Grain Systems Tanks PNEG-4090 - Manual (Page 129)

Chapter 8: Accessories
Installing a Roof Ring
Quantity and part numbers of roof ring kits vary with the location placement and with the size of each bin.
The following procedure will be similar for each kit.
What You Should Know
The roof ring and threaded stud may become dislocated from each other during high winds or when the
inside pressure of the bin is too great. If a threaded stud is dislocated, the entire roof ring will become dis-
jointed. To prevent this, drill holes through the roof ring and the threaded stud (after the rings have been
installed and expanded to the correct size) and insert a cotter pin or bolt through each hole. See
Figure 8-
4, page 130 .
1. Determine the quantity of roof ring clips (C) needed for the roof ring section (B) being installed.
NOTE: Each roof panel rib must have a roof ring clip installed.
2. Install a flange bolt (A) to the roof ring clip (C), and install a sealing washer (E) to the underside of the
roof ring clip (C).
3. Slide each assembled roof ring clip (C) onto a roof ring section (B), and position each roof ring clip
(C) over each roof panel rib.
4. Install a flange nut (D) to each roof ring clip (C).
NOTE: Do not tighten hardware until all roof ring sections have been installed.
Figure 8-3 Exhauster roof ring shown
A 5/16 x 1 in. flange bolt (S-10260) D 5/16 in. flange nut (S-3611)
B Exhauster roof ring section (CRP-
7229-XX)
5
E Sealing washer (S-3558)
C Roof ring clip (R-997)
5. Locate a threaded stud (F) and install stud nuts (G) evenly and to the center of the threaded stud (F).
Pneg-4090 90 Ft Diameter 40-Series Bin 129
5. (-XX) denotes the bin diameter.