Liberty Pumps Pro Serie Manuel D'installation page 11

Supplemental Installation Instructions
PRO 370XL/380XL/680XL Series 10' stack test basins
XL Series sewage ejector basins are designed to withstand the 10' stack test required by some municipalities. Proper installation of the
specified cover flange is essential to ensure that the test is met. Strict adherence to these instructions is required. Under no
circumstances should the cover be installed in a manner inconsistent with these instructions.
Types of Systems:
XL Series Basins are available as Fully Assembled Systems complete with pump and discharge piping, as Basin and Cover Assembly
Kits with no pump or plumbing, and as Basins only. Please follow the instructions below as required to correspond to the type of
system you have.
Basin Installation:
1. For all systems refer to the primary instructions as supplied with this Ejector System or Basin for excavating the pit, plumbing
connections, and backfilling.
2. If the top of the 370XL, 380XL, 680XL Series basin is below grade, an access riser model ARC18 is required. The maximum
burial depth of 18" with respect to the top of the basin. Consult Liberty Pumps or your distributor for more information on ARC
Series Access Risers. 1-800-543-2550.
Installing the pump in the XL Series Basin or XL Basin and Cover Assembly Kit:
1. Liberty Pumps XL Series Basins as purchased separately will require the appropriate 16-bolt Pro-Series cover assembly to make
an effectively sealed ejector system. Contact the factory for the proper cover for your application.
2. Size the length of the discharge piping to reach from the discharge of the pump to be within the discharge pipe socket with integral
lip seal on the underside of the Pro-Series cover. Liberty Pumps sewage pumps will use threaded-one-end (TOE) nipples of
23.75" length for 370XL Series Basins, or 17.50" long for 380XL and 680XL Series Basins. Install the pipe into the threaded
discharge of the pump.
3. Lower the pump into the basin, fitting the pump legs into the Torque Stops.
4. Insert power cord for the pump -- and the piggyback switch cord, if so equipped -- through the underside of the inspection cover
hole and position cover over pipe nipple while aligning the bolt holes. Use sixteen 1/4 - 20 UNC bolts and washers to secure cover
to the basin. Tighten bolts to 40 inch-pounds. WARNING: Do not over tighten bolts. The soft, integral gasket will conform to the
top of the tank. The bolts may be re-torqued up to 60 inch-pounds to seal any leaks that may occur during a 10' stack test.
Additionally, a small amount of RTV silicone sealant may be used should the gasket or inserts be damaged.
5. Liberty Pumps recommends the use of manual type pumps and the appropriate Liberty QuickTree
pump control and alarm floats. Contact the factory for ordering information. Install the QuickTree
Liberty Pumps automatic type pumps with piggyback float switches may also be used. Lay the power cable and switch cable in the
grooves in the inspection cover recess as is shown in the primary instructions as included with this system. Attach the inspection
cover to the main cover using six 1/4 - 20 UNC bolts and washers. Tighten the bolts furthest away from the power cord grooves
first, torqueing to 40 inch-pounds. WARNING: Do not over tighten bolts. The soft, integral gasket will conform to the top of the
cover and power cords. The bolts may be re-torqued up to 60 inch-pounds to seal any leaks that may occur during a 10' stack test.
Additionally, a small amount of RTV silicone sealant may be used should the gasket or inserts be damaged.
370XL and 380XL Series Basins IAPMO listed, # 4361
®
Switch Kit for mounting of
®
Kit per the instructions included.
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