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Normal G-Level Measurement
b.
With the machine (equipment) operating, back off the Setpoint adjusting screw one turn CCW and reset. If it will
not reset, back off the Setpoint adjusting screw two turns CCW, etc. Again turn the Setpoint adjusting screw slowly
clockwise until actuation occurs. Mark this position with a lead pencil or other convenient means. The difference
between the two actuating points in Steps a and b is the normal g-level of the operating machine, in scale divisions.
One scale division is 0.1 g; one full revolution is 1.0 g.
Final Setpoint Adjustment
c.
If the "normal" g-level is less than 1.0 g above the zero level, rotate the Setpoint adjusting screw CCW 0.5 g (five
graduations) from the point where actuation occurs in Step b above. If the "normal" g-level is greater than 1.0 g
refer to Figure 4-3 for the proper Final Setpoint setting with respect to the "normal g-level vibration point" ob-
tained in Step b. See example on Figure 4-3.
In the preceding adjustments, actuation can be heard as an audible "click". In very
noisy surroundings, it may be necessary to use an ohmmeter or wire the Vibraswitch
to the control circuit to tell when actuation occurs or observe visually that the arma-
ture is in the up (latched) position.
Figure 4-2 Setpoint Adjustment
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