Cw Skimmer Crack [exclusive] Jun 2026

Ambient temperature in outdoor pools may swing from sub‑zero night lows to >35 °C midday highs. The housing’s coefficient of thermal expansion (CTE) differs from that of the metal mounting brackets and the motor shaft. When the temperature changes, differential expansion creates shear stresses at the interfaces. Repeated expansion–contraction cycles generate micro‑cracks that coalesce.

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