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Running 2 pumps in parallel

Good Morning Everyone,

I am a bit new to WaterCAD. I am trying to model 2 lift station pumps with different curves running parallel and joining together before tie in into a Force main. The model is attached.

I am not sure how much data to input in the model. I have 2 reservoirs and 2 pumps. The elevations in the reservoir and the pump are the same which is the bottom of the lift station! There are also junctions with elevations. In the pump definitions, I added the pump curves that I got from the manufacturer. The pump definition type is multiple point. 

Again, I don't know if this is the right way to model. What i know is that I have to run different scenarios both pumps on and then each one alone and see if they fight each other. Also I have negative pressure in system.MG-1 Pump out- Runout.zip

Appreciate the help!

Thank you

Mack Sarieddine