Bosch Rexroth Sytronix MPA01 Operating Instructions Manual page 90

88/123 Bosch Rexroth AG
Troubleshooting
Malfunction
Inlet pressure <0.6 bar
Inlet pressure >2 bar
Output flow is not achieved
Permanent output pressure >315bar
Wear caused by radial force on the
shaft
Wear caused by axial thrust on the
shaft
Pump wear
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Possible cause
Faulty dimensioning of the suction line
(length, cross-sections, angle)
Speed too high
Foreign body in the suction channel
Air pressure too low (also tank without
pressure compensation)
See malfunction "Fluid leakage"
Pump sucks in air
Input speed too low
See malfunctions "Admissible level of contamination of the hydraulic fluid excee‐
ded"
See malfuntion "Pump wear"
Line cross-section too little
Flow resistances too high
Admissible load exceeded
Incorrect installation
Unsuitable parts
Tightening torque for the screws is too
low
See malfuntion "Pump wear"
Incorrect installation
Unsuitable parts
See malfuntion "Pump wear"
Contaminated or wrong operating me‐
dium
Tab.16-1: Measures to be taken in case of PGH pump malfunctions
DOK-SYTROX-MPA01******-IT02-EN-P
Rexroth Sytronix SvP 70xx Motor-Pump Unit MPA01
Remedy
Observe the project planning information
in RE 10227
Observe the maximum speed in the pro‐
jekt planning
Remove the foreign body
Observe the absolute pressure in the
project planning.
Check the level in the fluid tank and cor‐
rect it, if necessary. Observe the infor‐
mation on the design of the lines in hy‐
draulic trainer, volume 3 and project
planning information.
During project planning, observe the ad‐
missible pressure peak in RE 10227
Observe the information on the design
of the lines in hydraulic trainer, volume 3
and project planning information
For limiting the operating pressure and
for the solenoid-actuated discharging of
the operating pressure, install a pump
safety block. In doing so, observe the in‐
formation in RE 10227
Observe the installation information
Use only an original combination part
set
Observe the tightening torques in the in‐
stallation information
Observe the installation information of
the coupling manufacturer
Use only an original combination part
set
Filter or exchange the operating medi‐
um, perform regular controls.