Fan with
Hydraulic
driven pump
Malfunction
Possible cause
Remedy
Bearing damage on fan
Normal wear
Fan did run with excessive power
Unbalance in impeller wheel
Replace bearing
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
Reduce power and check oil level
Check pressure on fan
Change oil and oil filter
Clean fan protection grille
Clean radiator fins
Avoid unnecessary cooling power,
reduce the drive speed
Hydr. motor defective
Fan did run with excessive power
Hydraulic oil contaminated
Reduce the load and check pressure
on fan
Change hydraulic oil and filter
No draught on coulters
Air hoses clogged
Intake air grid blocked with dirt
Clean the intake air grid
Coulter pressure
The coulter pressure is hydraulically generated
by the Seed on Demand fan.
For this reason the fan must be switched on
when adjusting the coulter pressure.
The coulter pressure can be adjust6ed in the
E-Manager.
The coulter pressure can be read in the pressure
gauge on the front of the seed wagon. It is only
available when drilling.
Checks and maintenance
¾
Ensure a free flow return pressure of max.
2 bar.
¾
Check the oil level.
¾
Clean fan protection grille and radiator fins
from dirt.
¾
Clean fan blades from dirt.
¾
Change oil and filter, if required.
¾
Retighten the clamping tapers on the fan
shafts (see chapter Fan Flange).
The radiator fins must be cleaned at
regular intervals, as otherwise the cool-
ing and fan air flow will be reduced. The
hydraulic oil could overheat and cause
clogging of the seed hoses.
57
