Step 1: Disconnect electrical power and recover refrigerant from the system using proper recovery equipment.
Step 2: Remove the old compressor by disconnecting suction, discharge, and electrical terminals carefully.
Step 3: Braze off the old compressor while purging to prevent internal oxidation.
Step 4: Install the new compressor in the correct orientation and braze suction and discharge lines securely.
Step 5: Replace the filter drier and evacuate the system to a deep vacuum to remove moisture and air.
Step 6: Recharge with the correct refrigerant and test for proper operation.