Monitoring the filter resistance or checking the degree of contamination of the filter cartridge. If the preselected maximum differential pressure is reached, the system switches off the feeding pump and informs the operator of the need to replace the filter cartridges.
After replacing the cartridges, the error can be reset, and the process restarted.
Note: A pressure difference monitor is required for each filter housing. If an additional filter is used, additional Differential pressure is required twice (2x).