837 Maintainability

Provisions for gaining access to the internals may be worth the additional cost so that surfaces may be easily cleaned, or tubes replaced when corroded. A shell and tube heat exchanger with flanged and bolted end caps which are easily removed for maintenance is shown in Figure 8.17. Economizers are available with removable panels and multiple one-piece finned, serpentine tube elements, which are connected to the headers with standard compression fittings. The tubes can be removed and replaced on site, in a matter of minutes, using only a crescent wrench.

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