HOLZMANN MASCHINEN ED1000KDIG Mode D'emploi page 87

23 TROUBLESHOOTING
Danger due to electrical voltage! Manipulating the machine with the power supply
up may result in serious injury or death. Before carrying out any troubleshooting work,
always disconnect the machine from the power supply and secure it against
unintentional recommissioning.
Many possible sources of error can be excluded in advance if the machine is properly connected to
the mains.
If you are unable to carry out necessary repairs properly and/or do not have the required training,
always consult a specialist to solve the problem.
Fault
Machine does not start
Machine does not reach speed
Machine vibrates strongly
Lathe tool has a short tool life
Cutting edge breaks out
Turned thread is wrong
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WARNING
Possible cause
Machine is not connected

Fuse or contactor broken

Cable damaged

Safety device not locked

 Extension cable too long
 Motor not suitable for existing
voltage
 weak power network
Stands on uneven ground

Motor mounting is loose

Hard cast skin

Too high cutting speed

Too large infeed

Too little cooling

 Wedge angle too small (heat
build-up)
 Abrasive cracks due to incorrect
cooling
 Too much play in the spindle
bearing (vibrations occur)
 Thread chisel is incorrectly
clamped or incorrectly ground
 Incorrect thread pitch
 Incorrect diameter
TROUBLESHOOTING
Remedy
Check all electrical connections

Change fuse, activate contactor

Replace cable

Check spindle protection /

gearbox cover
Exchange to suitable extension

cable
See switch box cover for correct

wiring
Contact electrician

Level new

Tighten the fixing screws

 Break casting skin beforehand
 Choose lower cutting speed
 Lower infeed (finishing
allowance)
not more than 0.5 mm)
 More cooling
 Select a larger wedge angle
 Uniform cooling
 Adjust play in the spindle
bearing. Replace tapered roller
bearing if necessary.
 Set lathe tool to centre
 Grinding angles correctly
 Set the correct gradient
 Pre-turn workpiece to exact
diameter
ED1000KDIG | ED1500KDIG
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