AGSZ 18-90 LBL AS - Grinder Fein - Free user manual and instructions
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| Product type | Cordless straight grinder (die grinder) |
| Brand | Fein |
| Model | AGSZ 18-90 LBL AS |
| Rated voltage | 18 V |
| Battery type | Lithium-ion 18 V AMPShare |
| Battery system | AMPShare (compatible with partners) |
| No-load speed | Up to 90,000 rpm (depending on wheel) |
| Weight (without battery) | Approx. 0.6 kg |
| Weight with battery | Approx. 1.0 kg (depending on battery) |
| Max. shank diameter | 6 mm (collet chuck) |
| Max. protruding shank length | See manufacturer's instructions (approx. 20 mm) |
| Authorized applications | Grinding, milling, cutting, wire brushing, polishing |
| Restart protection | Yes (restart interlock) |
| LED light | Yes (integrated light) |
| Collet chuck supplied | Yes (one standard collet) |
| Battery charge indicator | Yes (LED on battery) |
| Kickback control | Yes (controlled reaction torque) |
| Recommended maintenance | Blow out ventilation slots with dry compressed air |
| Manufacturer warranty | In accordance with applicable legislation + FEIN declaration |
Frequently Asked Questions - AGSZ 18-90 LBL AS Fein
What types of batteries can I use with the Fein AGSZ 18-90 LBL AS?
Use only Lithium-ion 18 V batteries from the AMPShare system (FEIN or partners). Batteries from other brands or damaged batteries pose a fire risk.
How to change the collet chuck?
First remove the battery. Unscrew the collet nut with the supplied wrench, insert the new collet matching the wheel shank (6 mm or other), then retighten firmly. Ensure the shank is pushed in all the way.
What to do if the grinder does not start?
Check that the battery is charged and properly inserted. If the tool does not start after inserting the battery, the switch may have been left on: turn it off, remove the battery, then reinsert it. The restart interlock prevents unintentional restart.
What accessories are recommended for polishing?
Use polishing bonnets suitable for the wire brush or wheel holder. Before use, check that the retaining wires are secure to avoid snagging. The AGSZ 18-90 LBL AS model is designed for polishing.
How to maintain the ventilation slots?
After each prolonged use, especially on materials like plaster, blow dry, oil-free compressed air into the ventilation slots to prevent accumulation of conductive dust.
Is the grinder suitable for cutting metals?
Yes, with appropriate cut-off wheels. Follow safety instructions: do not apply excessive pressure, support the workpiece, and do not jam the wheel.
How to interpret the battery charge indicator?
Press the button on the battery. The number of green LEDs lit indicates the charge level: 3 LEDs = full charge, 1 LED = low charge. If no LED lights up, the battery is defective and must be replaced.
Can I use wheels with a shank diameter larger than the collet capacity?
No, the shank diameter must exactly match the collet. An improperly fitted wheel can come off and cause serious injury.
What to do in case of smoke emission or excessive heat?
Immediately stop the tool and remove the battery. Do not continue to use a battery that shows any odor, discoloration, or deformation. Contact an authorized FEIN service center.
How to store the tool and battery?
Store the battery and tool in a dry place, away from heat (between -20 °C and +50 °C). Remove the battery before transport or storage. Do not leave the battery in direct sunlight or in a car in summer.
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