Husqvarna EP 121B Operator's Manual

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Problem Cause SolutionThe air goes directlythrough the exhaust or theproduct vibrations are slow.The rotor is blocked. Shake the tube carefully when the tube is pressurized.The air pressure is too lowto start the product.Measure the air pressure. Refer toTechnical data onpage 10.The air flow is too low tostart the product.Measure the air flow. Refer toTechnical data on page10.There is a leak in the airhose.Attach the clamps correctly on the air hose.Replace the air hose if it is necessary.The product is not suffi-ciently lubricated.Lubricate the product. Refer toTo lubricate the producton page 6.The lamella is worn out. Replace the lamella.The product is not attachedcorrectly.Attach the product correctly. Refer toTo operate theproduct on page 6.The vibration of the con-crete is not constant.The centrifugal force is toolow.Change to a product with more power.The air exhaust is blocked. Remove the blockage. Clean the air exhaust.The air pressure is too low. Measure the air pressure. Refer toTechnical data onpage 10.The product is not attachedcorrectly.Attach the brackets correctly to the concrete form. Exam-ine the bolts after 15 minutes of operation. Tighten thebolts if they are loose.Attach the product with the correct bolts to the brackets.The number of productsused is not sufficient.Add products were vibration is missing.The correct product is notused.Attach high frequency products to a vertical concreteform.Attach lower frequency products to a horizontal concreteform.The air hose is too long. Refer to the operator's manual for the air compressor forcorrect length.The concrete form is notsufficiently rigid.Make the concrete form more rigid.The product does not oper-ate correctly in a dusty en-vironment.There is sand or dust in theproduct.Disassemble and clean all the parts with fuel. Then lubri-cate all parts and assemble the product.The air exhaust is blocked. Remove the blockage. Clean the air exhaust.8 1579 - 001 - 18.12.2020