Accu-Therm Replacement Plates

Compare it with the plates either side of it in the pack. Plates alternate, so both neighbors will be the opposite hand and the plates two positions away will match the one you pulled. Mark its position counted from the fixed head before it leaves the frame, so the new assembly goes back into the same slot facing the same way.

Only where the pack was rated with mixed patterns to begin with. Corrugation geometry sets each channel's pressure drop and heat transfer, so one plate of a different pattern changes how flow divides through the pack and can leave the unit short of its rated duty. Replace by the plate model code shown in the table unless a new thermal rating says otherwise.

Start with any markings pressed or etched in to the plate itself, which many plates carry near a port or along the edge. Failing that, the overall plate height and width, the port diameter and a clear photograph of the corrugation narrow it to a short list. Send those along with the plate count and we can match the assembly from the table.

Only when chlorides are what damaged the old plates. Titanium resists chloride pitting and stress cracking where 316 does not, but it costs considerably more and gains nothing on clean water or most food duty. Send a water or process analysis together with a photograph of the failed plate, and we will tell you whether a material change is justified or 316 was never the problem.

It can be done, but the new gasket will sit among old ones that have taken a compression set, and the pack seals unevenly as a result. A single assembly swap is reasonable when the pack was regasketed recently. On gaskets that have been in service for years, plan the plate replacement and a full regasket as one job, since opening the pack again a few months later costs more.