Hardi LZ Series Instruction Book

Contents

Hardi LZ Series Instruction Book Manual pdf 27 page image

27Changing of ball seat in operating unitIf problems with on/off valve occurs (e.g. dripping nozzles when on/offvalve is closed), the ball and ball seat should be checked.Remove the 2 boltsfixing the on/off-pressure valve unitto the bracket,unscrew the unionnut A and pull theon/off-pressurevalve away from thedistribution valves.Check the ball for sharp edges and scratches and check the ball seatfor cracks and wear - replace if necessary.Check of valve cone in distribution valvesPeriodically check the distribution valves for proper sealing.Run the sprayer with clean water andopen on/off and all distribution valves.Cautiously remove clip A and hose B forthe pressure equalization device. Whenthe housing is drained, there should beno liquid flow through the pressureequalization device. If there is anyleakage, the valve cone E must bechanged.Remove the clip C, and lift the EC motoroff the valve housing. Then unscrew thescrew D and replace the valve cone E.Reassemble in opposite sequence.