The pump losing prime whenever it is shut off can occur when there is a leak on the pump absorption line or around the pump shaft seal caging itself can also be responsible for the pump to lose prime. Obstruction or line blockage is another possible cause or the reason why your water pump is losing prime.
Trash that is accumulating and occluding the suction strainer or foot flap is the most renowned cause of this problem. If you turn off the water pump in the winter months, there may be no pressure. For it to work again, the water pump must be primed. This means that the water has to be pumped back into the pump and pushed through. This creates the pressure required to restart pumping.
Pool Pump Priming Problems
This portion covers the pool pump priming problems associated with the motor pump. The problems are explicitly discussed below:
Too low pool water level: If the swimming pool’s water level is below the normal level of the skimmer opening, there is a higher possibility of the pump sucking air to the circulation system via the skimmer. Too much air in the circulation system can result in no prime water pump.
Clogging impeller: If the siphon’s impeller is hampered by trash, water won’t stream out the side spaces and create a vacuum. Without a vacuum, the pump won’t draw water, and it won’t prime. To rectify this issue, detach the impeller and wipe out the trash and debris.
Pump basket has no water: If there is no water in the pump basket, you might need to put water inside the hosepipe or bucket to make the pumping system fully prime.
Leaking pump cover: If there is a crack in the lid or the O-ring, it will allow the air to gain entrance into the system, which will distort pump priming. There may be a need to procure a new cover or O-ring, and you’ll need to apply pool lube on the O-ring when using it. In most cases applying lube on your existing O-ring may do the miracle.
Leaking Threaded fittings: If you have a threaded fitting on the pull side of the siphon, you may have a suctions spill there. You can try the dripping water test, and if you discover that it is leaking, dismantle the fitting and cover the threaded fitting with four to five folds of plumbing tape. You may need to cut the hose’s end and re-stick it to get the strung hosepipe out.
How to prime a pool pump?
Pool priming is a straightforward process, and its importance shouldn’t be underestimated. It is essential to know how to prime your pool yourself. Here are four simple ways to prime your pool.
Position the multiport flap to recirculate: The recirculation sends the water into the filter head and then transfers it back into the pool.
Remove pool plugs: You need to allow water to flow into the pool pump, so you’ll need to detach every plug connected to the skimmer before you switch on any equipment.
Fill the pump: Remove the cover and view the inner side; if it is dry, add some liquid before switching it on. Ensure all the channel plugs are in the right place, and then use a pipe to pre-fill pump housing.
Switch on the pump: Change the cover and switch on the pump. However, it may babble for some time, but eventually, water will the pump housing.