... on beam loading/ doffing, beam clamping, pressurizing, machine starting/stopping etc.·10.4-inch DIGITAL touch screen, ... rotates to close or open automatically upon the machine start or stop.·Safety guard rail guarantee safety ... suspension tensioner (patent product) Main Technical Parameters1.Warping range:cotton,chemical,or mixed span fiber 194- ... :380V ± 10% HFGA120 High Speed Direct Warping Machine