... 1.Function:It is a solid fusible plug. There is a solid hole ,has a pin rod link the ... fusible alloy.when fluid coupling get a high temperature,The fusible alloy will melt ,and ... type: YOXwk.3.Notes:A.When use a temperature controlled switch ,we should also use a hydrojet fusible plug ,it ... hydrojet) melted ,we should turn off the machine to change a new one.C.The location of switch should be ...