1. Introduktion
This manual provides detailed instructions for the installation, operation, and maintenance of your Star 1/2 HP Submersible Well Pump Control Box, Model 127189A. Please read this manual thoroughly before installation and use to ensure safe and efficient operation. This control box is designed for use with 1/2 HP submersible well pumps operating at 230 Volts and is suitable for both outdoor and indoor installations.
2. Sikkerhedsoplysninger
WARNING: DISCONNECT POWER BEFORE OPENING. DANGER OF ELECTRIC SHOCK.
Overhold altid følgende sikkerhedsforanstaltninger for at mindske risikoen for elektrisk stød, personskade eller brand:
- Installation and servicing must be performed by a qualified electrician or authorized service personnel in accordance with all local and national electrical codes.
- Ensure the main power supply to the pump system is disconnected and locked out before attempting any installation, maintenance, or troubleshooting.
- Kontroller, at voltage and horsepower ratings of the control box match those of your submersible well pump.
- Do not operate the control box if it is damaged or has exposed wiring.
- Dette produkt indeholder kemikalier, der af staten Californien er kendt for at forårsage kræft og fosterskader eller andre reproduktionsskader (advarsel i henhold til Proposition 65). Vask hænder efter håndtering.
3. Produktfunktioner
The Star 1/2 HP Submersible Well Pump Control Box, Model 127189A, offers the following key features:
- Designed for 1/2 HP submersible well pumps.
- Operates on 230 Volt electrical systems.
- Suitable for both outdoor and indoor installations.
- Features a heavy-duty terminal block for secure electrical connections.
- Equipped with side and bottom knockouts for convenient wire installation.
- Interchangeable with many industry-standard control boxes.
- Incorporates a universal voltage relay for reliable performance.

Billede 1: Forside view of the Star 1/2 HP Submersible Well Pump Control Box, Model 127189A, showing the warning label and model information.
4. Opsætning og installation
Proper installation is critical for the safe and efficient operation of your well pump system. It is highly recommended that installation be performed by a qualified professional.
- Strømafbrydelse: Before beginning any work, ensure that all power to the well pump circuit is completely disconnected at the main breaker panel. Verify with a voltage tester.
- Montering: Mount the control box securely to a wall or suitable surface using appropriate fasteners. Ensure the mounting location is protected from direct weather exposure if installed outdoors, or in a dry, accessible location if indoors.
- Forberedelse af ledning: Use the side or bottom knockouts to route the electrical conduits and wires into the control box. Ensure all wiring complies with local electrical codes.
- Ledningsforbindelser: Connect the pump motor wires, power supply wires, and ground wire to the heavy-duty terminal block inside the control box. Refer to the wiring diagram provided with your specific well pump for correct terminal assignments. Ensure all connections are tight and secure.
- Lukning af kabinet: Once all connections are made and verified, securely close the control box cover.
- Strømgendannelse: Restore power to the circuit and test the pump operation.
5. Betjeningsvejledning
The Star 1/2 HP Submersible Well Pump Control Box is designed for automatic operation in conjunction with your well pump and pressure switch (or other control device). Once properly installed and powered, the control box will manage the electrical supply to the pump based on the signals received from the system's pressure switch or other controlling mechanisms.
- Ensure the control box cover is always securely closed during operation.
- Monitor the pump system for normal operation. Unusual noises or lack of water flow may indicate a problem.
6. Vedligeholdelse
Regular maintenance helps ensure the longevity and reliable performance of your control box and well pump system.
- Årlig inspektion: At least once a year, with the power disconnected, inspect the control box for any signs of corrosion, loose connections, or damaged wiring.
- Renhed: Keep the exterior of the control box clean and free from dust, dirt, and debris.
- Ventilation: Ensure that any ventilation openings (if present) are not obstructed to prevent overheating.
- Professionelt tjek: Consider having a qualified technician perform a comprehensive check of your well pump system, including the control box, every few years.
7. Fejlfinding
If your well pump system is not functioning correctly, consider the following troubleshooting steps. Always disconnect power before inspecting the control box.
- Pumpen starter ikke:
- Check the main circuit breaker for the pump system.
- Verify that the pressure switch is functioning correctly and calling for water.
- Inspect wiring connections inside the control box for looseness or corrosion (with power off).
- Frequent Cycling:
- This may indicate a problem with the pressure tank, a leak in the system, or a faulty pressure switch, rather than the control box itself.
- No Power to Control Box:
- Kontroller hovedstrømforsyningen og afbryderen.
If these steps do not resolve the issue, contact a qualified pump technician for further diagnosis and repair.
8. Specifikationer
| Modelnummer | 127189A |
| Hestekræfter | 0.50 HK |
| Voltage | 230 volt |
| Wattage | 1380 watt |
| Varens vægt | 2.84 pund |
| Produktdimensioner | 6 x 5 x 10 tommer |
| Stil | Nedsænkelig |
| Fabrikant | Standard VVS-forsyning |
9. Garanti og support
For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact Star Water Systems directly. You can also visit the Star Store on Amazon for yderligere produktinformation og ressourcer.





