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Pellerin Milnor Corporation
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Vibration Safety Switch Adjustments
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What the Vibration Safety Switch Does
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The vibration safety switch in Figure 65: Vibration Switch, page 143 is an important safety fea-
ture. If properly adjusted, the switch will momentarily actuate as a result of repeated machine
movement caused by an out-of-balance condition. Table 45 below illustrates the effect of the vi-
bration safety switch actuation.
Table 45. Effect of Tripping Vibration Safety Switch
Machine Model Function of Vibration Safety Switch
30015, 30020, and 30022 Disables high speed extract
All microprocessor-controlled washer-extrac-
tors not listed above, and all dye machines
De-energizes three-wire relay, effectively ter-
minating machine operation
Adjustments
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When the machine leaves Milnor
®
, the actuator arm is tie-wrapped to prevent damage (except on
30015, 30020, and 30022 models). This tie wrap must be removed after the machine is set in-
to position but before the machine is operated.
Adjustment of this switch from the factory setting is not recommended; however, it should be
checked for proper functioning and adjusted if its proper setting is lost.
As shown in Figure 65: Vibration Switch, page 143 , the unit consists of a sensitive micro-switch
with an extended actuating arm supporting an eccentric weight. The weight may be adjusted by
moving it up and down on the arm and by rotating it on the arm. In addition, the micro-switch it-
self may be tilted from side to side.
The sensitivity of the switch increases as the eccentric weight is raised on the actuating arm
and decreases as the weight is lowered.
The unit should be adjusted so that the actuating arm will always reset by itself, this being accom-
plished by rotating either the switch or the weight to give just enough bias to cause the switch to
reset. Check the adjustment by moving the arm to the left then slowly releasing it. Make sure the
micro-switch clicks when the arm is slowly released, thus indicating that it has reset. In the re-
leased position, the arm should rest lightly but definitely against the stop on the micro-switch
case that prevents any further arm movement to the left.
Control & Sensing
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