The ADF filter Guardian 50FM is the auto-darkening cartridge of the Böhler Welding Guardian 50FM Air, the flip-up version prepared for powered air systems. Light state shade 4, dark range shade 5-9 or 9-13, 50 x 100 mm viewing area, optical class 1/1/1/2 to EN 379. The shade range, grind mode and delay are set on the filter. The CR2450 battery is not included.
Technical specifications
| Catalogue number | 86697 |
|---|---|
| Brand | Böhler Welding |
| Compatible with | Guardian 50FM Air |
| Shades (DIN) | 4 (light state), 5-9 and 9-13 |
| Grind mode | yes, set on the filter |
| Delay | 0.1 s, 0.5 s, 0.9 s |
| ADF viewing area | 50 x 100 mm |
| Optical class (EN 379) | 1/1/1/2 |
| Switch-off | automatic after 15 min |
| ADF power supply | CR2450 battery (not included) |
| Operating temperature | -5 to +55 °C |
| Pack quantity | 1 pc. |
| Standards | EN 379:2003 + A1:2009, CE |
Who it is for
For Guardian 50FM Air users, including owners of the Guardian 50FM Air Kit, who need to replace a damaged filter. The manufacturer specifies it for MIG/MAG, TIG with inverters, MMA, AC/DC pulse welding and argon or helium shielding. The filter is not suitable for laser welding.
Key features
- Light state shade 4 and two selectable dark ranges: shade 5-9 or shade 9-13.
- Internal grind mode, selected on the filter.
- 3 delay settings: SLOW 0.9 s, MID 0.5 s, FAST 0.1 s, set with a switch on the filter.
- Sensitivity adjustable with a knob.
- 50 x 100 mm viewing area, optical class 1/1/1/2 to EN 379.
- No on/off switch: the filter shuts off automatically after 15 minutes without use.
- Operating temperature -5 to +55 °C, storage -20 to +70 °C.
Compatible with
- Böhler Welding Guardian 50FM Air flip-up welding helmet for PAPR powered air systems
- the Böhler Welding Guardian 50FM Air Kit, flip-up welding helmet with Guardian Air PAPR kit
Guardian 50 and 50M Air take the Böhler Welding ADF auto-darkening filter Guardian 50, 50M Air filter, Guardian 62 and 62F take the Böhler Welding ADF auto-darkening filter Guardian 62, 62F filter. More spare parts are in the Welding helmet parts category.
Replacing the ADF filter Guardian 50FM
- The CR2450 battery Böhler Welding ADF battery CR2450 Guardian, Evolution Vision, Evolution V80, Laser Guard is sold separately. Insert it as shown in the manual.
- The filter is held in the shell by a retainer with screw Böhler Welding ADF retainer with screw Guardian 50, 50M Air, 50FM Air. Replace a cracked or lost retainer together with the filter.
- At the back the filter is protected by the inner lens Böhler Welding inner lens Guardian 50FM Air (5 pcs), at the front by the front cover lens Böhler Welding front cover lens Guardian 50, 62, 62F, Laser Guard (10 pcs).
- The filter sits in the flip-up element Böhler Welding flip-up element Guardian 50FM Air (matt blue); underneath is the grinding visor Böhler Welding grinding visor Guardian 62F, 62F Air, 50FM Air (2 pcs).
Standards and certificates
Filter marking: CE 4/5-9/9-13 VA 1/1/1/2 EN379. Complies with EN 379:2003 + A1:2009 and PPE Regulation (EU) 2016/425.
Documents
- Guardian 50FM Air instruction manual (PDF, multilingual)
- Guardian 50M and 50FM Air Kit fact sheet (PDF, English)
- PPE and accessories catalogue 2023/24 (PDF, English)
Frequently asked questions
Is a battery included?
No. Filter 86697 is sold without a battery. You need a CR2450 battery Böhler Welding ADF battery CR2450 Guardian, Evolution Vision, Evolution V80, Laser Guard.
How do I set the delay?
With a switch on the filter you choose one of 3 settings: SLOW 0.9 s, MID 0.5 s or FAST 0.1 s.
Does it fit the Guardian 50 or 50M Air?
No. Those helmets use the Böhler Welding ADF auto-darkening filter Guardian 50, 50M Air filter with one range, shade 9-13.
How do I switch the filter off?
There is no on/off switch. The filter shuts off by itself after 15 minutes without use.
