3.Adjusting Air Pattern
As soon as feed is flowing onto the deck, open the #1 and #2 fans completely to allow maximum air at the feed end of the deck. This will create a bubbling, boiling action and will cause the material to flow away from the feeder toward the light side of the deck. Figure 13C.
As the deck fills reduce the air on the first two fans to the preset adjustments listed in Table 1. Once the deck is completely covered, begin adjusting the fans to balance the air flow. Beginning with the fan at the discharge end of the machine, increase the air until you see a definite boiling, bubbling action. From this point reduce the air until the bubbling almost stops leaving the product bed in a fluid condition in the zone over the fan. Move to the next fan control closer to the feeder. Increase the air flow until you see a definite boiling action over the fan. Then reduce the air until the product is fluid but not boiling. Continue with this procedure moving toward the feeder one fan at the time. After final adjustment of the fan under the feeder repeat the process. Begin with the fan closest to the discharge end, work toward the feeder, one fan at a time. Generally by the time you have balanced the air twice you will have a good pattern. Figure 13D. As you become more familiar with the machine and the way the Product flows adjust the air in each zone as necessary.