IDP3 scroll pump

Hi, 

I had a maintenance task to perform on a 3-4 years IDP3 scroll pump connected to a single quad GC-MS. 

I saw in the history that the first seal replacement was performed around 19 000 hours instead of the 9000 hours suggested by Agilent. 

The 2nd seal replacement was done by me at 32500 hours, so again it's more than 9000 hours. 

I saw a lot of solid and the filter was dirty. 

What will be the consequence of doing maintenance at that frequency? 

Is it normal to hear a noise a bit stronger during the pumpdown after seal maintenance? 

thank you. 

  • Tipseal wear residue, the metal inside, and the particulate filter are all covered with your sample so use proper safety precautions.

    At some point as the tip seal material wears the pumping efficiency slowly decreases. The recommended tipseal replacement time is safest to avoid possible pumping speed problems that will affect your data. The exhaust filter/sound suppressor is designed to catch the residue.

    Clean the groves and interior of both the Outboard Housing and the Orbital Plate with a Kim Wipe or equivalent, lint free cotton swab or equivalent, Scotch-Brite as required and isopropyl alcohol (use if necessary or desired: not included) to remove tip seal debris.  If in a cleanroom environment, do not use compressed air or canned air to remove tip seal dust from the interior of the pump. Do not use water, detergent, or home/industrial cleaning products.  (see: Tip Seal Replacement Procedure for IDP-3 Pump.pdf )

    Make sure to leave enough expansion room at the end as shown.

    Yes, the sound is louder for a few hours as the replacement tipseals wear in.  Since you just performed the maintenance now, it should be done again around the US Thanksgiving holiday 2025.

  • Thank you very much for your information. The IDP-3 make a louder sound at the start, after an hour, everything is fine. 

    When I clean the pumps heads, it has a lot of solid. I cleaned it well with IPA and white lint free tissue used for the MS source cleaning procedure. 

    But I did see some wear at the top of one pump head? 

    Is it normal wear or it's because we didn't respect the 9000 hours maintenance frequency asked by Agilent. 

    The heat of the pump is normal I would say. The vacuum is very good too. 

    thank you again for your helpl

  • It is difficult to tell as those pictures are not close up and in focus. There does not appear to be any broken metal, so it's probably fine.  

    Glad you're happy with it!

  • Yes it's like a wear but I don't know if it's normal. It's still mechanical scroll twist. 

    I tried to increase the zoom here. The pump has around 4 years of usage. 

    You can see darker wear on the top of the head. 

    But like a said, the vacuum is super good and the heat is normal. And I also read that the pump is equipped with a heat sensor that will prevent any futher damage by stopping the pump if the heat is too high. 

    thank you again for your help. 

  • The electronic zoomed in doesn't improve the resolution enough to tell. Take closeups next tip seal change!  Nearly all GCMS level pumps have overtemp protection. 

    Glad it's working.

  • OK I will next time I replaced the tip seal Again. So far, the IDP3 pump is doing just fine. 

    Thank you again for your precious help and response. 

    ;-) 

Was this helpful?