Dacor Dishwasher Wartungshandbuch PDF herunterladen (Seite 13)

High Water Level Switch (continued)

Checking High Water Level Switch

Checking continuity through the high water level switch is easier at the control.

Disconnect power to dishwasher.

Gain access to electronic control and check for continuity between the L1 black wire and P3-6

(brown wire). This contact should be open.

These wires are connected to center terminal #1 and terminal to the right of center #3 on

the switch.

This contact will close when water inside the tub reaches the rails for the lower wash rack.

Wash Motor

The wash motor, mounted to left side of the sump, is connected

to it by two separate hoses. The permanent split capacitor motor

operates on 120 VAC, 1.8 amp 60 Hz.

The motor speed varies as needed for different wash cycles. The

speed varies by changes made to the voltage sine wave, as power

is applied to the motor. At full speed the wash motor runs at

approximately 2800 RPM.

The motor speed varies at the beginning of the wash cycle as the

tub fills with water. After the wash motor starts at 310 RPM, it

increases speed at a rate of 100 RPM/second until full speed is

reached. The motor speed also varies during Pulse Wash, where

the motor speed is changed from 1600 RPM to 2800 RPM to aid in

cleaning the filter, while reducing noise.

The electronic control monitors the speed of the motor through

the tachometer mounted on the rear of the motor. (See Figure

13) The tachometer is an AC generator, which provides feedback

information to the control for regulating the motor speed.

Checking the Wash Motor

Disconnect dishwasher from power supply.

Due to the location of the motor disconnect plug, resistance

readings should be made at the control.

• Remove outer door panel to gain access to the control.

• The run windings for the motor are connected between

P3-1 and P3-4.

The resistance should read 14 ohms.

Checking the Tachometer

Disconnect dishwasher from power supply.

Due to the location of the motor disconnect plug, resistance

readings should be made at the control.

• Remove outer door panel to gain access to the control.

• The tachometer leads are between P3-10 and P3-11.

• The resistance should read 246 ohms.

Page 3-6

seCTion 3 - CyCle, sysTeMs & CoMPonenTs

WASH MOTOR – FIGURE 12

FIGURE 13

Tachometer mounted on the rear

of the motor

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 33 34

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