ROUTINE MAINTENANCE Routine maintenance is necessary in our industrial environment. Adjusting rolls is one of the most common things you will do. CPM recommends a skip-touch ad -justment of the rollers to the die, where the roller barely skips across the die as it’s rotating to maximize die life. While a tight adjustment of the rollers to the die may be less prone to plug, it does cause accelerated wear and fatigue on the die. Rolls have a harder surface than the die, so the metal-on-metal contact will quick-ly wear the die, and cause die rollover. Die rollover is when the holes become partially blinded over by metal, which re-duces capacity, causes plugging. Enough increased face pressure can lead to die failure. Die rollover can also be a sign of die movement. As die movement occurs, rolls will contact the die face causing rollover. Changing dies is a great op -portunity to do some preventative main-tenance on die movement. Clean die clamps and the quill flange, and measure wear on these parts with a wear gauge. Check the die, wear ring, clamps, and die pilot for any shiny areas as this is a warning that something is worn or loose. Check the key and die keyway for signs of hammering, wear, or movement. Ap -propriate parts should be replaced imme-diately to prevent continued movement of the die. Coat mating surfaces with anti-seize compound, and use the recom-mended torque on the bolts or clamps. Make sure to recheck after one shift, and do not overtighten. Wipers and deflectors are there to pro -tect your equipment, and maintain even wear, extending the life of your parts. Wipers take feed from the rear of the die and spread it back onto the die surface, and help keep material out of the main-shaft seal. A close adjustment will prevent build up and slugs of material coming loose. Slugs of material should be avoid -ed as it can cause plugging and premature parts failure. Deflectors take material off the feed cone and direct it across the die face. Ide -ally each roll gets equal feed, resulting in even wear of rolls and smooth operation C M Y CM MY CY CMY K Combustible Dust Specialists NFPA68 NFPA69 NFPA77 NFPA91 NFPA499 NFPA654 NFPA664 Allied brings 49 years experience to help you meet current NFPA Standards with: system design/documentation, spark detection, isolation, grounding, PLC, venting, blast path management, clean-up systems and duct audits — CWB certified and member SMACNA. Sawmill – Biomass – Boardplants – Pulp & Paper – Power Generation – Mining 49 years of Industrial Air Systems www.alliedblower.com Phone: 800-576-3611 2023-06-15 4.875in x 4.75in-Detroit Comb Equip-Canadian Biomass copy.pdf 1 6/16/2023 10:57:34 AM Surrey,BC Vernon,BC WilliamsLake,BC Edmonton,Alberta PrinceAlbert,Sask Mobile, Alabama CFI_AlliedBlower_MarApr23_CSA.indd 1 2023-03-22 8:57 AM Canadian BIOMASS CB_DetroitStoker_Summer23.indd 1 2023-06-19 11:21 AM 21
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