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© Copyright 2020 Zoeller®Co. All rights reserved.
Outdoor Prepackaged System Installation Instructions
1. ReviewthedrawinginFig.3onpage8andtheactualsystemto
becomefamiliarwiththecomponentsinthepackagedgrinderpump
system.Reviewwheretheunitwillbeinstalled.Determinewhere
the power feed, inlet pipe, and discharge pipe will be located.
2. Removetheunitfrompacking.Prepackagedoutdoorsystemsare
preassembled at the Zoeller Company and require a minimum of
eldassemblywork.Floatswitchesaresetandtetheredforproper
operation from the Factory. Systems using an automatic unit, WD
orWHseries,haveanintegral“on/off”oatswitch.SeeFig.4
on page 5 for adjustment instructions. The alarm switch should
belocated3”abovethepump“on”level.Threeoatsystems
used with a control panel are placed at 27”, 24”, and 15” from the
bottomofthebasin.Fouroatsystemsusedwithacontrolpanel
are placed at 33”, 27”, 24”, and 15” from the bottom of the basin.
Iftheinvertlocationisatorbelowtheleveloftheoatswitches,
contact the factory.
3. Float switches are tied in place for shipping purposes on all model
prepackagedsystems.Cutthecabletiearoundeachoatswitch
bulb or the unit will not operate properly. Verify that where the
oatswitchesaresetwillworkforyourapplication.Verifying that
the oat switches are set properly and will not hang up inside
the basin is the responsibility of the installing contractor.
4. Dig a hole for the basin. The hole should be at least 24” larger in
diameterthanthebasindiametertoprovide12”ofbackllallaround
anddeepenoughtoprovideeither12”ofcompactedbackllor
6” when a concrete pad is required. Note: Care must be taken
when excavating in order to avoid underground utilities and
disturbance of existing structure foundations. The hole should
be located at least ten feet from adjacent structures. Additional
distance may be required to sufciently locate the basin outside
of the loading area of the adjacent structures.
5. The location of the inlet hub is determined by the depth of the inlet
pipe. The inlet hub must be used with 4” pipe. It is best to install
theinletonthesideofthebasinoppositetheoatswitches.To
install, use a 4” hole saw to drill into the side of the basin at the
correctelevation.Centerthehubinnerdiameterwiththeholein
thebasin.Attachthehubtothesideofthebasinusingthesealant
andhardwareprovided.
6. Thebottomofthe excavationcannow be properlybacklled,
compactedandleveled.Setbasininhole.Ensuretheremovable
coverextendsabovethenishedgradelineandthegradeslopes
awayfromtheunit.Backllandsubbaseshouldbe1/8”–3/4”pea
gravelor1/8”–1/2”crushedstone.(Referencebasininstallation
instructions included with unit.) Connect the 4” inlet pipe to the
inlet hub.
7. Pouring a concrete anchor around system can now be completed.
Basinshouldbelledwithwaterwhenpouringconcretetominimize
movementofthesystem.Backllaroundbasin with specied
media.Careshouldbeusedtoavoiddamagingcomponentsor
leavingvoidswhenbacklling.RefertoBasininstallationreference
guideonmorespecicrequirements.
8. PVCor HDPE dischargepiping is connectedto the 2”threaded
ttinglocatedinthebasinsidewall.Supportdischargepipingwith
sufcientbackll.
9. Connectliftcable to topofpump. Lowerthepumpinto basin ensuring
thedischargepipebracketslidesintothedisconnecttting.
10. Note: Thegrinderbasin isa sewageholding tank. Ventconnection
shouldbe installed in accordance with all national,state and local
plumbing codes.
11. Digatrenchforthe electrical conduit. Theconduitshouldbe located
below the frost line. Follow all applicable electrical codes.
12. Ifusingajunctionbox,connecttheelectricalconduitandwiring
accordingtoinstructionsincludedin this manualandwiringdiagram
inbox.Ifapottingkitisprovidedwiththejunctionbox,followthe
instructionsforsealingtheconduitconnectiontothejunctionbox.
Ifapottingkitisnotprovided,theconduitconnectiontothejunction
boxmustbesealed.
13. Mount the control panel within sight of the system. Connect
oatswitchesand pumpcordsaccording tothe “Pump Wiring
Instructions” found later in this manual and located inside the panel
enclosure.
14. Removeanydebrisfromthebasin.Usingcleanwater,checkthe
system for proper operation.
15. Seal and secure the lid using the proper bolts and sealant when
using a lid without a formed gasket.
16. Test system for leaks and proper pump operation.
17. Record system start up data for future reference.
Thissetofinstructionsisforfactoryprepackagedoutdoorgrindersystemsonly.Ifthisisaeldassembledoutdoorsystem
youcanusetheseinstructionsasaguideline.Ifthisisanindoorsystemthengobacktopages6-7inthismanualthatcoversindoorsystems.