Troubleshooting

Troubleshooting

Cryopumps are highly reliable and designed and manufactured to be capable of continuous operation for a long time. It is necessary to know the trouble diagnosis and the countermeasure and corrective action for the simple trouble which may occur.

If a large number of cryopumps are used, and even one of them stops and could have a severe impact, it is recommended to have a spare unit for safety reasons.

The details of the trouble diagnosis of the cryopump are described in each instruction manual, but this section shows an example of the trouble and corrective actions.
(Notes) If none of the problems can be solved, contact us or a local service center.

■Trouble [1] Cryopump does not pump well.

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■Trouble [2]  Helium pressure decreases.

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■Trouble [3] The cooling time of the cryopump is long. Or the cooling time is longer than before.

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■Trouble [4] Abnormal noise and vibration of the cryopump.

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HOW TO

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