Restoring output on a Netzsch bead mill within 24-hours of an EagleBurgmann mechanical seal failure with NASH’s guaranteed next-day assessment, repair and delivery service
Client challenge
After three years of trouble-free running, a coatings manufacturer experienced a sudden Netzsch LMZ Bead Mill EagleBurgmann MR1SF5-125 double seal unit failure that needed to be corrected urgently.
Working with Netzsch Mastermix’s own team, NASH not only delivered an exchange mechanical seal unit within a day but also pinpointed and helped to eliminate future product problems.
Our response
Our immediate response was to:
- Supply an exchange seal unit by guaranteed next day early morning delivery
- However, once the damaged seal was returned to NASH for assessment and repair, our team also detected: –
- Heavy internal product contamination
- Badly worn seal faces
- Heat-damaged o-rings
We also confirmed that:
- Production problems resulted in seal system pressures being exceeded
- Product entered the seal as a result
- Product contamination led to outboard seal failure and barrier fluid leaking to atmosphere
To compound matters:
- The client had isolated the seal system pressure switch to continue running the mill
- The seal was allowed to run dry, resulting in heavily worn faces and damaged o-rings
Benefits
- NASH ensured Netzsch Mastermix were able to restore their client’s production in 24-hours
- We identified the failure causes
- Our team made recommendations on how to operate the mill more effectively