Bosch Rexroth Sytronix FcP 50 Series Operating Instructions Manual page 96

94/143 Bosch Rexroth AG
Troubleshooting
Malfunction Possible cause
No or too less pres‐ Defective mechanical drive (e.g. defective cou‐
sure. pling).
Drive power too low.
Unsufficient suction behavior, e.g. air in the suc‐
tio port, unsufficient diameter of the suction port,
too high viscosity of the hydraulic fluid, too high
suction height, too low suction pressure, foreign
bodies in the suction port.
Hydraulic fluid not in optimum viscosity range.
External control of the adjusting device defec‐
tive.
To low control pressure or set pressure.
Malfunction of adjusting device or of the control‐
ler of the axial piston unit.
Wear of axial piston unit.
Mechanical damage of axial piston unit (e.g.
damaged bearings).
Drive unit defective (e.g. hydraulic motor or -cyl‐
inder).
Pressure or volume Axial piston unit not or unsufficiently ventilated.
current fluctuation
Unsufficient suction behavior, e.g. air in the suc‐
tio port, unsufficient diameter of the suction port,
too high viscosity of the hydraulic fluid, too high
suction height, too low suction pressure, foreign
bodies in the suction port.
Too high temperature Too high inlet temperature on the axial piston
of hydraulic fluid and of unit.
the housing
Malfunction of pressure control valve (e.g. high-
pressure limitation valve, pressure cutoff, pres‐
sure control).
Wear of axial piston unit.
Change axial piston Command value not firm.
unit and contact Bosch
Resonances in the tank line.
Rexroth service.
Malfunction of setting device or of the controller. Contact Bosch Rexroth service.
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Rexroth Sytronix FcP 50xx/70xx Motor-Pump Unit MPES2
Tab. 13-2: Malfunctions axial piston unit
DOK-SYTROX-MPES2******-IT01-EN-P
Remedy
Machine or system manufacturer.
Machine or system manufacturer.
Machine- or system manufacturer (e.g. optimize
intake relations, use suitable hydraulic fluid).
Completely bleed the axial piston unit, fill the
suction port with hydraulic fluid.
Remove foreign bodies in the suction port.
Use suitable hydraulic fluids (machine- or sys‐
tem manufacturer).
Check external control unit (machine- or system
manufacturer).
Check control pressure or set pressure and
contact Bosch Rexroth service.
Contact Bosch Rexroth service.
Change axial piston unit and contact Bosch
Rexroth service.
Change axial piston unit and contact Bosch
Rexroth service.
Machine or system manufacturer.
Completely ventilate axial piston unit
Machine- or system manufacturer (e.g. optimize
intake relations, use suitable hydraulic fluid).
Machine- or system manufacturer (e.g. optimize
intake relations, use suitable hydraulic fluid).
Remove foreign bodies in the suction port.
Machine or system manufacturer: Check sys‐
tem, e.g. malfuction of the cooling unit, too less
hydraulic fluid in the pan.
Contact Bosch Rexroth service.
Change axial piston unit and contact Bosch
Rexroth service.
Machine or system manufacturer.
Machine or system manufacturer.