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Figure 13: Process Heater Location and Disassembly
Procedures
Undo (6) 10-32 Button
Head Screws using 1/8
Allen Wrench
1" Wide x 1/8" Thick High
Temperature Gasket
(2) 4-40 screws
Hi Temperature
Snap Switch
1. Sketch the heater wiring configuration so you can properly re-wire the heater.
2. Remove the ceramic nuts and wires to the heater plate assembly being removed or
replaced.
6. Remove the six (6) 10-32 button head screws securing the process heater plate using
a 1/8” Allen wrench and slide out the assembly.
7. Remove the heater(s) from the mounting plate by removing the large brass nuts and
washers.
8. Re-install the heater(s) and heater plate assemblies in reverse order. Install new
heater gaskets and securely tighten all fasteners.
Caution! Heater loops should not touch each other.
“Hot spots” lead to premature heater failure!
2. Reinstall the wires based on the sketch you made earlier.
3. Reinstall the ceramic nuts to each heater terminal.
Dehumidifying Dryers Chapter 5: Maintenance 40 of 53