If the solenoid valve fails to close when
the power is disconnected, it needs
cleaning:
1. Isolate the water supplies and relieve
the pressure by operating an outlet.
2. Switch off the power and remove the
nut and the washer which hold on the
solenoid coil.
3. Remove the solenoid coil. If the
solenoid coil is 'open circuit' then
replace it (Normal impedance is
approximately 3 ohms (2022), and 8
ohms (2028)).
4. Remove the four cap screws the
washers, the cover and the cover
spring.
5. Carefully remove the diaphragm
assembly.
6. Inspect the rubber of the diaphragm.
If the rubber is perished or damaged,
th e n re p la ce th e d ia ph ra gm
assembly.
7. Clean out any residue or debris from
the body and make sure that all the
holes are clear.
8. Reassemble the components in
reverse order.
SV2022/SV2028 Solenoid Valves
Cleaning the SV2022/SV2028
Solenoid Valves
Nut
Washer
Electrical
Connector
Cap Screw
Cover
Diaphragm
Assembly
Body
Solenoid Coil
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