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Fan with PTO-shaft driven pump
Malfunction
Possible cause
Remedy
Bearing damage on fan
Normal wear
Fan did run with excessive power
Unbalance in impeller wheel
Replace bearings.
Never run the fan without connected
pneumatic hoses.
Replace the impeller wheel or clean
from dirt.
Radial seal in motor leaking
Return flow pressure higher than
2 bar
Check return flow pressure
Hydraulic oil overheating
Fan did run with excessive power
Oil filter contaminated.
Fan grill soiled
Oil cooler dirty
Pressure relief valve set too low
Reduce the load and check the oil
level, check pressure on fan
Change oil and oil filter
Clean fan protection grille
Clean radiator fins
Correct the pressure valve setting
Hydraulic motor defective
Fan did run with excessive power
Hydraulic oil contaminated
Reduce the load and check pressure
on fan
Change hydraulic oil and filter
PTO-shaft pump worn out
Pump distorted and not sufficiently
fastened on the tractor
Replace the bearings, mount the
pump tightly but without distortion
No draught on coulters
Air hoses clogged
Intake air grid blocked with dirt
Clean the intake air grid