Low pressure in your filter is much less dangerous than high pressure but it means your filter isn t doing its job.
Low water pressure pool filter.
Filter valve allowing water to bypass filter.
A dirty pool filter wins for most popular water flow issue on a heater service call.
The skimmer filter is like a basket that catches leaves grass and other small things that float on the surface of your pool.
Unlike high pressure there is no normal range for low pressure.
Low pressure is a pool term that is often used to describe weak jets as well as a low psi reading on the filter s pressure gauge.
Pool cleaner not moving around the pool well or may have stopped altogether.
High psi readings will also cause low water pressure.
Eyeball fittings not in place at pool returns.
Have owner get a filter replacement cleaning.
Low pressure is caused by an obstruction or other problem that is keeping water from reaching the pump.
If you neglect the skimmer filter and it gets clogged up the pressure in the water pump will drop.
Pool filters and most pool equipment is designed to operate normally up to 30 psi.
That s because after the pump the water is under pressure so any problems would produce high pressure not low.
Also most pool equipment has a maximum pressure rating of 50 psi and the area between 30 and 50 is your safety margin as a pool owner.
If the issue was in fact a clogged filter you should have no water flow problems now.
You should never operate a pool system above 30 psi and anything above this pressure should be regarded as dangerous.
If your pressure gauge is showing a high reading and your pool is showing symptoms of low water flow here are some of the probable causes.
This can be diagnosed by removing the filter and running pump again without filter in.
Low pressure will almost always be caused by a problem at or before the pump.
Clogged filter if water can t get through a clogged filter you will have less water flowing out of the filter.
Reduced water movement in the pool.
Clogged pump basket or skimmer baskets.
Here s a list of common causes of low filter pressure.