FLYGT 3069 - Page 4

6.2 Torque values.....................................................................................................................37
6.3 Change the oil....................................................................................................................37
6.4 Service the pump...............................................................................................................40
6.4.1 Inspection.................................................................................................................... 40
6.4.2 Overhaul...................................................................................................................... 41
6.4.3 Service in case of alarm..............................................................................................41
6.5 Replace the D-impeller..................................................................................................... 42
6.5.1 Remove the D-impeller.............................................................................................. 42
6.5.2 Install the D-impeller.................................................................................................. 43
6.6 Replace the F-impeller...................................................................................................... 44
6.6.1 Remove the F-impeller...............................................................................................44
6.6.2 Install the F-impeller...................................................................................................44
6.7 Replace the M-impeller and the cutting wheel..............................................................46
6.7.1 Remove the cutting wheel......................................................................................... 46
6.7.2 Remove the M-impeller..............................................................................................46
6.7.3 Install the M-impeller..................................................................................................47
6.7.4 Install the cutting wheel............................................................................................. 48
6.8 Replace the N-impeller..................................................................................................... 49
6.8.1 Remove the N-impeller..............................................................................................49
6.8.2 Install the N-impeller.................................................................................................. 50
7 Troubleshooting....................................................................................................................... 54
7.1 Electrical troubleshooting.................................................................................................54
7.2 The pump does not start...................................................................................................54
7.3 The pump does not stop when a level sensor is used.................................................. 55
7.4 The pump starts-stops-starts in rapid sequence............................................................56
7.5 The pump runs but the motor protection trips..............................................................56
7.6 The pump delivers too little or no water.........................................................................57
8 Technical Reference.................................................................................................................58
8.1 Motor data.......................................................................................................................... 58
8.1.1 Thermal contacts, opening temperature.................................................................58
8.2 Application limits............................................................................................................... 58
8.3 Minimum permitted liquid level...................................................................................... 58
Table of Contents
2 Flygt 3069 Installation, Operation, and Maintenance Manual