Due to severe fouling inside the DuoStabilizer rolls of the first dryer group of its KM 6 board machine, Weig Karton has until now had to clean the stabilizer rolls once a year. This cleaning process is extremely laborious, as the approx. 130 mm thick tender side covers have to be dismantled every time. As production time increased the dirt on the rolls caused considerable difficulties.

To make cleaning easier, manholes were drilled into the tender side covers of five rolls as part of an on-site service by FRS OnSite. In addition, openings and covers were provided in the disks separating threading zone and rolls. These measures allow Weig Karton to save about 38 hours of cleaning work a year for each of the five rolls – around 190 hours in total.

The difficult part of this process was to drill through the particularly thick cover. However, Voith’s specialists were able to master this challenge thanks to their extensive experience. FRS OnSite carries out maintenance and inspection on rolls and cylinders directly on customer machines. This saves a lot of time and money. After just 80 man-hours, FRS OnSite successfully completed its work on KM 6 – considerably earlier than envisaged in the ambitious 96-hour scheduled program. It was also possible to dynamically balance the DuoStabilizer rolls during this mechanical service at the customer’s premises. This helps the machine run at optimum performance.

At its plant in Mayen, Germany, Weig produces board on two machines, KM 3 and KM 6. The 5.30 m wide KM 6 machine produces around 340,000 metric tonnes of plasterboard for the corrugated and plasterboard industry.