Alfa Laval Compabloc Plate Heat Exchanger CPH20

Reassemble heat exchanger with original components

Ensure the following are fully tightened

Enter the design pressure indicated on the nameplate

Is the maximum allowed differential pressure indicated on the nameplate?

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

Pressurize the second circuit to secure the differential pressure

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

Ensure the Compabloc is empty before opening.

Collect remaining fluid to prevent environmental pollution.

Ensure both circuits are not pressurized and drains are open.

Can chemicals be used for cleaning?

If chemicals cannot be used, remove the following to access heat transfer surfaces if necessary.

Follow instructions in chapter 4.3 for opening the Compabloc.

Is it necessary to remove the baffle cage?

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

Use welded or screwed lifting lugs to lift panels safely

Clean gasket seating surface thoroughly without scratching