HOLZMANN MASCHINEN ED300ECO Instrucciones De Servicio página 59

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
HOLZMANN MASCHINEN GmbH
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
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Remedy
Check all electrical connections

Change fuse, activate contactor

Replace cable

Check spindle protection

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
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ED300ECO