ADS Environmental Services Model 4000 530017 A0 - Manual (Page 32)

Monitor and Sensor Installation 3-9
10. Place the ring on a flat surface with the spreader mechanism
screw facing up.
11. Orient the ring with the downstream edge (edge with small
holes) facing you.
12. Lay the spreader mechanism across the inside of the ring with
the downstream end of the mechanism (end with the large
welded nut) facing you, the four spreader bars facing toward
the inside of the ring, and the shoulder bolts pointed outside
the ring.
13. Place a washer and then the downstream, left spreader bar over
the spreader mechanism screw.
Orienting and attaching the spreader mechanism
14. Place the upstream, left spreader bar onto the same screw.
15. Lightly turn the hex nut onto the screw, ensuring that it passes
through the holes in the end of the spreader bar.
Note: Steps 16 through 18 apply only to overlapping
rings. For a non-overlapping ring, proceed to step 19.