8
Replacement of Cover Gasket for Padmount Switchgear Side-Hinge-2 Models
Field Service inStructionS
MN285009EN April 2019
Figure 37.
Typical condition of bolt hole area before
cleaning. On the left, the bolt hole shows
the bolt gasket adhered to the cover; on
the right, the bolt gasket lifted off with the
bolt when the bolt was removed.
6. Remove the cover
6.1 Place removable blue masking tape on one side of the
cover and the tank (Figure 38) so you can identify the
original orientation later, during re-installation of cover.
Figure 38.
6.2 Measure the tank cover’s front face width and depth;
then refer to Table 4 on page 8 to determine the
cover’s weight.
Table 4 . Reference: Cover Weight (lbs)
Face width
(inches)
Depth (inches)
Mild or Stainless Steel
Weight (lbs)
Min
Max
Min
Max
32
18
32
35
57
40
24
43
54
89
47
18
39
49
94
62
18
58
63
171
70
24
58
89
274
74
24
46
126
233
84
24
53
142
297
94
28
46
179
289
104
24
46
173
317
6.3 Prepare to remove the cover:
6.3.1 Make the necessary arrangements to handle
the cover’s weight (for example, enlist the help
of another person).
6.3.2 Decide where to place the cover after it is
removed and set up that area appropriately.
For example, set up workstands to hold the
cover, or identify a clean surface of adequate
size.
6.3.3 Ensure that you have a clear path to carry the
cover from the unit to the identified location.
6.4 Lift the cover off of the tank (Figure 39) and place it off
to the side on workstands or upside-down on a clean
surface.
WARNING
Heavy object . To avoid muscle strain or back injury,
use lifting aids and proper lifting technique when
lifting tank cover .
Figure 39.
7. Remove the cover gaskets
7.1 Starting at the corner of a tank flange, grasp the end
of one gasket and lift it up (Figure 40).
Figure 40.
