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Once a year:
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The sacrificial anode should be inspected and renewed if it is much corroded. The hot-
water tank can corrode if the anode is left unchanged. (No. 24)
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The intake should be inspected and any uncleanness should be removed.
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The evaporator should be inspected and cleaned.
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It should be checked that the condensate has free passage through the water seal and the
condensation drain.
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The safety switch for the hot water tank should be controlled. (See under Accesspries).
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It is recommended to take out a subscription for service.