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17.7 To Open Control Board
Remove screw.
17.8 To Remove Pressure Relief Valve, Air Purge Valve and Flow Sensor
C
C
1. Remove 2 retaining rings.
2. Pull down to remove water hose.
3. Pull outward to remove
Pressure Relief Valve.
Air Purge Valve
4. Turn the Air Purge Valve anti-clockwise
then remove.
Flow Sensor
6. Remove 2 retaining rings,
then remove the Flow Sensor.
5. Detach the flow sensor lead wire.
Pressure Relief Valve
During reinstall Air Purge Valve
Make sure plug is fully close
in clockwise direction.
Apply some water based
grease on packing surface
before fix with shut off valve.
Packing