Bosch rexroth A4VSO 10 Series User Manual

50/72 Commissioning
BoschRexrothAG, axial piston variable pump A4VSO, RE 92050-01-X-B1/2019.08.23
When you test thehydraulic fluid supply, constantly monitor noise development and
check thehydraulic fluid level inthe reservoir. If the axial piston unit becomes louder
(cavitation) or the leakage fluid contains bubbles, this is an indication that the
axialpiston unit is not being sufficiently supplied with hydraulic fluid.
For information ontroubleshooting, see chapter14 "Troubleshooting" onpage66.
To test thehydraulic fluid supply:
1. Test the axial piston unit in a non-explosive atmosphere.
2. Allow the drive motor to run at the lowest rotational speed
(perdatasheet(Part II)). The axial piston unit should beoperated without load.
Pay attention toleaks and noises.
3. Check the axial piston unit’s drain line during the test. The leakage fluid should
not contain any bubbles.
4. Increase theload and check whether theworking pressure rises asexpected.
5. Perform aleak test toensure thehydraulic system issealed and can withstand
themaximum pressure.
6. Check thesuction pressure atportS oftheaxial piston pump atnominal speed
and maximum swivel angle. Refer tothe data sheet (Part II) for thepermissible
value.
7. At maximum pressure, check the case leakage pressure at portT or R(L). Refer
tothe data sheet (Part II) for thepermissible value.
8.1.5 Performing afunctional test
WARNING
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 the specified pressures in particular,
e.g.system pressure, boost pressure and case pressure.
▶ Prior to normal operation, measure the heat development with an approved
measuring device without load and with the customer-specific operating data.
The temperature can rise up to the maximum temperature specified on the
datasheet(Part II).
▶ Prior to normal operation, perform a leak test and heat development test without
and with load in a non-explosive atmosphere.
▶ If necessary, disconnect the pressure gauge and plug the ports with threaded
plugs.

Bosch rexroth A4VSO 10 Series Specifications

General

Brand	Bosch
Model	rexroth A4VSO 10 Series
Category	Water Pump
Language	English