Rockwell Automation Allen-Bradley CENTERLINE 600, User Manual

Page: 93 / 110

Rockwell Automation Publication 1512A-UM101B-EN-P - December 2021 93
Appendix C ArcShield Chimney Installation Instructions
Cabinet Preparation
In preparation for mounting a chimney, the cabinet lifting means (slips of
lifting angles) must be removed. Reinstall the 5/8-11 bolts retaining the lifting
means in the holes from where they came (11 lb•ft [14.5 N•m]) (
Figure 80 ).
Failure to do this will remove the cabinets ability to properly control any arc
gases. Once the lifting angles or clips are removed, remove the 1/4-20 fasteners
(12 lb•ft [15N•m]) from the relief vent on the top of the MV enclosure.
The chimneys 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.
ATTENTION: Hardware used to retain the lifting provision hardware
must be reinstalled in the same holes ( Figure 80 ). Failure to replace
this hardware will make the arc resistance of the cabinet ineffective
and could subject personnel to the possibility of severe burns, injury,
or death.
IMPORTANT
Do not remove the four corner fasteners ( Figure 81 ).
Figure 80 - Relief Vent Fasteners (top view) Figure 81 - Relief Vent
Relief Vent
Relief Fasteners
Lifting Angle
Hardware Location
Corner Fasteners - DO NOT REMOVE