What to do if all 4 LEDs flash on my Hilti Grinder and it doesn't work?
If all 4 LEDs are flashing and the device isn't working, it means the tool has been overloaded. Release the control switch, then press it again. Allow the power tool to run under no load for approximately 30 seconds.
Why does my Hilti AG 4S-A22 Grinder motor have no braking effect?
If the motor has no braking effect, it could be due to a low battery. Try changing the battery and charging the empty one. Alternatively, the power tool may have been briefly overloaded. In that case, switch the power tool off and then on again.
How to fix a Hilti AG 4S-A22 Grinder that does not achieve full power?
If the tool doesn't achieve full power, it's possible that a battery with inadequate capacity was used. Try using a battery with adequate capacity.
What to do if 1 LED flashes on my Hilti Grinder and it doesn't work?
If 1 LED flashes and the device isn't working, it could be due to a low battery. Change the battery and charge the empty one. Another possibility is that the battery is too hot or too cold. Allow the battery to cool down or warm up slowly to room temperature.
Why is my Hilti AG 4S-A22 Grinder or battery getting very hot?
If the angle grinder or battery gets very hot, it could be due to an electrical fault. Switch the power tool off immediately, remove the battery, keep it under observation, and allow it to cool down.
Why does the battery on my Hilti AG 4S-A22 Grinder run down more quickly than usual?
If the battery runs down more quickly than usual, it could be due to a very low ambient temperature. Allow the battery to warm up slowly to room temperature.
What to do if the battery doesn’t engage with an audible click on my Hilti Grinder?
If the battery doesn’t engage with an audible click, the retaining lugs on the battery may be dirty. Clean the retaining lugs and refit the battery.
General guidelines and warnings to ensure safe operation of the power tool.
Comprehensive safety advice covering work area, electrical safety, and personal safety.
Precautions to prevent electric shock while operating the power tool.
Guidelines for operator safety, including alertness, PPE, and proper dress.
Specific safety advice for various operations performed with the tool.
Information and precautions related to kickback forces and control.
Specific safety advice for grinding and cutting operations, including guard and disc usage.
Safety advice for sanding operations, focusing on disc paper size and hazards.
Safety advice for wire brushing, including bristle hazards and guard interaction.
Detailed steps for attaching and removing various accessory tools safely.
Procedure for securely attaching an accessory tool using the clamping flange and nut.
Instructions on how to safely detach an accessory tool from the spindle.
Guide for attaching accessories using the keyless Kwik lock nut.
Technique and safety advice for grinding operations.
Instructions for cleaning and maintaining the tool and its parts.
Table of common faults, their possible causes, and recommended actions.
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