An evaporator / concentrator preventive maintenance schedule lists the checks and jobs done on the equipment at fixed intervals, how long each takes, and in what order of frequency, so problems are found before the evaporator / concentrator fails. This page gives the schedule used in the PlantOps360 task library for evaporator / concentrator (mee, falling film), which follows common industry practice for general-purpose equipment. It is also searched for as evaporator, multiple effect evaporator, MEE, falling film evaporator.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Evaporator / concentrator preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check temperatures, pressures, vacuum level and condensate quality; check for foaming or carry-over | 10 min |
| Weekly | Check vapour and condensate pumps and seals; check vacuum system | 20 min |
| Monthly | Check tube fouling by differential temperature; check steam traps and instruments | 45 min |
| Quarterly | Clean tubes or plates as indicated; check pump alignments | 90 min |
| Half-yearly | Inspect demister pads and sight glasses; check level instruments | 180 min |
| Annual | Open inspect and chemically or mechanically clean tubes; hydrotest as required | 720 min |
Evaporator / concentrator maintenance frequency and yearly workload
At the estimated times, one evaporator / concentrator needs about 111 hours of preventive maintenance a year. The biggest single job is “Open inspect and chemically or mechanically clean tubes; hydrotest as required” at 720 minutes, done annual. Multiply by the number of units you have to see the workload for your plant.
| Frequency | Tasks | Time per round | Hours per year |
|---|---|---|---|
| Daily | 1 | 10 min | 60.8 h |
| Weekly | 1 | 20 min | 17.3 h |
| Monthly | 1 | 45 min | 9.0 h |
| Quarterly | 1 | 90 min | 6.0 h |
| Half-yearly | 1 | 180 min | 6.0 h |
| Annual | 1 | 720 min | 12.0 h |
What goes wrong on an evaporator / concentrator without preventive maintenance
- Tube fouling and scaling
- Vacuum loss and leaks
- Vapour and condensate pump seals
- Carry-over from level control faults
What to watch between services
- Temperatures, vacuum and steam pressure
- Temperature difference across the effect
- Pump and seal condition
Safety and statutory notes for evaporator / concentrator maintenance
Steam and vacuum equipment needs isolation, draining and cooling before opening. Check pressure-vessel status for the shells.
Where an evaporator / concentrator preventive maintenance schedule is used
This equipment is used in the industries below. Each link opens the preventive maintenance schedule guide for that industry, and the maintenance software page where we have one.
- Preventive maintenance schedule for pharmaceutical plants · maintenance software for pharmaceutical · maintenance software for api bulk drugs
- Preventive maintenance schedule for chemical, fertiliser and petrochemical plants · maintenance software for chemical
- Preventive maintenance schedule for food, dairy and beverage plants · maintenance software for food processing · maintenance software for dairy
- Preventive maintenance schedule for agro, grain, edible oil and sugar plants · maintenance software for sugar and distilleries
- Preventive maintenance schedule for fmcg and consumer goods plants · maintenance software for fmcg
- Preventive maintenance schedule for packaging, paper and printing plants · maintenance software for packaging · maintenance software for paper and pulp
- Preventive maintenance schedule for textile and garment mills · maintenance software for textile
- Preventive maintenance schedule for water and wastewater utilities
Related equipment maintenance schedules
- Reactor preventive maintenance schedule
- Agitator / mixer / homogeniser preventive maintenance schedule
- Centrifuge preventive maintenance schedule
- Filter press / filtration unit preventive maintenance schedule
- Spray dryer preventive maintenance schedule
- Rotary dryer / tray dryer preventive maintenance schedule
- Distillation / absorption column preventive maintenance schedule
- Ball mill / hammer mill / pulveriser preventive maintenance schedule
Browse the full list of equipment preventive maintenance schedules (317 types).
Run this evaporator / concentrator schedule in maintenance software
In preventive maintenance software, each row above becomes a recurring task on the asset with its checklist, time estimate and parts. Tasks can be triggered by calendar date, running hours, meter readings or production cycles, each completed task is recorded with the person and date, and a failed check can open a work order. For the method behind it, read the guide to the preventive maintenance schedule, or use the free generator to get a 12-month plan for your whole equipment list.
Build my preventive maintenance schedule (free Excel)
Frequently asked questions
How often should an evaporator / concentrator be serviced?
In our schedule an evaporator / concentrator has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “Open inspect and chemically or mechanically clean tubes; hydrotest as required”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in evaporator / concentrator preventive maintenance?
It covers routine checks and jobs such as “Check temperatures, pressures, vacuum level and condensate quality; check for foaming or…”, “Check vapour and condensate pumps and seals; check vacuum system”, “Check tube fouling by differential temperature; check steam traps and instruments”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does an evaporator / concentrator need per year?
About 111 hours per unit per year at the estimated times in our library, including the daily checks done every day. Use it to plan workload, not as a benchmark.
Is there a free evaporator / concentrator maintenance checklist?
Yes. The table on this page is a ready checklist. The free preventive maintenance schedule generator turns it into a 12-month Excel schedule for your list of equipment, with monthly workload hours.