Hardi LX-MB Series Instruction Book

Contents

Hardi LX-MB Series Instruction Book Manual pdf 24 page image

24Transmission shaftCheck that the transmission shaft fulfills its security purpose, e.g. thatshields and protective tubes are intact.Anti-freeze precautionIf the sprayer is not stored in a frost- proof place you should take thefollowing precautions: Put at least 10 litres of 33% anti-freeze mixturein the tank and let the pump run a few minutes so that the entiresystem including spray hose are filled. Remove the glycerine filledpressure gauge and store it frost free in vertical position.The anti-freeze solution also hinders the O-rings and gaskets fromdrying out.Operational problemsIn cases where breakdowns have occurred the same factors alwaysseem to come into play:• Minor leaks on the suction side of the pump will reduce the pumpcapacity or stop the suction completely.• A clogged suction filter will hinder or prevent suction so that thepump does not operate satisfactorily.• Clogged up pressure filters will result in increasing pressure at thepressure gauge but lower pressure at the nozzles.• Foreign bodies stuck in the pump valves with the result that thesecannot close tightly against the valve seat. This reduces pumpefficiency.• Poorly reassembled pumps, especially diaphragm covers will allowthe pump to suck air resulting in reduced or no capacity.Therefore ALWAYS check:1. Suction, pressure and nozzle filters are clean.2. Hoses for leaks and cracks, paying particular attention to suctionhoses.3. Gaskets and O-rings are present and in good condition.4. Pressure gauge is in good working order. Correct dosage dependson it.5. Operating unit functions properly. Use clean water to check.