Sterlco MDB Series Dryers - Manual (Page 25)

3-6 Drying Hopper
Removing the Rust Inhibitor
Rust preventative has been applied to internal unfinished surfaces. Remove rust inhibitor before
using the drying hopper.
Using a non-water based degreasing agent, clean all inside surfaces of the drying hopper. Allow
components to dry thoroughly.
Inspect the inside of the drying hopper for loose connections, foreign objects, or a blocked
diffuser.
Air Trap Considerations
The air trap assembly in the top of the drying hopper prevents ambient air from contaminating the
material being dried.
 Keep the material level at the mid point of the air trap for maximum efficiency.
 Use a hopper loader or vacuum conveying system to maintain the proper material level.
3-7 Positioning Your Dryer
For the dryer work function properly it is critical to place the process air thermocouples on the
drying hopper inlet and outlet. These devices accurately monitor the air temperature entering and
leaving the drying hopper, the value of which is used by the control to maintain the process
temperature set point. Compression fittings are required to hold the thermocouple in place so that
the tip is approximately in the center of the tube as shown.
Air Inlet
Air Return
This photo demonstrates the proper
location of the thermocouple inside
the air inlet and return tubes.
Adapter (if required)
1/8” NPT to BSPT
1/8”
Compression fitting
Thermocouple
The locations of
the inlet and
return will vary
on different
drying hoppers.
Installation 25