Performing A Functional Test; Running-In Phase - Bosch rexroth A36VM Instruction Manual

40/54 A36VM | Commissioning
Bosch Rexroth AG, RE 91650-01-B/2021-07-19
4� Perform a leak test to ensure the hydraulic system is sealed and can withstand
the max. pressure.
5� At maximum working pressure, check the case pressure at port T
data sheet 91650 for the permissible value.
8�1�3 Performing a functional test
Improperly connected axial piston unit!
Mixing up the ports will cause malfunctions (e.g. lift instead of lower) and could
endanger personnel and equipment!
▶ Before the functional test, check whether the piping specified in the hydraulic
circuit diagram has been installed.
Once you have tested the hydraulic fluid supply, perform a functional test of
the machine/system. The functional test should be performed according to the
instructions of the machine/system manufacturer.
The axial piston unit is tested for functional capability and performance before
delivery according to the technical data. During commissioning, make sure the
axial piston unit was installed in the machine/system as intended.
▶ After starting the drive motor, check in particular the specified pressures,
e.g. working pressure, boost 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:

WARNING
NOTICE
or T . Refer to
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