6 Maintenance
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.
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.
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!
CIP equipment
Contact an Alfa Laval sales representative for the size of CIP equipment.
200000547-4-EN-GB 31
EN
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