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location should minimize exposure to direct sunlight, freezing rain or conditions that might prevent routine inspection
or access. The control center should always be mounted out of the reach of children.
2.
Remove the cover from the alarm wire junction box connected to the float switch. Solvent weld the junction box to the
conduit containing the alarm leads, located in the second aeration chamber riser.
3.
Reference Figure 9 for all wiring instructions. The black and white alarm wires contained in the junction box are
provided to connect the float switch to the control center. Connect the black wire in the junction box to either alarm
lead from the panel, and secure with a wire nut connector. Connect the white wire in the junction box to the remaining
alarm lead from the panel, and secure with a wire nut connector.
4.
If the air pumps are installed in the aeration chamber risers, solvent weld the conduit connections for each pressure
switch alarm cables to the appropriate junction box. Install two #16 AWG alarm wires from the junction box in the first
aeration riser to the junction box in the second aeration chamber riser. Wire the two pressure switches in series by
connecting one wire from the first pressure switch to one wire from the second pressure switch and secure with a wire
nut connector. Connect the remaining alarm wire from the first pressure switch to either alarm lead from the panel,
and secure with a wire nut connector. Connect the remaining alarm wire from the second pressure switch cable to the
remaining alarm lead from the panel, and secure with a wire nut connector.
5.
Reinstall and secure the cover on the alarm wire junction boxes. Plug any unused junction box openings.
6.
Proceed to the control center. Detach the cover from the control center enclosure and remove the insert from the
mounting posts. Set the control center insert aside. Remove the knockouts in the bottom of the enclosure and install a
sealed conduit connector (distributor to provide) in each opening. Exposed wiring to or from the control center should
always be encased in conduit. Mount the control center securely using masonry nails, wood screws or common nails
as appropriate.
7.
Use a dedicated 115 VAC, single-phase circuit at the main electrical service panel. A 15 amp circuit breaker is
recommended (10 amp minimum). CAUTION: MAKE SURE THIS CIRCUIT IS DE-ENERGIZED. CHECK IT WITH AN
ELECTRICIAN'S TEST LIGHT BEFORE PROCEEDING. REMEMBER THAT OTHER CIRCUITS IN THE SERVICE
PANEL MAY REMAIN ENERGIZED AS YOU ARE WORKING. USE ONLY TOOLS WITH INSULATED HANDLES,
STAND IN A DRY LOCATION AND WORK WITH EXTREME CARE.
8.
Open the black electrical insulator on the back of the control center insert for access to power and alarm wiring
connections.
FIGURE 9
Page 7
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