Panasonic CS-MA90KE Service Manual

Panasonic CS-MA90KE Service Manual Manual pdf 35 page image

– 34 –CS-MA90KE4 Balance refrigerant of the 2-way, 3-way valve(Lack of refrigerant in the refrigeration cycle)(Indoor unit) (Liquid side)(Gas side)OPENCLOSELo HiRefrigerantReclaimingEquipment3-way valveOpen2-way valveOpen(Outdoor unit)Procedure:(1) Confirm that both the 2-way and 3-way valves areset to the open position.(2) Connect the charge set to the 3-way valve’sservice port.l Leave the valve on the charge set closed.l Connect the charge hose with the push-pin to theservice port.(3) Connect the charge set’s centre hose to refriger-ant reclaiming equipment.l Purge the air from charge hose.(4) Open the valve (Low side) on the charge setand discharge the refrigerant until the gaugeindicates 0.05 MPa (0.5 kg/cm 2 G) to 0.1 MPa(1 kg/cm 2G).l If there is no air in the refrigeration cycle (the pressurewhen the air conditioner is not running is higher than0.1 MPa (1 kg/cm 2 G), discharge the refrigerant untilthe gauge indicates 0.05 MPa (0.5 kg/cm 2 G) to 0.1MPa (1 kg/cm 2 G). If this is the case, it will not benecessary to apply a evacuation.l Discharge the refrigerant gradually; if it is dischargedtoo suddenly, the refrigeration oil will also be dis-charged.(5) Turn on refrigerant reclaiming equipment .