kg 416 0 lbs 188 7 kg 680 0 lbs 308 4 kg Weight Full 354 0 lbs 160 6 kg 680 0 lbs 308 4 kg 1021 0 lbs 463 1 kg 1620 0 lbs 734 8 kg Shipping Weight 260 0 lbs 117 9 kg 400 0 lbs 181 4 kg 540 0 lbs 244 9 kg ...

Page 31: ......

Page 32: ...046 Lid pneumatic spring 2 3 190551 Cryo control board 1 1 1 1 195006 Ribbon cable control board to display 1 1 1 1 195011 Cryo main wiring harness 1 1 1 1 195009 Cryo liquid level probe 1 1 1 1 195024 120V valve assy 740 742 744 746 1 1 1 1 195025 220V valve assy 741 743 745 747 1 1 1 1 251004 Pressure relief valve 1 4 MPT 1 1 1 1 990027 Magnetic lid gasket 1 990028 Magnetic lid gasket 1 990029 M...

Page 33: ...0 only 4000103 Jumbo Inventory Rack Kit 8 2 SS 4000104 Jumbo Inventory Rack 8 3 C Model 740 only 4000108 Jumbo Inventory Rack 10 2 C Model 740 only 4000144 Inventory Control Rack 13 2 C 4000324 Delmed 2030 2 Slide Canister 4000332 Gambro DF 200 Slide Canister 4000333 Gambro DF 700 Slide Canister 4000335 Fenwal 4R5461 Slide Canister 4000336 Fenwal 4R5462 Slide Canister 4000348 Delmed 2030 2 Swing A...

Page 34: ...I 195064 Internal Temperature Sleeve 195701 Bypass Assembly Kit 230V QI 201280 Recorder Kit 220V FI 4000003 Inventory Rack 7 3 CW 4000004 Inventory Rack 7 3 SS 4000060 Platform Riser 3 1 2 x20 4000061 Platform Riser 5 x20 4000062 Platform Riser 4 x20 4000075 Fenwal 4R5461 Platform Divided 4000076 Fenwal 4R5462 Platform Divided 4000078 Gambro DF200 Platform Divided 4000079 Gambro DF700 Platform Div...

Page 35: ...rm Divided 4000063 Platform Riser 3 1 2x31 4000064 Platform Riser 5x31 4000065 Platform Riser 4x31 4000631 Fenwal 4R9951 Platform Dividers Model 746 195066 Internal Temperature Sleeve 4000052 Gambro 200 Platform Dividers 4000053 Fenwal 4R5461 Platform Dividers 4000054 Fenwal 4R5462 Platform Dividers 4000639 Fenwal 4R9951 Platform Dividers Model 747 195023 Bypass Assembly Kit 230V FI 195066 Interna...

Page 36: ... 7402 7403 Cryo 200 Model 742 743 Cryo Plus 3 Model 7404 7405 Cryo 300 Model 744 745 Cryo Plus 4 Model 7406 7407 Cryo 400 Model 746 747 Standard Inventory Vertical Inventory Arrowhead Square Sliding canister 4000335 for 4R9953 bag 4 place frame 4000371 for 250ml canister Platform divider for frames 4000371 and 25ml canisters 4000335 ...

Page 37: ... 13 2 C 100 2ml CV 4 2 C 100 CV 5 2 C 100 Cryo 300 7 3 C 100 4ml 8 3 C 100 4ml 31 Dia 6 3 75 C 100 5ml 7 3 75 C 100 5ml System 17 Racks System 50 Racks CryoPlus 4 11 2 C 100 2ml 13 2 C 100 2ml CV 4 2 C 100 CV 5 2 C 100 Cryo 400 7 3 C 100 4ml 8 3 C 100 4ml 39 5 Dia 6 3 75 C 100 5ml 7 3 75 C 100 5ml System 31 Racks System 82 Racks Description 5 3 75 C 81 5ml 4000092 6 3 75 C 100 5ml 4000005 CV 4 2 C...

Page 38: ...place CryoPlus 4 Cryo 400 39 5 Dia 792 198 4 place 624 156 4 place 432 108 4 place 312 78 4 place 564 188 3 place Description Slide Canister 4000335 Slide Canister 4000336 Slide Canister 4000332 Slide Canister 4000333 Slide Canister 4000324 Part No Swing 4000356 Swing 4000357 Swing 4000348 Frame OAH 22 9 4000371 Frame OAH 23 1 4000372 Frame OAH 26 1 4000368 Frame OAH 23 4000369 Frame 4000364 Platf...

Page 39: ......

Page 40: ...7000740r7 Cryo Series 7 1 Thermo Scientific Section 7 Electrical Schematics ...

Page 41: ...7 2 7000740r7 Cryo Series Thermo Scientific Section 7 Electrical Schematics ...

Page 42: ...7000740r7 Cryo Series 7 3 Thermo Scientific Section 7 Electrical Schematics ...

Page 43: ...7 4 7000740r7 Cryo Series Thermo Scientific Section 7 Electrical Schematics ...

Page 44: ...arranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER W...

Page 45: ... of components parts or equipment under this warranty shall not extend the warranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destinat...

Page 46: ...glasses without side shields do not give adequate protection Always wear gloves when handling anything that is or may have been in immediate contact with liquid nitrogen Insulated gloves are recommended but heavy leather gloves may also be used The gloves should fit loosely so that they can be thrown off quickly if liquid should splash into them When handling liquid in open containers it is advisa...

Page 47: ... Warning Do not cover or plug the entrance opening of any liquid nitrogen refrigerator or dewar Do not use any stopper or other device that would interfere with venting of gas These cryogenic liquid containers are generally designed to operate with little or no internal pressure Inadequate venting can result in excessive gas pressure which could damage or burst the container Use only the loose fit...

Page 48: ...ounts of nitrogen gas reduce the concentration of oxygen and can result in asphyxiation Because nitrogen gas is colorless odorless and tasteless it cannot be detected by the human senses and will be breathed as if it were air Breathing an atmosphere that contains less than 18 oxygen can cause dizziness and quickly result in unconsciousness and death Note The cloudy vapor that appears when liquid n...

Page 49: ...osed to liquid or cold gas restore tissue to normal body temperature 98 6 F as rapidly as possible followed by protection of the injured tissue from further damage and infection Remove or loosen clothing that may constrict blood circulation to the frozen area Call a physician Rapid warming of the affected part is best achieved by using water at 108 F Under no circumstance should the water be over ...

Page 50: ...7000740r7 Cryo Series 10 1 Thermo Scientific ...

Page 51: ......

Page 52: ...Thermo Scientific Controlled Environment Equipment 401 Millcreek Road Marietta Ohio 45750 United States www thermo com ...

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