How to fix a flow diversion valve fault on a Tetra Pak A3 / Flex HTST pasteurizer
FDV fault diverts product to drain or stops the line. Confirm the valve position sensor and air supply before investigating the valve body.
~45 min7 steps
How to diagnose a holding tube temperature drop on a Tetra Pak A3 / Flex HTST pasteurizer
A holding tube temperature drop triggers the FDV and stops product release. Check flow rate first, then heater output and temperature sensor accuracy.
~45 min7 steps
How to fix plate heat exchanger fouling on a Tetra Pak A3 / Flex HTST pasteurizer
Fouled heat exchanger plates reduce heat transfer and can prevent the pasteurizer from reaching the required temperature. Verify CIP effectiveness and plan a manual plate clean if needed.
~60 min7 steps