1. Kev tiv thaiv hluav taws xob ntawm lub tshuab nqus tsev hluav taws xob ntsuas nrog lub ntsuas ntsuas tsis kam;
2. Siv lub tshuab hloov pauv tus yam ntxwv ntsuas ntsuas cov yam ntxwv ntawm lub tshuab nqus tsev vacuum breaker, xws li kaw thiab qhib lub sijhawm, ceev, synchronization, bounce thiab lwm yam tsis.
3. Siv vernier calipers los ntsuas qhov mob stroke thiab overtravel ntawm lub Circuit Court breaker.
4. Ntsuas lub tshuab nqus tsev kawm ntawv ntawm lub tshuab nqus tsev vacuum breaker (tshwj tsis yog kev saib xyuas txhua hnub).
5. Ntsuas qhov rwb thaiv tsev tiv thaiv ntawm lub tshuab nqus tsev vacuum breaker.
6. Ua lub zog zaus tiv thaiv qhov ntsuas hluav taws xob ntawm lub tshuab nqus tsev Circuit Court breaker.
7. Kev ntsuas hluav taws xob tsawg rau kev kaw thiab qhib kev ua haujlwm.