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Magnet Vessel Pressure is High due to Compressor Cycling.LCC300 Alarm HE Vessel Pressure High.SecondOpinion Part Number…

Magnet Vessel Pressure is High due to Compressor Cycling.LCC300 Alarm HE Vessel Pressure High.SecondOpinion Part Number 2188440-2 Sumitomo CSW Series 4K and 10K Compressor.Magnet LCC 300.

Symptom

LCC300 Alarm HE Vessel Pressure High. LCC300 Alarm HE Vessel Pressure High, the Helium Vessel Pressure is higher than the upper alarm limit setting on the SHeM.

Error message

LCC300 Alarm HE Vessel Pressure High. LCC300 Alarm HE Vessel Pressure High, the Helium Vessel Pressure is higher than the upper alarm limit setting on the SHeM.

Applies to

Product
Magnet LCC 300. Software Version Concept should NOT be selected for Magnet Products Low Cryogen Consumption Serial number:Wxxx Field strength: 3.0 T He Vessel Pressure:>3 psig but <5 psig Shield Temp:< 55 Kelvin Coldhead Temp:> 3.8K but < 4.5K Recondenser Temp:> 4.2K but < 4.55K Delta Temp (Coldhead - Recondensor):> 0 but < 0.3K Min. LHe Fill Level: 60% Min. LHe Ramp Level: 100% Min. LHe Shim Level: 80% Helium Volume:1735 Liters Burst Disk:2349529 Burst Disk O-ring:46-281101P1 Baffle Assy: 2180818 Shim Lead Large 5/8:2173354
Component
SecondOpinion Part Number 2188440-2 Sumitomo CSW Series 4K and 10K Compressor. The Sumitomo 4K and 10K Compressor is the same Unit. Sumitomo compressor 2188440-2 is the same for both 10K and 4K Sumitomo cryo-cooler systems. See Long Description for FEMC Comments and Resolution concept for Second Opinion requirements before ordering this part. See comments in Resolution concept for Second Opinion requirements before ordering this part. FEMC Comments: FLS - COMPRESSOR USED ON SHI 10K SYSTEM REPLACES 2188440 PER PCN 188657. COMPLETELY INTERCHANGEABLE AND BOTH CAN BE COMBINED IN THE SAME POOL PER G. BUTLER 2-14-00, A. MASCH FOR GREEN SOURCE DIRECTLY FROMSUMITOMO JAPAN +++ For hour meter issues please order - 2191112-8. +++ *** 2ND OPINION NOTES *** This part has been identified as one requiring second opinion approval before ordering due to one or more of the following reasons: High cost. For approval: Americas - Contact: OnLine Center or your ZSE Europe - OnLine Center or your ZSE Asia - Contact the OnLine Center or your Technical Support. 212002950 April 28, 2008.
Area
MR

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