Issues - Oregon 730-120 Original Instruction Manual

Troubleshooting

7.4 Issues

Issues
The grinding head "falls" without
slowing down before it touches the
cutter.
The lengths of the right and left
cutters are not the same.
One of the troubleshooting indicator
LEDs on the control panel is lit up.
The chain is not fixed during
sharpening.
The wrong cutter is sharpened.
The top-plate angles are not the
same (e.g. 35° in one direction and
25° in the other) when the grinding
head turns in the 2 different
directions.
Wrong parts of the cutters are
sharpened.
The cutters are not correctly
sharpened.
The top-plate angle is too
aggressive.
The metal of a cutter turns blue
during grinding, which is an
indication of damaged or weakened
metal.
The depth of the gullets on the
left and right cutters are unevenly
sharpened.
40
Possible cause
The wire is worn and needs to
be adjusted.
The equal cutting teeth knob is
incorrectly set.
There is an issue with one of the
motors. An alarm is triggered
and must be corrected.
The chain vise is loose.
The air pressure is too low.
The chain was in the incorrect
position when the machine was
started.
The M6 nuts needs to be
adjusted.
The pitch adjustment wing is
not in the correct position for the
type of chain used.
A cutter was caught on the
chain pusher because the chain
pusher is worn out and the
material is uneven.
Incorrect settings are used.
The top-plate angle setting is
incorrect.
The grinding speed is set
too high and the metal is
overheated.
The grinding wheel is not
centered between the cutters.
Corrective procedure
See section 6.5, "Checking and
adjusting the wire"
See step 13 of section 5.2.5, "Making
the grinding settings"."
See section 7.5, "Troubleshooting
indicators"."
See section 6.4, "Fastening the chain
vise"."
Check and adjust the air pressure.
Find the cutter to be sharpened and
make sure that it is in the correct
position before the machine is
operated. See section 5.2.5, "Making
the grinding settings"."
See section 3, "Tighten the head-tilt
angle nut."."
See section 5.2.5, "Making the grinding
settings"."
Loosen the screw that holds the chain
pusher in its position. Discard the chain
pusher in accordance with local, state,
and national laws and regulations.
Attach a new chain pusher and fasten
the screw.
File the chain pusher with a rasp until
the material is even.
See section 5.2.5, "Making the grinding
settings"."
See section 5.2.5, "Making the grinding
settings"."
Replace the damaged cutter or discard
the chain. Lower the speed on the
grinding speed knob, see section 3.6.1,
"Grinding speed knob"."
See the instructions in step 14 of
section 5.2.5, "Make the grinding
settings."
730-120