Level 4 maintenance

The purpose of level 4 maintenance is to carry out the daily / weekly maintenance and replace the pump tubing, bacterial filters and the Fill nozzle O-ring. After replacing those items, the instrument needs a Fill and Clean sequence to clean the pipettes. Over a period protein builds up in the Westergren pipettes and needs to be deproteinized using a strong cleaning agent.

Detailed instructions of this procedure can be found in the Work Instruction WI-1215 Level 4 maintenance.