Rockwell Automation Allen-Bradley G Series, Руководство пользователя

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Rockwell Automation Publication 1502-UM060A-EN-P - October 2020 47
Chapter 4 Maintenance
3. With the contactor lying on its back, insert a 0.015 in. (0.38 mm) feeler
gauge between the latch roller and the armature plate as shown in
Figure 39 . Tighten the mounting blots (do not overtorque 1/4 in. nuts or
5/16 in. bolts).
Figure 39 - Gauging Mechanical Latch Location
4. With the contactor still clamped, depress the latch lever and release
allowing it to spring up. Verify there is smooth, unimpeded motion.
5. Remove the clamp and allow the armature to move out against the roller
such that the contactor is in the “latched” condition.
6. Using the manual trip lever, trip (drop out) the contactor. Apply 2…3 lb of
force to trip the contactor.
a. If too little force is required, the mechanism must be moved away from
the armature slightly (toward the front of the contactor).
b. If too great a force is required, the mechanism must be moved toward
the armature slightly (toward the back of the contactor).
If adjustment is required, the contactor must be clamped closed and
repeat the set-up procedure with thicker or thinner feeler gauges, as
required.
ATTENTION: The return springs exert a significant force on the
armature plate. To avoid injury, do not place fingers between the
armature plate and the stop bracket at any time.
IMPORTANT This setup is sensitive and critical. A few thousandths of an inch
makes a noticeable difference in the function of the latch. A
mechanism that trips too easily can result in nuisance tripping. A
mechanism that requires too much force can result in failure of
the coil to trip the latch.
Insert Feeler Gauge Here
0.010 in. (0.25 mm)