Support > White Papers > Cryo Remanufacturing Improvements May 2014

Cryo Remanufacturing Improvements May 2014

Overview

  • PTB Dedicated Cryopump and Compressor remanufacturing facility established in 2011
  • Designed to remanufacture 15 pumps/day with one shift
  • Combined both historical proven practices as well as over 15 years of OEM experience
  • The only facility globally that truly remanufactures cryopumps
  • The only independent repair service company that can truly repair the IS family of pumps

Vacuum Integrity

  • Radiation Shield: Proprietary process for applying and curing flat black paint implemented
  • 15K Arrays: Automated remanufacturing controls to ensure consistent epoxy application for adhering the charcoal
  • Results:
  • 42% reduction in time to reach base pressure of 50 microns
  • 25% reduction in cycles to reach ROR of 10 microns/minute

Refrigerator Performance

  • Expander: Proprietary process for cleaning and rebuilding 1st and 2nd Stage displacers
  • Valve Timing: Automated test system developed to ensure inlet and exhaust valves are perfectly timed
  • Refrigerator Test: Proprietary refrigerator heat load test implemented – more thorough than the OEM
  • Results:
  • All refrigerators perform to OEM specs consistently
  • Refrigerators testing to meet or exceed process performance requirements
  • Extended lifetime of refrigerators

Packaging

  • “Best in Class”:
  • Conforms to ASTM D6198 – 12 Standard Guide for Transport Packaging Design
  • Conforms to ASTM D5276 - 98(2009) Standard Test Method for Drop Test of Loaded Containers by Free Fall
  • Additional Ergonomic factors implemented

Summary

  • Q2-Q3 of 2013
  • Enhancements to the manufacturing process for the Radiation Shield and 15K Array resulted in a reduction of 42% for time-to-reach a base pressure of 50 microns and a 25% reduction in the number of ROR cycles to reach a 10 micron/minute value.
  • Q2 of 2013
  • Universal packaging that is ergonomic friendly ensures that the high quality refurbished cryopump will be delivered to your faculty with no cosmetic defects and 100% operational.
  • Q4 of 2013
  • GM refrigerator process improvements and testing ensures that the product will perform to the OEM specifications and meet or exceed all process requirements for vacuum performance as well as extend the lifetime of the refrigerator.