Emerson 7ADTB Betreibershandbuch PDF herunterladen (Seite 13)

BYPASSING & ISOLATING

(continued)

3 --- 3

left support leg

right support leg

locking pin

with clevis pin

locking pin

with clevis pin

adjust length to touch floor

Drawout procedure

grasp tw o handles

1. Bypass and Isolate the ATS, then open both lower doors.

2. Pull out the rail support carriage all the way.

3. Remove left & right clevis and locking pins, drop two support legs, reinstall locking

and clevis pins (to lock in place), and adjust both leg lengths to extend to the floor.

4. Stand directly in front of transfer switch. Grasp both handles, and pull straight out

(detentsontherailsrequirehighinitialforcetoovercomeresistance).

rail support

carriage

Figure 3–7b. 4000 amp transfer switch isolated and pulled out for inspection.

To avo id personal injury and equipment

damage on 4000 A switches, two support legs

must be extended as shown in Figure 3–8.

Substantial initial force is required to pull out

the transfer switch (there are detents on rails).

The 4000 A transfer switch weighs 600 lb.

Use lifting yoke 835745–001 or other device

capable of lifting this weight to avoid personal

injury or equipment da mage.

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Emerson 7ADTB Betreibershandbuch Seite 13