Pump ran with valves closed

Apr 18, 2014
21
United States
Hi, when I add chlorine to the tank, I have to close the valve between the pump and filter and the one between the chlorine tank and return. I forgot to open them back up an the pump ran for a day and a half like that. The pump didn't dry out or even seem to overheat. Should I worry? Everything seems to be fine but just wanted to be sure, thanks.
 
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