Step1: Disconnect main power and verify zero voltage before servicing to prevent electrical shock.
Step2: Open control panel and locate the existing contactor assembly in the electrical section.
Step3: Label and disconnect coil and load wiring carefully to ensure correct reconnection.
Step4: Remove mounting screws and replace with the new contactor in the same position.
Step5: Reconnect all terminals securely and inspect for proper tightness.
Step6: Restore power and test operation for correct switching and heating control.