Bosch rexroth A21VG 10 Series - Troubleshooting; How to proceed for troubleshooting

48/56 Troubleshooting
Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020
14 Troubleshooting
Table 13 is intended to support troubleshooting. This table is not exhaustive.
Issues may occur in practice that are not listed here. Only authorized personnel
may perform troubleshooting inside asafety area designated by the machine
manufacturer.
14.1 How toproceed for troubleshooting
▶ Perform troubleshooting ifpossible with reduced operating data
(e.g.slowlyswinging inor out and slow pressure increase).
▶ Use asystematic and targeted approach, even when pressed for time. Random,
indiscriminate removal and changing ofsettings could make itimpossible
todetermine theoriginal cause ofthefault.
▶ First get ageneral idea ofhow your product works inconjunction with
theentiresystem.
▶ Try tond out whether ornot theproduct was working properly inconjunction
with theentire system before thefault occurred.
▶ Try todetermine any changes tothe entire system inwhich theproduct
isinstalled:
– Have there been any changes tothe application conditions oroperating range
oftheproduct?
– Has maintenance work recently been carried out? Is there aninspection
ormaintenance log?
– Have any changes (e.g. upgrades) orrepairs been made tothe overall system
(machine/system, electrics, control) ortothe product? Ifyes: What changes?
– Has thehydraulic uid been changed?
– Has theproduct ormachine been used asintended?
– How does themalfunction appear?
▶ Try toget aclear idea ofthecause ofthefault. Directly ask the(machine)
operator.
▶ Document thework carried out.
▶ If thefault cannot becorrected, please refer toone ofthecontract addresses
at: www.boschrexroth-us.com/contactus.