Installation Manual Installation
4 381333-415 B
INSTALLATION
The ASCO 7000 Series Automatic Transfer &
Bypass–Isolation Switch (ATB) consists of an upper
bypass–isolation switch, a lower transfer switch, a
monitoring and transfer controller, and door–mounted
controls. The ATB is factory wired and tested.
Installation requires removal of the shipping skid then
securing the enclosure to the supporting foundation.
Remove the Shipping Skid
Open the front lower door and remove the two front
lag screws securing the enclosure to the wood skid.
Next remove the rear lower panel and remove the two
rear lag screws securing the enclosure to the wood
skid.
Supporting Foundation and Mounting
The supporting foundation for the enclosure must be
level and straight. Allow at least 35 inches in front of
the enclosure for draw out of the Transfer Switch.
Refer to the enclosure outline drawing included with
the 7000 Series ATB for all mounting details including
door opening space.
If bottom cable entry is used, the foundation must be
prepared so that the conduit stubs are located
correctly. Refer to the appropriate enclosure outline
drawing for specified cable entrance area and
location. Provide cable bending space and clearance
to live metal parts. When a concrete floor is poured,
use interlocking conduit spacer caps or a wood or
metal template to maintain proper conduit alignment.
Mounting
Refer to the enclosure outline drawing furnished with
this switch and mount the 7000 Series ATB according
to the details and instructions shown on the drawing.
Remove Shipping Brackets / Angles
from the Transfer Switch
Open the lower front door(s). The Transfer Switch
carriage is secured to the frame for shipment.
Remove the three or four shipping brackets or L–
angles: (1 upper left, 1 upper right, and 2 lower).
To prevent serious damage, remove three or four
shipping brackets or L–angles from the Transfer
Switch carriage. Do not turn the Isolation Handle
until they are removed!
Figure 1. 600–3000 A remove shipping brackets.
Figure 2. 4000 A remove four shipping brackets.
remove 3 or 4 shipping brackets ( L
–
angles)
remove 2 lower
shipping brackets
remove 2 upper shipping brackets
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