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  • The piping and filter systems on pools and spas can trap and hold large bubbles of air until they build up pressure that can separate filters, strainers, and separation tanks. The following can help you avoid this situation.

  • Learn how to safely bleed the air out of your circulation system by reading your owner's manuals carefully.

  • Never try to adjust or service your pool or spa filter unless you have read the owner's manual and understand how to release all pressure from the system. Make sure to shut off power and release the pressure first!

  • When starting up the system after a period of non-use, re-read the start-up instructions in the owner's manuals first.

  • Never connect your pool or spa filter system to a household water system. The pool equipment is designed to run at much lower pressures, and may split or burst if subjected to household water system pressure.

  • Make sure shut-off valves downstream of the filter remain open during system operation.

  • Make sure the pool skimmer is not sucking air ("vortexing") as well as water. This can pull a large amount of air into the filter system, and it can be corrected by raising the pool water level, reducing the flow of water through the skimmer, or both.

  • Before using a vacuum or suction-side cleaner, submerge the hose completely and let it fill with water before connecting it to the pump suction outlet.

Trapped Air