Rockwell Automation 1512A MV Controllers, 400A One-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 66)

58 Rockwell Automation Publication 1512A-UM100F-EN-P - May 2013
Chapter 5 Maintenance
3. To adjust the distance from the blades to the bar, disconnect the threaded
connecting rod at the handle operating lever.
4. Turn the threaded connecting rod to lengthen or shorten it. This will
adjust the position of the isolation switch blades in the ON and OFF
position.
Auxiliary Contacts Inspection
and Replacement
1. Complete the Power Lockout Procedure (refer to Power Lock-out
Procedure on page 41 ).
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 59 ).
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 59 ).
Figure 59 - Auxiliary Contact Orientation
ATTENTION: To avoid shock hazard, lock out incoming power (refer to Power
Lock-out Procedure on page 41 ) 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