Aodd Pump Troubleshorting

AODD Pump Fails to Operate:

1. Air Inlet Size Too Small: Replace with a larger airline to ensure sufficient air supply.
2. Icing in the Pump Muffler: Install a heater in the air supply line, decrease pump air pressure, lower pump speed, or install an air line filter to prevent icing.
3. Leakage on the Pump Surface: Check for worn-out O-rings and replace them.
4. Ball Valve Wedged into Seat due to Excessive Pressure: Install a pressure relief valve to prevent excessive pressure buildup.
5. Dispensing Valve is Clogged: Reduce pressure and clear the valves.
6. Blocked Air Connection: Ensure air connections are not blocked.
7. Diaphragm Breakdown: Replace the diaphragm.
8. Dirt in the Pump Chamber: Clean dirt from the chambers.

AODD Pump Cycles but Does Not Prime:

1. Clogged Inlet or Outlet: Clean the inlet and outlet.
2. Pump Speed Too High Leading to Cavitation Before Priming: Reduce the inlet air pressure.
3. Lost Inlet Fittings or Manifolds: Tighten fittings and manifolds.
4. Check Valves Balls Severely Worn Out: Replace the worn-out check valve balls.
5. Closed or Partially Closed Valves: Ensure that suction and discharge valves are fully open.

Premature Diaphragm Failure:

1. Excessive Pressure on the Suction Side: Raise the pump or position it on top of the tank to reduce pressure.
2. Cavitation: Enlarge pipe diameter on the suction side or move the pump closer to the product to prevent cavitation.
3. Wrong Selection of Materials: Ensure that the materials are compatible with the pumped fluid.
4. Long Periods of Dry Running: Avoid prolonged dry running to extend diaphragm life.
5. Incorrect Diaphragm Plates or Plates Installed Backward: Consult the manufacturer’s guide for correct diaphragm plate installation.
6. Startup with Too High Pressure on the Suction Side: Start the pump at the recommended pressure level specified by the AODD pump manufacturer.

Liquid Leaking:

1. Loose Side Housing: Tighten the tie rods and screws.
2. Damaged O-rings on Manifolds: Check and replace damaged O-rings.
3. Fault in the Pipe Network: Inspect and repair any faults in the pipe network.
4. Ruptured Diaphragm: Replace the diaphragm and perform regular maintenance to prevent future ruptures.

Bad Flow or Pressure:

1. Pressure Falls in Air Supply or Pressure Losses on Suction Side Air Supply: Address issues with air supply to maintain consistent pressure.
2. Air Valve Leaking: Repair or replace the air valve if it is leaking.
3. Worn-out Valve Balls or Valve Seats: Inspect, repair, or replace the valves.
4. Air in the Liquid: Ensure that there is no air entrapped in the pumped liquid.
5. Icing on the Muffler: Prevent icing on the muffler to maintain proper pump operation.

Unequal Cycling:

1. Excessive Suction Lift: Fill the chambers with liquid to prime the pump properly.
2. Pumped Fluid in the Exhaust Air Muffler: Check for any liquid in the exhaust air muffler.
3. Air Leakage on the Suction Side: Address and eliminate air leaks on the suction side.
4. Obstructed Check Valves: Dislodge any obstructions in the check valve pocket.
5. Entrained Air or Vapor Lock in the Chamber: Use chamber vent plugs to purge chambers and remove air or vapor locks.