Little Giant 10EC Series, Руководство пользователя, Страница: 5 / 44

INSTALLATION
Physical Installation
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INSTALLATION
Physical Installation
1. Pump must be installed in a suitable gas-tight basin that is at least 18" in diameter and 24" deep and
vented in accordance with local plumbing codes.
2. Clean any debris from the basin and set the pump in the center of the basin (refer to “Typical Installa -
tion” on page 6 ). A solid bottom will prevent clogging of the pump from sand and dirt.
3. The pump must be placed on a hard, level surface. Never place the pump directly on clay, earth or
gravel surfaces. These surfaces contain small stones, gravel, sand etc. that may clog or damage the
pump and cause pump failure.
4. Do not attempt to restrict the intake side of these pumps. Restricting the intake may cause damage to
the seal and may starve the pump. If reduced flow rates are required, place a valve on the discharge
side of the pump. Or, if flexible vinyl tubing is used, a clamp can be used on the tubing to restrict the
flow.
5. Connect discharge piping. Use pipe joint compound at all connections. Sump pumps can be piped to
discharge into the house drainage system, to a dry well, splash block, or to a storm drain, depending on
local plumbing codes. The discharge pipe should be as short as possible and contain as few elbows as
possible. The discharge pipe should be the same diameter as the discharge size to reduce pipe friction
losses. A smaller pipe will restrict capacity and reduce pump performance. The pump comes with a 1-1/
2" female pipe thread discharge.
•
Support the pump and piping while assembling and when installed. Failure to do so may cause the
piping to break, the pump to fail, motor bearing failures, etc.
• Always install a union in the discharge line just above the basin cover to allow for easy removal of
the pump for cleaning or repair.
6. A check valve must be used in the discharge line to prevent backflow of liquid into the basin. The check
valve should be a free-flow valve that will easily pass solids.
7. Tape the pump and switch cords to the discharge line with electrical tape. This will protect the cord
from damage.
Risk of severe injury or death by electrical shock.
• Always disconnect the electrical power before touching the pump or discharge.
• Check local electrical and building codes before installation. The installation must be in accordance with
their regulations as well as the most recent National Electrical Code (NEC).
Risk of property damage due to flooding.
• Do not install the check valve in a vertical position, as solids may settle in the valve and prevent the
valve from opening on start-up. For best performance of the check valve when handling solids,
install it in a horizontal position or at an angle of no more than 45°.
• When a check valve is used, drill a relief hole (1/8" or 3/16" in diameter) in the discharge pipe. This
hole should be located below the floor line between the pump discharge and the check valve. Unless
such a relief hole is provided, the pump could “air lock” and will not pump water even though it will
run.