Kia Mōhio Mai:

(1) Kaua ngā hiri EPDM e pā ki ngā whakarewa kakara mō te neke atu i te hawhe haora.

(2) Kāore e taea e te taha o muri o te pereti te pā tika ki te whenua i te wā e horoia ana.

(3) I muri i te horoinga wai, tirohia marietia ngā pereti me ngā gasket, ā, kaua rawa e waiho he toenga pēnei i ngā matūriki totoka me ngā muka ki runga i te mata o te pereti. Me whakapiripiri, me whakakapi rānei te gasket kua tihoretia, kua pakaru.

(4) Kāore e whakaaetia te whakamahi i te paraihe whakarewa i te wā e horoia ana te pereti me te gasket.

(5) I te wā e horoi ana me te pū wai pēhanga teitei, me whakamahi te pereti mārō, te pereti whakapakari rānei hei tautoko i te taha o muri o te pereti (me hono katoa tēnei pereti ki te pereti whakawhiti wera) hei ārai i te rerekētanga, kaua te tawhiti i waenga i te pū me te pereti whakawhiti e iti iho i te 200 mm, kaua te pēhanga werohanga mōrahi e neke ake i te 8Mpa; I taua wā, me aro ki te kohikohinga wai mēnā kei te whakamahi i te pū wai pēhanga teitei kia kore ai e poke i te papa me ētahi atu taputapu.

2  Te horoi matū

Mō te paru noa, e ai ki ōna āhuatanga, ka taea te whakamahi i te kawakawa he iti iho i te 4% te kukū o te papatipu, te waikawa rānei he iti iho i te 4% te kukū o te papatipu, ko te tukanga horoi koia tēnei:

（1）Pamahana horoi：40～60℃。

（2）Te horoi i te taputapu ki muri, me te kore e wetewetehia.

a) Tūhonoa he paipa ki te paipa tomo me te paipa putanga i mua i te wā;

b) Honoa ngā taputapu ki te "waka horoi mīhini";

c) Papuhia te otinga horoi ki roto i ngā taputapu i te taha rerekē e rite ana ki te rere o te hua noa;

d) Horoihia te wai horoi mō ngā meneti 10~15 i te tere rere o te pāpāho o te 0.1~0.15m/s;

e) Hei whakamutunga, hurihia anō ki te wai ma mō ngā meneti 5-10. Me iti iho i te 25ppm te nui o te hauota i roto i te wai ma.

Kia Mōhio Mai:

(1) Mena ka whakamahia tēnei tikanga horoi, me waiho te hononga tāpiri i mua i te huihuinga kia maeneene te tango i te wai horoi.

(2) Me whakamahi te wai ma hei horoi i te whakawhiti wera mēnā ka mahia te horoinga whakamuri.

(3) Me whakamahi he kaihoroi motuhake hei horoi i ngā paru motuhake i runga i ngā āhuatanga motuhake.

(4) Ka taea te whakamahi ngātahi i ngā tikanga horoi ā-ringa me te matū.

(5) Ahakoa te tikanga e whakamahia ana, kāore e whakaaetia te waikawa hauwaiora ki te horoi i te pereti maitai kore waikura. Kāore e whakaaetia te whakamahi i te wai neke atu i te 25 ppm te nui o te hauwaiora hei whakarite wai horoi, hei horoi rānei i te pereti maitai kore waikura.