ブックタイトルcatalog2017vol3

概要

catalog2017vol3

How to use a Gauge ManifoldHOW TO USE A GAUGE MANIFOLD■How to use a gauge manifold①Measure therunning pressureof the unit.The colors in the illustrations means:(green color) indicate the vacuumprocess in the circuit(blue color) indicate the flow ofrefrigerant in the circuit■The name and function of the gauge manifold〈Function〉●to switch flow of refrigerant during vacuuming, filling= OPEN/CLOSE of valve●to judge the condition of the unit = by measuring the pressure(measuring the saturated temperature)〈Part Names〉High pressuregauge (liquid )Low pressurecompound gaugerefrigerationsaturationtemperaturescalelow pressureOPEN/CLOSE valve(gas)Lo:Low pressure valveto the low pressureside of the service port②Vacuum desiccationLo:Low pressure valveOPENCLOSEHi:High pressure valveto the high pressureside of the service portmake sure thatthe needle is pointingtowards thenegative pressureHi:High pressure valveOPENCLOSEair purge port(with valve cores)charging hose(connect withside that hasno valve cores)to low pressureside of service portCheckRefrigeratedair conditionerHeateritems Vapor Running Liquid Runningpressure current pressure currentHIGHHIGHLOWLOWTestresultHIGHHIGHLOWLOWHIGHHIGHLOWHIGHLOW LOW LOW LOWhigh pressureOPEN/CLOSE valve(liquid)sight glass(to be able to observecondition of refrigerant inside)to high pressureside of service portvacuum pump,refrigerant charging scale■Guide to determine failure element of unitFailure examplesObstruction of heat dissipation due tofilth or short circuitFailure of switch cover of the four-way valveFailure of room heat exchanger,heat dissipation/endothermicClog of refrigerant cycle, not enough gas※Pressure, current value of the unit, refrigerant differs by condition.Please check the manufacturer's user's manualto the low pressureside of the service port③Airtight test④ChargeAIR CONDITIONERto the high pressureside of the service portHi:High pressure valve CLOSELo:Low pressure valve CLOSEto the vacuum pump※vacuumpumpstoppedLeave for 5-10minutesvacuum pumpONMake sure that the gauge needle doesn’treturn to the“0”side(ie. make sure there are no leaks)※For high accuracy, we recommend TA142E to be usedon the vacuum port side⇒RUN AIR CONDITIONERrefrigerant cylinder valveOPENrefrigerant cylinderwith siphon tubeair purging portLo:Low pressure valveOPENOpen halfway and fillwith semi-liquid(HFC must be filled inliquid state)to the low pressureside of the service portHi:High pressure valveCLOSEthe air inside the hoserefrigerant charging scale⇒must be purgedliquidfluorocarbonTASCO JAPAN Co.Ltd.TASCO JAPAN Co.Ltd.ELECTRONIC CHARGING SCALEto the refrigerant charging scaleCalculate R22 liquid refrigerant by 20g/m (when 20℃)for the inside of 1/4 charging hose (from the manifold to the service port)TA101A ??????????※cylinder withoutsiphon tube must beused upside-down.60