AODD Pump Troubleshooting Guide
Troubleshooting should start with isolation and observation, then move from the air supply and piping to the pump. Stop and depressurize equipment before opening it.
Pump does not cycle
Confirm that the air isolation valve is open, usable pressure and flow reach the pump, the exhaust is not blocked and the discharge line is not closed. Check for a stalled air valve only after the system is safely isolated.
Flow is lower than expected
Compare the actual discharge pressure, suction lift, line restriction, fluid viscosity and air supply with the duty. Catalogue maximum flow is not the expected flow at every pressure or installation condition.
Pump cycles but does not transfer
Check liquid level, suction leaks, collapsed hose, blocked strainer, valve-ball seating, solids and whether dry suction conditions exceed the selected model. Verify manifold orientation after maintenance.
Leakage, noise or icing
Stop the pump for visible liquid or air leakage and inspect the correct service procedure. Noise can indicate excessive cycling, cavitation-like suction restriction or loose installation. Icing is influenced by compressed-air moisture, pressure drop, cycle rate and ambient conditions.
Source basis and limits
This guide is based on general AODD operating principles and the DELEEMA selection workflow. Model-specific performance, materials, dimensions and limits must be checked against the applicable model data and the configuration confirmed in writing.
Last reviewed: 2026-11-05 · DELEEMA technical team
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