Pūnaha hanganga:
1) Hohoro te whakakapi i te whakamahana ki te ngongo raana me etahi atu tikanga whakamahana.
2) Ko te thermocouple kawemai, te mana o te pāmahana tika me te oranga o te ratonga.
3) Hoahoa impeller hiki papu ine, wa tiaki ia ra.