Totally not related to pools .... and really likely a question for Mark ....
Our washing machine has recently started to overflow the drain. If I run a hose in the drain, it will not quite overflow, but the washing machine must pump out at a higher flow rate and thus, overflow some. I am guessing the drain has developed a partial block and I have as yet been unable to clean it out and the clothes are piling up.
So, question is ... are washing machine pumps similar to pool pumps where I can restrict the output hose to reduce the flow rate without damaging the pump?
This would be a relatively temporary "fix" until I can figure out how to clean out the pipes.