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BA EN 12.2019 Modification 02 from 01.12.19. Copies are not subject to the change service.
9.6.4 Installation of the heat exchanger plates
Risk of injury
There is a risk of injury while the heat exchanger plates are being installed.
Be mindful of the following points:
➢ Always wear suitable protective equipment (PPE).
Perform the following work steps:
1. Clean the support rod, the frame head and the frame cover.
2. Clean and grease the tensioning screws. Replace them if necessary.
3. The gaskets must fit properly into the heat transfer plates [► chapter 9.4.1]. The surfaces of the plates
and gaskets and the sealing surfaces of the connections on the inner sides of the frame head and frame
cover must be free of dirt accumulation.
4. The heat exchanger plates are installed in the reverse order of their removal
[► chapter 9.6.1].
5. Be mindful of the sequence of the heat exchanger plates as per the parts list [► chapter 11.1]!
9.7 Cleaning
Depending on the degree of contamination and system-technical options, the plate heat exchanger can be
cleaned in a variety of ways.
A basic distinction is made between CIP cleaning (in which the apparatus is not opened) and mechanical
cleaning (which makes it necessary to open the apparatus).
Risk of injury due to abrasive cleaning agents
The use of abrasive cleaning agents gives rise to a risk of poisoning, chemical burns and burning. Ensure the
following:
➢ That the PHE is only reactivated after all the leakages have been repaired.
➢ That the cleaning agent is used properly and the work steps are performed correctly.
➢ That suitable protective equipment is worn during cleaning.
➢ That the cleaning agent has been completely removed from the heat exchanger plates.
Warning against damages due to incorrect cleaning tools.
Hard cleaning tools can damage the surface of the heat exchanger plates and lead to corrosion. Damaged heat
exchanger plates and gaskets can lead to leakages.
➢ Never use hard cleaning tools (e.g. metal brushes, steel wool or sandpaper).
➢ Be very careful while cleaning the system, so that you will not inflict any damage.
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