1. Correct blade installation

2. Blade installation

3. Checking blade angle / track on fan ring or fan stack

4. Checking blade angle / track on fan ring or fan stack

5. Checking blade angle / track on fan ring or fan stack

6. Checking blade angle using an Exact-A-Pitch® protractor

7. Tip seal honeycomb

8. Tip clearances > 5’ – 9’ (min. 1/4”) and (max. 1/2”)

9. Inlet bells

10. Air-Cooled Heat Exchangers
Induced Draft
Fans positioned above the exchanger bundle
High velocity
Reduces hot air recirculation
Plenums protect exchanger bundle from elements
Better air distribution across the bundle

11. Air-Cooled Heat Exchangers (cont.)
Fans & mechanicals positioned below bundle
H.P.requirements vary with temp.
Maintenance personnel protected from high exit-air temperatures
Well suited for high temperature service
Forced Draft