Pump runs but loses prime and fills with air after a few minutes; water flow becomes intermittent.

Safety First: Turn OFF the pump before opening the lid or adjusting valves.

• Inspect lid O-ring: Remove the pump lid, clean the groove and sealing surface, and examine the O-ring for cracks or flattening. Replace and lubricate with silicone if worn.
• Tighten suction unions: Hand-tighten unions on the suction side of the Rheem pump. Do not overtighten to the point of cracking.
• Check water level: Maintain pool water at least halfway up the skimmer opening to prevent air from being drawn in.
• Test for leaks: With the pump running, apply soapy water around suspected joints; bubbles being sucked in indicate a leak. Reseal or replace fittings as needed.
• Reprime the pump: Fill the pump housing with water, reinstall the lid, open all valves, and restart while monitoring for stable, bubble-free operation.