Alfa Laval Compabloc Plate Heat Exchanger CPF20

Dismantling Procedure for Panels

Progressively loosen the nuts one girder after the other

Loosen bottom nuts one panel after the other

Do not unscrew stud bolts or nuts for girder assembly

Remove panels starting with the highest weight

Refer to Appendix 1 for panel weights

Use welded or screwed lifting lugs to lift panels safely

Check external elements of the heat exchanger

Inspect all welds for cracks, defects, and corrosion

Check painting for local absence of coating and blistering

Proceed with internal examination?

Estimate condition of internal elements

Ensure all original components are reassembled

Verify the following conditions

Enter the design pressure indicated on the nameplate

Ensure one circuit is empty and the other is full and pressurized at design pressure

Is the maximum allowed differential pressure exceeded during the test?

Pressurize the second circuit to secure the differential pressure

Ensure all four panels are fully tightened

Supervision of Key Process Parameters

Record the temperature of the heat exchanger

Record the pressure drop across the heat exchanger

Is there any contamination of media observed?

If contamination is observed, describe the analysis for possible internal leakage

Is there a variation in pressure drop indicating performance loss?

Is cleaning of the heat exchanger required to remove fouling?

Baffle Dismantling and Reassembly Procedure

Pull out the ladder formed by uprights and baffle plates

Remove triangular PTFE cord gaskets from longitudinal girder lining

Remove the complete baffle cage

Clean the triangular groove of the longitudinal girder lining and remove grease

Install a new triangular PTFE cord gasket if required and press into position

Note that CP120 and Hygienic CP models do not use triangular PTFE cord gasket