AEC HE Mass Flow Series Drying hoppers - Manual (Page 10)

HE
• CHE • BCHE Mass Flow Series Drying Hoppers
Page 9
1-4 The CHE Control and Heater Drying Hopper
Package
The AEC/Whitlock CHE drying hopper package offers a process air heater removed from the
dryer and mounted at the hopper. The temperature controller is mounted at or on the drying
hopper. The design of the CHE package allows the dryer to deliver dehumidified air to multiple
drying hoppers to promote drying of different resins at different temperatures in different
hoppers.
Note: The CHE hopper package uses separate power drops to each hopper and avoids feeding
high voltage power through the dryer. An interlock prevents operation of heaters on the
hopper when the dryer is not running.
Figure 2
Typical CHE Drying Hopper Package
Heater
Cover and air trap/diffuser
Outlet transition
Sight
glass
Control
panel
Heater
Return air outlet
Process air connection
Disconnect
Temperature
controller