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Proper alignment of pulleys on conveyor frame.
Square belt end, repair splice.
Replacement may be required.
Recommend routine maintenance or mechanical cleaning devices.
Change feeder design or replace belt with more bulk. Check belt manufacturer’s specs.
Refer to CEMA Standard 402-1964 or check with technical of belt manufacturer.
Replacement of belt indicated.
Check with source for reconditioning and consider replacement with polyester or nylon fabrics.
If belt will not run straight under tension, a replacement may be necessary. (Normally, if the fill yarn is not perpendicular to the line of travel, it will not affect ability to track the belt.
Adjust or redesign
Frequent maintenance required for maximum belt life. Never use old conveyor belt as wiper.
Free or replace. Frequent maintenance required.
Recheck environmental conditions and check with technical or belt manufacturer.
Refer to “Tracking or training.”
Redesign or adjust loading conditions, scraper, plows and/or cleaning mechanisms.
V-guide may be required or change direction of loading.
Realign system, stiffer belt required or consider V-guide design or guide rollers.
Replace worn surfaces or clean through routine maintenance procedures.
Increase take-up adjustment. Increase belt wrap on drive, lag drive.
Free or replace
Keep clean through routine maintenance or mechanical devices.
Recalculate tension requirement. Change belt recommendation or drive design.
Replace pulleys or change belting recommendation
Check overall gauge of belt and system pulley sizes with fastener manufacturer’s recommendations.
Consider vulcanized splice, or change in drive or loading design.
Indicates system underbelted. Recalculate tension requirement.
Check all environmental conditions that might affect fabric service life.
Consider replacing cotton or rayon with nylon or polyester fabrics.
Double check environmental heat factors, available take-up, position of take-up on installation and cleaning procedures. Refer to technical or belt manufacturer.
Recalculate tension requirement. Change belt recommendations or consider changing drive design.
Check environmental conditions and consider replacing with nylon or polyester fabrics.
Keep pulleys clean with routine maintenance or mechanical cleaning devices.
Reduce tension to the point that belt will not slip or replace screw with automatic system.
Recalculate tension requirement.
Recheck environmental conditions and consider replacement with nylon or polyester fabrics.
Replace with larger pulleys
Refer to CEMA Standard 402-1964 or check with technical of belt manufacturer.
Check environmental conditions and refer to technical or belt manufacturer.
Adjust take-up position. Consider lagging drive pulley and installing snub pulley to increase belt wrap on drive pulley.
Weld 1/4″ or 1/2″ round rods to slider bed surface or perforate conveyor bed. Round off and smooth all surfaces in contact with belt.
Check with your distributor giving operational data and system profile.
Adjust take-up position and consider increasing wrap of drive with snub pulley and lagging drive pulley.
Check environmental conditions-especially oil and solvents. Refer to belt manufacturer’s complete operation and environmental data.
Advance take-up pulley toward maximum position.
Recalculate tension to select correct construction.
Check all pulleys, especially high tension snub or reverse pulley.
Determine surface temperatures and check against rated resistance of compound in service.
Check rated resistance of compound in service.
Check minimum pulley recommendations of belt in service. Replace pulleys or change belt recommendations.
Recalculate tension. Change belt recommendation or alter drive design.
Heat or chemicals causing loss of plasticisers and then elasticity.
Always store belting in cool, dry area on racks supported by shafts through belt core. Suggest replacements made with nylon or polyester core.
Check tracking. Increase lateral clearance.
Use belt with mildew inhibitor in rubber compounds
Reposition final idler pulley.
Reduce impact of material.
Return run should have scrapers ahead of tail pulley.
Replace with manufacturer’s recommended fasteners or change to large pulley size.
Replace fasteners and inspect regularly.
Correct take-up tension.
Replace belting or switch to larger diameter pulleys.
Reduce speed or use larger pulley to reduce “whipping” of belt around pulley. Switch to endless belt. Review engineering data and recalculate. Give special attention to fabric fill construction.
Ease take-up tension
Switch to larger diameter pulleys or replace with more flexible belt.
Reduce speed or increase pulley size.
Recalculate tension requirement. Carefully examine failed splice, have adhesions checked, review step length.
Adjust skirt boards often Use all rubber – NEVER old belting.
Adjustment to minimum clearance. taper so that space becomes greater toward head pulley so material can work out.
Improve delivery system to conveyor.
Adjust so gap between metal and belt increases in direction of belt travel to avoid jamming.
Use higher resistant quality polymer and adequate skim between plies.
Improve or remove crown pulley.
Carefully examine splice failure, have adhesions checked.
Conviber, Inc.
P.O. Box 301
644 Garfield Street
Springdale, PA 15144-0301
1-800-548-9315
