Step1: Disconnect main power supply at breaker to avoid electrical shock hazards.
Step2: Remove access panel and locate existing transformer wiring inside unit.
Step3: Label and disconnect old connections carefully noting terminal positions for safety.
Step4: Mount new transformer securely in original position using proper fasteners.
Step5: Reconnect wiring according to manufacturer diagram specifications ensuring correct polarity.
Step6: Replace panel and restore power, then test steamer operation carefully.