Step 1: Shut down system and fully relieve refrigerant pressure; use proper recovery procedures if required.
Step 2: Remove old relief valve and inspect ports for cleanliness and thread integrity.
Step 3: Apply compatible thread sealant and install new valve in correct orientation.
Step 4: Tighten to manufacturer torque specification without over-stressing fittings.
Step 5: Restore system pressure gradually and verify no leaks at connection points.
Step 6: Confirm relief setpoint operation and ensure safe discharge routing is unobstructed.