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3.7
Wash Cycle
3.7.1 Tub
The tub is the main cavity where all the wash activity occurs. The tub is a plastic recepticle
which has a wash pump and sprayarm at the base. The tub also has guide vanes around its
walls which direct falling water from the wash cycle in a clockwise direction around the
filter plate. This clears the filter plate of food particles into the sump where they can be
trapped or pumped out during the drain cycle.
3.7.2 Rotor
The rotor is a four pole permanent magnet rotor with a graphite bearing at each end of the
vertical shaft. At the lower end of the rotor shaft is the drain impellor and at the upper end
is the wash impellor.
3.7.3 Spray Arm
The spray arm is shaped for most efficient waterflow. The holes are positioned for best
penetration into the washload, with the water jets angled to ensure the sprayarm rotates at
the most efficient speed.
3.8
Heating
3.8.1 The Element
The heater plate is an element consisting of a porcelain enamelled steel plate with a thick
film resistive circuit written onto the dry side. The element is clamped in place by a
lockring nut and supports the motor at the base of the tub.
3.8.2 Heating the Water
The heater plate lies beneath the filter plate. This creates a flow through water heating
system during the wash cycle by allowing water to flow through the filter plate, over the
surface of the element and into the wash pump.
3.8.3 Maintaining the Temperature
Attached to the element is a sub printed circuit board with a temperature sensitive
thermistor . This connects by means of a RAST 2.5 connector system to the wiring harness
of the element. Sensor components are unservicable.
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