Service
Manual
Page
Edition
Type
3
1187
4
0906
5
1181
34. Water inlet valve
42
34
Special tool
Repair instructions
Lime deposits can block the valve diaphragm hole
and prevent the valve from functioning properly.
It is therefore a good idea to take apart and clean
the valve regularly depending on operation
conditions and the degree of polutants and lime
content present in the water.
Valve does not open
• Check that there is voltage supply to the coil.
• Measure the voltage supply to the coil to check
for a possible power failure or short circuit.
• Take apart the valve and check the valve
diaphragm openings.
• Check the inlet filter and clean it when
necessary.
• Remove the coil and clean the coil core
surfaces.
Valve does not close
• Check that there is no voltage across the coil.
Normally the valve is closed when the coil is not
energized.
• Check the return spring.
• Check the diaphragm (pilot pressure opening).
Dismantling of the valve
1. Carefully pry off the valve coil using a screw
driver.
2. Turn and lift the valve cover using a special tool
and a wrench. (The special tool is attached to
one of the machine’s water hoses upon
delivery.)
Fig.
3
Fig.
4
Fig.
5
9109
