Troubleshooting
Hydraulic concrete buster does not work
Cause | Remedy | By |
|---|---|---|
Shut-off valve in line A and/or B closed | Check and open shut-off valve | Carrier driver |
Defective couplings blocking lines A and B | Check coupling halves and replace defective coupling halves | Workshop |
Oil level in tank too low | Top up oil | Carrier driver |
Faults in the electrical system of the hydraulic concrete buster installation | Check electrical system of hydraulic concrete buster installation and remedy defects | Workshop |
Rocker switch defective | Check the rocker switch and replace | Workshop |
Magnet on switch-on valve damaged | Replace the magnet | Workshop |
Shearing capacity too low
Cause | Remedy | By |
|---|---|---|
Lines A and B swapped Only different pressure settings of lines A and B of existing installation permit hydraulic hammer operation. | Check connection of lines A and B and connect lines A and B correctly (see chapter Hydraulic connection) | Carrier driver |
Operating pressure too low | Check pump output and pressure relief valve and correct operating pressure | Epiroc Customer Center / Dealer in your area |
Hydraulic concrete buster does not cut
Cause | Remedy | By |
|---|---|---|
Blades worn or broken | Check blades and turn or replace (see chapter Turning or changing cutter blades) | Workshop |
Excessive blade clearance | Check blade clearance and re-adjust (see chapter Checking and correcting the blade clearance) | Workshop |
The hydraulic concrete buster cannot be rotated
Cause | Remedy | By |
|---|---|---|
Rotation motor/gear unit/rotary transmission defective | Check rotation motor/gear unit/rotary transmission and replace defective parts | Epiroc Customer Center / Dealer in your area |
Operating temperature too high
Cause | Remedy | By |
|---|---|---|
Oil level in tank too low | Check oil level and top up oil | Carrier driver or workshop |
Carrier pump delivery too high; a constant volume of oil is squirted out of the pressure relief valve | Check and correct motor speed of carrier Drive the pump | Epiroc Customer Center / Dealer in your area |
Pressure relief valve defective or valve with poor characteristics | Fit new type-tested pressure relief cartridges or a more precise pressure-limiting valve | Workshop or Epiroc Customer Center / Dealer in your area |
Oil leaks from hydraulic ports
Cause | Remedy | By |
|---|---|---|
Flange halves and/or cap nuts are loose | Check and tighten flange halves and/or cap nuts (see chapter Bolt connections / Tightening torques) | Carrier driver |
Oil leak at parts of the hydraulic concrete buster installation (bolted connections, hoses etc.)
Cause | Remedy | By |
|---|---|---|
Bolted connections are loose; flange connections at valve are loose | Check and tighten bolted connections; replace defective parts if necessary (see chapter Bolt connections / Tightening torques) Check hydraulic concrete buster installation, replace damaged partsUse only original parts (see chapter Bolt connections / Tightening torques) | Carrier driver or workshop |
Insufficient lubrication
Cause | Remedy | By |
|---|---|---|
Intervals between lubrication too long | Check lubrication and lubricate (see chapter Lubrication) | Carrier driver |
Automatic closing of cutter jaws
Cause | Remedy | By |
|---|---|---|
Rapid movement valve defective | Check and replace rapid movement valve | Workshop or Epiroc Customer Center / Dealer in your region |
Automatic turning of hydraulic concrete buster
Cause | Remedy | By |
|---|---|---|
Internal leaks in hydraulic system | Check and repair the hydraulic system | Workshop |
Pressure relief valve defective | Fit new pressure limiting cartridge | Epiroc Customer Center / Dealer in your area |