2010 dmm 50/96 599 73 68-54
11.3 Drain pump – Aqua control
• When replacing the pump, please refer to the code shown in the list of spare parts
relating to the appliance.
11.3.1 General characteristics
1. Wheel
2. Rotor
3. Stator
The pump, which drains the water at the end of the various washing cycle phases, is centrifugal and is actuate
by a synchronous motor.
The rotor consists of a permanent magnet and the direction of rotation can be either clockwise or anticlockwise.
The rotor can turn by approximately a quarter of a revolution without turning the wheel. Consequently, if a
foreign body is stuck in the wheel, the rotor can perform small movements clockwise and anticlockwise until the
foreign body is released.
The flow rate of these pumps is approximately 18 ÷ 20 l/min, and the maximum head is 90 cm.
Fitted with thermal cut-out.
Important!
Synchronous pumps, when powered on empty (disconnected from the water circuit), may not start in some
cases because their very construction makes them need an antagonist torque on the wheel to allow the rotor to
move in one of the two directions.
The pumps should therefore only be tested once fitted to the appliance, after a little water has been filled.
The drain pump is powered by the main circuit board through a triac, as follows:
ª for a pre-determined period (and an alarm might be displayed, see table of alarms).
ª until the electronic pressure switch closes on empty, after which the pump is actuated for a brief period or
passes to the subsequent phase.
1. Main circuit board
17. Aquacontrol sensor
18. Drain pump
1
2
3
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