Knowing how to remove air from the pool pump is critical for the filtration system to work properly. Air in the circuit causes loss of flow, noise, overheating and overheating, and is one of the most frequent causes of breakdowns in domestic pumps.
As professionals in maintenance and sale of pool pumps, we explain how to remove air from the pump, how to bleed it properly, why air appears and when this problem indicates that the pump should be replaced with a new one.
The clearest signs of air in the pool pump are:
If you identify any of these symptoms, you should purge the pump.
The professional procedure for removing air from the pool pump is as follows:
Turn off the pump. Never handle the prefilter cover while the pump is running.
2. Open the prefilter cover. To do this, loosen the cap slowly to release pressure. Then, check that the o-ring is clean and in good condition.
3. Fill the prefilter with water. Use a hose or bucket to fill it completely. This step is key to recovering priming.
4. Close the lid properly. Once closed, clean the o-ring seat. Then lubricate it with neutral petroleum jelly and, finally, tighten the cap again without forcing, ensuring tightness.
5. Open suction valves. Make sure the skimmer and/or bottom are fully open, avoiding partially closed valves.
6. Start the pump. When you do, look at the prefilter. If the air comes out correctly, it will be completely filled in a few seconds.
7. Additional purge (if sand filter is present). Slightly open the filter bleeder until air-free water flows out. Then, close when the jet is continuous.
If air reappears after purging, there is probably an air intake. To check, check:
Our professional advice is to dry the outside of the pump and observe where bubbles or moisture appear at start-up.
These errors lead to recurrent debranching.
Purging solves the problem if it is punctual. But it is not enough when the pump is daily de-primed, there are constant bubbles, the prefilter cover does not seal, the body is deformed, the motor seal is damaged or the pump is old and loses performance.
In these cases, air is a symptom, not the main cause. You may choose to repair it if the pump is relatively new, the problem is the o-ring or a joint, or, if after purging, the system stabilizes.
If your pump is 8 years old or older, continuously breaks down, has internal leaks or wear, overheats or stalls and produces high consumption, it is time to replace it to avoid repeated breakdowns and improve performance.
The pump models we recommend in this case are from the ESPA pump range. Depending on your needs, suitable models are Silen I and Nox for small pools, Silen S or Silen S2 for medium or large pools and NoxSalt for salt chlorination or high salinity.
Turn off the pump, open the prefilter, fill it completely with water, check the o-ring, close it tightly and start with open valves. Purge the filter if necessary.
Because there is air intake in aspiration. It may be due to a defective o-ring, improperly closed cap, loose fitting or low water level.
Yes, for a few seconds. If they continue, it indicates persistent air and should be checked for leaks.
No. The pump should never run without water; you could damage it.
It loses performance, heats up, breaks down and can damage the mechanical seal and the motor.
Yes. Over the years, the o-rings and the body lose their tightness and the priming becomes unstable.
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