Rockwell Automation Publication 1512A-UM101B-EN-P - December 2021
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Appendix B ArcShield Plenum Installation Instructions
The plenums are designed to fit over the fastener heads at the four corners of
the relief vent. The corner fasteners are required to secure the relief vent
during installation.
Plenum Placement on Structure
After lifting the plenum in to place, directly over the relief vent (see
).
Reinstall all 1/4-20 fasteners (12 lb•ft [15N•m]), which were removed in
and attach the plenum to the top of the enclosure. Use
hand tools only.
Figure 67 - Typical Relief Vent Fasteners (top view)
Figure 68 - Relief Vent
Relief vent
Relief fasteners
Lifting Angle
Hardware Location
Corner Fasteners - DO NOT REMOVE