CTI-CRYOGENICS
HELIX TECHNOLOGY CORPORATION
•
Section 5
Troubleshooting
5.1 Troubleshooting the
Cold Head
Most of the problems in the troubleshooting tables are
followed by several possible causes and corrective
actions. The causes and corresponding actions are listed
in their order or probability of occurrence. 1) is most
likely, 2) is next most likely, etc.
Maintaining a log of the readings (see Appendix A,
Figure A.1) of the temperature indicator during normal
operation is a valuable tool in troubleshooting the cold
head. Values higher than 20K indicate that the second-
stage cold station is too warm. A temperature below
20K means the cold head is cold enough for operation.
5.2 Technical Inquiries
Please refer to page ii of this manual for a complete
list of the CTI-CRYOGENICS' world wide customer
support centers.
P/N 840272
5-1
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