Te mātāpono mahi o te pouaka whakamatao ahumahi : ka whakamatao te pūnaha whakamatao o te pūwero i roto i te pouaka whakamatao i te wai, kātahi ka whakawhitia e te papu wai te wai whakamatao pāmahana iti ki ngā taputapu taiaho ka tangohia te wera, kātahi ka hoki te wai e rere ana ki te tāke hei whakamatao anō. Ka taea e tēnei rere te whakatutuki i te kaupapa whakamatao mō ngā taputapu ahumahi.
Pūnaha tohanga wai, he pūnaha nui mō te whakamatao ahumahi
Ko te pūnaha tohanga wai he mea hanga nui mai i te papu wai, te pana rere, te pūoko rere, te tirotiro pāmahana, te takirere wai, te tātari, te mimiti, te takirere me ētahi atu wāhanga.
Ko te mahi a te pūnaha wai he whakawhiti i te wai whakamatao pāmahana iti ki roto i ngā taputapu hei whakamatao mā te papu wai. I muri i te tango i te wera, ka wera te wai whakamatao ka hoki ki te pouaka whakamatao. I muri i te whakamataotanga anō, ka haria te wai ki ngā taputapu, ka hangaia he huringa wai.
Ko te tere rere te mea tino nui i roto i te pūnaha wai, ā, ko tōna mahi ka pā tika ki te pānga o te whakamatao me te tere whakamatao. E whai ake nei ka tātarihia ngā take e pā ana ki te tere rere.
1. He nui rawa te ātete o te pūnaha wai katoa (he roa rawa te paipa, he iti rawa te diameter o te paipa, ā, he iti ake te diameter o te paipa PPR i hangaia mō te whakarewa wera), e nui ake ana i te pēhanga o te papu.
2. Tātari wai kua āraia; te whakatuwheratanga o te pūwero o te takirere kuaha; ka tukuna e te pūnaha wai te hau poke; te takirere putanga aunoa kua pakaru, me te pana rere raruraru.
3. Kāore i te pai te puna wai o te tāke whānui e hono ana ki te paipa whakahoki (kāore i te rawaka te teitei, kāore i te tino teitei o te pūnaha, he iti rawa rānei te whānui o te paipa puna wai)
4. Kua āraia te paipa tohanga o waho o te pouaka whakamatao
5. Kua āraia ngā paipa o roto o te pouaka whakamatao
6. He poke kei roto i te papu
7. Ka puta te raruraru tawhito o te papu nā te pakaru o te rotor i roto i te papu wai
Ko te tere rere o te pouaka whakamatao e whakawhirinaki ana ki te ātete wai e whakaputaina ana e ngā taputapu o waho; ka nui ake te ātete wai, ka iti ake te rere.
![Ngā whakamatao wai ahumahi TEYU mō te neke atu i te 100 ngā ahumahi hanga me te tukatuka]()