Re-gassing any refrigeration unit should really be done by a qualified engineer. Before you re-gas, you must find and repair the cause of the initial leak. If over gassed, it could damage the equipment. Also, the refrigerant can be dangerous, and if not charged the correct way, can cause injury... You will also need a charging valve, a "service manifold" and a cylinder of the CORRECT refrigerant, to do the job.
Dave E, June 2009
