How to Replace the Impeller on Flygt N 3127 Pumps with Adaptive N® Impeller

This is an informational video on impeller replacement for the Flygt N 3127 pump, featuring an Adaptive N impeller. This video is intended as a general reference for technical personnel tasked with maintaining pump performance and ensuring the replacement process is done safely and effectively. This video is NOT intended to serve as a step-by-step, fail-safe checklist. Projects vary and may require additional steps provided for in the Manual that are not included in this video.
The video demonstrates the disassembly and reassembly of the impeller and pump housing, including cleaning, adjusting, and securing the components.
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Disclaimer Warning:
Carefully review the product specific Installation, Operation and Maintenance manual (“Manual”) before tampering with the product in any way.
All user safety rules and instructions contained in the Manual, as well as any other applicable safety rules, must be observed.
This video is provided as general reference only, as a complement to the Manual, and cannot be relied upon as a substitute for professional advice.
Failure to follow all instructions in the Manual may void the manufacturer's warranty.
If there is a question or any uncertainty regarding the intended use or maintenance of the equipment, contact a Xylem representative before proceeding.
Xylem cannot be held responsible for any actions or inactions undertaken as a result hereof.
00:00-00.14 Introduction
00:14-00:24 Lay the Pump on Its Side
00:24-00:35 Remove the Impeller Plug
00:35-00:51 Loosen the Impeller Screw
00:51-01:13 Lift Pump & Remove Pump Housing Screws
01:13-01:32 Lift Pump and Lay on Its Side
01:32-01:44 Remove the Impeller Screw
01:44-02:05 Remove the Impeller
02:05-02:24 Clean and Fit the Ring
02:24-02:37 Mount the Parallel Key
02:37-02:48 Grease the Shaft
02:48-03:00 Fit Adjustment Washers
3:00-03:15 Mount the Impeller
03:15-03:46 Impeller and Washers
03:40-04:09 Fit the Pump into Pump Housing
04:09-04:59 Measure Clearance
04:59-05:15 Tighten Impeller Screw
05:15-05:35 Fit Lubricated Plug
05:35-06:02 Check Impeller
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