5. Water release valve
Water release valve is a normal close valve.
Problem1: The valve can not close completely you will see the steam and water flow by the pipe.
Problem2: The valve can not open during the period of releasing the pressure. There is much water left
after the cycle.
Check the solenoid coil if it can work. Check the circuit of water valve by multimeter. Check if the circuit is
break. Or you may measure the solenoid coil directly as picture. The resistance is about 80 .
Steam flow
14
6. Air release valve
Air release valve is a normal open valve.
Problem1: The pressure can not be released after power off if the valve does not work.
Problem2: The valve can not close completely after it is electrified. The pressure will not rise during the period
of raising pressure. And you will see the steam and water flow by the pipe.
Check the solenoid coil if it can work. Check the circuit of water valve by multimeter. Check if the circuit is
break. Or you may measure the solenoid coil directly as picture. The resistor is about 80 .
7. Vacuum pump valve
Problem : The air leak from used water tank by the valve when vacuum pump is working. And the pressure can
not decrease.
Check the solenoid coil if it can work. Check the circuit of vacuum pump from mainboard to valve by multimeter.
Check if the circuit is break. Or you may measure the solenoid coil directly as above picture.
The resistor is about 80 .
8. Vacuum pump
Check the vacuum pump works or not. Pull out the connector from the mainboard.
Measure the resistance of the vacuum pump.
The value should be 200k ohm~400ohm.
It depends on different type of the vacuum pump.
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