Ulvac CRYOPUMP CRYO-U Series Instruction Manual page 24

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11. Contact

immediately

when

the

self-sealing coupling is loosened.

When working with a self-sealing coupling, the connection may be accidentally loosened or

loosened by co-rotation. In such cases, the refrigerator may encounter faults due to

helium leakage or air invasion, resulting in serious failure such as abnormal noise or

refrigerator motor malfunction.

At the time of shipment of our products, we conduct the inspection to ensure the

connection of self-sealing coupling is appropriate and paste a sealing sticker. The sealing

stickers are added to our refrigerators, compressor units, flexible hoses, branch pipes and

straight pipe units.

out of warranty if it occurs while the sealing sticker is not in the original state.

Sealing sticker

Figure 4 Examples of the sealing stickers

S-12

ULVAC CRYOGENICS INCORPORATED

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Cryopump cryo-u 10hsp