Problem

Blockage in mixing-piece

Hint

Most of the time a small blockage.

Action

Check and clean the mixing piece for small particles.

Problem

Blockage in sample tube

Hint

Most of the time a small blockage.

Action

Clean the sample tube or replace the sample tube.

Problem

Very slow aspiration of the sample

Hint

Most of the time a small blockage in the line sample probe to fill nozzle.

Action

Check the flow sensor readings.
Check for small particles in the sample probe.
Check for small particles in the mixing piece.
Check vacuum by using a vacuum gauge.

Problem

Bad vacuum flow

Hint

Check the flow sensor readings.

Action

Check vacuum by using a vacuum gauge.
Check the vacuum regulator.
Check the orifices.

Problem

Sample control pinch valve error

Hint

Check the pinch valve is operational with Valve control (Valve control, Valve control, Valve control)

Action

Check the pinch valve is mounted correctly onto the stainless steel plate.
Check if rubber O ring under the valve body is installed.
Check the wiring of the pinch valve is not broken.