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Large Dehumidifying Dryers Functional Description 18
Process Aftercooler
The optional aftercooler cools the moist air returning to the dryer from the drying hopper.
The aftercooler can cool the return air from 250ºF to about 150ºF. This maintains the dryer’s
efficiency and condenses the unwanted plasticizer from the air stream. The aftercooler
requires a cooling water connection (see Figure and page 25).
Figure 3: Process Aftercooler
High
Temperature
Gasket
Cooling Coil
Cooling Coil
Pipe Gasket
Mounting
Brackets
Stainless Steel
Cooler Housing
Cooling Coil
Cover Plate
High
Temperature
Gasket
Stainless Steel Cooler
Housing
Cooling Coil
Cooling Coil
Pipe Gasket
Cooling Coil
Cover Plate
Mounting Brackets
Aftercooler Design Specifications
Entering water temp.
ºF ºC
85ºF 29ºC
Process Air Dust Collector
The optional process air dust collector consists of a filter, dust can, pressure gauge, and
optional pressure switch (see Figure). The gauge will let you know whether it is time to clean
out your filters. The optional dirty filter alarm will be activated if the filter is dirty.