A brewery changed pre-bottling filters every 6 weeks. Now – once every six months
The beer bottling line stopped to change final filter cartridges more often than planned. The cartridges were cheap, but every stop meant lost time and volume.
Here are typical situations from the production sites we work with. No made-up stories – only what enterprises really face and how it is solved with Donaldson filtration.
Company names are not disclosed under a confidentiality agreement. All situations are based on real experience of using Donaldson Ultrafilter products.
The plant produced juices and nectars. Twice in six months the lab recorded the appearance of mold in the finished product. They changed raw materials and checked the bottling line – but could not find the cause.
The juice storage tanks had no sterile venting. Every time they emptied, outside air entered through an unprotected breather valve.
A sterile Donaldson vent filter was installed on each tank. Air goes in and out – bacteria and mold spores are trapped. 100% sterility with every cycle.
Final membrane filtration of the juice before bottling was added. Cold sterilization – no pasteurization, taste and aroma fully preserved.
The beer bottling line stopped to change final filter cartridges more often than planned. The cartridges were cheap, but every stop meant lost time and volume.
Three weeks before the audit it turned out that the sterile air filters above the maturation tanks were generics without certificates. The inspector could have demanded particle migration test protocols.
A drinking water plant replaced expensive RO membranes four times more often than their rated life. One replacement cost tens of times more than a pre-filter.
The powder and liquid coating line produced periodic defects. They checked the paint, temperature, operators. The source – air from a compressor with silicone seals in standard filters.
A small plant bottled table wine. 6–8 weeks after bottling, some bottles started refermenting. The problem – insufficient biological stabilization before bottling.
The plant repeatedly found metal particles in the pasteurizer. The source – an old corroded steam network. With direct-contact culinary steam, this posed a direct safety risk.
A compressor station without a dryer. Condensate in the pipeline – a chronic problem. The assembly line valves and drives failed after 8–12 months instead of the rated 3–5 years.
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