Samsung AR RXFP Series Installation Manual

Also see for AR RXFP Series: User manual

25EnglishInstallationPerforming the gas leak tests for repairIn case of repair of the refrigerant circuit, thefollowing procedure must be kept to considerflammability.1 Remove the refrigerant.2 Purge the refrigerant circuit with inert gas.3 Perform evacuation.4 Purge the circuit again with inert gas.5 Open the circuit.6 Perform repair work.7 Charge the system with refrigerant.8 Flush the system with nitrogen blowing forsafety.9 Repeat the previous steps several times until norefrigerant is within the system.CAUTION• Compressed air or oxygen shall not be used.• Flush the system with nitrogen blowing, fill therefrigerant until the working pressure is reached,ventilate to atmosphere, and then pull down to avacuum state.• For the final nitrogen blowing charge, thesystem shall be ventilated down to atmosphericpressure.• The procedure is absolutely vital in case ofbrazing on the pipings.• Make sure that the outlet of the vacuum pumpis not closed to any ignition sources and there isventilation available.• Do not apply any permanent inductive orcapacitance loads to the circuit without ensuringthat this will not exceed the permissible voltageand current permitted for the air condiitoner.DecommissioningThe following requirements must be fulfilled before andwhile taking the decommissioning procedure:• Before decommissioning, the worker shall befamiliar with the product details.• The entire refrigerant shall be recovered safely.• Before starting the process, oil and refrigerantsamples shall be taken just in case analysis isrequired for reuse.• Before starting the process, power supply must beavailable.1 Be familiar with the equipment details.2 Isolate the system electrically.3 Before starting the process, make sure that:• Any mechanical equipment is available for handlingrefrigerant cylinders.• All PPE (personal protective equipment) is availablefor servicing.• The recovery process shall be supervised by acompetent person.• The recovery equipment and cylinders comply withthe standards.4 Lower the refrigeration system, if possible.5 If vacuuming is not possible, make a manifold sothat refrigerant can be easily removed from theparts of the system.6 Make sure that the cylinders are placed on thescales before recovery.7 Run the recovery system in accordance with themanufacturer’s instructions.8 Do not overcharge the cylinders. (No more than80 %)9 Be sure to keep the cylinder within the maximumworking pressure, even temporarily.10 After charging, make sure that the cylinders andthe equipment are promptly removed from thesite and all isolation valves are closed.11 Recovered refrigerant shall not be charged intoother refrigeration system unless it is cleanedand checked.Maintenance Procedures

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