Rockwell Automation 1503 OEM Starter Frame Components Installation Manual - Manual (Page 51)

1503-IN050E-EN-P – June 2013
Maintenance 5-3
Lubricate Isolation Switch Blades
Lubricate Pivot Points
Figure 5.2 – Isolation Switch Lubrication Points
To avoid shock hazard, lock out incoming power 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.
1) Move the isolation switch handle to the OFF position and open the
controller door.
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 oper-
ating specifi cations.
3) To remove the contact, turn both of the D-head fasteners until the fl at
sections are aligned with the edge of the contact (See Figure 5.3).
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 5.3).
Auxiliary Contacts
Inspection and Replacement
A T T E N T I O N A T T E N T I O N