Umphezulu othe tyaba yenye yezakhiwo zesikhunta. Ngaphambi kokuba uyile, yenza uhlalutyo olucwangcisiweyo lwesakhiwo semveliso. Ngokwesakhiwo semveliso, indlela esetyenzisiweyo ukujongana nezinye iindlela zokusika (indlela yokujongana neendlela zokusika ikwanendawo yomqolo), emva koko indawo yomqolo kunye nendawo yokusika ithambekele Uphi umahluko?
Umgaqo osisiseko womphakamisi kunye nendawo yomqolo kukutshintsha intshukumo ethe nkqo yesikhunta ngecala elithe tye. Umahluko omkhulu usekwe kwimithombo eyahlukeneyo yamandla okuqhuba: umphakamisi uhamba kakhulu ngokushukuma kwepleyiti yethimble. Akufani nokuba indawo yomqolo isekelwe kuyilo lokuvulwa nokuvalwa kwesikhunta sendoda nesetyhini. Ke ngoko, uyilo lomphakamisi lunxulumene nokubetheka kwepleyiti ye-ejector, umahluko omkhulu phakathi koyilo lomphakamisi kunye noyilo lwendawo yomqolo.
Iingxaki ekufuneka ziqwalaselwe xa kusenziwa uphahla oluthambekileyo:
1). Uphahla oluthambekileyo aludlali nje kuphela indima yokutsala umbindi, kodwa lunokudlala indima yokukhupha. 2). Uphahla oluthambekileyo kufuneka luyilwe ngomzimba othe tye we-5-10MM ubude njengendawo yokutywina kunye nendawo yokuchukumisa. 3). Umgama wokutsala umbindi kufuneka ube mkhulu ubuncinane nge-2mm kunobunzulu obungaphantsi komgangatho. 4). Kufuneka kubekho indawo eyaneleyo yokuba umphezulu othambekileyo utyibilike kwicala apho umphezulu othambekileyo utyibilika khona kumphezulu weglue yemveliso, kwaye akufuneki kubekho ukutshiza ngeglue okanye ukuphazamiseka kwezinye iindawo.

Ukuba umphezulu uthambekile, uya kushiya uphawu kwimveliso, nto leyo eqhelekileyo.