Xylem FLYGT 2640.281 User Manual

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Service and Repair Instructions

885618_3.0

2640.181/.281

Table of Contents

Questions and Answers:

D
Donald CamachoAug 9, 2025
What to do if my Xylem Water Pump motor protection trips?
- L
  lauren91Aug 9, 2025
  If your Xylem Water Pump runs, but the motor protection trips, first ensure the motor protection is appropriately set according to the data plate and cable chart, if applicable. If the impeller is hard to rotate, clean the impeller and the sump, and verify the impeller is correctly trimmed. Check the fuses and replace any that have tripped. If fuses are intact, a certified electrician should be notified.
C
Cody JohnsAug 15, 2025
Why is my Xylem FLYGT 2640.281 Water Pump delivering too little or no water?
- K
  Kristen CampbellAug 16, 2025
  If your Xylem Water Pump delivers too little or no water, check if the impeller rotates in the wrong direction (transpose two phase leads for 3-phase pumps). Ensure all valves are correctly positioned, reset valves if needed, and replace if necessary, ensuring correct installation according to media flow and proper opening. If the impeller is hard to rotate, clean it and the sump, and verify it's correctly trimmed. Clear any obstructions in the pipes, seal any leaks, and replace worn parts on the impeller, pump, or casing. Lastly, check the liquid level and level sensor setting; consider adding a foot valve for priming, depending on the installation.
J
John WeberAug 21, 2025
How to troubleshoot a Xylem FLYGT 2640.281 Water Pump that does not start?
- D
  daniel33Aug 22, 2025
  If the Xylem Water Pump does not start, it might be due to an alarm signal triggered on the control panel. To resolve this, verify that the impeller rotates freely, the sensor indicators do not show an alarm, and the overload protection hasn't tripped. If the pump starts manually but not automatically, check the start level regulator for proper function, cleaning or replacing it if needed. Also, ensure all connections are intact, relay and contactor coils are undamaged, and the control switch (Man/Auto) makes contact in both positions. Inspect the control circuit and functions.
E
Emma AlvarezAug 27, 2025
What to do if my Xylem FLYGT 2640.281 starts and stops repeatedly?
- C
  Christopher StoutAug 27, 2025
  If your Xylem Water Pump starts and stops rapidly, it could be due to back-flow filling the sump to the start level again, or the self-holding function of the contactor malfunctioning. Ensure sufficient distance between the start and stop levels and that the non-return valves are working correctly. Also, make sure the discharge pipe between the pump and the first non-return valve is short enough. Check the contactor connections, the control circuit voltage relative to the coil's rated voltage, and the stop-level regulator's function. Determine if the voltage drop during the starting surge causes the contactor's self-holding malfunction.
J
Joshua HigginsSep 2, 2025
Why doesn't my Xylem FLYGT 2640.281 stop when using a level sensor?
- F
  fosterluisSep 2, 2025
  If your Xylem Water Pump doesn't stop when a level sensor is used, it could be because the pump can't empty the sump to the stop level, there's a malfunction in the level-sensing equipment, or the stop level is set too low. Check for leaks in the piping and discharge connection, ensure the impeller isn't clogged, and verify the non-return valves function properly. Confirm the pump has adequate capacity. Clean the level regulators, check their functioning, and inspect the contactor and control circuit, replacing any defective items. If the stop level is too low, raise it.

Xylem FLYGT 2640.281 Specifications

General

Brand	Xylem
Model	FLYGT 2640.281
Type	Submersible Pump
Voltage	400V
Frequency	50 Hz
Weight	63 - 83 kg
Maximum Submersion Depth	20 m
Motor Voltage	400V
Speed	2900 RPM
Outlet Size	80 - 100 mm (3 - 4 in.)
Impeller Type	Semi-open

Summary

1 Introduction and Safety

1.3 User Safety

Guidelines for safe operation, installation, and maintenance by qualified personnel.

1.4 Special Hazards

3 Installation Procedures

3.1 Hazardous Atmospheres

3.2 Electrical Connections

Details on making electrical connections, including precautions and grounding.

4 Maintenance Procedures

4.1 Maintenance Precautions

Essential safety measures and guidelines before performing maintenance.

4.2 Fault Tracing Process

4.6 Pump Assembly Steps

4.7 Service and Overhaul

5 Troubleshooting Guide

5.1 Electrical Troubleshooting

Safety and methods for diagnosing electrical issues with the pump.

5.2 Pump Fails to Start

Troubleshooting steps when the pump does not start automatically or manually.

5.3 Pump Does Not Stop

Diagnosing why the pump fails to stop when a level sensor is used.

5.5 Motor Protection Trips

Troubleshooting when the pump runs but the motor protection trips.

5.6 Low or No Water Delivery

Diagnosing issues when the pump delivers insufficient or no water.

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