Panasonic CS-UW12GKE Specifikace stáhnout pdf (Strana 48)

5.Settherefrigerantcylinderontotheelectronicscale,thencorrectthehosethecylinderandtotheconnectionportforthe

electronicscale.(1)(2)

Precaution:

Besuretosetupthecylinderforliquidcharging.Ifyouuseacylinderequippedwithasiphontube,youcanchargetheliquid

withouthavingtoturnthecylinderaround

6.Removethecharginghoseofthemanifoldgaugefromthevacuumpumpadaptor,andconnectittotheconnectionportofthe

electronicscale.(2)(3)

7.Openthevalveoftherefrigerantcylinder,thenopenthechargingvalveslightlyandcloseit.Next,pressthecheckvalveofthe

manifoldgaugeandpurgetheair.(2)(4)(Watchtheliquidrefrigerantcloselyatthispoint.)

8.Afteradjustingtheelectronicscaletozero,openthechargingvalve,thenopenthevalveLoofthemanifoldgaugeandcharge

withtheliquidrefrigerant.(2)(5)(Besuretoreadtheoperatinginstructionsfortheelectronicscale.)

9.Ifyoucannotchargethestipulatedamount,operatetheunitinthecoolingmodewhilechargingalittleoftheliquidatatime

(about150g/timeasaguideline).Ifthechargingamountisinsufficientfromoneoperation,waitaboutoneminute,thenusethe

sameproceduretodotheliquidchargingagain.

Precaution:

Neverusethegassidetoallowalargeramountofliquidrefrigeranttobechargedwhileoperatingtheunit.

10.Closethechargingvalve,andafterchargingtheliquidrefrigerantinsidethecharginghose,fullyclosethevalveLoofthe

manifoldgauge,andstoptheoperationoftheunit.(2)(5)

11.Quicklyremovethecharginghosefromtheserviceport.(6)Ifyoustopmidwaythrough,therefrigerantthatisinthecyclewill

bedischarged.

12.Afterputtingonthecapsfortheserviceportandoperatingvalve,inspectaroundthecapsforagasleak.(6)(7)

Fig.13Re-chargingrefrigerant

10.4.6.Brazing

Asbrazingrequiressophisticatedtechniquesandexperiences,itmustbeperformedbyaqualifiedperson.

Inordertopreventtheoxidefilmfromoccurringinthepipeinteriorduringbrazing,itiseffectivetoproceedwithbrazingwhileletting

drynitrogengas(N2)flow.

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Panasonic CS-UW12GKE Specifikace Strana 48