Grundfos mq3-45 keeps cycling on and off


T

towinger

-------------------------------------


My Grundfos mq3-45 keeps cycling on and off every 1 minute now. It used to
stay off for 10 minutes when it was new. It\'s only 3 or 4 months old now.
It pumps about 75\' over level ground through 3/4\" pipe. Is it common for
this pump to lose it\'s pressure so fast?
 
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