46/68 Commissioning
Bosch Rexroth AG
, A4CSG, Series 3x, RE 92105-01-B/06.2017
To test the hydraulic fluid supply:
1.
Allow the drive motor to run at the lowest speed (in accordance with data
sheet (92105)). The axial piston unit must run without load, i.e. at the lowest
permissible working pressure. Pay attention to leaks and noises.
2.
Check the axial piston unit’s drain line during the test. The drain fluid should be
without bubbles.
3.
Increase the load and check whether the working pressure rises as expected.
4.
Perform a leak test to ensure that the hydraulic system is sealed and can
withstand the maximum pressure.
5.
Check the suction pressure at port
S
of the axial piston pump at nominal speed
and maximum swivel angle. Refer to data sheet (92105) for the permissible value.
6.
At maximum working pressure, check the case pressure at port
T
or
R(l)
. Refer
to data sheet (92105) for the permissible value.
8.1.3 Performing a functional test
wARnInG
Improperly connected axial piston unit!
Mixing up the ports will lead to malfunctions (for example, lift instead of lower) and
thus to corresponding danger to persons 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, you must perform a functional test
on 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, it must be ensured
that the axial piston unit was installed properly in the machine/system.
▶
After starting the drive motor, check in particular the specified pressures,
e.g., working pressure, boost pressure , and case pressure.
▶
Perform a leak test and heat development test with and without load prior to
normal operation.
▶
If necessary, disconnect the pressure gauge and plug the ports with the specified
threaded plugs.
