Depressurize the compressor and extract refrigerant

The compressor is under pressure!

Serious injuries are possible.

Depressurize the compressor!

Wear safety goggles!

Close valves (suction gas side, discharge gas side and optional: Economiser, refrigerant injection, oil supply, valve for FI cooling).
Install a permanent magnet on the solenoid valve instead of the coil in order to keep the solenoid valve opened.