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Up and Running articles │ Valmet
Insights
Reel secondary arm synchronization provides even loading
Secondary arm movements need to move at the same speed both when loading against a new spool and when unloading a full jumbo roll. Otherwise the roll may stop or come off the rails or yield loss may occur.
Insights ● ArticleExample pneumatic maintenance schedule - weekly, monthly, annual
While pneumatic components and systems normally require very little maintenance, regular inspections with minor adjustments are important. This schedule and tips are intended as a guideline.
Insights ● ArticleIncrease electrical safety before, during and after maintenance
Safe operation and maintenance of machinery requires alertness and safety consciousness on the part of all operating and maintenance personnel. This article reviews basic safety precautions for electrical maintenance.
Insights ● ArticleGood headbox flow sheet handling and installation prevent damage
Flow sheets are a critical part of headbox performance. They are brittle and must be handled with care. Flow sheets are used to adjust the turbulence level and scale generated in the headbox.
Insights ● ArticleProper setup of a pressure compensate pump and dump valve
Many hydraulic systems on the paper machine use pressure compensated pumps. Pump and pressure compensator adjuster setup is easy if you know what you are doing.
Insights ● ArticleElectrical troubleshooting basic tips and fault cataloging
Effective electrical troubleshooting is best done using a practical, systematic approach. This article is a brief review of basic tips and fault cataloging.
Insights ● ArticleSteam and condensate system audit for tissue machine Yankee dryer
The steam input and condensate removal system is integral to the efficient and effective operation of your Yankee dryer. A system audit shows the current operating level and provides savings recommendations.
Insights ● ArticleReading fluids circuit diagrams - pneumatic circuit examples
The previous articles in this series introduced fluids circuit elements and presented example hydraulic schematics. This article describes two example pneumatic schematic diagrams: winder lowering cradle safety pins and winder belted threader operation.
Insights ● ArticlePreventive unwind stand maintenance reduces waste and downtime
The unwind is responsible for several functions in the finishing process, including supercalendering, coating, and rewinding paper into a denser, more stable roll. During operation, it endures constant tension, high speed and vibration, which slowly take their toll. So proper maintenance is essential.
Insights ● Article