BREAK-IN PERIOD A break-in period of 10 hours is required to achieve maximum pumping capacity. PERIODIC MAINTENANCE (VERY IMPORTANT) It is imperative that you keep the strainer clean and free of debris. We recommend that you remove any debris that may accumulate in and around the blue strainer base. FREEZING / IMPELLER JAMMING The Rule computerized sump pumpis equipped with a protective circuit that prevents damage to the pump in the event that it becomes embedded in ice or the impeller becomes jammed in debris. Should the impeller jam due to ice, no action is necessary. The pump will resume its normal operation when the ice thaws. The pump will continue to check for water every few minutes while frozen and automatically shut itself off after each check. To prevent unnecessary wear, it is recommended to disconnect the pump if it will be frozen for an extended period of time. Should the impeller jam due to debris, the debris should be removed as soon as possible to allow the pump to return to its normal automatic operation.