Please read this instruction manual carefully and follow all installation, operating and safety guidelines.
50
PICO-155S Precision Saw
I
NSTRUCTION
M
ANUAL
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3601 E. 34th St. Tucson, AZ 85713 USA Tel. +1 520-882-6598 Fax +1 520-882-6599 email: [email protected] Web: http://www.metallographic.com
9.4 TROUBLE SHOOTING GUIDELINES
TABLE V. Trouble Shooting Guidelines for Wafering Cutting
Symptoms
Cause
Action
Saw does not appear
to turn on
-Hood magnet not
engaging lower magnet
-Sample arm is engaging shut-
off switch
-Emergency stop button is
engaged
-Close hood
-Lift sample arm
-Release button by turning clockwise
Other reasons why
saw does not turn on
-Power not set to correct
voltage
-Fuse blown
-Set switch on back of saw to correct
incoming voltage
-Replace fuse
Blade is easily
chipped or is braking
-Improper blade dressing
-Insufficient sample clamping
-Cutting force initially too high
-Use mechanical dressing fixture
-Secure specimen with rubber pad
-Reduce initial force to set cutting kerf
Excessive blade
wobble
-Cutting force to high
-Flanges dirty or not parallel
-Reduce applied force and/or use larger
diameter support flanges
-Clean or replace flanges
Low cutting rates
-Smeared material on the
blade
-Cutting speed and/or force
is too low
-Redress blade at <100 grams and <200 rpm
-Increase cutting speeds and applied force
-Rotate specimen to minimize cutting area
Excessive
specimen damage
or chipping
-Too large an abrasive
-Excessive vibration
-Use finer grit diamond blade
-Secure specimen with rubber mounting pad
Burr formation on
specimen at the end
of the cut
-Cutting force or speed too
high at the end of the cut
-Excessive vibration
-Reduce speed and cutting force to reduce
cutting rate
-Secure sample with rubber mounting pads
