GE Healthcare · MR
Elevated vessel pressure due to degraded cold head performance. hfoi2 HePressure Limit.
Symptom
hfoi2 alarm I2 HePressure Limit. hfoi2 alarm I2 HePressure Limit, the Helium vessel Pressure has exceeded the high alarm limit setting on the Magnet Monitor 3.
Error message
hfoi2 alarm I2 HePressure Limit. hfoi2 alarm I2 HePressure Limit, the Helium vessel Pressure has exceeded the high alarm limit setting on the Magnet Monitor 3.
Applies to
- Product
- Magnet HFO. Software Version Concept should NOT be selected for Magnet Products Serial # (Txxx) Field strength: 0.7 T He Vessel Pressure >0.9 psig but <6.25 psig Shield Temp for Cryo-cooler coldhead < 40 K Temp for Shield-cooler Coldhead < 35 K Cryocooler 2nd stage Temp > 3.8K but < 4.5K Recondenser Temp > 4.2K but < 4.6K Delta Temp (Coldhead - Recondensor) < 0 but < 0.3K Min. LHe Fill Level 75% of total vessel Min. LHe Ramp Level 100% Helium Volume 340 Liters Burst Disk 2253802-2 Baffle Assy 2226764
- Component
- SecondOpinion Part Number 2194003-2 Sumitomo Cold Head and Gasket Kit. See comments in resolution concept for second opinion requirements before ordering this part. See comments in resolution concept for second opinion requirements before ordering this part. Second Opinion Part Number 2244334 SINGLE STAGE CONFIGURED COLD HEAD. Second Opinion Part Number 2244334 COLDHEAD, SINGLE STAGE CONFIGURED. Used exclusively on HFO (OpenSpeed) 0.7T Magnets. See comments in resolution concept for second opinion requirements before ordering this part. Second Opinion Part Number 2244334 COLDHEAD, SINGLE STAGE CONFIGURED. Used exclusively on HFO (OpenSpeed) 0.7T Magnets. See comments in resolution concept for second opinion requirements before ordering this part.
- Area
- MR
Full cause & step-by-step resolution
The complete cause analysis, the step-by-step remedy and the attached service documents for this GE Healthcare MR issue are available to FSELIB subscribers — re-authored, web-first, searchable.
7-day free trial · no credit card required
Related GE Healthcare MR issues
- Running grafidy3, and find there are spikes on the waveforms in the manual prescan display, both windows.
- OrthoMRI Network cable is unplugged
- TPS/MGD fails to download or reset. mgd_term windows fail to mount file system.
- CWA ID100060 Unable To Film.
- Fails to Scan with TORSO Coil.
- The Carriage Fails to Advance to Latch to the Table and to Retract When it is Raised, Undocked or Lowered.