R407F yog lub tub yees tsim los ntawm Honeywell.Nws yog ib qho kev sib xyaw ntawm R32, R125 thiab R134a, thiab muaj feem xyuam rau R407C, tab sis muaj lub siab uas zoo sib xws R22, R404A thiab R507.Txawm hais tias R407F yog Ameslikas los ua ib qho kev hloov R22 nws yog tam sim no kuj siv nyob rau hauv lub tsev muag khoom daim ntawv thov qhov twg nws GWP ntawm 1800 ua rau nws ib tug qis GWP lwm txoj rau R22 uas muaj ib tug GWP ntawm 3900. Raws li tau piav qhia nyob rau hauv daim duab, R407F yog raws li tib yam. molecules raws li thiab muaj ib tug zoo xws li cov muaj pes tsawg leeg rau R407C, thiab tag nrho cov li qub thiab lwm yam khoom tswj uas tau pom zoo rau R22 / R407C kuj ua hauj lwm zoo nrog R407F.
Compressor xaiv:
Cov lus qhia no rau kev rov qab ua dua lossis txhim kho compressors hauv cov cuab yeej tshiab nrog peb qhov tam sim no tau hloov kho nrog cov lus pom zoo rau kev hloov R22 nrog cov khoom muaj peev xwm muaj nyob hauv khw xws li R407F.
Valve xaiv:
Thaum xaiv ib lub thermostatic expansion valve xaiv lub valve uas tuaj yeem siv tau rau ob qho tib si R22 thiab R407C, txij li lub vapor siab nkhaus sib phim cov li qub zoo dua li qub tsuas yog siv tau nrog R407C.Rau qhov kev teeb tsa superheat kom raug, TXVs yuav tsum tau rov kho dua los ntawm "qhib" los ntawm 0.7K (ntawm -10C).Lub peev xwm ntawm cov thermostatic expansion li qub nrog R-407F yuav yog kwv yees li 10% loj dua li lub peev xwm rau R-22.
Txoj kev hloov pauv:
Ua ntej pib qhov kev hloov pauv, yam tsawg kawg ntawm cov khoom hauv qab no yuav tsum tau yooj yim: ✮ tsom iav tsom iav
✮ Cov hnab looj tes
✮ Cov khoom siv tub yees
✮ Electronic thermometer
✮ Lub tshuab nqus tsev twj muaj peev xwm rub tau 0.3 mbar
✮ Thermocouple micron ntsuas
✮ Leak detector
✮ Cov tub yees rov qab nrog cov tub yees lub tog raj kheej
✮ Lub thawv kom raug tshem tawm cov roj nplua nyeem
✮ Cov cuab yeej tswj ua kua tshiab
✮ Hloov kua kab lim-drier(s)
✮ Tshiab POE lubricant, thaum xav tau
✮ R407F siab kub daim ntawv qhia
✮ R407F tub yees
1. Ua ntej pib hloov dua siab tshiab, lub kaw lus yuav tsum tau ua kom huv si kuaj nrog R22 refrigerant tseem nyob hauv qhov system.Txhua qhov xau yuav tsum tau kho ua ntej R407F cov tub yees ntxiv.
2. Nws raug nquahu tias cov txheej txheem kev ua haujlwm (tshwj xeeb yog qhov nqus thiab tso tawm qhov siab (siab piv) thiab nqus superheat ntawm lub compressor inlet) raug kaw nrog R22 tseem nyob hauv qhov system.Qhov no yuav muab cov ntaub ntawv hauv paus rau kev sib piv thaum lub kaw lus muab rov qab rau hauv kev ua haujlwm nrog R407F.
3. Tshem tawm hluav taws xob fais fab rau qhov system.
4. Tshem tawm R22 thiab Lub.Roj los ntawm compressor.Ntsuas thiab sau cov nyiaj tshem tawm.
5. Hloov cov kua kab lim-drier nrog ib qho uas sib xws nrog R407F.
6. Hloov lub expansion valve los yog lub hwj chim khoom mus rau ib tug qauv pom zoo rau R407C (tsuas yog yuav tsum tau thaum retrofitting ntawm R22 rau R407F).
7. Tshem tawm qhov system mus rau 0.3 mbar.Kev kuaj lub tshuab nqus tsev yog pom zoo kom paub tseeb tias lub kaw lus qhuav thiab tsis muaj paug.
8. Recharge lub kaw lus nrog R407F thiab POE roj.
9. Them lub kaw lus nrog R407F.Them rau 90% ntawm cov tub yees tshem tawm hauv cov khoom 4. R407F yuav tsum tawm ntawm lub tog raj kheej them rau hauv cov kua theem.Nws tau pom zoo tias lub iav pom kev sib txuas ntawm lub charger hose thiab compressor suction service valve.Qhov no yuav tso cai rau kev hloov pauv ntawm lub tog raj kheej valve kom paub tseeb tias cov tub yees nkag mus rau hauv compressor hauv lub xeev vapor.
10. Ua haujlwm ntawm qhov system.Sau cov ntaub ntawv thiab muab piv rau cov ntaub ntawv coj los siv hauv cov khoom 2. Tshawb xyuas thiab kho qhov teeb tsa TEV superheat yog tias tsim nyog.Ua kev kho rau lwm yam kev tswj raws li xav tau.Ntxiv R407F yuav tsum tau muab ntxiv kom tau txais kev ua haujlwm zoo tshaj plaws.
11. Sau cov khoom kom raug.Tag lub compressor nrog cov tub yees siv (R407F) thiab cov roj nplua nyeem siv.
Post lub sij hawm: Apr-09-2022