I just discovered this forum. I did a search, but did not find an answer to my question and hope you can give me some ideas. It all started when I installed an ez-vac (Kreepy Krawley for Above Ground Pool) and discovered I do not have enough suction. I spoke to my pool guy and he said he thought the 1 HP motor on my Waterway pump was more than sufficient. He suggested I reach in through the pump basket and make sure none of the impellers were clogged or broken. My hand is not long enough. There is a split nut union in between the pump basket and the pump. I tried to remove it to gain access to the impellers, but it is stuck. It will not turn even with a strap wrench. I removed the two stainless steel screws that seem to hold the two parts of the union together and the two sides do not separate. Since all of this is plastic and I have never worked with "unions" I have been reluctant to get too forceful. Here are my questions?
1. Do you agree that the 1HP motor on a Waterway pump should provide enough vacuum to run a vacuum side cleaner?
2. Could the impellers be clogged or broken and the pump still function enough to run water through the filter, but not enough to run the cleaner?
3. What is the best way to check the impellers?
4. How do I remove the stuck union?
I will sure appreciate any and all suggestions and insights.