1. Ukushintsha kwezinga lendle.
2. Imigqa kagesi ephezulu iphazamisekile.
3. Ishubhu le-laser liphukile noma lishisiwe.
4. Ukunikezwa kwamandla kwe-laser kuphukile.
5. Ukujikeleza kwamanzi “kuhlanganisa namapayipi amanzi avaliwe kanye namaphampu amanzi angasebenzi”
6. Ulayini ongangeni amanzi wephukile noma okuthintwayo kubi.
7. Akukho okokufaka okungu-220V kumthombo wamandla we-laser.
8. Ayikho isignali evela kumandla we-laser “Ikhebuli yesiginali iphukile futhi uxhumano lubi, i-relay elawula ukuphuma kokukhanya iphukile, ibhodi liphukile futhi uxhumano lubi.
9. Umugqa wesibili womugqa ubhajwe.