© RLS Wacon analytics GmbH +49 (0)5121 281260
July 2022
Subject to
change without notice
Pag
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71
Diagnostic functions
Pay attention to any connected controls and peripherals.
Observe the valid safety regulations.
To do this, call up the following programme function:
Programming: Menu > Service > Diagnostic programme
Display
The display changes colour between red, green and blue.
Press the [OK] key to exit.
Sensor
The LED in the measuring chamber is switched on and off. In case of a defective colour sensor, an
error message appears. If the LED in the measuring chamber does not light up, check the electrical
connection of the LED at the actuator plug and in the unit. If the plugs are seated properly, the
actuator must be replaced. During the test, intensity bars for red, green and blue are displayed.
Press the [OK] key to finish.
The positioning of the connectors can be found on page 18 page.
Solenoid valve
The solenoid valve in the water inlet can be opened and closed via the [OK] button. If this is not the
case, please check the electrical connection of the solenoid valve in the unit. If the plugs are seated
correctly, measure the voltage between the connections on the valve when the valve is "open". This
should be 24 VDC. If this is the case, a fault in the electronics can be ruled out and the solenoid
valve is defective.
To exit, move the cursor to Exit and press the [OK] key.
The positioning of the connectors can be found on page 18 page.
If a sample cooler is used, the proper operation of the sample cooler must be
checked in advance to exclude any risk from hot steam or hot water.
Reagent pump
When the reagent pump is started, the peristaltic pump cassette is driven for 2 seconds. The
rotation of the rollers in the peristaltic pump cassette is visible and the rotation of the motor can be
heard. If this is not the case, check the four-pole connection of the motor on the circuit board. If
only the noise is perceptible, the hose pump cassette is defective. In the other case, a fault of the
motor or the control board is possible.
To exit, move the cursor to Exit and press the [OK] key.
The positioning of the connectors can be found on page 18 page.