UNDERTUNED: When spring bolt is loosened,
parts slow down.
If an immediate slowdown of parts travel is noted, the unit
is undertuned. If more speed is needed, add one or more springs
(with proper spacers) or substitute a spring with a thicker
spring. Always recheck tuning after each change. If springs
are added, be certain the spring bolts are long enough to withstand
the torque necessary for tuning. ALL bolts must be tight when
tuning is complete.
OVERTUNED: When spring bolt is loosened,
parts speed up.
If a bolt is loosened slightly and parts speed up, the unit
is overtuned. Remove the thickest spring on the unit and replace
it with a thinner spring. When replacing the thicker spring,
use a 1/8" thinner spring. More than one spring may need
to be changed to a thinner one if the unit is excessively overtuned.
Most vibratory base units have a fairly wide range between
the lowest and highest points of tuning. Bowls should be final
tuned with the bowl carrying a normal load of parts and running
at the slowest possible speed, yet maintaining the specified
rate. The tuning should check slightly overturned when proper,
and a constant speed should be maintained as the parts level
decreases. Extremely heavy parts require a few more degrees
of overtuning than normal. ALL bolts must be tight when tuning
is complete.
SPECIAL TIPS
Stands or tables on which feeder equipment which is mounted
must be level, rigid, and of adequate strength to not set up
its own resistant vibration, thus lowering the efficiency of
the bowl.
Vibratory feeder equipment must not touch any track bracket
or other equipment.
Never attach other objects to the bowl or base drive.
Operate vibratory feeder equipment at the minimum speed required
to obtain good parts and meet specified rate. |