User Manual Q&AAnswer
Feb 24, 2025 - 12:17 AM
To install the SJE RHOMBUS 32S Lift Station Control Panel, follow these steps:
1. Ensure that a licensed electrician installs and services the control panel in accordance with the National Electric Code NFPA-70, state, and local electrical codes.
2. Seal all conduit running from the sump or tank to the control panel with conduit sealant to prevent moisture or gases from entering the panel. Use NEMA 4X enclosures for indoor or outdoor use to protect against corrosion, dust, rain, splashing water, and hose-directed water. Ensure that cable connectors are liquid-tight in NEMA 4X enclosures.
3. Check the incoming power to ensure that the voltage, amperage, and phase meet the requirements of the pump motor being installed. Always refer to the pump identification plate for electrical requirements.
4. The 32S Lift Station Control Panel is designed to operate via a four-float system. Install floats for pump(s) stop, lead pump start, lag pump start, and high-level alarm. Use the float label kit to identify and label cables on both float and stripped ends. Refer to the schematic for float connection.
5. Mount the float switches at appropriate levels, ensuring that they have a free range of motion without touching each other or other equipment in the basin.
6. Determine the mounting location for the control panel. If the distance exceeds the length of the float switch cables or pump power cables, splicing will be required. For outdoor or wet installations, use a NEMA 4X junction box with liquid-tight connectors for required connections. Apply conduit sealant to prevent moisture or gases from entering the panel. Do not mount the junction box in the wet well.
7. Determine the conduit entrance locations on the control panel and drill proper size holes for the type of connectors being used. If using conduit, ensure it is of adequate size to pull the pump and switch cables through. Attach cable connectors and/or conduit connectors to the control panel.
8. If installation requires a splice, determine the location for mounting the junction box according to state and local code requirements. Mount the junction box to proper support. Run separate conduits for float switch cables and pump cables. Do not run them in the same conduits. Identify and label each wire before pulling it through the conduit into the control panel and junction box. Make wire splice connections at the junction box if necessary. Firmly tighten all fittings on the control panel or junction box.
9. In the control panel, insert the appropriate overload modules (purchased separately) in the motor starter. Adjust the dials to match the motor's full load amps. Turn the motor starter switch to the ON position.
10. Connect the pump wires directly to the motor starter terminal positions T1, T2, and T3. For three-phase motors, ensure the pump motor's rotation is correct before installation. To reverse the rotation, swap pump cable connections on any two terminals T1-T2-T3.
11. Connect the "power-in" conductors to the proper locations on the 3-position terminal block for 208/230/460 VAC. Verify that the appropriate voltage tap on the transformer primary matches the incoming voltage. If the incoming power is not 460VAC, change the wire connections to the transformer for proper operation.
12. After installation is complete, verify the correct operation of the control panel.
Please refer to the provided manual for more detailed instructions and safety precautions.
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