... and usage1) Dismantle the end cover and install the sealing sheath. Then fasten them on the end face of the ... bottom cover. After putting all the control lines into the sealing sheath, fasten them at the connection ends of different ... .COB61,COB61A, COB62, COB62A, COB63, COB63A, COB64 ,COB64A,COB65Production: Control Box(switch control box,pushbutton control box) COB 61, COB61A, COB62, COB62A