Grain Systems PNEG-707GSI - Manual (Page 54)

5. Plenum Roof
54 PNEG-707 12', 18', 24' and 30' GSI Commercial Tower Dryer
Figure 5N Figure 5O
Rolled Plenum Channels
Install 1 ring of rolled plenum channels to reinforce the ring of inside top wall sheets as follows.
1. Bolt one (1) plenum channel splice to each rolled plenum channel with 5/16" x 1" whiz bolt and nut
before installing to dryer.
Figure 5P Plenum Channel Splice Figure 5Q Plenum Channel Splices - as shipped.
Throughout Dryer
Install rings of rolled plenum channels to wall sheets so closely that fingers will not fit between them.
2. Snug bolt rolled plenum channels to inside top wall sheets with 5/16" x 3/4" whiz lock bolts and nuts.
NOTE: Bolt in fifth bolt hole from bottom of vertical channel.
If necessary to fit last rolled plenum channel into ring, remove bolts from wall sheets
on both sides, pull one (1) bolt out of vertical channel (above or below), bend and push it
down into place. (Do not cut it.)