Electrolux Diva Service Manual | Page 18
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3.3 SUMP ASSEMBLY
The sump is a monobloc container in plastic material, and consists of three thermowelded sections:
PRESSURE, WASHING and DRAIN.
The sump is located on the bottom of the tub, with a perimetral
sealing ring, and is secured from the inside by four screws.
PRESSURE section (A)
An integral part of the WASHING section, in which a double
pressure chamber controls the level of the water.
WASHING section (B)
Located beneath the main stainless steel filter, this section collects
the filtered water, which is then re-introduced (clean) into the circuit
and ducted to the spray arms.
- Direct hydraulic connection to the lower spray arm.
DRAIN section (C)
Located beneath the circular filter in the bottom of the sump, where
the dirt is deposited before being drained.
- Housing for the drain filter.
Four ball valves built into the sump perform a number of specific
functions.
Pressure switch pressure valves (2):
- Positioned inside the respective pressure chambers.
- In case of tilting of the appliance, the valves prevent the
residual water in the sump from entering the connections of the
two pressure switch tubes.
Drain pump breather valve:
- This valve is located internally, near the drain pump breather.
- During the water fill phase, the valve opens and maintains the
drain circuit open so that the air is expelled. This enables the
pump to fill with water and prevents cavitation.
Sump bottom valve:
- Located internally, near the sump bottom.
- During the water fill phase, the valve closes to separate the drain section from the washing section.
- During the drain phase, the valve opens, thus connecting the drain and washing sections.
The following connections are located externally:
- Hydraulic connection to the softener via a rubber hose
- Hydraulic connection to the drain pump, via a rubber coupling
- Hydraulic connection to the washing pump, via a rubber coupling
- Housing for the thermostat or temperature/turbidity sensor
- To the level and safety pressure switches, via two small tubes of different colours.
3.4 DRYING DUCT
The drying duct is a moulded plastic container consisting of two
sections which are pressure-fitted together. The drying duct is
used in Active and Turbo drying.
During the drying phase, the function of the duct is to transfer
the steam from inside the tub into the fill tank condenser, where
it is condensed.
The drying duct is positioned externally above the tub and fixed
from the inside by a snap ring.
3.4.1 DRYING DUCT + FAN
Turbo drying is obtained by means of a fan located inside the
drying duct.
The fan consists of a small synchronous electric motor and an
elastic drive belt which actions the suction fan blade.
When the fan is in operation, it creates a forced air movement.
A
B
C
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