Facts & Figures Book - KPI-JCI

TROUBLESHOOTING GUIDE:HIGH FREQUENCY SCREENS (cont.)SCREEN-CLOTH IS BLINDINGCAUSE SOLUTION1. Material is too wet for the 1. Reduce feed ratefeed rate2. Oil flow to vibrators is not 2. Check and adjust vibratorsset properlyto proper settings3. Screen angle may need to 3. Increase angle of screenbe steeper (not to exceed 43°)4. Spread of material is not 4. Material needs to be spreadeven across screen panel across entire screen panelfor proper screening5. Weights in vibrators need to 5. Adjust weights to a highincreasedsettingMATERIAL FLOWS DOWN CENTER ORTO ONE SIDE OF SCREENCAUSESOLUTION1. Material is not centered on 1. Center material on feedfeed conveyorconveyor2. Aggregate spreader needs 2. Adjust position of aggregateto be adjustedspreader in or out toheadpulley of feed conveyorAdjust angle irons onaggregate spreader toachieve proper spread onscreen3. Side seal strips set too high 3. Adjust side seal strips to thesame height as the tappets4. Screening plant may not be 4. Check level of plantlevelScreenin g137