Ukuchongwa okusisiseko
1. Jonga ukuba idrowa engaphandle iyalingana na ngaphakathi nangaphandle, idrowa kufuneka ikwimo yoxande egqibeleleyo kwaye inobude obulinganayo obufanayo.
2. Ububanzi bekhabhathi yangaphakathi nayo kufuneka ilingane ngaphakathi nangaphandle, kwaye ikwimo yoxande egqibeleleyo enobude obulinganayo obufanayo.
3. Isilayidi kufuneka silinganiswe kwaye sifaniswe kumacala omabini.

(1) Yehlisa idrowa yesilayidi egudileyo yokusombulula ingxaki
[Isizathu esinokubakho] Isibiyeli esingasemva asikhuselekanga ngokufanelekileyo nangokukhuselekileyo, esibangela isibiyeli esingasemva sijike ngasemva.
[Isisombululo] Ukuqinisekisa ukuba isibiyeli esingasemva sifakwe ngokukhuselekileyo, kufuneka ukuba kubekwe izikrufu ezi-3.

(2) Ukusilela kokuVala okuthambileyo
[Isizathu esinokubakho] Iziklip zokuqhawula ezantsi ezidayini azibandakanyi ngokufanelekileyo nezilayidi ezingajongekiyo.
[Isisombululo] Qinisekisa ukuba idrowa enqamle umboniso ijongana nesilayidi xa usiva unqakrazo kuzo zombini izilayidi, kwaye jonga idrowa itshixiwe ngokukhuselekileyo.

(3) Ingxolo evela ekusebenzeni kwesilayidi
Isizathu esinokubangela
1. Jonga ukubona ukuba umngxuma ongaphantsi we-drawer ujiwe kakuhle, ukuba akunjalo, kunokubangela ukuba isikhonkwane esingasemva kwesilayidi singaphumeleli ukujija umngxuma wendawo yangasemva ngokufanelekileyo.
2. Uthuli olushiyekileyo lomthi olushiywe kwisilayidi kuloliwe ngexesha lofakelo lubangela ukuba isilayidi sisebenze ngengxolo; Ukongeza, kunokubangela ukuba isilayidi sisebenze ngokungathandekiyo.

Isisombululo
1. Qinisekisa ububanzi nobume obuchanekileyo bomngxunya wokumisa idrowa yangasemva (indawo eyongeziweyo yokusetyenziswa kwemingxunya ingasetyenziswa)
2. Susa kwaye ucoce intsalela eyenziwe ngomthi kwindawo exineneyo kwilungu eliphakathi lesilayidi kunye nokugcina ibhola.
(4) Ukucofa isilayidi esivulekileyo esivulekileyo akukwazanga ukukhupha ngokufanelekileyo

Isizathu esinokubakho
Isikhonkwane esikhokelayo sitshixiwe, idrowa kunye nomzimba womgqomo mkhulu kakhulu okanye ukujika kwesiporo kwangaphakathi.

Isisombululo
1. Qinisekisa ukuba iscrew siqinisiwe kwaye siqinisiwe.
2. Qinisekisa ukushiywa kwecala kwicala lasekunene (ukucoca) phakathi kwekhabhinethi kunye nedrowa.
3. Qinisekisa ukuba ilungu langaphakathi lithe tye kwaye akukho deformation.