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Rockwell Automation 1512A MV Controllers - 800A One-High Cabinet User Manual

Page 61

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Maintenance 5-13

1512A-UM102B-EN-P – June 2013

Switch Interlock Lever

Isolation Switch

Operating Lever

Minimum Overlap

0.125 in. (3 mm)

Switch Interlock Lever

Isolation Switch

Operating Lever

Minimum Overlap

0.125 in. (3 mm)

Figure 5.11 – Isolation Switch Operating Lever Overlap

14) Open the contactor. Verify that the interlock lever and the rod move

freely and that the return springs move the assembly back to the

starting position.

To avoid shock hazards, lock out incoming power

(see page 5-3) 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) Complete the Power Lockout Procedure (see Page 5-3).
2) Open the medium voltage door.
3) Inspect the condition of the clevis pin and cotter pins shown in

Figure 5.11. Replace any worn parts.

4) If it is necessary to replace the isolation switch operating lever or

the interlock lever, apply Dow Corning 55 O-ring lubricant (Rock-

well Automation part no. RU-8216, or equivalent) to the pivot

points before installing the new components (See Figure 5.11)

A T T E N T I O N

A T T E N T I O N

Isolation Switch Mechanism

Inspection and Lubrication