AEC AP Series Large Dehumidifying Dryer - Manual (Page 34)

Large Dehumidifying Dryers Mechanical Installation 33
3-8 Using the Drying Hopper Air Trap
Our exclusive air trap assembly in the top of the drying hopper prevents ambient air from
contaminating the material being dried. To ensure that air does not enter the drying system,
do the following (See Figure):
; Keep the material level above the bottom edge of the air trap for maximum
efficiency.
; Use a hopper loader or vacuum conveying system to maintain the proper material
level.
Figure 10: Drying Hopper Air Trap
Suggested material level
for the optimum
efficiency.
Air Trap
Flapper Valve
of the loader
Return air from the
drying hopper.
Delivery low dew point,
heated air to the drying
hopper.
Insulation
Recommended process
temperature control
thermocouple location.