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March 2004 Manual 599082
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3.8 Filling
3.8.1 Water Inlet
The tub of the DishDrawer fills by a single water inlet hose, hot water connection for USA and Japanese products
and cold water connection recommended for the Australasian/UK/ Europe products. From the connection to the
water supply in the kitchen, the inlet hose enters the cabinet of the dishwasher at the base, onto a dual water valve.
Each tub is supplied water independently via one of the dual valve coils and a fill hose that runs through a
customised link assembly at the back of each tub and travels along the base of the tub under the wiring cover to the
front. At the front of the tub, the fill hose connects to the detergent dispenser which allows water to enter the tub,
firstly through the pre rinse section of the dispenser for the pre rinse cycle and secondly through the main wash
section for all other cycles.
In a product fitted with a water softener, water is directed through the softener before entering the dispenser.
3.8.2 Dispensing Detergent and Rinse-aid
The dispenser is mounted in the front wall of the wash tub.
The detergent dispenser consists of two detergent chambers, one for pre wash and the other for the main wash.
The detergent dispenser door is opened manually for detergent loading and then manually closed ready for the
detergent to be transported to the wash tub by the inlet water. To enable each detergent chamber to be dispensed
separately, an inlet water diverter valve controlled by the electronics is required.
Additionally a positive displacement pump unit and storage tank are incorporated within the dispenser to supply rinse
aid. The rinse aid dispensed volume can be adjusted by the customer in option adjustment mode. A glowing red
light on the tank filler cap indicates an empty rinse aid tank.
3.8.3 Amount of Water
The tub fills with approximately 2.5 litres / 0.8 US gallons of water, approximately level with the base of the spray
arm. Once this level is reached, the wash pump (which has sensed the fill via the electronics) becomes primed and
pumps the water through the spray arm which will then rotate. The load on the wash pump is constantly monitored
throughout the wash cycle and the water level adjusted if necessary.
3.9 Heating
3.9.1 The Element
The heater plate is an element consisting of a porcelain enamelled steel plate with a thick film resistive circuit printed
onto the dry side. As well as the heating circuit a large dropping resistor is also printed onto the heater plate which
forms part of the controllers power supply. The element is clamped in place by a lockring nut and supports the motor
at the base of the tub.
3.9.2 Heating the Water
The heater plate lies beneath the filter plate. A flow through water heating system is created during the wash cycle
by allowing water to flow through the filter plate, over the surface of the element and into the wash pump.
3.9.3 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
unserviceable and if they fail a new heater plate is required.