treatment units common fault repair (phone no water)

Phone no water situation which is very common in everyday
Fault 1, a cell phone no water, first check the phone line there is no water, and if there is water that is blocking the phone using end ligation can solve the problem. If the phone line is no water on the check diversion switch. If you do not see the problem on the foot switch controlling water switch has not been opened. After exclusion check whether gas control valve of the gas supply, if the supply on and into the water, dental material water, gas control valve that is the problem, the solution, open the air control valve cleaning the inside of the scale, smeared Vaseline mounted on top.
Fault 2, all phones are not water, first three guns there is no water, no water if it is water or piping problem (solution here is not to talk about). If three guns and water, under normal circumstances is no air control valve of the gas supply on. If the gas control valve on the gas supply, disconnect the air control valve outlet pipe, stepping on the gas pedal to see no water control valve out, if no water, gas control valve dental Vacuum Former that is the question (ibid. solution ). If the water vapor that is integrated in the valve diaphragm adhesions apart and re-installed or replaced to solve the problem.