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STT40 / STT70
Maintenance 5-11
7. Re-clamp process heater assembly onto the drying hopper.
8. Reattach wiring according to the sketch that was made previously.
9. Replace the air hose to the process heater.
10. Replace access cover on junction box of process heater assembly.
5.5.1. Replacing/Cleaning the Cooling Coils
• Hazardous electrical current present.
Disconnect and lock out power before you replace cooling coil!
Figure 5: Cooling Coil Location and Disassembly
1. In order to gain access to the cooling coil, the cover plate on the side of the
dryer must be removed.
2. Remove cooler from the cooler housing.
3. To clean the cooling coil, use compressed air or a steam cleaner to blow the
dust off or clean any oily residue on the coil.
4. Re-install the cooler in reverse order. Install new gaskets and securely
tighten all fasteners.
5. Secure the access cover on the side of the dryer.
Cooling Coil
Location