I have the original pump & agree with the regular cleaning advice in previous reviews. On another site I saw this tip which has been successful in removing calcium etc from the pump: 1) Put the pump in a bowl of pure white vinegar, full strength.
2) Clean it with brushes, etc as described by other reviewers.
3) Plug it in while the pump is still submerged in the vinegar.
When I did this, the pump started again, as good as new.
Note: If it's not running, then soak it 6 -24 hours.
I have cleaned the pump every 4 - 6 months for the past three years, (since the first interruption) and it's running fine today.
My cats love this fountain!, 6/8/14
I've owned the Drinkwell Platinum fountain for three years. I clean the fountain weekly and replace the charcoal filters every 2-4 weeks and have never experienced a problem. The cats love the constant stream of fresh, filtered water and I believe are well-hydrated because the stream of water attracts them. I love it because it provides my five cats with a week's supply of fresh water when I travel for business. Today, after cleaning the fountain I noticed the pump didn't immediately come back on when plugged in. I viewed a YouTube video to see how to dismantle and clean it. After a quick three minute process, the pump was cleaned, reassembled and started recirculating the water immediately. If the pump ever does quit permanently, I wouldn't hesitate to purchase another. Thank you for a great product!
Outstanding! , 5/7/14
We have had our platinum drinkwell for over two years, we had the smaller drinkwell (not sure of the name) previous to this one. I believe the pump went out after about 8 months with the smaller model. We decided since our kitties love the fountain so much we would upgrade. Of course, they were devastated (I am not even exaggerating) when their fountain stopped working. The new pump was in my hands in two days. Kitties are happy and so am I!