Franklin Electric
Loss of Prime / Suction Air Leak
Pump runs but there is no water flow or only a weak trickle from pool returns
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Possible Causes
Cracked or dry pump lid O-ring on Franklin Electric pump, Loose suction union fitting, Low pool water level allowing air into skimmer, Air leak at pump drain plugs
How to Fix / Troubleshooting
Safety first: Turn off power before opening the pump or adjusting plumbing.
- Check water level: Ensure pool water is at least halfway up the skimmer opening.
- Inspect and lubricate lid O-ring: Remove the Franklin Electric pump lid, clean the O-ring and groove, apply a silicone-based pool lube, and reinstall. Replace the O-ring if cracked or flattened.
- Tighten unions and plugs: Hand-tighten suction-side unions and pump drain plugs. Do not overtighten to the point of cracking.
- Prime the pump: Fill the pump strainer housing with water, replace the lid, open all valves, and restart the pump. Watch for a solid stream of water in the pump basket.
- Check for persistent bubbles: If air continues to enter, use soapy water on suction joints while the pump runs to locate leaks, then repair or replace fittings.
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Repair Difficulty
Easy
2/5
Required Part
Pump lid O-ring
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