
6
Operation & Maintenance (cont.)
IMPORTANT
Both ends of the motor must be adjusted
to the same setting.
FIGURE 4
Adjustable weights set at 50%.
Fixed weight shaded.
Adjustment of Force Output
To decrease the centrifugal force output, a quick
and easy adjustment can be made to the eccentric
weight position at each of the motors.
1. Disconnect all power to the unit.
2. Remove both end covers, exposing the eccentric
weights. Each end of the shaft has a percentage
calibration from zero to 100%. See photo illustration.
3. Loosen only the outer eccentric weight at each
end of the motor (use a metric wrench). Rotate
the dot (punch mark or similar indicator) to
the desired force output percentage position.
Do the same at both ends of the motor.
4.
Be certain weights have been retightened securely
and replace motor and end covers back to their
proper position.
Motor vibrations are easily adjusted by setting
the indicator on the eccentric weight to the proper
(% of maximum force) output.
For more information on reading tray displacement,
see Eriez' YouTube channel and look for "How to
Read Eriez Vibratory Displacement Stickers."
IMPORTANT
• Never loosen the inside eccentric weights
closest to the motor.
• Never operate the motor vibrator while the
weights at opposite ends are set at different
settings.
• Be certain eccentric weights are retightened
securely.
Adjustment by Adding/Removing Springs
Deflection may also be adjusted by adding or
removing leaf springs.
Adding springs will decrease deflection at the
same speed, and removing springs will increase
deflection at the same shaft speed. Refer to
Repairs-Spring Replacement in this manual
for instruction on placing or adjusting springs.
NOTE: Material build-up on pan may increase pan
deflection and cause tuning spring failure or cracks
in tray and base.
If material build-up on the tray is anticipated,
consult Eriez to discuss an over deflection monitor.
Spring Replacement
Before disassembling springs, note how the clamps,
springs and spacers are arranged. They must be
reassembled in the same order. There must always
be a plastic spacer on both sides of the leaf springs.
Torque spring bolts to 78 ft. lbs. (106 Nm)
CAUTION
Do not operate unit with any associated equipment
in direct contact with any part of the vibratory
unit. Cracks can occur in the tray and base.
FIGURE 5
Typical
spring
arrangement