Table Of Contents - Danfoss K Frame Series Service Manual

Service Manual
K and L Frame Variable Motors, Cartridge Mount
Contents
Introduction
Technical specifications
Features
Pressure measurements
Initial start-up procedures
Fluid and filter maintenance
Troubleshooting
Minor repair
Notes
© Danfoss | July 2017
Overview..............................................................................................................................................................................................4
Safety precautions............................................................................................................................................................................4
Symbols used in Danfoss literature............................................................................................................................................4
Design...................................................................................................................................................................................................6
The System circuit............................................................................................................................................................................ 6
Overview..............................................................................................................................................................................................8
Features and options...................................................................................................................................................................... 8
Specifications..................................................................................................................................................................................... 8
Operating parameters.................................................................................................................................................................... 8
Fluid specifications.......................................................................................................................................................................... 8
Output shafts...................................................................................................................................................................................10
Controls............................................................................................................................................................................................. 10
Control orificing........................................................................................................................................................................ 10
Brake release port.......................................................................................................................................................................... 10
Required tools................................................................................................................................................................................. 11
Port locations and gauge installation.....................................................................................................................................11
General ..............................................................................................................................................................................................12
Start-up procedure........................................................................................................................................................................ 12
Recommendations........................................................................................................................................................................ 13
Excessive noise and/or vibration..............................................................................................................................................14
System operating hot...................................................................................................................................................................14
Motor shifting irregularities....................................................................................................................................................... 14
Shaft seal replacement.................................................................................................................................................................15
Remove the shaft seal............................................................................................................................................................. 15
Inspect the components........................................................................................................................................................ 15
Install the new shaft seal........................................................................................................................................................15
Loop flushing valve....................................................................................................................................................................... 15
Remove the loop flushing valve..........................................................................................................................................15
Inspect the components........................................................................................................................................................ 16
Install the loop flushing valve.............................................................................................................................................. 16
Anti-Cavitation Valve.................................................................................................................................................................... 16
Remove the anti-cavitation valve....................................................................................................................................... 16
Inspect the components........................................................................................................................................................ 17
Install the anti-cavitation valve............................................................................................................................................17
520L0631 | AX00000042en-US0402 | 3