A high shear mixer granulator 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 high shear mixer granulator fails. This page gives the schedule used in the PlantOps360 task library for high shear mixer granulator (/ wet granulator), which follows common industry practice for general-purpose equipment. It is also searched for as high shear mixer, RMG, rapid mixer granulator, granulator.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
High shear mixer granulator preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check impeller and chopper seals, lid interlocks and for leaks; clean after batch | 5 min |
| Weekly | Check seal air or flush; check discharge valve and gasket condition | 15 min |
| Monthly | Check gearbox oil, bearings and drive belts; check motor current | 30 min |
| Quarterly | Check impeller and chopper clearance and wear; check bowl scratches | 60 min |
| Half-yearly | Replace shaft seals and gaskets; check pneumatic and interlock functions | 120 min |
| Annual | Overhaul: gearboxes, bearings and seals; calibrate torque or power sensors; requalification as per plan | 360 min |
High shear mixer granulator maintenance frequency and yearly workload
At the estimated times, one high shear mixer granulator needs about 63 hours of preventive maintenance a year. The biggest single job is “Overhaul: gearboxes, bearings and seals; calibrate torque or power sensors; requalification as per plan” at 360 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 | 5 min | 30.4 h |
| Weekly | 1 | 15 min | 13.0 h |
| Monthly | 1 | 30 min | 6.0 h |
| Quarterly | 1 | 60 min | 4.0 h |
| Half-yearly | 1 | 120 min | 4.0 h |
| Annual | 1 | 360 min | 6.0 h |
What goes wrong on a high shear mixer granulator without preventive maintenance
- Impeller and chopper seal leakage
- Gearbox and bearing wear
- Discharge valve not sealing
- Lid interlock faults
What to watch between services
- Seal air or flush pressure
- Motor current and noise
- Interlock function
Safety and statutory notes for high shear mixer granulator maintenance
Maintenance must not change the validated state. Follow cleaning and change-control procedures, and test interlocks on the schedule.
Where a high shear mixer granulator 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
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Browse the full list of equipment preventive maintenance schedules (317 types).
Run this high shear mixer granulator 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 a high shear mixer granulator be serviced?
In our schedule a high shear mixer granulator has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “Overhaul: gearboxes, bearings and seals; calibrate torque or power sensors; requalification as per plan”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in high shear mixer granulator preventive maintenance?
It covers routine checks and jobs such as “Check impeller and chopper seals, lid interlocks and for leaks; clean after batch”, “Check seal air or flush; check discharge valve and gasket condition”, “Check gearbox oil, bearings and drive belts; check motor current”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does a high shear mixer granulator need per year?
About 63 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 high shear mixer granulator 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.