I recently replaced my ten year old original sand filter with a Doheny's 150 sq ft cartridge filter. My pools is in a screened room and really small, 2300 gallons, so as infrequent as they were, the backwash process took a lot of water. I did some research here and purchased a unit that was overkill for my pool, meaning there would be a surplus of water flow, and the filter would not need to be cleaned often. The install went ok, but the cartridge filter leaked. After receiving a new unit everything appeared to be going ok. I turn the pump on in the morning, I loosened the air escape bolt, and after the air turned to water close it.
First issue. One day I loosened the nut too much and the nut came blasting out. I was able to find it, but not the washer. I found a different washer that fit, but because it was round and not flat it would not seal. I decided it was dangerous to have to loosen the plastic bold, so I installed a valve instead. This resolved the first issue.
Second issue. I was curious, and at the end of use for the day I cracked the valve open before shutting the pump off. There was a lot of air. A lot... How is air getting inside the filter, and at what point is it dangerous? I already rebuilt the skimmer, return valve. I still don't trust the self greasing knob on it. But it's not supposed to leak. argh...
Third issue. This may be my fault. In an effort avoid two 90 degree elbows from the pump to the filter I elevated the filter using a couple concrete blocks. The filter is designed to accept two O-rings on the main housing. They include only one in the product. It still leaked from the main housing, so I snached the O-ring from the defective first filter and installed it too. The result was two washers and no more leaking. The pressure is 14psi. The pressure was 20psi on the sand filter arrangement. Why does the filter leak with only one washer. Did they design it with the understanding that there would be three 90 degree elbows from the pump to the filter?
The pump is not staying primed. I also think I have a very slow leak in the pool... somewhere... smdh
First issue. One day I loosened the nut too much and the nut came blasting out. I was able to find it, but not the washer. I found a different washer that fit, but because it was round and not flat it would not seal. I decided it was dangerous to have to loosen the plastic bold, so I installed a valve instead. This resolved the first issue.
Second issue. I was curious, and at the end of use for the day I cracked the valve open before shutting the pump off. There was a lot of air. A lot... How is air getting inside the filter, and at what point is it dangerous? I already rebuilt the skimmer, return valve. I still don't trust the self greasing knob on it. But it's not supposed to leak. argh...
Third issue. This may be my fault. In an effort avoid two 90 degree elbows from the pump to the filter I elevated the filter using a couple concrete blocks. The filter is designed to accept two O-rings on the main housing. They include only one in the product. It still leaked from the main housing, so I snached the O-ring from the defective first filter and installed it too. The result was two washers and no more leaking. The pressure is 14psi. The pressure was 20psi on the sand filter arrangement. Why does the filter leak with only one washer. Did they design it with the understanding that there would be three 90 degree elbows from the pump to the filter?
The pump is not staying primed. I also think I have a very slow leak in the pool... somewhere... smdh
