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Welcome to Alfa Laval Welded Heat Exchangers Help Center
What should be checked before starting up the heat exchanger?
Before starting up, check the tightening torque of the bolts. During shipping or long shut down, the cover seals and/or bolts may release or loosen. To ensure that the covers seal properly, tighten successively on diametrically opposed bolts. The recommended tightening torque is listed in section 4 'maintenance,' of chapter 7 'replacing the covers' in this product's instruction guide.
See the user manual alfa-laval-spiral-instruction-manual-en.pdf for more details.