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15 Troubleshooting
Deactivated safeguards!
Danger to life! Risk of injury!
▶ Make sure that all safeguards, e.g. fuses, protective grounding conductor,
▶ Proceed with extreme caution if safeguards need to be deactivated or covers
▶ If possible, operate the machine/system with reduced performance data in
Successful troubleshooting within the hydraulic power unit requires precise
knowledge on the set-up and the mode of operation of individual components.
The combination of hydraulics with an electrical system and electronics makes
troubleshooting very complex.
Circuit diagrams (hydraulic and electric), parts lists, functional diagrams
as applicable and other documentation must be available for effective
troubleshooting.
15�1 How to proceed for troubleshooting
▶ Always work systematically and purposefully, even when under time pressure.
▶ First, get a general idea of the function of the hydraulic power unit in
▶ Try to find out whether the hydraulic power unit has worked properly in
▶ Try to determine any changes of the overall machinery/system, in which the
Control questions:
• Were there any changes to the application conditions or area of application of
the hydraulic power unit?
• Have modifications (e.g. refittings) or repair works been carried out on the overall
system (machine/system, electrical system, control) or on the hydraulic power
unit?
• If yes: What were they?
• Was the hydraulic power unit or the machine/system used as intended?
• How did the fault become apparent?
▶ Try to get a clear idea of the cause of error.
▶ If necessary, ask the actual (machine) operator.
pressure relief valves, covers (frequency converter) are active.
removed for troubleshooting.
set-up mode for identification of errors.
For descriptions and information on faults of the EFC 5610 frequency converter
and the Sytronix FCP 5020 system, see the commissioning instructions
51055-IB, see chapter 1.2 "Required and amending documentation".
Random, thoughtless disassembly and changing of settings might in the worst
case result in the inability to restore the original cause of error.
combination with the overall machinery/system.
combination with the overall machinery/system before the error occurred first.
hydraulic power unit is integrated:
Troubleshooting | CytroPac
WARNING
RE 51055-B, Edition 07.2022, Bosch Rexroth AG
69/80
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