Restarting your AODD pump after a long period of shut down

AODD: Air Operated Double Diaphragm Pump

After a long period of being shut down, it is critical that proper consideration is given to pumps and pumping equipment to ensure they continue to provide reliable fluid transfer. The following steps will ensure a problem free restart of your air operated diaphragm pumps.

• Blow out air lines – Condensation can form in airlines, causing rust and debris to be blown into the air valve and pilot valve.

• Change inline filter element – If not changed recently, filter elements can become dried and clogged robbing the pump of required PSI and SCFM.

• Flush the pump – Solids can settle in the chambers potentially causing damage during restart to shafts and diaphragms. If flushing is not an option, start the pump at low pressure to agitate fluid and solids within chambers. Do not flush with pressurized water or steam.

• Check your stock – In the case of failure, it is critical to have the necessary parts and kits on hand to reduce process downtime.

Don’t get caught with damaged diaphragms or broken shafts.

Sandpipers Externally Serviceable Air Distribution System (ESADS+Plus) allows for quick and easy access to the pilot and spool valves without removing the pump from service.

Rebuild? Repair? Refresh? Sandpiper AODD pumps have a range of kits available for the Air End ( Main Air Valve Assembly, Pilot Assembly, Gaskets, and O-rings) or the Wet End (Diaphragms, seats, balls/flaps, and O-rings), along with small kits for soft components (such as Main Air Valve Gaskets, Pilot valve O-rings and Gaskets, and Shaft Seals)

We hope you find this information useful. If you have any comments or questions, please contact us