Imishini ifanele ukupakishwa okuzenzakalelayo kwamabhodlela, ibhokisi, ethinini, isikhwama nezinye izinto.Umkhawulo wangaphambili ungabambisana nomshini wokukhulula ukuthutha ibhokisi elingenalutho eligcwaliswe kukhava yangemuva endaweni yangaphakathi yomshini wokupakisha;Umugqa owodwa wokuphakelayo komkhiqizo, okokusebenza kuzohlela ngokuzenzakalelayo imikhiqizo, okukhethekile kuzothatha futhi kufake imikhiqizo ebhokisini, bese ibhokisi eliqediwe liphuma emishinini, yonke inqubo iqedwa ngokuzenzakalelayo, ngaphandle kokungenelela okwenziwa ngesandla.Ilungele ukusetshenziswa kwamapayipi, ukuhamba kalula;Ukulawulwa kohlelo lwe-PLC, ukusebenza okulula, isenzo esizinzile.