Grain Systems PNEG-707GSI - Manual (Page 52)

5. Plenum Roof
52 PNEG-707 12', 18', 24' and 30' GSI Commercial Tower Dryer
See Orientation Section on Page 19 for dryer dimensions, components, wall sheet guidelines, etc.
See Appendix A on Page 435 for tools and equipment, Appendix B on Page 437 for hardware, etc.
Steps to Construct Plenum Roof
Jig Clips
Install jig clips as follows.
NOTE: See Figure 5D-5I on Page 49 , jig clip and vertical channel placement.
1. Mark center of concrete foundation. This will be dryer center.
Be sure foundation is level.
NOTE: Foundation must be level, with no low or high spots. Jig clips anchor columns of vertical
channels to the foundation while the dryer is being constructed. Low or high spots can
cause misalignment between vertical channels and wall sheets causing the wall sheets
to wrinkle.
2. Hold a tape measure on dryer center mark with an alignment punch and stretch tape to a radius
of 7' 11-3/16".
Check orientation of dryer to existing equipment, structures, fuel and electric intake. Plan for
placement of dryer features per
Orientation Section on Page 19 .
Check for lateral clearance.
Check to be sure top of completed dryer will have height clearance.
Use marker, alignment punch, or nail to draw circle on foundation. This is circle B in
Figure 5D on Page 49 , which is the circle drawn for jig clip installation.
3. Mark the first jig clip position on circle B. Be sure that when dryer is complete, grain unload
conveyor will center between two (2) dryer legs.
When dryer is complete, a dryer leg will buttress under each column of vertical channels.
4. Mark the remaining jig clip positions at 4' 1-1/4" intervals around circle drawn for jig clip installation.
If last interval is less than, or greater than 4' 1-1/4", adjust until less than 1/4" split error equally
between all intervals. If jig clip positions are not accurate, the dryer may not be round, wall sheets
may be misaligned, and the divider hopper between heat section and cool section may not fit.
5. Center outside edge of jig clip flush with interval mark. Drill foundation through jig clip and bolt with
1/2" x 3-3/4" heavy duty expanding anchor bolt and washer. (See Figure 5J and Figure 5K.)
Figure 5J 1/2" x 5-1/2" Expanding anchor
bolt and washer.
Figure 5K Center outside edge of jig clip flush with
interval mark (under X).
Important Safety Precautions:
Dryer has sharp edges. These sharp edges may cause serious injury. Use
appropriate personal protective equipment. Use proper lifting techniques.
X