March 2004 | Manual 599082 |
3.8Filling
3.8.1Water 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.
3.8.2Dispensing 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.
3.8.3Amount 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.
3.9Heating
3.9.1The 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.
3.9.2Heating 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.
3.9.3Maintaining 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.
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