Rockwell Automation Allen-Bradley G Series, Руководство пользователя

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36 Rockwell Automation Publication 1502-UM060A-EN-P - October 2020
Chapter 4 Maintenance
Routine Maintenance
The following must be performed annually or whenever a contactor is serviced:
Cleaning
1. Clean all metal chips or filings from around the electromagnet assembly
(coil core pole face and mating armature plate) as they can affect proper
operation of the contactor. Vacuum clean if necessary.
2. If the vacuum bottles are dirty, clean the white ceramic area with a clean
lint-free cloth.
Main Contact Inspection
Visually inspect the wear of the main contacts with the contactor energized.
When any part of the wear indicator line, located on the front side of the shaft,
moves up into the bearing, replace all three vacuum bottles (
Figure 20 ).
Figure 20 - Vacuum Bottle Wear Indicator
ATTENTION: Before performing any maintenance on the contactor,
refer to the User Manual of the starter configuration. Failure to do so
can result in injury to personnel or damage to the controller or
contactor.
ATTENTION: To avoid shock hazards, lockout incoming power and
disconnect the control plug from the contactor before working on the
unit. Verify with a hot stick or meter that all circuits are voltage free.
Failure to do so can result in severe burns, injury, or death.
IMPORTANT Do not use compressed air to clean or remove dirt from surfaces
or the enclosure.
Vacuum Bottle
Bearing
Wear indicator line on
operating shaft