Reverse Osmosis Ultrefiner — Maintenance & Filters
Keep your drinking water system performing like day one.
Simple steps to maintain your Ultrefiner, when to replace filters, and a short video walkthrough. Questions? Email service@pureh2ohealthywater.com.
✓ Yearly pre-filter & post-filter
✓ 3-5 Years membrane
✓ Fast-flush during tank refill
✓ Leak check after filter change
Maintenance schedule
| Component | When | Notes |
|---|---|---|
| Pre-filter | Every 12–18 months | Replace sooner if high sediment/chlorine. |
| Post-filter | Every 12–18 months | Maintains taste/VOC reduction. |
| RO membrane | Every 3–5 years | Confirm with TDS reading/performance. |
| System flush | During tank refill | Use fast-flush; return to normal after refill. |
Routine maintenance
- Drain tank via RO faucet until drips; allow to refill.
- Set drain to Fast Flush during refill, then return to normal.
- Inspect for leaks after any maintenance.
- Test TDS 1–2× per year.
Filter change (7 steps)
1
Shut off inlet and tank; open RO faucet to depressurize.
2
Loosen housings with spanner; remove used cartridges.
3
Replace O-rings if worn; lubricate with silicone-safe lube.
4
Insert new pre- and post-filters in correct positions.
5
Hand-tighten housings—do not overtighten.
6
Set drain to Fast Flush; turn on inlet; open tank & faucet; flush ~15 min.
7
Return drain to normal; allow 2+ hrs to refill. If membrane replaced, drain first tank.