Zanussi FA 1023 [18/39] Solenoid

2001.07 eb 18 599 34 84-67

6.5 SOLENOID

6.5.1 General features

This element provides water to the detergent dispenser and it is

electrically controlled by the pressure switch.

1. Water inlet

2. Solenoid body

3. Filter

4. Capacity reducer

5. Coil

6. Spring

7. Movable core

8. Rubber

9. Membrane

10. Water outlet

In rest condition, the core, pushed by a spring, keeps the central hole of the membrane closed and so this

membrane seals hermetically the access to the water intake duct.

When the coil is powered, the core is pulled and the central hole of the membrane is freed and the valve

opens.

Cold water solenoid

It is used on all the washing machines models and has a nominal capacity of about 6.5-9.5 litres per minute.

The water pressure must be between 3 and 100 N/cm

Warm water solenoid

It is mounted, together with the cold water one, in the models in which there is also the warm water supply.

The nominal capacity is about 5-6 litres per minute.

6.5.2 Electric symbol

6.5.3 Efficiency check

IT ALWAYS FILLS WATER EVEN IF THE APPLIANCE IS OFF:

- Mechanically solenoid locked, replace solenoid

IT ALWAYS FILLS WATER DURING WASHING CYCLE:

- Check pressure switch hydraulic circuit and pressure switch

IT DOES NOT FILL WATER:

1. The solenoid vibrates (coil hum) but it does not fill water:

- Check the hydraulic circuit of solenoid supply (closed cock, insufficient water pressure, blocked

supply tube)

- Mechanically locked solenoid: replace solenoid

2. Solenoid does not vibrates:

- Measure coil continuity (3500 - 4500 ohm): if faulty replace solenoid

- Mechanically locked solenoid: replace solenoid

- Check pressure switch hydraulic circuit and pressure switch

- Check correct operating of the timer or of the main electronic board