7.0. Operation
7.6. Malfunctions and troubleshooting
7.6.1. Basic unit plus chassis
Description
Cause
Remedy
Different working depths
achieved by the perforation
tools across the working
width
The side tension springs are
too powerful. Perforation
tools work deeper in the
centre
Release tension springs so
that an even hole pattern is
achieved across the entire
working width.
The side tension springs are
too weak. Perforation tools
work deeper on the outside
Tighten tension spring so
that an even hole pattern is
achieved across the entire
working width.
Perforation tools are
rubbing on the frame or
central receptacle brackets
The inner and outer
adjustment screws are
incorrectly adjusted
Adjust adjustment screws
(see Section 6.3.)
Adjustment screws are worn
in
Readjust screws to
measure
Pressure pads leave tracks
on the lawn surface.
Pressure pads are putting
pressure onto half shells
Reduce additional weight
Perforation tools are tearing Tools are working too low
Reduce the working depth
Working depth is set too low Ground is too dry
Use extra additional weight.
NOTE observe the overall
permissible weight.
Perforation tools are bent
Stony ground
Replace tools
Perforation tools (nails)
have too much clearance
Knock out bores in the half
shells
Replace half shells
Imprints in the roller tube
too deep
Replace roller tube
Half shells are impossible to
mount
Bores are not aligned
Premount 4 screws, push
half shell in one direction,
tension the 4 screw. Then
insert the remaining 2
screws and tension
