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Load-sensing control block SB11 | Troubleshooting
Bosch Rexroth AG, RE 66177-B/2022-05-03
14 Troubleshooting
Table 17 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
▶ Work systematically and in a targeted manner, 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 overview of how the control block/control block segment
works in conjunction with the entire system.
▶ Find out whetherIn not the control block/control block segment was working
as required in the entire system before the fault occurred.
▶ Try to determine any changes to the entire system in which the control block/
control block segment 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, electrics, control) or to the product? If yes: What changes?
– Has the hydraulic fluid been changed?
– Has the product or machine been used as intended?
– How does the malfunction appear?
▶ Document the work carried out.
▶ If the fault cannot be corrected, please refer to one of the contract addresses at:
www.boschrexroth.com/addresses or in chapter 10.4 "Spare parts".
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