Emerson 7000 SERIES ATB manual Manual Operation Test, Rotating Weight Handle

INSTALLATION (continued)

2 – Manual Operation Test

This procedure will check the manual operation of the Bypass Switch, Isolation Switch, and Transfer Switch. Observe the lights on the Status Indicator panel. The Bypass Switch CLOSED ON NORMAL and the TEST lights should be on. See Figure 1–11.

1.Isolate the Automatic Transfer Switch:

Install the Isolation Handle and turn it counterclock- wise until it stops (approximately 7 or 8 turns). The Automatic Transfer Switch is now in the Discon- nected position (See Figure 1–9.).

The DISCONNECTED light should come on.

Turn draw-out crank counterclockwise approximately 7 or 8 turns until it stops.

Figure 1–9. Open (disconnect) isolation contacts.

2.A detachable manual operator handle is provided on the Transfer Switch for maintenance purposes only.

!

Do not manually operate the Transfer Switch unless the Isolation Handle is in the OPEN position and the DISCONNECTED light is on.

rotating

weight

handle

Figure 1–10. Transfer Switch manual operator handle.

1--6

Figure 1–11. Status Indicator Panel.

Insert the manual handle into the hole in the rotating weight as shown in Figure 1–10. Move the installed handle up and down to manually operate the Transfer Switch. The Switch should operate smoothly without binding. Return the Transfer Switch to the NORMAL position. Remove manual operator handle and store it on the Transfer Switch in

the place provided. Now go to page 1–7.

Turn draw-out crank clockwise approximately 7 or 8 turns until TEST light comes on.

Figure 1–12. Move ATS to TEST position.