Watson Marlow 620 / 630 Pump Head Troubleshooting

[@lifesjourneyyesr5079]

I sincerely appreciate this video brotha! We run the 620Du pumps. I work hard giving my 100% focus and effort and I really do strive to get our plants process dialed in; so it really means a lot that their are people like you to provide that visual based in the field education. If you ever have any questions feel free to reach out at anytime.

[@jilllovepupply]

Sir. Thank you so much for this video. We have a 620S pump with 620 RE pumpheads for tube elements. Do you know if it’s correct to use the 620RTC Continuous Tubing Clamp 069.4101.000? This is the only tube clamp I can find online. Thank you so much.

[@westernbioprocess]

The 620RE pumpheads are made for the tubing elements as you mention. You don't use continuous tubing or tubing clamps. If you try to put a continuous tubing clamp in the RE pump head, the pump door won't close. The reason is the gap in that pumphead is set for 4.0mm wall thickness which matches the wall thickness of the Loadsure tubing elements. The continuous tubing rotor is set for 3.2mm wall thickness tubing. The wall thicknesses are not interchangeable.

[@jilllovepupply]

@@westernbioprocess thank you for the clarification!

[@Yuusuke020393]

Hi John, I have a question. The pump has an internal calibration setting. Part of this setting, is the "Tube" parameter. Is the input for this parameter should be the inner diameter of the tubing / pipe used?

[@westernbioprocess]

Yes, the tubing ID in mm should be used in the calibration menu. Check the black plastic tubing clamps also to make sure the ID stamped on the clamps matches the tubing ID.

[@iyokowa]

Hello, please how do you remove the clamps? I want to switch the clamps to different tube size but it’s stuck and won’t come off. Thanks

[@westernbioprocess]

When the clamps are stuck, I've used flat head screwdrivers to pry them out. I start with smaller eyeglass type screwdrivers to minimize damage to the clamps. Often dried product residue is the culprit for sticking. Warm water can sometimes help. A light tap with a rubber mallet can also work.

[@iyokowa]

Thank you. I’ll try that.