Xylem Flygt 2250 Installation, Operation And Maintenance Manual page 4

Table of Contents
Check the impeller rotation.............................................................................................................21
Operation..............................................................................................................................................22
Precautions.........................................................................................................................................22
Distance to wet areas........................................................................................................................22
Noise level..........................................................................................................................................22
Start the pump...................................................................................................................................22
Clean the pump.................................................................................................................................23
Maintenance.........................................................................................................................................24
Precautions.........................................................................................................................................24
Maintenance guidelines...................................................................................................................24
Torque values....................................................................................................................................24
Service................................................................................................................................................25
Inspection........................................................................................................................................25
Major overhaul................................................................................................................................27
Change the oil...................................................................................................................................27
Empty the oil...................................................................................................................................27
Fill with oil........................................................................................................................................28
Replace the impeller.........................................................................................................................28
Remove the impeller......................................................................................................................28
Install the impeller..........................................................................................................................28
Adjust the impeller.........................................................................................................................29
Replace the diffuser.......................................................................................................................30
Replace the upper diffuser............................................................................................................30
Troubleshooting...................................................................................................................................32
Introduction.......................................................................................................................................32
The pump does not start..................................................................................................................32
The pump does not stop when a level sensor is used.................................................................33
The pump starts-stops-starts in rapid sequence...........................................................................33
The pump runs but the motor protection trips.............................................................................34
The pump delivers too little or no water........................................................................................34
Technical Reference............................................................................................................................36
Application limits...............................................................................................................................36
Motor data..........................................................................................................................................36
Specific motor data...........................................................................................................................36
Dimensions and weights..................................................................................................................37
Performance curves..........................................................................................................................38
2 Flygt 2250 Installation, Operation, and Maintenance Manual