Hardi KS Series, Instruction Book

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12
Fault Probable cause Control / remedy
Liquid system
No spray from Air leak on suction. Check if red suction lid/O-ring are
boom when sealing.
turned on.
Check suction tube and fittings.
Check tightness of pump diaphragm
and valve covers.
Air in system. Fill suction hose with water for initial
prime.
Suction/pressure Clean filters.
filters clogged.
Check yellow suction pipe is not
obstructed or placed too near the
tank bottom.
Lack of Incorrect assembly. Agitation nozzles not fitted.
pressure.
Too little distance between yellow
suction pipe and tank bottom.
Pump valves blocked Check for obstructions and wear.
or worn.
Defect pressure Check for dirt at inlet of gauge.
gauge.
Pressure Filters clogging. Clean all filters. Fill with cleaner
dropping. water.
If using powders, make sure
agitation is on.
Nozzles worn. Check flow rate and replace
nozzles if it exceeds 10%.
Tank is airtight. Check vent is clear.
Sucking air towards Exessive agitation, turn off.
end of tank load.
Returns inside tank need relocation.
Pressure filters Clean all filters.
increasing. beginging to clog.
Agitation nozzles Check by turning agitation off/on.
clogged.
Formation Air is being sucked Check tightness / gaskets / O-rings
of foam into system. of all fittings on suction side.
Excessive liquid Turn agitation off.
agitation. Reduce pump r/min.
Ensure returns inside tank are
present.
Use foam damping addative.
Liquid leaks Damaged diaphragm. Replace. See Changing of valves
from bottom and diaghragms.
of pump.