Before proceeding with the maintenance the exchangers can be submitted to a cycle of reclamation in order to make inert the waste products contained in the equipment.
Then we proceed to the above-mentioned stages of washing, controlling of the plates and mounting of the gaskets. After the control of the plates, before reassembling the exchanger it may be necessary to operate on some details of the frame in order to restore their functionality.
Closure of the plate pack and verification of the heat exchanger through a hydrostatic test conducted at the design pressure. When the test is concluded, an inspection certificate is issued.