Minnesota Power was experiencing vibration problems on their Air Pre-Heaters. In an effort to correct this problem, Minnesota Power implemented a preventative maintenance procedure that required all couplings to be re-greased during every outage.
Each re-greasing would tie up 3 Maintenance Technicians for 3 days. Worse yet, the reduction in vibration levels that was accomplished by the regreasing would only last a couple of weeks before the vibration would return.
MagnaDrive approached Minnesota Power with a proposal to replace the existing couplings with MagnaDrive Magnetic Couplings.
Minnesota Power’s vibration problems on their Air Pre-Heaters have been completely eliminated. Estimated savings based on quarterly outages and 9 mandays per outage is: 4 outages X 9 man-days/outage X $600 /man-day = $21,600 annually!
Minnesota Power Cohassett, MN
- Vertical Market: Power Generation
- Application Type: Equipment/Machinery
- Product: Magnetic Coupling, Total of 4 in use
- Load Type: Air Preheater
- Motor Characteristics: 40 hp 1800 rpm
- Thermal Shaft Expansion
- Vibration Isolation
- Reduced Maintenance