We have a Surge Sp-11 pump. It has worked good for along time. We went out to milk the cow last night and everything started up and sounded good......but it was blowing instead of sucking???? Can anyone help??
have you checked the rotation of the motor. I have a sp-11 and have rigged it so i can reverse the motor so i can purge the vac lines, with clock wise vac, ccw blow. hope this helps. lonefirdairy@pinetel.com
