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Husqvarna PG 680 Operator's Manual Page 28

Floor grinder/polisher.
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Diamonds may not be fitted correctly or
different height diamonds may be on the
grining heads. Diamond tools may be
GRINDER IS
mixed.
LEAVING AN
Head locks may be loose or missing.
IRREGULAR
SCRATCH
Resin tools may be mixed or have picked
PATTERN
up a contaminant.
Grinding heads may be worn-out or
damaged.
Grinding heads may be worn-out or
damaged.
Diamonds may not be fitted correctly or
different height diamonds may be on the
grinding heads.
Head locks may be loose or missing.
GRINDER IS
JUMPING
AROUND
Small motor not working (this can be
caused by fault with motor, fault with wiring
to motor, or fault with the small variable
speed drive)
28 – English
MAINTENANCE
Check that all diamonds are fitted correctly and are the same height.
Check that all segments are the same grit and bond. In the event of
uneven diamond segments space out uneven diamonds evenly and
run machine on an abrasive surface till all segments are equal
heights.
Check that all head locks are present and tight.
Ensure that all resins are the same grit and bond and free from
contaminants. To clean resins briefly run them on a lightly abrasive
surface.
Check grinding heads for broken parts or excess movement.
Check grinding heads for broken parts or excess movement.
Check to ensure all diamonds are fitted correctly and are the same
height.
Check to ensure all head locks are present and tight.
Check that the small variable speed drive is on. Check that there are
no faults on the small variable speed drive. Reset if required, at the
control panel near the handle bars. Check that small variable speed
drive is functioning properly (unplug both motors, set display on
keypad to output frequency, switch machine to RUN, see if numbers
on screen change from zero and begin counting up. If numbers stay
on zero, small variable speed drive is not receiving run command
from switch on control panel.) Machine needs to be checked by an
electrician or a Husqvarna service agent.

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