Definition · 5 min read
RO maintenance schedule: a definition and a starting table
What an RO maintenance schedule is, what it covers and a starting table of checks by interval, to adapt for each plant.
By the AquaOps team
An RO maintenance schedule is a written plan of the checks, cleanings and replacements a reverse osmosis (RO) plant needs, and how often each is due, so that every visit is booked before it is needed and recorded afterwards. It is made per plant, because feed water, size and use differ.
A starting table
Treat this as a starting point and adjust for each site and for the manufacturer’s data.
| Interval | What | Notes |
|---|---|---|
| Every visit | Readings (feed and product TDS, pressures, flows, temperature), leaks, noise | Compare with commissioning values |
| Monthly or quarterly | Routine check, consumable levels, quick clean | The most valuable and most skipped visit |
| By pressure drop, with a time limit | Sediment and carbon pre-filters | Replace and record before and after |
| On evidence, reviewed yearly | Membrane clean or replacement | Falling flow, rising salt passage or pressure drop |
| Yearly | Pump, valves, gauges, tank clean, UV lamp, sanitise | Full report to the customer |
How to build one for a plant
- Write down the stages of the plant (pre-filters, carbon, softener or antiscalant, membranes, pump, tank, UV) and the manufacturer’s service advice for each.
- Record the commissioning readings: feed and product TDS, pressures and flows. Every later decision is compared with them.
- Choose an interval for each stage, and a rule for changing it, such as a pressure-drop limit for pre-filters.
- Attach the schedule to the plant, not to the client: a client with three plants has three schedules.
- Review it after the first year, using the readings you collected.
Why a schedule is not enough
A schedule only works if the visit actually happens. That is why companies move it from a notebook to a system that books the visit ahead of the due date, reminds the customer and moves the due date on after the visit. See maintenance plans and the RO plant software page. For the reasoning behind the intervals read how often should an RO plant be serviced, and use the maintenance checklist template for each visit.
Questions and answers
- What is an RO maintenance schedule?
- An RO maintenance schedule is a plan of the checks, cleanings and replacements a reverse osmosis plant needs, and how often, so each visit is booked before it is due.
- How often should an RO plant be serviced?
- There is no single interval. Pre-filters are changed by pressure drop with a time limit, membranes are cleaned or replaced on evidence, and a full service is usually yearly. Follow the manufacturer's data sheet for your plant.