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