All mounting flanges are carefully machined to ensure level positioning of the coils and plungers. Many thousands are in daily use all over the world. The copper coil inside the upper cover creates an electromagnetic field which lifts the steel plunger to a selected height. When the current stops, gravity accelerates the plunger downward, striking the rapper shaft to clean away dust deposits. Impact is variable from 0 to 20 foot-lbs of energy to match any cleaning needs.
Top cap is removable for quick coil replacements.
Epoxy encapsulated coil is impervious to water and dust. Plungers are available in 8 or 20 lb. Typical plunger usage is 20 lbs. Machined mounting flanges ease leveling. All parts are individually replaceable.