imaport Siena SN270BT Manual De Instrucciones página 56

FAULT
Steaked or etched bands
Cuts off the straight
PROBABLE CAUSE
Blade guide pads not regulated or dirty
because of lack of maintenance.
Blade guide block too far from material to
be cut.
Improper position of blade on flywheels.
Insufficient lubricating coolant or wrong
emulsion.
Damaged or chipped blade guide pads.
Tight or slackened blade guide bearings.
Blade not parallel as to the counter
service.
Blade not perpendicular due to the
excessive play between the guide pads
and maladjustment of the blocks.
Too fast advance.
Worm out blade
Wrong tooth pitch
REMEDY
Check distance between pads
adjustments in the Blade Guide Blocks
section): extremely accurate guiding may cause
cracks and breakage of the tooth. Use extreme
care when cleaning.
Approach head as near as possible to material to be
cut so that only the blade section employed in the
cut is free, this will prevent deflections that would
excessively stress the blade.
The back of blade rubs against the support due to
deformed or poorly welded bands (tapered),
causing cracks and swelling of the back contour.
Check level of liquid in the tank. Increase the flow
of lubricating refrigerant, checking that the hoe
and the liquid outlet pipe are not blocked. Check
the emulsion percentage.
Replace them.
Adjust them see Chapter
Adjustments in Blade guide section).
Check fastenings of the blade guide blocks as to
the counter vice so that they are not too loose
and adjust blocks vertically
position of the degrees and if necessary adjust
the stop screws of the degree cuts.
Check and vertically re-adjust the blade guide
blocks reset proper side guide play
Chapter Machine adjustments
section
Degree advance, exerting less cutting pressure .
Adjust the braking device.
Approach it as near as possible to material to be
cut so that only the blade section employed in the
cut is free, this will prevent deflection that would
excessively stress the blade.
Replace it. Blade with major density of teeth is
being used try using one with less teeth (see
Chapter Material classification and blade
selection in the Blade Types section
see Machine
Machine
bring into line the
see
in Blade guide