Sun Power CryoTel Series User manual
CryoTel®Family
Free-Piston Stirling Cryocoolers
OPERATING INSTRUCTIONS
Model: CryoTel®GT
Controller: Gen II v1.0.0
Manual Version: 6
Effective: May, 2012
®
CryoTel® GT User’s Manual Version 6 P a g e | 2
Manufactured by Sunpower, Inc., under the following patents: U.S. Pats 4,583,364; 4,602,174; 4,623,808; 4,649,283; 4,805,408;
4,864,232; 4,866,378; 4,912,409; 4,926,123; 5,003,777; 5,148,066; 5,342,176; 5,385,021; 5,450,521; 5,457,956; 5,461,859;
5,496,153; 5,502,968; 5,525,845; 5,537,820; 5,592,073; 5,642,088; 5,642,622; 5,715,693; 5,749,226; 5,775,273; 5,873,246;
5,941,079; 6,035,637; 6,038,874; 6,170,442; 6,199,381; 6,293,184; 6,446,336 B1; 6,536,326; 6,684,637; RE 38,337; 6,782,700;
U.S. patents pending. Also: Australia Patents 676,805; 677,518; 680,770; 685,997; 701,785; 709,315; 753,580;754032. Brazil PI
950368-5; PI 960 8885-0; PI 9710742-5; PI 9713840-1; PI 9713840-1. Canada patent 2,184,473. EPO 0655120 1B issued in
France, Italy, UK, Netherlands, Sweden and Germany (as DE 69329862.6-08). EPO 0693160 issued in Italy, UK, Netherlands
France, Germany (as DE 69403468 T2); EPO 0754364 1B issued in France, Italy, UK, Netherlands and Germany (as DE
69526217.3-08). EPO 0783618 1B issued in France, Italy, UK, Netherlands and Germany (as DE 69518926.3-08). EPO 0878014
1B issued in France, Italy, UK, Netherlands and Germany (as DE 69611387.2-08). EPO 0885413 1B issued in France, Italy, UK,
Netherlands and Germany (as DE 69627894.4-08). Italy 1297082. UK Patent No. 0,218,682; UK 2,334,307; UK 2,330,651. DBP
No. 0,218,682 (Germany).
India Patents 177477, 178274, 185034; 185035. Republic of Korea patents 0202290; 0292453; 0301548; 0309486; 0320093.
Mexico patents 184451; 194065; 197407; 201368. New Zealand Patents No. 263331; 282959; 319499; 302849; 517329.
Singapore Patent P-No. 48360; 51842; 87422; 87423; 87424. Taiwan patent NI-77875.
Japan Patents
Patents pending in United Kingdom, Germany, Italy, France, Netherlands, Sweden, Brazil, Japan, Republic of Korea, India,
China, Singapore.
Intellectual Property Declaration
Sunpower, the Sunpower graphic identifier, and CryoTel®are trademarks of Sunpower,
Inc. and are registered in the U.S. and other countries. Other products, logos, and
Company
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Contents
I. CryoTel®GT Operating Instructions ..................................................................................................4
II. Precautions (Dos and Don’ts).........................................................................................................5
III. Unpacking.....................................................................................................................................6
IV. Mechanical Mounting ...................................................................................................................7
V. Attachment of Heat Load to Cold Finger ........................................................................................7
VI. Cold End Vacuum..........................................................................................................................8
VII. Feedthroughs...............................................................................................................................9
VIII. Temperature Sensor..................................................................................................................10
IX. Heat Rejection ............................................................................................................................12
X. CryoTel Operation .......................................................................................................................14
XI. LED and Digital Output 4 .............................................................................................................15
XII. Error Summary...........................................................................................................................16
XIII. CryoTel Serial Communications Command Reference ................................................................18
FIGURES
Figure 1: CryoTel®GT and Controller…….……………………………………………4
Figure 2: CryoTel®GT Cryocooler..……………………………………………………..6
Figure 3: Pressure Vessel Mounting Holes………………………………….………7
Figure 4: Weld Flange Holes ……………………………………………………….……..7
Figure 5: Cold Tip ¼”-20 Threaded Hole ..…………………………………….…….8
Figure 6: Power Cable………………………………………...................................9
Figure 7: Rear Pressure Vessel End Plate…………………………………….…….10
Figure 8: Temperature Sensor and Cable……………………………………….….10
Figure 9: Test Cap Assembly…………………………………………………………......11
Figure 10: Controller Temperature Sensor Connector……………….…………12
Figure 11: Water Jacket Heat Rejection…………………………………………….…13
Figure 12: Cooling Fin Heat Rejection……………………………………………….….13
Figure 13: CryoTel®Controller ……………….…………………………………….……..15
Figure 14: Controller LED’s …………………………………………………………………16
Figure 15: Error Codes…………………………………………………………………………16
Figure 15: I/O connector …………...……………………………………………….………18
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Introduction
Sunpower, Inc. is pleased to present this manual with your newly-purchased CryoTel® model cryocooler.
As the world leader in free-piston Stirling cryocooling, Sunpower fully supports its products and is
pleased to hear of any comments or concerns from new or existing clients.
I. CryoTel®GT Operating Instructions
The Sunpower cryocooler is a precision instrument; robust in many ways but fragile in others. This
operating manual provides standard-use instructions and precautions. Please post where technicians
will be working with the unit. Please do not assume that if a warning or instruction is not included here,
a particular test or application of this unit is acceptable. It may not be. If you have any questions about
this unit, or about any tests or applications you intend to perform, please contact Sunpower support
Figure 1: CryoTel®GT and Controller
CryoTel®GT dimensions: length with balancer: 260 mm (10.2 in); length without balancer: 217 mm (8.5 in); diameter:
83 mm (3.3 in);
mass: 3.1 kg
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II. Precautions (Dos and Don’ts)
Although the CryoTel®GT is mechanically robust, it can be damaged if not handled properly when in
operation or when removing from the packaging. The handling and operational Dos and Don’ts are
listed below. Refer to the diagram of the CryoTel®GT in Figure 2.
CRITICAL! –Do not operate the cryocooler without adequate cooling at the heat rejection site.
Overheating the cryocooler will cause permanent damage.
DON’T
Pick up the cryocooler by the cold finger
Set the cryocooler on the cold tip.
Allow the cold finger to be dented. The slightest dent will render the unit inoperable.
Drill holes, or in any other way puncture, or attempt to modify, the pressure vessel.
Operate the unit without proper cooling. Heat must be removed from the copper heat rejection
area of the cryocooler. If the cooler is provided with external cooling fins, air must be forced
over the fins and the flow path should not be obstructed.
Puncture or otherwise damage the copper service tube.
Subject the electrical feedthroughs to mechanical stress; i.e. axial or radial movements, axial
loads, blows, or the like.
Mount the cooler by suspending it from the balance absorber mounting bolt.
Apply clamping pressure to the pressure vessel.
Rigidly attach the absorber stud to “ground.” Instead, let the cooler “float” via a rubber bushing
or other means of articulation.
Remove the protective cover on the cold weld on the end of the copper service tube. Do not
subject the cover to blows.
Control power to the cryocooler by making or breaking the power leads between the controller
and the cryocooler.
Use an external, automatic, closed loop control system which attempts to control the cryocooler
operation by varying the set point settings in the cryocooler controller.
DO
Check with Sunpower before making any modifications to the cryocooler
Note that if the controller is installed in an enclosure, cooling must be provided.
If the cooler is operating in a laboratory test mode with heaters providing the thermal load to
the cold tip, interlocks should be provided so that the heater cannot operate unless the
cryocooler is running. This will prevent accidental overheating of the cold tip.
This manual suits for next models
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