**5. Valve Sticking Issues**

*Causes:*
- Contaminated or degraded hydraulic oil.
- Aging rubber components at the oil tank inlet.

*Solutions:*
- Replace hydraulic oil regularly to prevent contamination.
- Use high-quality hydraulic oil as recommended.
- Replace aging rubber components to maintain system integrity.

**6. Cylinder Sliding Issue**

*Causes:*
- Dirty or damaged back pressure valve or poppet valve.
- Insufficient back pressure.
- Worn or damaged sealing components.
- Contaminated hydraulic oil.

*Solutions:*
- Clean or replace the back pressure valve and poppet valve.
- Adjust back pressure valve to the standard pressure.
- Replace worn sealing components and investigate causes of wear.
- Replace contaminated hydraulic oil and maintain regular oil changes.

For specific error codes and detailed troubleshooting steps, it's advisable to consult the user manual corresponding to your Durma press brake model. These manuals provide comprehensive guidance tailored to each machine.

**3. Slider Unable to Perform Bending or Bending Speed Very Slow**

*Causes:*
- Slider hasn't reached the speed conversion point.
- Inadequate parameter settings in the system's Y-axis bending section.
- Insufficient pressure due to programming issues, parameter settings, or hydraulic problems.

*Solutions:*
- Ensure the Y-axis state transitions correctly; adjust fast-forward parameters if needed.
- Re-adjust parameters in the Y-axis bending section.
- Investigate programming, parameter settings, and hydraulic systems; use pressure gauges and multimeters to diagnose issues.

**4. Main Motor Automatically Stops; Thermal Relay or Circuit Breaker Protection Activated**

*Causes:*
- Stuck proportional pressure valve or main pressure reducing valve causing continuous pressurization.
- Clogged filter element leading to high oil pump pressure.
- Contaminated or poor-quality hydraulic oil.
- Faulty circuit breaker or thermal relay.
- System control pressure output failure sending incorrect signals.

*Solutions:*
- Clean or replace the proportional pressure valve and main pressure reducing valve.
- Replace the filter element and assess oil contamination.
- Use recommended high-quality hydraulic oil.
- Replace faulty circuit breakers or thermal relays.
- Verify the system's pressure output signals.

Durma press brakes are advanced machines used for precise metal bending. Occasionally, operators may encounter error codes or issues that require troubleshooting. Here are some common problems and their potential solutions:

**1. Main Motor Not Starting**

*Causes:*
- Emergency stop button engaged or cable wiring issues.
- Problems with the 24V control power supply.
- Faulty components like thermal relays, circuit breakers, or AC contactors.
- Power supply issues.

*Solutions:*
- Ensure the emergency stop button is released and check for loose wiring.
- Verify the 24V control power supply is functioning correctly.
- Inspect and, if necessary, replace faulty components.
- Confirm the stability of the three-phase power supply.

**2. Slider Not Descending Rapidly**

*Causes:*
- Slider guide adjusted too tightly.
- Incorrect position of the rear blocking material axis.
- Slider not at the dead center position.
- Foot switch signals not reaching the module.
- Faulty proportional servo valve.

*Solutions:*
- Adjust the slider guide appropriately.
- Check the actual position of the rear blocking axis and ensure it matches the programmed value.
- Ensure the Y-axis status is correct; adjust parameters if necessary.
- Inspect foot switch and related input signals for proper operation.
- Verify the proportional servo valve's feedback and functionality.