Installation Power Take-Off Shield Universal Joint; Connection Suction And Delivery Circuits - DAL DEGAN DL218 Manual De Uso

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INSTALLATION POWER TAKE-Off ShIELD UNIvERSAL JOINT

The power take-off shield that will be inserted on the splined shaft of the pump is conditioned by two factors:
1) An overpressure between the power take-off shield of the pump and that of the universal joint (Ref A) of at least 50
mm must be guaranteed.
2) It is essential to know the characteristics of the type of universal joint used.

cONNEcTION SUcTION AND DELIvERY cIRcUITS

• The suction hose must be installed in such a way as to prevent air pockets from forming. Make sure that the hose
is routed over the shortest possible distance. The diameter of the hose must be the same as that of the pipe fitting,
hose must be fitted on down to the elbow and fastened with good quality clamps.
• Air drawn in by the pump could cause faults and early failures of the diaphragms.
• The hose must be able to bend without throttling the circuit. The ideai hose is the type with a steel coil, which is
flexible while being light and able to maintain its shape.
• All the threaded connections must be assembled with PTFE, specific adhesive or equivalent, so as to ensure a perfect
seal.
• To avoid excessive pressure in the manifold, make sure that the delivery hoses are adequately sized. In any case, they
must be no smaller than the diameter of the pipe fitting supplied with the pump.
• Only use components (hoses, pipe fittings, clamps, etc.) whose minimum characteristics are equal to the maximum
pressure of the pump.
diaphrams pUmps