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58/64 Troubleshooting
Bosch Rexroth AG
, Accumulator shut-off block type ABZSS, 0532VAW, RE 50129-B/02.19
Table 9: Accumulator shut-off block fault list
Fault
Possible cause
Remedy
Hydraulic accumulator
overload
Inappropriate hydraulic fluid
▶
For the admissible hydraulic fluid, refer to the data
sheet of the respective accumulator shut-off block, see
chapter 1.2 "Required and amending documentation".
Viscosity too high
▶
For the admissible hydraulic fluid, refer to the data
sheet of the respective accumulator shut-off block, see
chapter 1.2 "Required and amending documentation".
Insufficient oil cleanliness
▶
For the admissible cleanliness class, refer to the data
sheet of the respective accumulator shut-off block, see
chapter 1.2 "Required and amending documentation".
Tank line pressurized
▶
Return the depressurized tank line to the tank.
Insufficient maximum securable flow
▶
For the maximum admissible flow, refer to the
characteristics specified in the data sheet of the
respective accumulator shut-off block, see chapter 1.2
"Required and amending documentation".
Pressure relief valve not switching
▶
Check the function of the type-examination tested
pressure relief valve.
Insufficient flow to the
hydraulic accumulator
Oil supply
▶
Switch on the pump.
Leakage to the tank
▶
Select a suitable pressure relief valve the machine/
system according to the data sheets of the offered
accumulator shut-off block, see chapter 1.2 "Required
and amending documentation".
Manual relief not closed completely
▶
Close the manual relief.
Manual relief leaking in closed condition
▶
Use a manual relief in original equipment quality.
Electro-magnetic relief open
▶
Control the electro-magnetic relief.
Electro-magnetic relief leaking in closed
condition
▶
Use an electro-magnetic relief in original equipment
quality.
Electro-magnetic pressure maintenance
open
▶
The control of the electro-magnetic pressure
maintenance shall be omitted (variant ABZSS...C).
External leakage
▶
Use seals in original equipment quality.
Hydraulic accumulator
damaged, no pressure
accumulation
Insufficient discharge oil limit
▶
Limit the accumulation speed with an orifice.
External leakage
Leaking housing
▶
Use seals in original equipment quality.
Accumulator adapter leaking
▶
Use seals in original equipment quality.
Sealing surfaces contaminated or
damaged
▶
Insure that the sealing surfaces are clean and not
damaged.
Incorrect assembly
▶
Have assembly only carried out by qualified, trained
and instructed specialists.
▶
Only use spare parts in original equipment quality.
Electro-magnetic relief
without function
Electrical voltage supply
▶
Check the voltage supply.
Loud flow noises
Air in the system
▶
Bleed the machine/system.
▶
Contact the machine/system manufacturer.
Manual relief not closed completely
▶
Close the manual relief.
Incomplete flow blocking
Leakage at the system shut-off cock
▶
Use a system shut-off cock in original equipment
quality.
14.2 Fault list