I just installed a new Hayward SP2807X10 Maxflo Single Speed 1HP Pump to replace a similar failed pump. It is factory strapped for 220VAC and power is wired for 220VAC. It seems to run normal for a second or two till primed and then starts to make a clicking noise while the speed seems to change slightly with the clicks. The clicks occur approximately once per seconds
Please advise on possible cause.