M-Series PHE

External leaks from between plates are almost always a gasket issue: either the frame bolts backed off or the gaskets aged out. Re-torque first, then replace gaskets if leaking continues.

Rising pressure drop across the plate pack means fouling, partial blockage, or too many plates for the flow rate. Measure the delta P, run CIP, and verify the plate count against design.

Internal or external leaks on a plate pack usually trace to corrosion pits or cracked plates. Isolate the unit, de-plate, perform a dye or pressure test on suspect plates, and replace the damaged ones.

Vibration in a plate heat exchanger usually comes from flow velocity exceeding design limits or from loose pipework supports transmitting external vibration into the frame.

Reduced heat transfer almost always means fouling or scale on the plates. Run a CIP cleaning cycle, inspect the plates visually, and re-torque to the stamped dimension.