Romina that plastic tube called diaphragm is fitted to the bottom of the tub or tub has a ring where it is embedded and is supported against the bottom and against the same bowl, in this plastic that has a peak the rubber sleeve is connected and the Another end of the hose goes in a circular device called a pressure switch that is housed under the keypad next to the plate. Verify that the sleeve is well connected at its two ends and fits the diaphragm well in the bottom of the tank. Discuss how it went and rate the responses, greetings