Download ciSeries Technical Service Manual

ciSeries Technical Service Manual
Viscometer Sensor
The viscometer sensor is located on the back wall, lower left hand corner. The sensor is an inductive
sensor for detecting the viscometer ball made of stainless steel. The sensor detects when the ball
moves upward to ensure viscometer is working. The sensor then detects when the ball returns
detecting the ball fall time determining the thickness of the fluid, giving the viscosity time on the
Viscosity Status screen.
Troubleshooting:
The sensor has an integrated LED and will light at the beginning cycle of the viscosity check and also at
the end. This indicates the sensor is working and the ball is moving (correct operation). In the event the
LED does not light at the beginning, the system will also display the following Error screen “Viscometer
Error”. This indicates either the sensor has failed or the ball is stuck in the viscometer, or no fluid is
present in the viscometer.
Potential Solutions:
- Verify sensor is good or bad, replace as necessary.
- Ensure sensor is plugged into the PCB correctly.
- Verify the ball is stuck in viscometer, disassemble/clean viscometer.
- The viscometer must be free of air to operate correctly. If the return line from the
viscometer to the ink reservoir is not submerged in the ink the line will allow air to
collect in the viscometer. Verify no damage to tubing and correct as necessary.
- Ensure viscometer valve is functioning, use “Valve Test”.
- Ensure the Pressure Restrictor is not clogged, clean/replace as necessary.
Revision 1.11
Page 131