A knife switch with iron shell shall be installed in the power supply line, which is exclusively for this oven, and the outer plate shall be grounded.
应在供电线路中安装铁壳闸刀开关一只，供此箱专用，并将外壳接地。
2
The problem was soluted by the production line of automatic selection being composed of optical sensor , encoder, roller, plate turnover machine, steel shelf, approach switch.