MACCHINE E
ACCESSORI
Pagina 38 di 43
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FE
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V
I
11
FAULT FINDING
PROBLEM
PROBABLE CAUSE
SOLUTION
Noisy operation
A)
Dry spindle
B)
Broken bearing
C)
Motor bolts loose
D)
Belts loose
A)
Remove the spindle and
lubricate
B)
Replace the bearing
C)
Tighten the screws
D)
Pull the belts
Excessive
wobbling
(eccentric rotation) of the
spindle.
A)
Loose spindle.
B)
Worn
spindle
shaft
or
bearings
C)
Broken spindle
A)
Tighten the spindle
B)
Replace the shaft or the
bearing
C)
Replace the spindle
The motor will not start
A)
Power supply
B)
Motor connection
C)
Connections of the switches
D)
Burnt motor windings
E)
Broken switch
A)
Check the mains power
supply
B)
Check
the
motor
connections
C)
Check
the
switch
connections
D)
Replace the motor
E)
Replace the switch
The tip is jammed in the
work piece
A)
Excessive pressure on the
feed hand-wheel
B)
Loose tip
C)
Speed is too fast
A)
Apply less pressure
B)
Tighten the tip
C)
Change the speed
The tip is burning or
smoking
A)
Incorrect speed. Revolutions
per minute.
B)
Shavings will not discharge
C)
Tip is worn or does not cut
the material well
D)
Needs lubrication
E)
Incorrect feeding pressure
A)
See table speed
B)
Clean the tip
C)
Check the sharpness and
taper
D)
Lubricate while drilling
E)
Apply less pressure
The tip vibrates, the hole is
not round
A)
The tip was sharpened off
centre
B)
Bent tip
A)
Sharpen the tip correctly
B)
Replace the tip
The temperature of the
spindle holder is too high
A)
Insufficient lubrication.
A)
Lubricate
the
spindle
holder.
The spindle will not stick to
the sleeve
A)
Dirt, grease or oil in the
morse taper
B)
You
are
executing
an
unauthorized operation
A)
Use detergents (alcohol,
etc.) to clean the conical
part of the spindle
B)
Milling operations causing
the fall
fervi.com
