Wstęp
This user manual provides comprehensive instructions for the safe and efficient installation, operation, and maintenance of your Wiltec SK-9 Pressure Switch. This device is designed to automatically control water pumps in household water systems, ensuring reliable pressure regulation and protection against dry running. Please read this manual thoroughly before installation and operation to ensure proper function and longevity of the product.
Produkt ponadview
The Wiltec SK-9 is a single-phase 230V pressure switch suitable for various pumping systems, including domestic waterworks and garden pumps. It features adjustable cut-in and cut-out pressures and includes a dry-run protection function to prevent pump damage.

Rysunek 1: Widok z przodu view of the Wiltec SK-9 Pressure Switch.

Rysunek 2: Dół view of the pressure switch, highlighting the water connection point.

Figure 3: Close-up of the pressure connection, showing the threaded inlet.
Instrukcje bezpieczeństwa
- Przed instalacją, konserwacją lub naprawą należy zawsze odłączyć zasilanie.
- Instalację powinien wykonać wykwalifikowany elektryk, zgodnie z lokalnymi przepisami elektrycznymi.
- Upewnij się, że objętośćtage and current ratings of the switch match your pump and electrical supply.
- Do not operate the switch if it is damaged or has exposed wiring.
- Chroń urządzenie przed wilgocią i ekstremalnymi temperaturami.
- Maksymalna temperatura wody roboczej wynosi 50°C.
Konfiguracja i instalacja
The Wiltec SK-9 pressure switch is designed for easy integration into existing pump systems. Follow these steps for proper installation:
- Montowanie: Securely mount the pressure switch in a dry, protected location close to the pump or pressure tank. Ensure it is easily accessible for adjustments.
- Podłączenie elektryczne:
- Disconnect the main power supply to the pump system.
- Open the electrical housing of the pressure switch.
- Connect the incoming power supply (230V, 1-phase) to the designated terminals. This switch simultaneously switches both the phase and neutral conductors.
- Connect the pump's power cable to the output terminals.
- Sprawdź, czy wszystkie połączenia są szczelne i odpowiednio zaizolowane.
- If your pump has a power rating exceeding 1.1 kW, it is recommended to install a standard power protection device or a suitable power relay.
- Podłączenie wody:
- Connect the pressure switch to the water line, typically between the pump and the pressure tank (if applicable), or directly to the pump's discharge side.
- Ensure a watertight seal using appropriate thread sealant. The connection is typically 1/4" NPT.

Figure 4: Internal components and connection points. (1) Cut-in pressure adjustment, (2) Differential pressure adjustment.

Rysunek 5: Wymiary produktu (ok. 104 mm x 64 mm x 104 mm).

Figure 6: Detail of the 1/4" NPT internal thread connection.
Operating Instructions and Pressure Adjustment
The Wiltec SK-9 automatically controls your pump based on the water pressure. Both the cut-in (switch-on) and cut-out (switch-off) pressures are continuously adjustable.
- Początkowe ustawienia: After installation, ensure the system is filled with water and free of air.
- Regulacja ciśnienia:
- The pressure switch has two adjustment points (refer to Figure 4):
- Cut-in Pressure (1): This is the pressure at which the pump turns on. Adjust this using the main spring screw (1).
- Differential Pressure (2): This is the difference between the cut-out and cut-in pressure. Adjust this using the smaller screw (2).
- To set the pressures:
- Poluzować nakrętkę różnicy ciśnień (2).
- Adjust the cut-in pressure (1) to your desired value. Turning clockwise increases pressure.
- Tighten the differential pressure nut (2) until the desired cut-out pressure is reached. The cut-out pressure will be the cut-in pressure plus the differential pressure.
- The pump will switch on when the pressure drops below the set cut-in pressure and switch off when it reaches the set cut-out pressure.
- The pressure switch has two adjustment points (refer to Figure 4):
- Ochrona przed pracą na sucho: The integrated dry-run protection feature will automatically shut off the pump if the water pressure drops too low, preventing damage to the pump from running without water.

Figure 7: Pressure adjustment range. Factory setting: 1.4 - 2.8 bar. Pressure range: 1 - 5 bar. Rated current: 16A. Rated voltage: 250V (PM/5), 500V (PT/5).
Konserwacja
The Wiltec SK-9 Pressure Switch requires minimal maintenance. Regular checks can ensure optimal performance and extend its lifespan.
- Regularna kontrola: Okresowo sprawdzaj przełącznik pod kątem uszkodzeń fizycznych, korozji lub luźnych połączeń.
- Czystość: Keep the exterior of the switch clean and free from dust and debris.
- Weryfikacja ciśnienia: Occasionally verify that the cut-in and cut-out pressures are still set correctly and that the pump is cycling as expected.
- Zimowanie: If the system is exposed to freezing temperatures, ensure the pressure switch and connected pipes are drained to prevent ice damage.
Rozwiązywanie problemów
| Problem | Możliwa przyczyna | Rozwiązanie |
|---|---|---|
| Pompa nie uruchamia się. | No power supply; Incorrect wiring; Pressure too high (above cut-in); Dry-run protection activated. | Check power connection and circuit breaker; Verify wiring according to instructions; Check system pressure, adjust cut-in pressure if necessary; Check water supply to pump. |
| Pompa pracuje nieprzerwanie. | System leak; Cut-out pressure not reached; Pressure switch faulty. | Check for leaks in the system; Adjust cut-out pressure; Replace pressure switch if faulty. |
| Pompa pracuje zbyt często. | Small leak in system; Pressure tank issues (if applicable); Differential pressure too small. | Check for minor leaks; Inspect pressure tank (e.g., air charge); Increase differential pressure setting. |
| Dry-run protection activates prematurely. | Insufficient water supply to pump; Air in the system. | Ensure adequate water source; Bleed air from the pump and system. |
Specyfikacje
| Funkcja | Szczegół |
|---|---|
| Model | SK-9 |
| Numer części | 50622 |
| Tomtage | 230 V (1-phase) |
| Maksymalny prąd | 10 A (up to 16 A for certain configurations, refer to graph) |
| Adjustable Cut-in Pressure | 1.4 - 2.8 bar |
| Adjustable Cut-out Pressure | Up to 4.1 bar (max. operating pressure 6 bar) |
| Ochrona przed suchobiegiem | Zintegrowany |
| Maks. Temperatura wody | 50 °C |
| Wymiary (dł. x szer. x wys.) | 10.5 x 6.4 x 10.3 cm (ok. 104 x 64 x 104 mm) |
| Waga | 380 gramów |
| Tworzywo | Metal, Plastic (Black) |
| Wątek połączeniowy | Gwint wewnętrzny NPT 1/4" |
Gwarancja i wsparcie
Wiltec products are manufactured with high quality standards. For information regarding warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Wiltec website. For technical support or inquiries, please contact Wiltec customer service.
Dostępność części zamiennych w UE: 2 lat
Aby uzyskać dalszą pomoc, możesz odwiedzić stronę Wiltec Store on Amazon.





