Alfa Laval Gasketed Plate-And-Frame Heat Exchanger TS6

The procedures below concern field gaskets, ring gaskets and end gaskets.

Check how the old gaskets are attached before removing them.

Open the heat exchanger and remove the plate that is to have a new gasket.

Ensure all sealing surfaces are dry, clean and free of foreign matter such as fat, grease or similar.

Check the gasket and remove rubber residual before attaching it.

Attach the gasket to the plate. Slip the gasket tabs under the edge of the plate.

6.3 Manual cleaning of opened units

CAUTION: Never use hydrochloric acid with stainless steel plates. Water of more than 330 ppm Cl may not be used in the preparation of cleaning solutions.

It is very important that aluminium carrying bars and support columns are protected against chemicals.

NOTEP:Be careful not to damage the gasket during manual cleaning.

WARNING: Use proper protective equipment, such as safety boots, safety gloves and eye protection, when using the cleaning agents.

WARNING: Corrosive cleaning liquids. Can cause serious injuries to skin and eyes!

6.3.1 Deposits removable with water and brush

Plates do not need to be removed from the heat exchanger during cleaning.

1. Start cleaning when the heating surface is still wet and the plates are hanging in the frame.

6.1 Cleaning – Non-product side

The cleaning-in-place (CIP) equipment permits cleaning of the heat exchanger without opening it. The purpose of cleaning with CIP is as follows:

• Cleaning of fouling and descaling of lime deposits

• Passivation of cleaned surfaces to reduce susceptibility to corrosion

• Neutralization of cleaning liquids before draining

Follow the instructions of the CIP equipment.

Use proper protective equipment, such as safety boots, safety gloves and eye protection, when using the cleaning agents.

To keep the heat exchanger in good condition, regular maintenance is required. It is recommended to record all maintenance of the heat exchanger.

The plates need to be cleaned on a regular basis. The frequency depends on several factors such as type of media and temperature.

Different methods can be used for cleaning (refer to Cleaning – Non-product side on page 31) or reconditioning can be performed at an Alfa Laval service center.

After a long period of use, it can be required to regasket the heat exchanger. Refer to Regasketing on page 42.

Other maintenance that should be performed regulary:

• Keep the carrying bar and guiding bar clean and grease.

• Keep the tightening bolts cleaned and greased.

• Check that all the tightening bolts are firmly tightened and that the dimension A is correct. Refer to the PHE drawing.;

Warning: This check requires trained personnel with PPE!

Greasing of the tightening bolts

Protection of the plate pack and gaskets

Upload a photo of the heat exchanger after the check

Sign off on the heat exchanger check