Ko e tefitoʻi taumuʻa ʻo e ngaahi meʻa ʻoku ne fakamoʻoniʻi ʻa e fakaʻauha ke ʻoua naʻa taʻofi ʻa e i ai mei he ngaahi, ka ke afeʻi ʻa e efu lolotonga ʻi he ʻatakai ʻoku ngaohi ai. ʻI ha ngaahi ngaueʻanga pau, founga ʻoku tupu ai e velangofuá mo hono maumauʻi e efú, hangē ko e ukamea pe efu malalá. Ke taʻofi ʻa e faʻahinga efu ko ʻeni mei he hoko ʻa e kau tau lolotonga hono ngaohi, ʻOku angamaheni ʻaki hono fakaʻaongaʻi ʻa e ngaahi System ki he ia mo e collection.
Lolotonga e founga ko ʻeni, ʻe lava ke matuʻaki fakatuʻutamaki ʻaupito ʻa e fekainaki pe ngaahi kalofiama ʻi he i. Ko ia, ʻa e fie maʻu ki he ngaahi fakamoʻoni ʻo e fakaʻauha, ʻa ia ʻoku fokotuʻutuʻu makehe mo ngaohi mei he ngaahi naunau ʻoku kehe mei he ngaahi meʻa angamaheni.
1. Ko e ngaahi meʻa ʻoku ne fakamoʻoniʻi ʻa e fakaʻauha fakanaunau ʻaki e foila impellers, ke taʻofi ʻa e ngaahi kalofiama ʻoku ʻomi ʻe he fekainaki ʻi he vahaʻa ʻo e impeller mo e hiva.
2. Kuo pau ke fakalele ʻe he moto ʻo e fakamoʻoni fakaʻauha ke fakapapauʻi ʻoku ngaue malu ʻi ha ngaahi ʻatakai fakatuʻutamaki.