Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 199)

Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013 189
ArcShield Plenum Installation Instructions Appendix E
Cabinet Preparation
In preparation for mounting Plenum, remove 1/4-20 fasteners from the Relief
vent on the top of the MV enclosure. Leave the (4) corner fasteners in place (see
Figure 89 ).
The Plenums are designed to fit over the fastener heads at the (4) corners of the
Relief vent. The corner fasteners are required to secure the Relief vent during
installation.
Plenum Placement on Structure
Once the Plenum has been lifted in place directly over the relief vent (shown in
Figure 90 ), all 1/4-20 fasteners, removed in Cabinet Preparation above, are
replaced to attach the Plenum to the top of the enclosure. Use hand tools only.
Figure 88 - Typical Relief Vent Fasteners (top view) Figure 89 - Relief Vent
Relief Vent
Remove Fasteners
Do not remove
(4) corner
fasteners