Zanussi Ls3 Manual

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3. SPECIFICATIONS FOR ACTUATORS AND SENSORS
3.1 COMPONENTS
TYPE OF COMPONENT POWER AVAILABLE TYPE OF CONTROL
Wash pumpMax 250WTriac & relay
Drain pumpMax 100WTriac & relay
Washing heaterMax 2100W Relay
Water fill solenoidMax 10WTriac
Regeneration solenoidMax 10WTriac
Detergent/Rinse-aid solenoidMax 10WTriac
Fan motorMax 10WTriac
3.2 SENSORS
TYPE OF SENSOR TYPE OF READING TYPE OF COMPONENT
Salt sensor Digital 5 V Reed
Rinse-aid sensor Digital 5 V Reed
Temperature...

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4 OPERATION OF THE WASH / DRAIN MOTOR
4.1 WASH MOTOR
CHARACTERISTICS
This dishwasher is fitted with a single-phase variable-speed asynchronous motor.

A tachimetric sensor, fitted to the interior of the motor, constantly monitors the speed of the motor,
which is transmitted to the electronic control system.
MEASURING THE SPEED OF THE MOTOR
The operation of the motor during the washing cycle is controlled by the electronic control system,
which operates the motor at...

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This appliance features the conventional washing system, in which the mechanical action is obtained
by the rotation of the single motor. This drives the water into the hydraulic circuit and actions the two
spray arms simultaneously.
DEFINITION OF THE WASHING SYSTEM
In order to optimize the washing programmes, this appliance offers two different washing systems;
these are governed by the electronic control system, which powers the motor at two...

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4.5 5. HYDRAULIC CIRCUIT
KEY
1. Anti-flooding device 11. Sump
2. Anti-overflow device 12. Pressure switch
3. Fill solenoid 13. Connector siphon for anti-overflow device
4. Air-Break 14. Cutting valve sump
5. Intake valve for regeneration chamber 15. Wash motor
6. Regeneration chamber 16. Drain motor
7. Vent valve 2
nd regeneration chamber 17. Non-return valve
8. Regeneration solenoid 18. Delivery valve to upper spray arm
9. Salt container 19. Upper sprayer
10. Resin...

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For dishwashers fitted with motors with tachimetric sensors (1.5 New Generation models), the
electronic control system is designed to control the water fill by identifying the signals received from
the pressure switch (which thus acts as a pressure sensor).
The tachimetric sensor which signals the speed of the motor to the electronic control system is
independent of the water fill level control function.
5.1.1 BLOCK DIAGRAM OF...

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The quantity of water necessary to perform the washing cycle is determined exclusively by the closure
of the contact on the pressure switch, which switches from EMPTY to FULL.
In order to assure that the hydraulic circuit is correctly balanced, this system ensures that, if the
pressure switch re-opens on EMPTY, the water is replenished until the pressure switch returns to
FULL.
The fill phase is subdivided into the following sub-phases:
WATER...

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During the entire duration of the fill phase (i.e. from sub-phase 5.2.1 to sub-phase 5.2.4), the solenoid
valve may remain in the open position for a maximum overall time of 4 minutes.

Within this period, the system detects whether the pressure switch signal has stabilized on
FULL.

If the pressure switch signal stabilizes on FULL (sub-phase 5.2.4) after this 4-minute period
during which the solenoid is open, a Time-out is generated and the...

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When the washing cycle ends, the appliances passes to the drain phase.

In this phase, in order to ensure that the hydraulic circuit is empty before the start of the subsequent
phase (water fill), a control procedure is carried out at the end of the drain phase to check that the
contact of the pressure switch is open on EMPTY.
If this is the case, the appliance passes to the subsequent phase.

If, due to a malfunction in the drain phase, the...

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5.5 SPECIAL REGENERATION CYCLE
With the new water softening system, the “special regeneration” process is controlled electronically,
and is subdivided into 5 levels as follows:
REGENERATION VALUES
LEVEL INDICATION WASHING CYCLEFILL
PHASESWATER HARDNESS
DEFINITIONLed  [ LD1 ]AUTONOMY REGENERATION Nº º F (TH) º D (dH)
WH11 flash
No regeneration - 0 > 8 0 >  4
WH22 flashes
5 cycles in the 6th cycle 24 9 > 30 5 > 18
* WH33 flashes
3 cycles in the 4th cycle 16 31 > 50 19 >...

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6 «ACTIVE» DRYING SYSTEM
The “Active Plus” drying system features a close integrated circuit with bidirectional convective
movement ; air is drawn in from the exterior thus allowing the circulation of the inner warm air.
6.1DEFINITION OF THE SYSTEM
The drying system is based on the natural circulation of the hot air produced during the hot rinse cycle,
in which the steam (humid hot air) circulates slowly through two ducts, this activating the process of
condensation....