Autoclave Cleaning Schedule: Chamber, Seal, Reservoir and Filters
A routine for the parts clinic staff clean themselves — what to wipe each day, what to drain each week, and what to leave to the service engineer.
The schedule at a glance
Your manufacturer’s manual sets the exact intervals and products, and it overrides any general list — including this one. The schedule below is a typical pattern for a tabletop clinic autoclave; a clinic running many cycles a day may need the weekly tasks more often.
| When | Part | Task |
|---|---|---|
| Daily, before the first cycle | Door seal and chamber rim | Wipe with a soft, lint-free cloth dampened with distilled water; look for debris, cracks or flattening |
| Daily, before the first cycle | Clean-water reservoir | Check the level; top up only with water of the quality the manual specifies |
| Daily, end of day | Used-water tank and drain | Empty the used-water tank if it is not plumbed to a drain; check the drain hose is not kinked |
| Daily, end of day | Chamber | Take the trays out, let the chamber cool and dry, and wipe away any spots of residue |
| Weekly | Chamber, trays and tray holder | Clean with the maker’s approved cleaner and a non-abrasive pad; wipe down with distilled water; dry |
| Weekly | Chamber drain filter | Lift or unscrew it, rinse under running water and refit |
| Weekly or monthly | Clean-water reservoir | Drain, wipe out, rinse with distilled water and refill — sooner if you see film or discolouration |
| Monthly | Dust filter and casing | Clean the air-intake or dust filter; wipe the outside with a damp cloth |
| Monthly | Door seal | Inspect closely and note cracks, hardening or a permanent groove in the log |
| By reading or interval | Water-treatment cartridge | Replace when the conductivity reading rises or at the maker’s interval |
| Yearly, at service | Bacteria filter, door seal, valves | Replaced or serviced by the engineer, with calibration |
Read next Full maintenance and service checklist
How to clean the chamber and trays
1. Cool and switch off
Switch the machine off and let the chamber cool completely. A warm chamber bakes cleaner onto the walls and can burn hands.
2. Take everything out
Remove the trays and tray holder and clean them separately. Lift out the drain filter at the bottom of the chamber if your model has one.
3. Clean gently
Use a soft cloth or non-abrasive pad with the cleaner your manufacturer approves, or a mild neutral detergent. Pay attention to the chamber rim where the door seal sits.
4. Remove every trace of cleaner
Cleaner left behind becomes film in the chamber and stains on instruments. Wipe it off with a cloth dampened in distilled water, then dry the chamber.
5. Refit and test
Refit the filter, holder and trays. Some manufacturers recommend an empty cycle after chamber cleaning; then run the usual air-removal test before patient loads.
What not to use
- Chlorine bleach or any cleaner containing chlorides — chlorides cause pitting corrosion in stainless steel chambers and trays.
- Abrasive powders, scouring pads or steel wool, which scratch the chamber and give deposits somewhere to build up.
- Solvents or oils on the door seal unless the manual names them — they can swell or harden the seal.
- Tap or mineral water to rinse the chamber or fill the reservoir — the minerals become scale.
- Instrument detergents, disinfectants or lubricants poured into the reservoir to “clean” it.
Read next Which water to use
The water side: reservoir, tank and drain
Many cleaning problems start in the water. Standing water in a warm reservoir grows biofilm, and minerals from poor water settle as scale in the chamber, the valves and the steam generator.
- Drain and rinse the clean-water reservoir on a fixed day, and log it.
- If your model has a conductivity sensor or water-quality warning, treat the warning as a stop sign, not a reminder.
- Do not leave the used-water tank full overnight if it is not plumbed to a drain.
- Before a long closure, follow the manual — many recommend draining the reservoir and leaving it dry.
- If you use a water purifier or demineraliser, replace its cartridge or resin as it specifies.
Read next Water and reservoir faults
Keep a cleaning log
A cleaning log turns a routine into evidence. Keep it beside the machine with the daily test records; a simple table with these columns is enough.
- Date and time.
- Task done: seal wipe, chamber clean, reservoir drain or filter clean.
- What you saw: seal condition, residue, scale, odour or discoloured water.
- Initials of the person who did it.
- Any fault reported, and when the engineer was called.
Read next Writing an autoclave SOPServis autoclave (Bahasa Malaysia)
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Frequently asked questions
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