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Fan with power take-off pump
Malfunction
Possible cause
Remedy
Bearing damage on fan
Normal wear
Fan run on excess power
Unbalance on wheel
Replace bearing
Never operate fan without pneumatic
tubes
Replace wheel or clean in case of
dirt
Shaft sealing ring on motor untight
Return pressure larger than 2 bar
Check return pressure
Hydr. oil overheated
Fan run on excess power
Oil filter dirty
Protective grid for fan dirty
Oil cooler dirty
Excess pressure valve set too low
Reduce power and check oil level
Check pressure on fan
Renew oil and oil filter
Clean protective grid on fan
Clean cooler slats
Correctly set pressure valve
Hydr. motor defective
Fan run on excess power
Hydraulic oil dirty
Reduce power and check pressure
on fan
Change hydraulic oil and filter
Power take-off pump bearing
rejected
Pump distorted or mounted not
tightly enough to the tractor
Renew bearing, mount pump tightly
and without tension
No air flow to the coulters
Air tubes blocked
Suction air grid dirty
Clean suction air grid