Physical Installation - Little Giant 9SC Series Owner's Manual

Physical Installation

Risk of damage to pump or other equipment.
• Support pump and piping when assembling and when installed. Failure to do so may cause piping to break, pump
to fail, motor bearing failures, etc.
• If the relief hole in the discharge pipe is not provided, the pump could "air lock" and will not pump water even
though it will run.
• A missing, improperly installed, or malfunctioning check valve can cause a pump to short-cycle due to back-flow
of the pumped fluid from the discharge plumbing back into the basin, significantly shortening the life of the
pump.
NOTE: To test the operation before installing, refer to
1. Install the pump in the center of a suitable gas-tight basin that is at least 18" in diameter and 30"
deep and vented in accordance with local plumbing codes.
• Place as close as possible to the water source to minimize suction piping length.
• Provide adequate room for future servicing, protection from freezing temperatures, flooding,
and equipment drainage.
• Never place the pump directly on clay, earth, or gravel surfaces.
• Ensure sump is clean and free of nails, gravel, string, cloth, or other debris before installing.
IMPORTANT: Do not attempt to restrict the intake side of the pump.
2. Connect discharge piping, using pipe joint compound at all connections.
• These pumps are available with 2" NPT discharge and 3" FNPT discharge.
• The discharge pipe should be as short as possible and contain as few elbows as possible.
• Piping should be the same diameter as the discharge port.
• If reduced flow rates are required, place a valve on the discharge side of the pump.
• If flexible vinyl tubing is used, a clamp can be used on the tubing to restrict the flow.
3. Install a union in the discharge line just above the basin cover.
4. Install a free-flow check valve in the discharge line that will easily pass 2" solids.
• Install the check valve in a horizontal position or at an angle of no more than 45°.
5. Tape the pump and switch cords to the discharge piping with electrical tape.
6. Add an air relief bleed hole 3/16" in diameter in the discharge pipe. Refer to
page 4.
• Drill this hole at a 45° angle below the horizontal plane and away from the pump.
7. Confirm that the pump is functioning as intended.
NOTE: It is normal for a stream of water to spray from the air bleed hole in the pump's plumbing.
Confirm that this spray is captured within the basin.
8. Place cover over basin.
Physical Installation
"Operation Testing" on page
"Typical Installation" on
INSTALLATION
6.
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