Begin the servicing and repair of an accumulator HVAC by first taking time to study all necessary warnings and cautions. Any problems with either the suction line from the evaporator outlet tube to the accumulator or the line from the accumulator to the compressor manifold mean the whole accumulator must be changed. Refrigerator plumbing should be free of sharp bends as they reduce the refrigerator's capacity; always ensure the bend is ten times the hose diameter and the line is a safe distance from the exhaust manifold. Because of the high pressure in the refrigeration system, all connections must be sealed and annual checks of flexible hoses are recommended. First, disconnect the negative
Battery Cable, take out the low pressure cycling clutch switch from the accumulator, remove the refrigerant from the system, disconnect the evaporator outlet tube's refrigerant piping fitting and seal or tape all uncovered fittings. Following this, take out the screw connecting the suction line block fitting to the compressor manifold, weaken the screw holding the support bracket and take away the accumulator. When you install the accumulator, put it through the support bracket band, line it up to the notch and tighten the clamp screw to 12 Nm (105 in. lbs.). Attach the suction line block fitting back to the compressor manifold, set the screw to 28 Nm (250 in. lbs.) and take off any tape or plugs from the refrigerant-line fittings. Set up the low pressure cycling clutch switch on the accumulator fitting, reconnect the negative battery terminal, purge the system of refrigerant and top up the lines with it. When the accumulator is changed, include 120 ml (4 fluid ounces) of refrigerant oil into the refrigerator.