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Regeneration Troubleshooting

Aborted On-Board® Regeneration Troubleshooting

Background

Customers on occasion experience aborted regenerations. This paper will explain the logic flow of a full regeneration and possible causes to correct the aborted regeneration.

REGEN ABORT – Warm-Up Time Out - (The pump failed to reach 310K (PVD) or 330K Implant) in the allotted time)
Possible Causes:

  • Low or insufficient purge gas
  • Heater failure
  • Sensing diode failure
  • Module failure

REGEN ABORT – Poor Rough Vacuum – (The pump did not register a decrease in pressure in the allotted time)
Possible Causes:

  • Perform a Vacuum Leak Check (isolate cryopump)
  • Verify rough pump integrity

REGEN ABORT – Exceeded ROR Limit – (The pump performed the number of programmed ROR tests)
Possible Causes:

  • ROR Limit is too low – Increase ROR Limit
  • Increase Extended Purge Time
  • Increase Purge Gas Flow
  • Faulty TC Gauge
  • Perform a Vacuum Leak Check (isolate cryopump)

REGEN ABORT – Cooldown Time Out – (The pump failed to cool within the allotted time)
Possible Causes:

  • Verify proper vacuum level
  • Verify proper compressor operation (Supply/Return Pressure)
  • Verify Flexline connections
  • Is ice forming on the vessel? This can be caused by a small vacuum leak (10-8; 10-9) scale


Figure 1 ? Full Regeneration Logic Flow
If technical assistance is required, please contact our Customer Service Representative.

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