# Troubleshooting

The table describes the most common problems, possible reasons and how to fix them. Note that some actions must be carried out by authorized workshops or qualified service technicians.

Problem | Possible reason | Action
--- | --- | ---
Free speed is too slow, pressure never reaches the target. | Too low air flow in the pressurized air system. | Shorter hose to the FRL unit and/or larger diameter is needed. See Installation proposal for more information.
The tool has been in contact with water. | The pressurized air system contains condensed water. | See Service recommendations for specific environments.
The tool does not start. | No air flow to the tool. | Make sure that the air connection is correctly set.
| Motor jammed. | *
Inconsistent idling speed. | Unstable air pressure. | Make sure that the air pressure regulator is working correctly.
| Worn governor (LBB45). | *
Low power | Low air pressure. | Make sure that the air pressure is correctly set.
| Wrong lenght or dimension of air supply hose. | Make sure that the air connection is correctly set.
| Blocked filters. | Clean or change the corse and fine filter
| The humidity in the air is high. | Make sure that the compressor is working correctly.
| Too much grease in the gear box. | Make sure that the amount of grease is correct.
| Worn throttle valve | *
| Worn vanes/motor? | *
| Worn governor (LBB45) | *
Tool starts unexpectedly | Damaged throttle valve | *
| Valve pin jammed in start position. | Change pin and guide
Vibrations | Worn or damage drill bit. | Change drill bit
The motor housing istoo hot. | Too much grease in the gear box. | Make sure that the amount of grease is correct.
Abnormal sound | Not enough grease in gear housing. | Make sure that the amount of grease is correct.
| Damaged gear. | *
| Worn motor bearings. | *

*) This service must only be carried out by authorized workshop or qualified service technician.