How to Replace Seal and Stack in Grundfos CR 1 5 Vertical Inline Multistage Pumps

Have you ever had to replace an impeller and a seal on a pump in the past? This video will show how easily a complete impeller stack, and a cartridge seal can be replaced on a Grundfos Small CR inline multi-stage pump. This video is for CR pumps versions 1-5. av

[@yourfriendlybair]

Set screws on the seal shaft? When do those get tightened?

[@grundfos]

Hi Travis, Thank you for contacting us. In this particular video you can find this at 10:40. However, depending on your CR size this could be different. Please be advised that you can find a wealth of technical information, including Operations and Installations Manuals on our website. Please simply search for the product you need and use the documentation tab to find and download all the information. Find our website here: gfos.ly/6056uzZTO. Please do not hesitate to write to me again if you would like further information. Kind Regards, Krystyn

[@trevorfitzgerald4996]

Expensive pumps to maintain

[@grundfos]

The CR is designed to have greater serviceability and the only regular maintenance that is needed is fast and easy, and can be done on-site to keep costs low. No need to realign or rebalance the pump, rotating assembly stacking kit allows for easy replacement and single-piece cartridge mechanical seal can be replaced without removing the motor. If you are needing assistance with your pump, please contact our service department by visiting this link: spr.ly/60593ehA5. You can also find an Authorized Service Partner near you here: spr.ly/60503ehAg.
Thanks! Krystyn

[@JD-jq5bs]

Why did he not use the spacer on the grub screw cartridge head?

[@grundfos]

Thank you for contacting us. On small CR models, the shaft seal itself is constructed with an internal spacer. Please be advised that you can find a wealth of technical information, including Operations and Installations Manuals on our website. Please simply search for the product you need and use the documentation tab to find and download all the information. Find our website here: gfos.ly/6052PjokK. Please do not hesitate to write to me again if you would like further information. Kind Regards Krystyn