Rockwell Automation 1503 OEM Starter Frame Components Installation Manual User Manual

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5-2

Maintenance

1503-IN050E-EN-P – June 2013

Clevis Pins and

Cotter Pins

Isolation Switch

Operating Lever

Interlock Lever

Lubrication Points

(Only at replacement)

Threaded

Connecting Rod

Contactor

Interlock Rod

Figure 5.1 – Isolation Switch Handle Mechanism Lubrication Points

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

interlock lever, apply Dow Corning 55 O-ring lubricant (or equivalent)

to the pivot points before installing the new components (see Figure

5.1).

5) Inspect the mounting hardware on the isolation switch operating lever

and contactor interlock rod (see Figure 5.1). Tighten any loose hardware.

6) Inspect the isolation switch blades and the incoming line stabs (see

Figure 3.9). The mating surfaces must be clean and well lubricated.

7) Remove any dirt and dried grease.

Do not scrape or fi le the parts. This may remove the plat-

ing and expose the underlying copper to corrosion.

8) Lubricate the isolation switch blades and the isolation switch blade pivot

points with Nyogel 759G - part number T9327-105 (see Figure 5.2).

Lubricate the isolation switch blades a minimum of once

per year to avoid excessive wear to the components and

to prevent the isolation switch blades from overheating.

Isolation Switch Mechanism

Inspection and Lubrication

(cont.)

I M P O R T A N T