Hardi LX-MB Series, Instruction Book

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24
Transmission shaft
Check that the transmission shaft fulfills its security purpose, e.g. that
shields and protective tubes are intact.
Anti-freeze precaution
If the sprayer is not stored in a frost- proof place you should take the
following precautions: Put at least 10 litres of 33% anti-freeze mixture
in the tank and let the pump run a few minutes so that the entire
system including spray hose are filled. Remove the glycerine filled
pressure gauge and store it frost free in vertical position.
The anti-freeze solution also hinders the O-rings and gaskets from
drying out.
Operational problems
In cases where breakdowns have occurred the same factors always
seem to come into play:
•
Minor leaks on the suction side of the pump will reduce the pump
capacity or stop the suction completely.
•
A clogged suction filter will hinder or prevent suction so that the
pump does not operate satisfactorily.
•
Clogged up pressure filters will result in increasing pressure at the
pressure gauge but lower pressure at the nozzles.
•
Foreign bodies stuck in the pump valves with the result that these
cannot close tightly against the valve seat. This reduces pump
efficiency.
•
Poorly reassembled pumps, especially diaphragm covers will allow
the 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 suction
hoses.
3. Gaskets and O-rings are present and in good condition.
4. Pressure gauge is in good working order. Correct dosage depends
on it.
5. Operating unit functions properly. Use clean water to check.