Plate Heat Exchangers Service|ARD

Plate Heat Exchanger Servicing
ARD offers a complete plate heat exchanger refurbishment program. Our engineers are available to attend site to open heat exchangers and remove the existing plates and gaskets. We would recommended using our rotating plate pack solution with this service. You can also return the complete plate heat exchanger, to our works, for refurbishment. This service will also include a full hydraulic pressure test, complete with test certificate, before the heat exchanger is returned to site.

Stage 1: Pre-Clean & Initial Inspection

When the plates and gaskets arrive back at our works they are checked in against your specifications. After a visual inspection, the old gaskets are removed and the heat transfer plates are pre-cleaned using a pressure washer. 


Stage 2: Chemical Clean

The heat transfer plates are then dipped in a series of chemical baths to remove deposits and scale. They are then completely rinsed with clean water and visually inspected for a second time. 


Stage 3: Dye Penetrant Testing

The cleaned plates are sprayed with a fluorescent dye and inspected with a an ultra violet lamp, for pit corrosion, pin holes and cracks. To help reduce servicing costs, we first select a random percentage for testing. This allows us to efficiently identify any failure trends before the entire plate pack is tested. 

Stage 4: Regasketing

The heat transfer plates are regasketed with new gaskets and assembled in plate pack order ready for installation in the heat exchanger frame. Should the Heat transfer plates require glued gaskets. During the regasketing process the gaskets are tapped to the plates and stacked to minimize gasket movement, ready for the next stage. 


Stage 5: Oven Cure
Heat transfer plates with glued gaskets are placed inside a temperature controlled oven, for a specific time period. The curing is an important stage as it eliminates gasket movement during final assembly. 


Stage 6: Final Assembly

The heat transfer plates will be installed in the plate heat exchanger frame. This work is completed by trained service engineers, as each plate heat exchanger has a specific heat transfer plate arrangement. A full hydraulic pressure test will be carried out on all plate heat exchangers, which have been serviced at our works.