Hyd-Mech PH 211, Use And Maintenance Manual

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10--7 85 Troubleshooting
SOLUTION PROBABLE CAUSE PROBLEM
'
Blade weld fault
.
The point at which a blade is
welded is its most critical
point; problems could be
caused by welds which are
not aligned perfectly or have
inclusions or blowholes
'
Free blade guide head
.
The head is too far away
from the workpiece: move the
head closer, leaving free only
that part of the blade actually
needed to make the cut
'
Teeth in contact with the ma-
terial before starting the cut
.
Always check the position of
the blade before starting a
new job, especially for the
semi--automatic cycle
'
Widia inserts
.
If worn, the inserts can score
the blade, weakening it even
to breaking point. If the in-
serts are too far apart, the
blade will whip, striking both
the inserts and the material.
Replace or adjust
'
Insufficient coolant
.
Check coolant fluid level;
clean pipes and jets
'
Incorrect fluid concentration
.
Check and use the correct
concentration
'
The blade stops in the cut
.
Cutting pressure too high:
check pressure and reset to
rated pressure.
Head downstroke speed too
fast: reduce.
Head downstroke speed too
slow: increase.
The blade slips on the flyw-
heels: incorrect or low blade
tension; readjust or increase.