Amada HFA-250 Operator's Manual page 136

Symptom
26 Saw blade runs out.
27 Saw blade breaks.
28 Saw blade breaks or runs
out.
29 Saw blade vibrates or runs
out.
30 Saw blade teeth are clogged
and prematurely chipped or
saw blade runs out.
31 Saw blade runs out.
32 Saw blade runs out or
vibrates.
33
Saw blade teeth are
prematurely chipped.
34 Saw blade teeth are
prematurely chipped or saw
blade prematurely breaks.
35 Saw blade prematurely
breaks.
36 Saw blade teeth are
prematurely chipped or saw
blade runs out.
37 Saw blade teeth are
prematurely worn, or saw
blade teeth are clogged and
saw blade runs out.
38 Saw blade vibrates and
decreases in cutting rate.
Saw blade teeth are chipped
and saw blade is reduced in
life.
39 Saw blade prematurely
breaks.
40 Saw blade vibrates.
41 Saw blade runs out or saw
blade teeth are prematurely
chipped.
V-4
Cause
Saw blade tension is low.
Saw blade tension is too
high.
Saw blade is improperly set
in running position.
Sawhead knocks during
downward movement.
Wire brush is worn.
Saw blade inserts are
unevenly worn.
Guide roller or rollers are
worn.
V-belt is worn.
Backup roller or rollers are
worn or cracked.
Wheel or wheels are worn.
Speed reducer oil is
degraded or insufficient.
Cutting fluid is insufficient.
Cutting fluid is degraded or
its dilution factor is too large.
Cutting fluid pump filter is
clogged.
There is vibration-producing
machine nearby.
Power supply voltage is low
so that saw blade running
speed decreases with
increasing load.
Remedy
Retension saw blade, or
check hydraulic pressure
and cylinder.
Check hydraulic pressure.
Adjust saw blade so that it
runs in proper position.
Remove air from lift cylinder.
Adjust wire brush to
appropriate position or
change it.
Change them.
Change them.
Change it.
Change them.
Change them.
Change or add it.
Clean tank, and add
specified amount of cutting
fluid.
Change or add it.
Clean tank and filter.
Treat this machine not to
produce vibration or relocate
it.
Check it and connect
machine to dedicated power
source.