Pentair U940 Quick Start Manual

Quick Start Guide
Constant Pressure Booster Pumps
Lake or Cistern
NOTICE: Pump can be used on municipal water sources or wells. Pump
requires positive inlet water pressure to operate - do not attempt to draw
(suck) water from a cistern or lake.
3
Start the Pump
• Press the START/STOP ( ) button.
1
Pump
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Install the Pump
• Locate the pump and connect as shown.
• Open any valves in the inlet and outlet lines.
• Plug pump into grounded outlet.
4
START/STOP
Button
Pressure Gauge
• After one or two minutes, the pressure will stabilize and the pump
should shut off, if there is no water demand.
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• If a pressure gauge is installed in the system, it will show
approximately the same pressure as that shown on the LCD display.
Read owner's manual for safety and operation information.
This guide neither supplements nor replaces the owner's manual.
Grounded
115V outlet
Pressure
Gauge
Check Valve
Unions
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2
Set System Pressure
• Press the {SET} button to select the desired system pressure
(50, 60 or 70 PSI).
NOTICE
Hazardous voltage. Disconnect power before installation
or service.
High pressure. Risk of high heat and possible explosion if
pump is run with outlet closed.
• DO NOT run the pump without water, and never operate it with a
closed or blocked outlet line.
• DO NOT connect hoses to pump.
• DO NOT overtighten the check valve.
• DO NOT remove the check valve plug.
• DO NOT reduce pipe size for inlet or outlet lines.
• DO have an air-tight inlet line.
• DO have a pressure relief valve in the system.
• DO read and follow instructions in the owner's manual.
• DO have electrical and plumbing systems installed by
qualified persons.
SET Button
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© 2011 U940 (6/29/2011)