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To ensure that a submersible pump functions correctly, which is the minimum level of fluid allowed?

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To ensure that a submersible pump functions correctly, which is the minimum level of fluid allowed?

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The minimum level of fluid required for a submersible electric pump immersed in that fluid differs, depending on the type of service (A1=continuous service/S3=intermittent service). This is why it is pre-engineered for installation of a cooling casing if required. INSTALLATION WITHOUT THE COOLING CASING: S1 operation: the motor must be completely immersed in the pumped fluid. S3 operation: the fluid can reach the base of the motor. However, the electric pump can only operate in these conditions for a certain period, alternated by the period at a standstill required by the motor. OPERATION WITH THE COOLING CASING: The motor can operate completely uncovered by the fluid in the S1 service mode.

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