Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Cryomech Manuals
  4. Industrial Equipment
  5. Cryocooler PT410
  6. Installation and operation manual

Cryomech Cryocooler PT410 Installation And Operation Manual

Hide thumbs

Advertisement

Quick Links

Cryocooler
PT410 - CPA289C
INSTALLATION and OPERATION
MANUAL
CP.PT410 - CPA289C(C)

Advertisement

loading
Need help?

Need help?

Do you have a question about the Cryocooler PT410 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Cryomech Cryocooler PT410

Summary of Contents for Cryomech Cryocooler PT410

  • Page 1 Cryocooler PT410 - CPA289C INSTALLATION and OPERATION MANUAL CP.PT410 - CPA289C(C)
  • Page 2 Cryomech, Inc. reserves the right to add, change, modify or delete any or all information contained herein without prior written notice. Revisions to this document may be issued at the time such changes and/or deletions occur.

  • Page 3: Table Of Contents

    Contents Section 1 Overview Section 2 Warranty Section 3 Safety Section 4 Inspection and Unpacking Section 5 Specifications Section 6 Installation Section 7 Operation Section 8 Routine Maintenance CP-2...

  • Page 4: Overview

    Section 1 Overview 1.100(D)
  • Page 5 1.1 Cryocooler system 1.1.1 General description The operation of a Cryomech cryocooler is based on a closed-loop helium expansion cycle. The cryocooler consists of a helium compressor package, cold head, flex lines and cold head motor cord.
  • Page 6 Overview Cold Head Heat Exchanger: The heat exchanger(s) on the cold head provide cooling at cryogenic temperatures by transferring heat to the helium within the system. Cryogenic Temperatures: Temperatures lower than 120 K or -153 °C. Cryocooler: A cryocooler is a cryogenic refrigeration system based upon a closed loop helium expansion cycle.

  • Page 7: Warranty

    Section 2 Warranty 2.100(C)
  • Page 8 The warranty does not cover user-serviceable electronics (such as fuses). If found to be defective and in accordance with the terms of the limited warranty, Cryomech, Inc. will provide warranty replacement parts at no cost to the customer. Cryomech, Inc.
  • Page 9 Operating the cold head in a magnetic field of greater than 500 gauss will void the  warranty. Attempting to disassemble the cold head will void the warranty. Contact Cryomech,  Inc. if the cold head needs to be serviced. See Section 8.

  • Page 10: Safety

    Section 3 Safety 3.100(B)
  • Page 11 Safety and information symbols 3.1.1 Equipment symbols The safety and information symbol stickers placed on Cryomech, Inc. cryocoolers are defined below. Alternating current. The symbol signifies that alternating current is present. Internal ground. This symbol represents an internal protective grounding terminal.
  • Page 12 Section 5.2 Technical specifications CAUTION Operation of the cryocooler in any situation that does not meet the specifications in this section will void the warranty. If you plan to operate the system outside any of the specified conditions, contact Cryomech, Inc. CAUTION The use of DI (De-Ionized) water is prohibited.
  • Page 13 Cryomech, Inc. CAUTION Alterations to the cryocooler are prohibited without prior written authorization from Cryomech, Inc. Modifications without prior written approval will void the warranty. Section 6.1.6 Connect the remote motor assembly’s flex line- Remote Motor Cold Heads Only CAUTION Follow this procedure carefully when connecting and disconnecting the helium flex lines.
  • Page 14 Safety Section 6.2.3 Connect the compressor package to the main power CAUTION The mains supply voltage to the helium compressor package must be within 10% of the nominal voltage specification in Section 5. Operating the helium compressor package outside the voltage specification will void the warranty.
  • Page 15 CAUTION The Pulse Tube style cold heads contain no user-serviceable parts. Attempting to disassemble the cold head will void the warranty. Contact Cryomech, Inc if the cold head needs to be returned for servicing. CAUTION Service to Gifford-McMahon style cold heads must be performed using Cryomech, Inc parts and the appropriate work instructions.
  • Page 16 Safety Section 8.6 Recharge helium to the helium compressor package CAUTION When adding helium to the helium compressor package, the helium must be 99.999% pure. Contamination of the helium by other gases is a common cause of premature failure and is not covered by the warranty.

  • Page 17: Inspection And Unpacking

    Section 4 Inspection and Unpacking 4.100(B)
  • Page 18 Inspection and Unpacking Section 4: Inspection and Unpacking IMPORTANT If there is any visible damage to the packing crates or any components contact Cryomech, Inc. immediately. 4.1 Inspection of crate Be sure to note on the shipping documents any visible damage to the crate, including tip indicators that have been activated.
  • Page 19 4.3.4 Cold head motor cord Inspect the cord for any signs of damage. 4.3.5 Tool kit Cryomech, Inc. systems are shipped with a box of tools. The label on the box lists the contents included inside. 4.3.6 Helium compressor package The helium compressor package should not be tipped more than 5...

  • Page 20: Specifications

    Section 5 Specifications 05.PT410 – CPA289C(B)
  • Page 21 Section 5: Specifications 5.1. Intended use of equipment The Cryomech cryocooler system is used for cooling to cryogenic temperatures. Current clients include research laboratories and universities as well as manufacturers of MRI and NMR superconducting magnets as well as other types of equipment that require cryogenic temperatures.
  • Page 22 Specifications INFORMATION Cooling water temperature and flow rate should fall within the shaded area of Figure 5-1 to maintain optimal performance. Operating outside of the shaded area may result in system entering a warning or error state. Figure 5-1: Cooling water requirement* Figure 5-2: Cooling water pressure drop* *When using a 50-50% mixture of ethylene glycol and water increase the flow rate 10%.
  • Page 23 Operation above 100 F (38 C) will cause overheating and subsequent problems. If a unit must be subjected to either extreme, written authorization from Cryomech, Inc. must be granted. 5.2.5. Safety Devices Several safety devices are located inside the helium compressor package and on the cold head.
  • Page 24 Specifications High-Pressure Atmospheric Relief Valve helium compressor package high-pressure atmospheric relief valve 420 ± 5 psig (29 ± .34 bar). At pressures above 420 psig (29 bar) the relief valve will open automatically and relieve pressure to the atmosphere. Internal Motor Overload Switch An internal motor overload switch, located inside the helium compressor package module, protects the system by sensing excessive current draw and temperature.
  • Page 25 Specifications 5.3. Description of helium compressor package Figure 5-3: Front panel of the water cooled helium compressor package 5.3.1. Front panel interfaces This section describes the function of the interfaces on the CPA289C helium compressor package. 1. Low Pressure Gauge The pressure of the helium gas being returned to the helium compressor package from the cold head.
  • Page 26 Specifications 9. System I/O Port A DB15 female socket that can be used to remotely control the helium compressor package and monitor a limited number of its parameters. 10. Cold Head Motor Connector The electrical connection for the cold head motor cord, from the helium compressor package to the cold head or remote motor assembly.
  • Page 27 Specifications 5.3.2. Control panel description Figure 5-4: Control panel of the helium compressor package 1. Touch Screen Displays system status, warnings, error messages, operation data, system information and allows users to interact with the helium compressor package. 2. Current Draw Displays in amps, the current draw of the system.
  • Page 28 Specifications 8. High and Low Pressures Displays a running average of the suction and discharge pressure. 9. Menu Button Allows navigation to other screens, additional controls, and system information. 10. Operating Temperatures Displays the coolant in and out temperature, helium temperature and oil temperature. 11.
  • Page 29 Specifications 5.3.3. System I/O The digital I/O DB15 female connector is described in this section. Enabling the inputs require a minimum differential of 12 Vdc between the input signal pins and the input reference pin. The input supply voltage range is 20.4 to 28.8 Vdc. Input voltage must drop below 5 Vdc and 1 mA to be disabled.
  • Page 30 Specifications Start (Pin 15) When Start is enabled, the compressor will enter Startup mode then Running mode. If there is an off command coming from any input; Compressor OFF Button, Screen OFF Button, System I/O Stop, System I/O Interlock, Modbus or SMDP stop command, or an error, the system will not start. Outputs Running (Pins 1-2) When the system is in Running mode, and operating properly, the Running relay between pins 1...
  • Page 31 Specifications Figure 5-6: System I/O wiring diagram 5-11...
  • Page 32 Specifications Figure 5-7: System I/O wiring diagram – external supply 5-12...
  • Page 33 Specifications 5.4. Cold head drawing Figure 5-8: Cold Head Drawing 5-13...

  • Page 34: Installation

    Section 6 Installation 6.100(E)
  • Page 35 Scratches or dents will prevent good thermal contact between the heat exchanger and the object(s) attached to it. Please notify Cryomech, Inc. if scratches or dents are observed on any of the above-  mentioned surfaces.
  • Page 36 Installation Inspect the cold head Figure 6-2: Outline drawing of standard cold heads...
  • Page 37 Proper mounting of the sensor(s) on the heat exchanger(s). Proper joining of sensor lead wires and connecting wires. Thermal anchoring of the lead wires to the heat exchanger(s). Please contact Cryomech, Inc. if you have poor performance or need more specific details on installation of the sensors.
  • Page 38 Proper joining of heater lead wires and connecting wires. Thermal anchoring of the lead wires to the heat exchanger(s). Please contact Cryomech, Inc. if you have poor performance or need more specific details on installation of the heaters. Mounting the radiation shield (optional) Clean the radiation shield with isopropyl alcohol.
  • Page 39 Installation CAUTION Follow this procedure carefully when connecting and disconnecting the helium flex lines. Failure to follow the procedure will void the warranty. CAUTION Do not allow the flex lines to contact any corrosives or commercial cleaning agents. Flex line damage caused by exposure to corrosives or commercial cleaning agents will not be covered by the warranty.
  • Page 40 Installation Connect the Aeroquip fittings until a positive stop is felt. The external reservoirs are identical and therefore, interchangeable. A dry Teflon spray lubricant is recommended, See Figure 6-3. Hold this wrench Turn this wrench Figure 6-5: Connecting the external reservoir’s flex line to the cold head 6.2 Compressor installation CAUTION Failure to follow these installation guidelines could result in voiding the warranty.
  • Page 41 Installation Connect the water lines to the helium compressor package CAUTION Cooling water must meet the requirements in Section 5. Introduction of cooling water that does not meet the specifications in Section 5, even for cleaning purposes, it will void the warranty. CAUTION Do not apply heat to the cooling water inlet and outlet connectors located on the front panel of the helium compressor package.
  • Page 42 Installation WARNING One lead of the helium compressor package is grounded. Never bypass this ground or attach the helium compressor package to an ungrounded circuit. A dangerous electrical hazard will develop. Connect the helium flex lines to the helium compressor package and the cold head CAUTION Follow this procedure carefully when connecting and disconnecting the helium flex lines.
  • Page 43 Installation Connect a helium flex line marked LOW to the low pressure port on the helium compressor package front panel. Connect a helium flex line marked HIGH to the high pressure port on the helium compressor package front panel. When attaching the Aeroquip to the mating connector, make sure the threads are in alignment before you tighten the connector.
  • Page 44 Installation Connect the cold head motor cord Connect the cold head motor cord from the helium compressor package to the cold head, making sure both connectors are properly coupled. Remove excess helium from the helium compressor package Turn the circuit breakers on to provide power to the helium compressor package. Navigate through the PLC to find the helium pressure screen.

  • Page 45: Operation

    Section 7 Operation 7.100(C)
  • Page 46 Operation Section 7: Operation 7.1 Starting the system When the installation is complete, make the following checks before starting the system. Carefully follow the steps outlined in this section to ensure proper startup and operation of the system. 7.1.1 Checks before operating The dedicated circuit breaker is switched on.
  • Page 47 7.5 Recommended routine procedures Cryomech, Inc. recommends keeping daily logs of system temperatures and pressures to detect changes in performance. This can include ambient air temperature, in and out cooling water temperatures, helium temperature and, high and low helium pressure fluctuation in performance could signify a problem that requires attention.
  • Page 48 Operation Cryomech, Inc. recommends that you maintain a regular record, at intervals that make sense for the way you use your system, of the high and low pressure readings 7.5.2 Cold head temperature Temperature changes are the other key diagnostic.
  • Page 49 Figure 7-1: Disconnecting flex lines from a helium compressor package IMPORTANT When connecting or disconnecting Aeroquips, Cryomech, Inc recommends using a small amount of dry Teflon spray lubricant. Follow the manufacturer’s instructions for its use. Do not spray lubricant onto sealing surfaces of the Aeroquips, Hand tighten Aeroquips then spray small amount lubricant on the threads of the male Aeroquip.
  • Page 50 Operation Disconnect the Aeroquips on the high and low pressure fittings on the cold head by turning the flexible line’s Aeroquip counterclockwise with one wrench while holding the cold head’s Aeroquip with the other wrench. See Figure 7-3. Hold this wrench to prevent the cold head’s Aeroquip Turn this wrench...
  • Page 51 Operation 7.7 Troubleshooting 7.7.1 Helium compressor package will not start SYMPTOM System will not start. No power supplied to the helium compressor package. POSSIBLE CAUSE Circuit breakers off. Check the power supply to the system and verify that it meets the REMEDY requirements outlined in Section 5.
  • Page 52 Operation 7.7.4 Run time display screen description Run time messages are displayed on the main display screen. The number of hours the system has operated is displayed in the bottom right hand corner. Top line message on the Message description display screen Front panel or remote interface turned off helium “Idling..”...
  • Page 53 The order of the phase power is wrong. Re wire the input to the “3 Phase Power Improperly helium compressor package by switching any 2 of the 3 input power Wired!” wires. Power supply has exhibited a fault, verify voltage output or contact "Power Supply Error!" Cryomech, Inc.
  • Page 54 Operation 7.7.6 Warning diagnostics on display screen Warnings do not cause the helium compressor package to stop and do not prevent the helium compressor package from starting. If more than one of the warnings below is present, only the highest priority one will be displayed.
  • Page 55 Operation Warning Description Explanation Helium discharge temperature approaching high error set point; check cooling water temperatures, may also be caused by low “Helium Temp Running High!” oil level check compressor module sight glasses or low oil temperature caused by cool water Oil temperature approaching high error set point;...
  • Page 56 Operation Lock Out Error Message Trip Clear Contributor? >6 errors (lock out “You have had 6 errors in less 30 minute delay, contributors) in <1 than an hour: MM:SS” manual restart hour “3 Phase Power Improperly Phase sequence Phase sequence Wired!”...
  • Page 57 Operation 7.7.8 Contact Information Cryomech, Inc. 6682 Moore Road Syracuse, NY 13211 Phone: (315) 455-2555 Fax: (315) 455-2544 Email: support@cryomech.com Website: www.cryomech.com 7-12...

  • Page 58: Routine Maintenance

    Section 8 Routine Maintenance 8.100(C)
  • Page 59 8.3 Cold head CAUTION The Pulse Tube style cold heads contain no user-serviceable parts. Attempting to disassemble the cold head will void the warranty. Contact Cryomech, Inc. if the cold head needs to be returned for servicing. CAUTION Service to Gifford-McMahon style cold heads must be performed using Cryomech, Inc. parts and the appropriate work instructions.
  • Page 60 Routine Maintenance Required tools CP2800 Quantity Description Comment 1 in open end wrench For Aeroquip coupling 1-1/8 in open end wrench For Aeroquip coupling 1-3/16 in open end wrench For Aeroquip coupling 1-5/8 in open end wrench For Aeroquip nut Slotted screwdriver For hose clamps Slotted screwdriver...
  • Page 61 Remove the adsorber from the helium compressor package. Check the Aeroquip couplings for oil residue. a. If oil is present, contact Cryomech, Inc. for further assistance. Remove the lock washer from the top Aeroquip on CP2800 and CP1100 helium compressor packages.
  • Page 62 Routine Maintenance Slowly open the service valve. Do not vent more than 5 psig (0.34 bar) of helium per minute.  Close the service valve. Remove the service Aeroquip from the service access port. 8.6 Recharge helium to the helium compressor package Required tools and equipment: Quantity Description...
  • Page 63 Routine Maintenance Helium Helium Tank Line Valve Vacuum High Pressure Manifold Regulator Charging 99.999% Lines Helium Vacuum 3.0-7.0 SCFM Vacuum Pump Gauge Figure 8-3: Vacuum/charging system Line to Helium Vent Tank Valve Vacuum Sending Unit Relief Valve Vacuum Valve Charging Service Aeroquips Lines...
  • Page 64 Aeroquip couplings. If an Aeroquip coupling needs cleaning: Blow off the coupling with clean, dry compressed air.  Solvents should never be used.  If any grease or oil gets on the Aeroquip coupling, contact Cryomech, Inc.

This manual is also suitable for:

Cpa289c
Save PDF