When tightening the plate type heat exchangers shown in the illustration, care must be taken to __________. MO-0110

Correct Answer: Option A — use a specific opposing pattern while measuring the distance to which the plates have been compressed

Plate heat exchangers require uniform compression to ensure gasket integrity and prevent leakage. Using an opposing pattern while measuring plate pack thickness ensures even distribution of force across the gaskets. This technical requirement prevents warping or uneven sealing, which could lead to catastrophic failure of the heat exchanger unit.