Allen-Bradley 1512B, User Manual

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68 Rockwell Automation Publication 1500-UM055I-EN-P - December 2021
Chapter 4 Maintenance
Auxiliary Contacts
Inspection and
Replacement
1. Complete the Power Lock-out Procedure (refer to Power Lock-out
Procedure on page 53 ).
2. Inspect the auxiliary contacts for wear, scorching or heat damage.
Replace any damaged contacts. The contacts have a mean time between
failure (MTBF) rating of 20 million operations if used within the
operating specifications.
3. To remove the contact, turn both of the D-head fasteners until the flat
sections are aligned with the edge of the contact (see Figure 64 ).
4. Remove the contact from the housing.
5. Disconnect the wires from the auxiliary contact.
6. Reverse the procedure to replace the auxiliary contact.
7. Ensure the contact is correctly positioned into the contact carrier (see
Figure 64 ).
Figure 64 - Auxiliary Contact Orientation
ATTENTION: To avoid shock hazard, lock out incoming power (refer
to Power Lock-out Procedure on page 53 ) before working on the
equipment. Verify with a hot stick or appropriate voltage measuring
device that all circuits are voltage free. Failure to do so may result in
severe burns, injury or death.
CATALOG NO.
700-CPM
SER. A
20
AMP
CATA LOG NO.
700-CPM
SER. A
20
AMP
CATALOG NO.
700-CPM
SER. A
20
AMP
CATALOG NO.
700-CPM
SER. A
20
AMP
CATA LOG NO.
700-CPM
SER. A
20
AMP
CATA LOG NO.
700-CPM
SER. A
20
AMP
D-head Fastener
Correct
Incorrect