Troubleshooting - Holzmann ED 750 FD User Manual

1 6 TROUBLESH OOTI N G
D iscon n e ct t h e m a chin e fr om t h e pow e r su pply pr ior t o a ny ch e ck s pe r for m e d a t t h e
m a ch in e it se lf !
Trouble
Machine does not st art
Machine does not com e
up t o speed
The m achine vibrates
st rongly
Turning t ool has a short
life
Cut t ing breaks out
Tw isted threads w rong
HOLZMANN MASCHINEN GmbH www.holzmann-maschinen.at
Possible cause

machine is not connected

fuse or contactor broken

cord is damaged

Extension cord too long

Not suitable for existing motor
voltage

weak power grid

Stands on uneven ground

Engine mounting is loose

Hard casting skin

At high cutting speed

Too large an advance

Insufficient cooling

Wedge angle is too small (heat
congestion)

Grinding cracks by improper coo-
ling

Excessive play in the spindle bear-
ings (vibrations occur)

Thread turning tool is incorrectly
clamped or sanded wrong

Incorrect pitch

Wrong diameter

Check all electric connections

Change fuse, activate the contac-
tor

Replace cable

Exchange on optional extension
cable,see wiring box cover for cor-
rect wiring

Contact the electrician

Reconstitute

Tighten the fixing screws

Cast skin before break

Select cutting speed lower

Lower delivery (finishing allow-
ance not more than 0.5 mm)

More cooling

Choose wedge angle greater

uniformly cool

Adjust play in the spindle bear-
ings. If necessary, replace tapered
roller bearings.

Setting the turning tool on center

Grind angle correctly

Set the correct slope

Pre-turns workpiece to exact di-
ameter
METALLDREHMASCHINE / METAL TURNING LATHE ED 750FD
TROUBLESH OOTI N G
Solut ion
Se it e 4 1