Robot Cleaner Gets Stuck on Main Drains


May 21, 2018
Hey guys, I have a Pentair robot cleaner (Kreepy Krauly Prowler 920) that came with my new pool. It works great, except that it gets stuck on the main drains in the deep end. A little tug on the line will do the trick, but I cant let it work overnight, unsupervised. My builder even sent me new covers, but it still gets stuck. Any suggestions?


TFP Expert
Platinum Supporter
May 23, 2015
Tucson, AZ
Pool Size
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
There are drain cover clips and “ramps” that you can put on or around the covers but it’s hit or miss on their effectiveness. Unfortunately the safe design of drain covers (to comply with Federal regulations) doesn’t seem to be compatible with most robots designed nowadays whether they are pump driven cleaners or electrically driving robots.


LifeTime Supporter
Jul 20, 2009
El Paso, TX
I purchased this from Amazon for about $60 (white, $51 for blue color): Zodiac 5830 Blue Unibridge Main Drain Cover Replacement. It is not 100% effective because my Oasis Z5 kicks the cover off the main drain...on the average one time over three months. I found it acceptable for my use.
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