Ndi mawonekedwe a kukana kutentha, kukana refrigerant, kuzizira kukana, kukana ma radiation etc, ndi mphamvu zamakina apamwamba, kukhazikika kwa mpweya, kukana kwamankhwala abwino komanso kukana kwa refrigerant, kuchulukira kwamphamvu, 220 polyamide-imide enameled copper (aluminium) waya wamakona anayi ndi ambiri. amagwiritsidwa ntchito mufiriji kompresa, mpweya wowongolera mpweya, zida zamagetsi, ma mota osaphulika ndi ma mota ndi zida zamagetsi zomwe zimagwiritsidwa ntchito potentha kwambiri & kuzizira, ma radiation apamwamba komanso mochulukira.Zogulitsazo ndi zazing'ono, zokhazikika pakugwira ntchito, zotetezeka pakugwira ntchito komanso zodabwitsa pakupulumutsa mphamvu.