Troubleshooting - Holzmann Ed750Fd Betriebsanleitung

16

TROUBLESHOOTING

Disconnect the machine from the power supply prior to any checks performed at the
machine itself !
Trouble
Machine does not start
Machine does not come
up to speed
The machine vibrates
strongly
Turning tool has a short
life
Cutting breaks out
Twisted threads wrong
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
TROUBLESHOOTING
Solution
Seite 41