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Page 17
TROUBLESHOOTING
Problem
Possible Cause
Remedy
7. 3390 is difficult to push or gets
stuck in areas.
a. Verify the seals are positioned
properly and are not to close to the
floor.
b. Raise height of seals.
8. The steel shot in the shot
hopper contains an excessive
amount of concrete dust.
a. Poor vacuum suction
b.
a. Verify that vacuum has good
suction.
b. If this does not resolve problem,
increase the travel speed of the
#3390 to reduce amount of
concrete being removed.
c. If “b” does not produce an
adequate profile make additional
passes over the floor surface.
9. #3390 or dust collector is
emitting concrete dust.
a. Verify there are no holes in the
duct hose leading from the #3390
to the dust collector.
b. Verify filters in the dust collector
are properly installed and are
clean. If necessary, replace filters
in dust collector.
10. Steel shot is being sucked
into dust bin.
a. Dust collector is producing
too much suction for the size of
shot being used.
a. Restrict air flow on dust
collector.