9 Troubleshooting
EN Wall, ceiling and floor grinding machine WDS 250
WDS250‐en‐220909
21
9 Troubleshooting
Only suitably knowledgeable, qualified technicians may perform repairs on the grinding machine.
Malfunction
Cause
Rectification
Grinding machine will not
start.
The guiding machine is not in opera
tion.
Put the guiding machine into opera
tion (
!
operating manual of the gui
ding machine).
The guiding machine is not in opera
tion. An EMERGENCY STOP button
of the guiding machine has been
pressed.
Determine the cause for the
emergency stop and rectify if ne
cessary.
Release the EMERGENCY STOP
button afterwards (
!
operating ma
nual of the guiding machine)
The grinding drive stops du
ring the grinding.
The maximum hydraulic drive output
was exceeded. The safety valve has
switched off the grinding drive.
Use other grinding tools.
The manufacturer of the grinding
machine can gladly provide
corresponding recommendations.
Reduce the contact pressure
(
!
Chapter 3.2, Pos. 5., Page 10).
Suction capacity is too high.
The vacuum causes excessive con
tact pressure on the tools.
Reduce the suction capacity.
The grinding pattern is un
even.
Tools are loose.
Fasten grinding tools
(
!
Chapter 4.4, Page 15).
Tools are damaged or worn.
Replace grinding tools
(
!
Chapter 4.4, Page 15).
Tools are not suited for the material of
the surface.
Use other grinding tools
(
!
Chapter 4.4, Page 15).).
The manufacturer of the grinding
machine can gladly provide
corresponding recommendations.
The
guiding machine is not parallel to
the wall or is not at the correct dist-
ance from the wall.
Position the
guiding machine
correctly
(
!
Chapter 3.1, Page 7).
The grinding machine is
emitting loud whistling noises.
Note:
T
he very brief whistling noises during
machine start‐up are no cause for
concern.
The grinding tools are moving
irregularly or not at all.
The contact pressure is too high.
Reduce the contact pressure
(
!
Chapter 3.2, Pos. 5., Page 10).
A large amount of the ground
material is not vacuumed
away and clogs up the grin
ding machine head.
The exhaust line does not have the
capacity to vacuum away the ground
material quickly.
Use several suction machines
(max. 4) with separate, short suction
hoses (
!
Chapter 3.1, Pos. 7.).
The manufacturer recommends using
suction devices with a suction capa
city of approx. 500 m3/h ... 2200
m3/h.