Bosch Rexroth 10 Series - Running-In Phase; Recommissioning after Standstill

RE 91485-01-B/2021-11-18, BoschRexrothAG
Commissioning | A10FZO/G, A10VZO/G 57/72
8�2 Running-in phase
NOTICE
Property damage due to insufficient viscosity!
Elevated hydraulic fluid temperature may excessively reduce viscosity and damage
the product!
▶ Monitor the operating temperature during the running-in phase, e.g.by
measuring the leakage temperature.
▶ Reduce the loading (pressure, rotational speed) of the axial piston unit if
unacceptable operating temperatures and/or viscosities occur.
▶ Excessively high operating temperatures indicate faults that have to be
analyzed and eliminated.
The bearings and sliding surfaces are subject to arunning-in phase. The increased
friction at the start of the running-in phase results in increased heat development
which decreases with increasing operating hours. The mechanical-hydraulic
efficiency is also greater until the running-in phase of about 10 operating hours is
concluded.
To ensure that contamination in the hydraulic system does not damage the
axial piston unit, BoschRexroth recommends the following procedure after the
running-in phase:
▶ After the running-in phase, have ahydraulic fluid sample analyzed for the
required cleanliness level.
▶ Change the hydraulic fluid if the required cleanliness level is not reached.
If alaboratory test is not carried out after the running-in phase, it is
recommended to change the hydraulic fluid.
8�3 Recommissioning after standstill
Depending on the installation conditions and ambient conditions, changes may
occur in the hydraulic system which make recommissioning necessary.
The following criteria may make recommissioning necessary:
• Air and/or water in the hydraulic system
• Old hydraulic fluid
• Other contamination
▶ Before recommissioning, proceed as described in chapter8.1
"Initial commissioning" on page54.