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lwco cleaning

tom_11 Member Posts: 58
My service tech serviced my Weil McLain 368st boiler today,he said that he had to take the lwco apart, to clean the inside wall of the lwco. It is a M/M #67 he said it had scale on the wall. It works ok now ,should it be changed, or clean it each year. Thanks tom


  • Replace after 10 years old

    Clean once a year by disassembling the control, and if it is still serviceable, put back in service after cleaning.

    That's M&M's instructions on them, shortened for the Wall. Read the whole instruction sheet, they have it on line.

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