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© Copyright 2021 Zoeller
®
Co. All rights reserved.
Outdoor Prepackaged System Installation Instructions
1. Review the drawing in Fig. 3 on page 8 and the actual system to
become familiar with the components in the packaged grinder pump
system. Review where the unit will be installed. Determine where
the power feed, inlet pipe, and discharge pipe will be located.
2. Remove the unit from packing. Prepackaged outdoor systems are
preassembled at the Zoeller Company and require a minimum of
field assembly work. Float switches are set and tethered for proper
operation from the Factory. Systems using an automatic unit, WD
or WH series, have an integral “on/off” float switch. See Fig. 4
on page 5 for adjustment instructions. The alarm switch should
be located 3” above the pump “on” level. Three float systems
used with a control panel are placed at 27”, 24”, and 15” from the
bottom of the basin. Four float systems used with a control panel
are placed at 33”, 27”, 24”, and 15” from the bottom of the basin.
If the invert location is at or below the level of the float switches,
contact the factory.
3. Float switches are tied in place for shipping purposes on all model
prepackaged systems. Cut the cable tie around each float switch
bulb or the unit will not operate properly. Verify that where the
float switches are set will work for your application.
Verifying that
the float 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
diameter than the basin diameter to provide 12” of backfill all around
and deep enough to provide either 12” of compacted backfill or
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 sufficiently locate the basin outside
of the loading area of the adjacent structures.
5. Determine the location of the inlet hub based upon your inlet pipe
arrangement. The inlet hub must be used with 4” pipe. It is best to
install the inlet on the side of the basin opposite the float switches.
Most systems are supplied with a field installed 4” pipe seal inlet
fitting. This inlet fitting is installed in the basin’s side-wall in a 5”
hole drilled with a hole saw at a location lining up with the inlet
pipe.
6. The bottom of the excavation can now be properly backfilled,
compacted and leveled. Set basin in hole. Ensure the removable
cover extends above the finished grade line and the grade slopes
away from the unit. Backfill and subbase should be 1/8” –3/4” pea
gravel or 1/8” –1/2” crushed stone. (Reference basin installation
instructions included with unit.) Connect the 4” inlet pipe to the
inlet hub.
7. Pouring a concrete anchor around system can now be completed.
Basin should be filled with water when pouring concrete to minimize
movement of the system. Backfill around basin with specified
media. Care should be used to avoid damaging components or
leaving voids when back filling. Refer to Basin installation reference
guide on more specific requirements.
8. PVC or HDPE discharge piping is connected to the 2” threaded
fitting located in the basin sidewall. Support discharge piping with
sufficient backfill.
9. Connect lift cable to top of pump. Lower the pump into basin ensuring
the discharge pipe bracket slides into the disconnect fitting.
10.
Note: The grinder basin is a sewage holding tank. Vent connection
should be installed in accordance with all national, state and local
plumbing codes.
11. Dig a trench for the electrical conduit. The conduit should be located
below the frost line. Follow all applicable electrical codes.
12. If using a junction box, connect the electrical conduit and wiring
according to instructions included in this manual and wiring diagram
in box. If a potting kit is provided with the junction box, follow the
instructions for sealing the conduit connection to the junction box.
If a potting kit is not provided, the conduit connection to the junction
box must be sealed.
13. Mount the control panel within sight of the system. Connect
float switches and pump cords according to the “Pump Wiring
Instructions” found later in this manual and located inside the panel
enclosure.
14. Remove any debris from the basin. Using clean water, check the
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.
This set of instructions is for factory prepackaged outdoor grinder systems only. If this is a field assembled outdoor system
you can use these instructions as a guideline. If this is an indoor system then go back to pages 6-7 in this manual that covers indoor systems.
