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3.0 TECHNICAL OVERVIEW
3.1 Electronics
The DD601 electronic controller has two separate micro controllers on the main
printed circuit board. One is for motor control and output switching and the other is
for controlling interface and console functions.
The user interface comprises a printed circuit board for front controls and a touch
switch panel for internal controls.
The electronics can connect to a computer service tool via a serial communications
port for fault finding and product information.
All output peripherals (solenoids, fans etc), except the heating element, are run on low
voltage (24v).
The power for all low voltage devices comes from a 100w switchmode power supply,
which is cooled by a heatsink and when necessary the drying fan.
The element is switched by a relay and protected by a fail safe relay.
3.2 Motor
The motor is a fully electronically controlled 40V 60w 3 phase 6 pole brushless
DC motor, running at approximately 2300-2850 depending on wash cycle selected,
2500 rpm on Normal, Fast, and Rinse cycles, 2300 on Delicate and 2850 on Heavy
Wash, 4200 rpm on Drain.
3.3 Cabinet
3.3.1 Chassis
On the double drawer the double chassis is one complete assembly composed of 5 steel
metal components locked together by a proprietry riveting process. The chassis
exterior is made of white prepaint, while other components are made of
electrogalvanised material. On the single drawer four bolts and washers are used to
secure the chassis to the shelf using the steel inserts.
Unlike most other dishwashers, the chassis assembly is a load carrying structure
designed to impart stiffness to the product and to ensure deflection is minimised.
The feet of the cabinet are assembled into the chassis by means of four steel inserts
which are clinched in place to form a permanent threaded connection.