Troubleshooting (Vacuum and liquid)

For general trouble shooting, see Vacuum errror

Check in case of E9 Air flow failure:

• The connection between the flow sensor output port and tube
• The three tube connections between the black T-connectors
• The tube connections between the blue filter and the connectors
• The tube connection from the blue filter to the fill block
• The fill block washer
• The fill nozzle itself
• The tube connection from the fill nozzle and the sample tube
• The sample tube at the pinch valve.
• Fill nozzle o-ring
• Pipette v-ring or pipette itself

In case of vacuum errors:

Check the fill nozzle on the O ring.
Check if the nozzle is assembled correctly.
If needed: Perform flow test and check all 84 numbers.
When this is OK and there is still no aspiration, in can be caused by a blockage in the mixing-piece.
Check in case of vacuum errors:

• The O-ring in the fill nozzle
• If the nozzle is assembled correctly.

If needed:
Perform flow test and check on all 84 numbers.

When this is OK and there is still no aspiration or are still vacuum errors: check other possible causes:

• blockage in the mixing-piece.
• blockage in the fill block washer, clean fill block
• blockage of the vacuum line from flow sensor to the fill block
• blockage of the blue filter, replace filter
• blocked or wrong assembled liquid separator, clean liquid separator
• flow sensor malfunction, replace flow sensor
• blockage in the manifold or manifold lines, check for clogging
• defective vacuum pump, replace pump

Vacuum stabilization errors are usually caused by a leaking system:

• Check sample tube is installed correctly in the sample control pinch valve
• Check the flat washer on the fill block is not damaged
• Check sample tube is not leaking, check at first the fill nozzle connection
• Check the sample control pinch valve is fixed on the steel plate. An O-ring is needed between the steel plate and the body of the solenoid.
• Check the fill nozzle itself is not leaking, see WI 203

Other vacuum error symptoms:

• Peristaltic pumps
  • Rinse solution not primed through the system
  • Rinse pump defective
• Sample probe is not washed after aspiration
• Pipettes not dry after washing and drying
• Liquid level sensor not sensing
• Flushing liquids
• Separator error