Pumps

Create or edit Pump Curve objects.

Icon	Command	Shortcut Key	Toolbar
	STORMSWMMPUMPGRAPHS

The pump curve specifies the relationship of flow through a pump link to the depth or volume at the upstream node, or to the head delivered by the pump.

Pumps are links used to lift water to higher elevations. A pump curve describes the relation between a pump's flow rate and conditions at its inlet and outlet nodes. Four different types of pump curves are supported.

The on/off status of pumps can be controlled dynamically through user-defined Control Rules. Rules can also be used to simulate variable speed drives that modulate pump flow.

Procedure

The Pump Curve Editor displays.

Element	Description
Pump Curve Selector	Select the pump curve to edit.
Add Curve	Click to add a new pump curve to the project.
Delete Curve	Click to delete a pump curve from the project.
Pump Curve Name	User-assigned pump curve name.
Pump Curve Type	Select the pump curve type.
Description	An optional comment or description of the pump curve.
Array	Type1 : Table of volume versus flow. Type2 : Table of depth versus flow. Type3 : Table of head versus flow. Type4 : Table of depth versus flow.
Graph	View a graphical plot of the data in the array page.
Load	Click to load in a curve that was previously saved to file.
Save	Click to save the current curve's data to a file.
Print	Click to print the current window.
OK Button	Click to accept the current entries.
Cancel Button	Click to cancel the function.

Array Page

Depending on the Pump Curve type, the array is one of the following tables:

Type1 : Volume versus flow.
Type2 : Depth versus flow.
Type3 : Head versus flow.
Type4 : Depth versus flow.

Graph Page

A graphical representation of the pump curve.