SEC 03 // GUIDES INDEX · 5 RECORDS
Guides
Longer answers to the questions part listings can't answer: what to do when a battery dies, which generation trap you're about to walk into, and how to keep a discontinued system alive (or know when not to).
- 01 When to change Adflo filters: condition-based, not calendar-based2026-07-13
3M's own Adflo documentation ties filter replacement to the loading indicator, alarms and visual inspection — not a fixed number of months. What the manual actually says to watch for, part by part.
- 02 PAPR fit testing in the UK: when it applies and when it doesn't2026-07-13
Face-fit testing under UK COSHH rules applies to tight-fitting RPE (EN 12942), not loose-fitting welding PAPR hoods and helmets (EN 12941) — but loose-fitting users still carry pre-use, maintenance and record-keeping duties. What applies to which.
- 03 Adflo battery guide: 35-1099-07 vs 837631 — and what to do when yours dies2026-07-04
The Adflo battery supersession chain (837620 → 35-1099-07 → 837631), official runtimes and charge times from 3M's own manual, and an honest comparison of OEM replacement vs rebuild vs power-tool adapter.
- 04 Miller PAPR Gen 1 vs Gen 2: the 287178 / 244131 battery trap2026-07-04
Miller's Gen 2 PAPR II battery (287178) does not fit Gen 1 blowers, which need the 244131. How to identify your generation before ordering parts.
- 05 Speedglas 9000 / 9002 Fresh-air rescue guide: what still exists, and when to retire it2026-07-04
Parts reality for the discontinued Speedglas 9000/9002 helmets with Fresh-air and legacy Adflo: what's still obtainable, what superseded what, and when the honest answer is to upgrade.