Hi, All,
The Evaporator was down in the weekend of Aug 31 due to the CTI 8200 compressor failure. We tried to purchase a new CTI compressor, but the lead time is 8 weeks that is too long. We contacted several compressor vendors asking for the quotes for a new compressor and/or refurbished one. Finally we decided to purchase a M125 compressor from Trillium. The order was placed on today, 9/11.
We found that the cryopump has an issue with He decontamination and needs to be replaced. The order for a new pump is placed on Oct. 1 and will arrive in a few days.
The new compressor will arrive on Oct. 2.
Users could expect that the Evaporator will be up running in the earlier next week, 7th of Oct.
The new compressor and cryopump were installed. The system was regenerated successfully. The Evaporator was up running on Oct. 11th, Friday.
Feel free to let me know if you have questions.
Thanks,
Qiyin
Hi, All,
We had received the first cryopump from Angstrom and compressor from Jenis by Oct. 4, Friday afternoon. We installed them on the evaporator on. We regenerated pump and got it run. But we found the cryopump temperature(18K)was not ideal. We suspected that this was due to the damage on the part around cold head during shipping. We requested the Angstrom to ship us another pump for replacement.
We received the 2nd pump on Oct.9, Wed, installed on the same day, and completed the regeneration in the morning of Oct 10, Thursday. It seems that the pump is running well and the evaporator chamber vacuum is good! This is good new. We are doing a final test now and will make announcement to users about the status soon!
Thanks,
Qiyin