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Fault Possible cause Remedy
1. Braking action in brake motor
defective
a) Fine-wire fuse on printed circuit in
switch defective
b) Printed circuit in switch defective
a) Open switch and replace  ne-wire
fuse on wafer
b) Open switch, replace wafer. Adjust
brake current. See extra sheet
printed circuit. Electrical work
should only be carried out by an
electrician
2. Saw blade works loose after the
motor switches off
a) Fastening nuts not tight enough
b) Braking action too heavy
a) Tighten nuts M 20 left-hand thread
b) Correct brake current adjustment
Remove small stopper on switch
housing
Correct brake current sensitively
at potentiometer with small
screw-screwdriver
The saw blade must be stationary
8 - 10 sec. after switching off
motor
Reinsert stopper in switch
housing
3. Motor does not start
a) Main fuse defective
b) Extension cable defective
c) Terminals on motor or switch
defective
d) Motor or switch defective
a) Check mains fuse
b) See operating instructions Electrical
connection
c) Have checked by electrician
d) See operating instructions Electrical
connection
4. Motor runs forward or backwards
Capacitor defective
Have replaced by electrician
5. Motor without power, switches off
automatically
Overloaded through
a) blunt saw blade
b) 2-phase operation - motor overheats
a) Fit sharpened saw blade
b) Have extension cable and terminals
checked by electrician
6. Burnt spots on cutting face,
longitudinal cut
cross cut
a) Blunt saw blade
b) Wrong blade
c) Longitudinal feed stop not parallel
to saw blade
d) Slide not parallel to saw blade
a) Fit sharpened blade
b) Fit saw blade for longitudinal
cutting
c) Readjust motor to crossarm or
replace longitudinal feed stop
d) Align slide to saw blade
7. Wrong direction of rotation if three-
phase motor
Socket not correctly connected
Switch polarity at socket
Trouble-shooting plan
20


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