All information, illustrations and technical specifications in these operating instructions are based on the latest information available at the time of
publication. We reserve the right to make design changes at any time without prior notification.
75
7.0. Operation
7.6. Malfunctions and troubleshooting
7.6.2. Precise overseeding unit with brush unit
Description
Cause
Remedy
Poor continuous flow,
output rate too low or rotary
feeder shaft does not turn
Spreading material
contaminat- ed or clumpy,
foreign bodies in the
spreading material hopper
(e.g. packaging material)
Check the spreading material (re-
move through the discharge hatch,
see Chapter 8.10.2. "Spreading
material hopper").
Do not use spreading material with
impurities or clumps.
Check the hopper and rotary feed-
er shaft for contamination, clean if
necessary, see Chapter 8.10.3.
"Rotary feeder shaft".
Rotary feeder shaft does
not turn
Hopper, rotary feeders or
brushes heavily contaminated
Drive belt wear
Check hopper, rotary feeders or
brushes for contamination and
clean if necessary, see Chapter
8.10. "Main- tenance and
cleaning"
Check drive belt and renew if
neces- sary, see Chapter 8.10.4,
"Drive belt"
Blockage of particular
hoses
Excessive differences in hose
length means the air flow in
the blocked hose is too low
Install the hose at the far left.
Discuss the problem with the prod-
uct specialist, possibly install cus-
tomer-specific throttle orifices to
control the air flows
Hose routed with excessively
tight bending radius
Route the hose with the largest
pos- sible bending radius and as
few curves as possible
Blower does not function
Heavy contamination leads to
blockage
Clean the blower when dry, see
Chapter 8.10,6 "Blower".
Hose grommet does not
stay in place or fails to
engage
Pressure element in the
holder contaminated
Renew the pressure element if
nec- essary..
No signal from the wheel
sensor
Distance between the sensor
and wheel nuts too large
Check the distance and set if
neces- sary. Distance should be
less than or equal to 4 mm.
Contact problems
Check the wheel sensor/control
pan- el plug connection.
Check the cables..
Check the counting points.
No signal from the lifting
gear mag- netic sensor
Distance between the sensor
and magnet too large
Check the distance and set if
neces- sary. Distance should be
less than or equal to 8 mm.
Sensor installed in wrong
direction
Note the installation direction of
the sensor..
Check the cables
