Even if you could run it thru the MS3, it might be safer to run those amps thru a separate relay. Just use the MS3 for turning a separate relay on and off. Run the higher amps thru the relay contacts. The alternative is to potentially damage the MS3 with much higher costs to repair.
In previous response, I was thinking only of on and off control, two equally matched pumps in parallel. PMW would not be the way to go. I should have been more clear on my thoughts.
Isnt there a way to program a simple on and off signal from the MS system that has some deadband around the trigger point, so the relay doesn't chatter? Once you turn on the second pump you should have double the capacity.
Last edited by sedd
on Fri Mar 30, 2012 9:09 pm, edited 1 time in total.