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Bosch Rexroth AG
Troubleshooting
Malfunction
Pump is too loud
Interfaces not tight
Pressure peaks over >350 bar from
system
The system interfaces cannot be
mounted
Viscosity <10 mm
2
/s
Viscosity >300 mm
2
/s
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Possible cause
See malfunctions "Interfaces not tight"
See malfunction"Wrong direction of rotation of the drive motor"
Ambient temperature is below -20 °C
Aspiration of air bubbles
Vortex generation in the suction area of
the fluid tank
See malfuntions "Viscosity <10 mm
See malfuntions "Viscosity >300 mm
O-rings
defective
(wrong
damage to the sealing, missing O-ring,
wrong O-ring)
Sealing surfaces contaminated or dam‐
aged.
Incorrect assembly (screws too long)
Combination part is not suitable
Feedback from hydraulic system
Wrong connection flanges/screws suc‐
tion port and/or pressure connection
selected
Hydraulic fluid too hot
Shelf life of the hydraulic fluid is excee‐
ded
Wrong hydraulic fluid filled in
Fluid temperature too low
Wrong hydraulic fluid filled in
Thickening due to mixing
DOK-SYTROX-MPA01******-IT02-EN-P
Rexroth Sytronix SvP 70xx Motor-Pump Unit MPA01
Remedy
Provide for suitable ambient tempera‐
tures
Bleed the system
Check the filling level of the fluid tank
2
/s"
2
/s"
medium,
Use original O-ring
Ensure cleanness and integrity of the
sealing surface.
Assembly only by authorized, trained
and instructed qualified personnel; only
use original spare parts
Observe the project planning information
in RE 10227
During project planning, observe the ad‐
missible pressure peak in RE 10227
Integrate pressure control valves
Observe the flange dimensioning in RE
10227
Information on hydraulic fluids in RE
90220; observe the project planning in‐
formation in RE 10227; check the water
content, viscosity, turbidity and smell on
a regular basis
Information on hydraulic fluids in RE
90220; observe the project planning in‐
formation in RE 10227; check the water
content, viscosity, turbidity and smell on
a regular basis
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