Running-In Phase; Recommissioning After Standstill - Bosch rexroth 12 Series Instruction Manual

46/60 A15VSO/A15VLO series 12 | Commissioning
Bosch Rexroth AG, RE 92802-01-B/2023-03-27
▶ After starting the drive motor, check in particular the specified pressures,
e.g. working pressure and case pressure.
▶ Perform a leak test without and with load prior to normal operation.
▶ If necessary, remove the pressure gauge and plug the ports with the specified
threaded plugs.
8�2 Running-in phase
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,
Bosch Rexroth recommends changing 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 43.
NOTICE