# Troubleshooting Guide

Problem | Reason | Action
--- | --- | ---
The tool does not shut off, or the tightening time is too long. | Target torque close to maximum torque of the tool. | Chose a bigger tool with more power.
| Low dynamic air pressure. | Check the dimensions of the hose and couplings. Increase the air pressure.
| Low rotation speed. | See problem "The rotation speed is too low".
| The extension is too long. | Check the extension.
| Worn extension or socket/bits. | Check the extension and socket/bits.
| Torque setting screw is turned too much. | Adjust the torque setting screw CCW until tool shuts off.
| The stop pin in the shut off mechanism is incorrectly adjusted. | Check with a gauge.
| Incorrect oil level in the Pulse unit. | Adjust the oil level or refill the oil.
| The joint is too soft for the tool. | Chose a bigger tool with more power.
| Worn parts in the Pulse unit. | Inspect and replace any worn parts, see https://servaid.atlascopco.com.
| Malfunctioning AutoTrim. | Check the AutoTrim function.
| The yield point of the joint is reached. | Check the joint specification.
The pulse frequency is too high or too low. | Incorrect oil level in the Pulse unit. | Adjust the oil level or refill the oil.
Inconsistent shut off or insufficient accuracy | The target torque is not within the tool specification. | Change to a different tool size.
| Not enough pulses (hard joint and low torque setting). | See section Optimizing the Performance of Your ErgoPulse Tool.
| Extension is too long. | Check the extension.
| Worn extension or socket/bits. | Check the extension and socket/bits.
| Pressure fluctuations in the air supply. | Use a pressure regulator (for each tool) to get a consistent air supply.
| Incorrect oil level in the Pulse unit. | Adjust the oil level or refill the oil.
| Friction is too low on the Torque setting screw. | Replace with new screw.
| Worn parts in the Shut off mechanism. | Inspect and replace any worn parts.
| Stop pin in the Shut off mechanism is not correctly adjusted. | Check with a gauge.
| Malfunctioning AutoTrim. | Check the AutoTrim function.
| The joint is too soft and max torque setting. | Reduce the torque setting slightly, or use a bigger tool with more power.
The rotation speed is too low. | Not enough air pressure. | Check the dimensions of the hose and couplings. Increase the air pressure.
| Wrong Trim valve setting | Adjust the Trim valve.
| Dirt in the Inlet or the Silencer. | Clean or replace the air Inlet strainer and the Silencer filter if needed.
| Worn parts in the motor. | Inspect and service the motor.
| Wrong or damaged trigger valve. | Inspect the trigger valve.
AutoTrim does not work properly | Set screw in tool handle is set to Trim mode. | Set the Set screw to AutoTrim mode.
| Dirt in the silencer filter. | Replace the silence filter.
| Wrong adjustments or settings. | See section Adjusting the AutoTrim Valve.
| Dirt or damaged parts in the AutoTrim. | Inspect and replace any worn parts.
| The wrong auto-trim part has been used. | Check Spare Part for to use, see https://servaid.atlascopco.com.