Step1: Disconnect power supply and allow unit to cool completely.
Step2: Remove access panel to locate existing thermostat switch.
Step3: Carefully disconnect wiring noting terminal positions.
Step4: Install new switch and secure connections.
Step5: Reassemble panel, restore power, and test temperature cutoff.
Step6: Verify thermostat calibration against manufacturer specifications.
Step7: Secure all screws and ensure no exposed wiring.
Step8: Use insulated tools and wear safety gloves during installation.