Asko DW90 Series Service Manual page 12

Service manual DW90
Component description
Drain pump
The drain pump is fitted to the bottom drain and
can be replaced from the front of the machine. In
the bottom drain, under the filters, is a cleaning
plug which when removed enables the customer
to clean the pump housing. In the event of a
blockage the pump changes its direction of
rotation to try to clear the blockage.
Purpose: To drain the water from the cleaning
compartment in accordance with the program
specification and in case of overflow.
Detergent and rinse aid dispenser
The dispenser has one container for detergent
and one container for rinse aid. The containers
are opened by activating the electromagnet
found on the lock of each container. When
first activated detergent is dispensed and when
activated a second time rinse aid is dispensed.
A weight (which is activated when the door
is opened for loading and unloading) resets
the mechanism so that the dispenser always
dispenses detergent first when a new program
is started.
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Fan
The fan is fitted to the top edge of the inner
door and comprises a fan motor, a fan housing,
a venting duct, a double-sided impeller, a
damper and a Wax motor that controls the
damper function. The fan works throughout
most of the dishwashing program in order to
reduce the formation of condensation between
the machine's inner and outer doors and to
eliminate condensation between the outer door
and the cover door on fully integrated machines.
During the drying program the fan sucks in
cold, dry air from outside via the duct in order
to cool it. The Wax motor opens the damper
slowly allowing the fan to suck in the hot, damp
air from the cleaning compartment. The two air
flows are mixed in the duct where the moisture
condenses into water that is routed into the
cleaning compartment. The air is vented through
a nozzle under the outer door.
Purpose: To vent the hot, damp air from
the cleaning compartment so that the dishes
dry during the drying program and to prevent
condensation forming between the machine's
inner and outer doors.
Cables
The machine is fitted with coded connectors
to prevent incorrect wiring. The cables comply
with the Rast 2.5 and Rast 5 standards.