R407F firiji ne wanda Honeywell ya haɓaka.Haɗin R32, R125 da R134a ne, kuma yana da alaƙa da R407C, amma yana da matsin lamba wanda ya fi dacewa da R22, R404A da R507.Kodayake R407F an yi niyya ne don maye gurbin R22 amma yanzu ana amfani da shi a manyan kantunan aikace-aikacen inda GWP na 1800 ya sa ya zama mafi ƙarancin GWP madadin R22 wanda ke da GWP na 3900. Kamar yadda aka kwatanta akan adadi, R407F yana dogara ne akan wannan adadi. kwayoyin kamar kuma yana da irin wannan abun da ke ciki zuwa R407C, da duk bawuloli da sauran kula da kayayyakin da aka amince da R22/R407C kuma aiki da kyau tare da R407F.
Zaɓin kwampreso:
Wannan jagorar don sake gyarawa ko shigar da compressors a cikin sabbin kayan aiki tare da kewayon mu na yanzu an sabunta shi tare da shawarwarin fasaha don maye gurbin R22 tare da yuwuwar gauraya da ake samu a kasuwa kamar R407F.
Zaɓin Valve:
Lokacin zabar bawul ɗin faɗaɗa thermostatic ya zaɓi bawul ɗin da za'a iya amfani dashi duka R22 da R407C, tunda tururin matsa lamba ya dace da waɗannan bawuloli fiye da bawul ɗin da ake amfani da su kawai tare da R407C.Don daidaitaccen saitin zafi, dole ne a sake gyara TXVs ta hanyar "buɗe" ta 0.7K (a -10C).Ƙarfin bawul ɗin faɗaɗa thermostatic tare da R-407F zai zama kusan 10% girma fiye da ƙarfin R-22.
Hanyar canjawa:
Kafin fara canjin, aƙalla abubuwa masu zuwa yakamata su kasance cikin samuwa: ✮ Gilashin aminci
✮ safar hannu
✮ Ma'aunin sabis na firiji
✮ Ma'aunin zafi da sanyio
✮ Vacuum famfo mai iya ja 0.3 mbar
✮ Thermocouple micron ma'auni
✮ Na'urar gano leka
✮ Na'urar dawo da firji gami da silinda mai sanyi
✮ Akwatin da ta dace don cire mai
✮ Sabuwar na'urar sarrafa ruwa
✮ Maye gurbin ruwa mai tace-drier(s)
✮ Sabon man shafawa na POE, lokacin da ake bukata
✮ R407F yanayin zafin jiki
✮ R407F mai sanyi
1. Kafin fara juyawa, tsarin ya kamata a gwada shi sosai tare da refrigerant R22 har yanzu a cikin tsarin.Dole ne a gyara duk leɓuka kafin a ƙara firijin R407F.
2. Yana da kyau cewa tsarin aiki yanayin (musamman tsotsa da fitarwa cikakken matsi (matsi rabo) da tsotsa superheat a kwampreso mashigai) da R22 har yanzu a cikin tsarin.Wannan zai samar da bayanan tushe don kwatanta lokacin da aka mayar da tsarin aiki tare da R407F.
3. Cire haɗin wutar lantarki zuwa tsarin.
4. Cire R22 da Lub daidai.Mai daga kwampreso.Auna kuma lura da adadin da aka cire.
5. Sauya mai tace-drier line ruwa da wanda ya dace da R407F.
6. Sauya bawul ɗin faɗaɗawa ko ɓangaren wutar lantarki zuwa ƙirar da aka amince da ita don R407C (kawai ana buƙata lokacin da ake sake sabuntawa daga R22 zuwa R407F).
7. Fitar da tsarin zuwa 0.3 mbar.Ana ba da shawarar gwajin ɓarna don tabbatar da cewa tsarin ya bushe kuma babu yawo.
8. Yi cajin tsarin tare da R407F da POE mai.
9. Yi cajin tsarin tare da R407F.Cajin zuwa kashi 90% na firiji da aka cire a abu na 4. R407F dole ne ya bar silinda mai caji a cikin lokacin ruwa.Ana ba da shawarar cewa a haɗa gilashin gani tsakanin bututun caji da bawul ɗin sabis na kwampreso.Wannan zai ba da izinin daidaita bawul ɗin Silinda don tabbatar da firiji ya shiga cikin kwampreso a cikin yanayin tururi.
10. Aiki da tsarin.Yi rikodin bayanan kuma kwatanta da bayanan da aka ɗauka a abu na 2. Duba kuma daidaita saitin zafi mafi girma na TEV idan ya cancanta.Yi gyare-gyare zuwa wasu sarrafawa kamar yadda ake buƙata.Ana iya ƙara ƙarin R407F don samun ingantaccen aikin tsarin.
11. Yi lakabi da abubuwan da aka gyara daidai.Yi alama da kwampreso tare da firji da aka yi amfani da shi (R407F) da mai da ake amfani da shi.
Lokacin aikawa: Afrilu-09-2022