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IB140015EN
Instructional Booklet
Page
34
Effective: August 2014
ATC-900 Magnum Tranfer Switch O & M Manual
9.3 Cover Removal and Replacement
Many of the maintenance procedures outlined in Table 6 require
the removal and replacement of side and rear covers. For all
NEMA 1 and NEMA 3R enclosed transfer switches, see
Section 9.3.1 for cover removal and replacement instructions.
9.3.1 Cover Removal and Replacement
A 3/8
wrench or socket and ratchet is required to perform this
procedure.
Cover Removal
Step 1:
Locate the bolts used to secure the cover to the frame
and remove them with the 3/8
wrench. Remove the top
screws last while holding the cover in place (Figure 40).
Step 2:
Allow the top of the cover to slowly tilt away from the
enclosure frame (Figure 41).
Step 3:
Move your hands around to the sides and lift the cover
free (Figure 42).
Figure 40. Removing the Bolts.
Figure 41.Tilting the Cover Away from the Frame.
Figure 42. Lifting the Cover Free.
