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Welcome to Alfa Laval Welded Heat Exchangers Help Center
What should be done if chemical cleaning is not possible?
If chemical cleaning is not possible, remove the cover(s) and clean the unit manually by high-pressure hydro blasting. During cleaning, keep the unit in the horizontal position. Hot water jet and high-pressure steam can also be effective.
See the user manual alfa-laval-spiral-instruction-manual-en.pdf for more details.