How to Install a Plate Heat Exchanger

Place the unit on a level concrete pad or steel frame. Leave clearance equal to at least the length of the plate pack on the moveable-cover side so plates can be removed for inspection. Allow access to all four sides for piping and maintenance.

Match nozzle orientation to the original drawing. Support all piping independently of the unit — never use the heat exchanger as a pipe support. Install flexible connectors or expansion loops where thermal movement is significant.

Install isolation valves on every nozzle so the unit can be removed for service without draining the system. For continuous-duty installations, a parallel bypass line allows production to continue during maintenance.

Provide vent valves at the highest point of each side and drain valves at the lowest. Air pockets reduce heat transfer and can cause hot-spot damage to gaskets. Vent both sides during start-up.

Verify the plate-pack tightening dimension against the nameplate value before pressurising — never tighter than the maximum dimension. Pressure-test each side to 1.3× design pressure for ten minutes. Start the cold side first, then introduce the hot side gradually to avoid thermal shock.

Record inlet and outlet temperatures and pressure drops daily for the first week. Establish the clean-baseline pressure drop on each side — this is the reference used later to trigger CIP cleaning.