Assembly and operating instructions - Duodos 15 Air-driven

Maintenance of the double diaphragm pumpCause:Air line of too small nominal widthAir distribution system of thedouble diaphragm pumpRigid pipe connections at thepumpExhaust air silencer blockedPumped medium in the exhaustair silencerBall valve blockedBall valve or valve seat worn ordistortedSuction line blockedDischarge line blockedPump chamber blockedMeasure:Observe the recommendations for dimensioning of the air inlet line inthe operating instructions of the double diaphragm pumpDismantle and examine the air valve, pilot valve and control pinsUse flexible connections and a pulsation damperRemove the silencer. Then clean or de-ice and refit.Dismantle pump chambers and determine whether a diaphragm isbroken or a diaphragm flange is looseDismantle the liquid end of the double diaphragm pump and clear theblockageCheck the ball valves and valve seats for wear and correct seatingReplace as necessaryClear blockage or check and clean suction lineCheck for blockage. Valves in the discharge line may be closedDismantle the liquid end and inspect the diaphragm chambers of thedouble diaphragm pump20