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SECTION 1 INSTALLATION
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The ASCO 7000 Series Automatic Delayed–Transition
Transfer & Bypass–Iolation Switch (ADTB) consists of
an upper bypass–isolatio n switch, a t ransfer switch, a
monitoring and transfer control panel, and door–
mounted controls. The ADTB i s factory wired and
tested. Installation requires removal of the shippingskid
then securing the enclosure to the supporting founda-
tion.
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 ADTB 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 a ppropriate enclosure outline drawing for
specified cableentrancearea andlocation. 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 ADTB according
to the details and instructions shown on the drawing.
Remove three Shipping Angles
from the Transfer Switch
Open the lower front door. T he Transfer Switchcarri age
is secured to the frame for shipment. Remove the three
shipping angle (1 upper left, 1 upper right, 1 lower right).
To prevent serious damage, remo ve three
shipping angles from the Transfer Switch
carriage. Do not turn the Isolation Handle
until they are remo ved!
Figure 1-1. Typical enclosure,
remove 3 shipping
L–angles from transfer switch
Figure 1-2. Remove three s hipping L–angles.