Holzmann ED 750 FD - 16 Troubleshooting Guide

TROUBLESHOOTI NG
HOLZMANN MASCHINEN GmbH www.holzmann-maschinen.at
Seit e 4 1
METALLDREHMASCHINE / METAL TURNING LATHE ED 750FD
1 6 TROUBLESHOOTI NG
Disconnect the m achine from the pow er supply prior to any checks perform ed at the
m achine itself !
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
Cutt ing 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 iste d 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