Cathodic dip coating bath

The temperature of a KTL coating bath must stay constant because, according to the source, even a few degrees of difference cause enormous costs. A pump therefore constantly circulates the paint through filters and heat exchangers. If these clog, the paint flow through the cooling section is no longer sufficient. In the worst case, the whole bath has to be replaced unplanned, which means a long plant outage.

Clogged filters show up most clearly in a combination of readings, not in filter pressure alone. The Nexeed Industrial Application System from Bosch Connected Industry additionally records the temperature and pressure difference upstream and downstream of the heat exchanger and the opening rate of the three-way valve. If any of these parameters exceeds a critical value, the system notifies the responsible experts according to individually defined rules.

The filter change can be planned when the line is monitored continuously and warnings arrive early. In the Bosch Connected Industry example, maintenance staff or technicians receive a notification when anomalies occur, even remotely. If clogging is on the horizon, they schedule the change for a non-production period such as the weekend, instead of having to react to an outage.

Not necessarily; what matters is bringing the existing parameters together centrally and evaluating them jointly. In the Bosch Connected Industry example, filter pressure, temperature and pressure differences at the heat exchanger and valve opening are displayed live in the Nexeed Industrial Application System. Because the condition of the filter often cannot be measured directly, only this combination gives maintenance a reliable picture.