1. Informació important de seguretat
Please read this entire manual carefully before installing, operating, or performing maintenance on the Hanchen HC-918 pump. Failure to follow these instructions may result in property damage, serious injury, or death. Keep this manual for future reference.
- Seguretat elèctrica: Ensure the pump is connected to a properly grounded electrical outlet. Do not operate with damaged cords or plugs. Disconnect power before servicing.
- Pressió de l'aigua: This system operates under pressure. Ensure all connections are secure and leak-free to prevent water damage or injury.
- Instal·lació: Installation should be performed by a qualified professional or experienced individual familiar with plumbing and electrical systems.
- Entorn de funcionament: Do not operate the pump in explosive atmospheres or where flammable liquids or gases are present. Protect the pump from freezing temperatures.
- Nens i animals de companyia: Mantingueu els nens i les mascotes allunyats de la bomba durant el funcionament.
2. Producte acabatview i Components
The Hanchen HC-918 is a versatile 3/4 HP shallow well pump and automatic booster system designed for various water transfer and pressure boosting applications. It features automatic on/off operation based on water flow and pressure, a durable SUS 304 stainless steel pump head, and an integrated pressure tank.

Figure 2.1: Hanchen HC-918 Shallow Well Pump and Booster System.
Característiques principals:
- Doble funció: Operates as both a shallow well pump and an automatic booster system.
- Funcionament automàtic: Starts when water is drawn and stops when flow ceases, conserving energy.
- Dual-Sensor Safety: Equipped with both flow and pressure detection switches for reliable and safe operation.
- Construcció duradora: SUS 304 stainless steel pump head for corrosion resistance and clean water.
- Integrated Pressure Tank: Reduces frequent pump starts, extending machine life.
Components inclosos:
- Hanchen HC-918 Pump Unit
- Vàlvula inferior
- Vàlvula de retenció
- Cinta de segellat

Figure 2.2: Labeled components of the Hanchen HC-918 pump.
3. Especificacions
| Especificació | Valor |
|---|---|
| Número de model | HC-918 |
| Font d'alimentació | Elèctric amb cable |
| Material del capçal de la bomba | Acer inoxidable SUS 304 |
| Pes | 14.5 lliures |
| Dimensions (aprox.) | 13" (llargada) x 6" (amplada) x 11" (alçada) |
| Interval de temperatura de funcionament | 0 °C - 76.7 °C |

Figure 3.1: Operating temperature range for the pump.
4. Instal·lació i configuració
Proper installation is crucial for the safe and efficient operation of your pump. Consult local plumbing and electrical codes.
4.1 Selecció del lloc:
- Instal·leu la bomba en un lloc sec i ben ventilat, protegit de la llum solar directa, la pluja i les temperatures de congelació.
- Assegureu-vos que la bomba estigui col·locada sobre una superfície estable i plana per minimitzar les vibracions.
- Allow adequate space around the pump for ventilation and maintenance.
4.2 Connexions de fontaneria:
- Connect the suction line (inlet) to your water source (e.g., shallow well). Ensure the suction line is airtight to prevent air leaks, which can cause the pump to lose prime.
- Install the provided check valve on the inlet line. This is essential for the water flow sensor to function correctly and to maintain prime.
- Connect the discharge line (outlet) to your household plumbing or irrigation system.
- Use appropriate pipe fittings and sealing tape to ensure all connections are watertight.

Figure 4.1: Water flow sensor and check valve installation reminder.
4.3 Aciment de la bomba:
- Before initial operation, the pump must be primed. Remove the water injection port plug (refer to Figure 2.2).
- Ompliu la bomba casing completely with water until it overflows from the injection port.
- Replace the water injection port plug securely.
4.4 Connexió elèctrica:
- Connect the pump to a dedicated, grounded electrical circuit with appropriate voltage (e.g., 110V for typical household use).
- Ensure the power supply matches the pump's requirements.
4.5 Adjusting Start Pressure:
The pump features an adjustable start pressure setting to meet different inlet water pressure requirements. Locate the cut-in pressure adjustment dial (refer to Figure 4.2) and rotate it to set the desired starting pressure. Note: The stop pressure cannot be adjusted.

Figure 4.2: Adjustable start pressure dial.
5. Funcionament
Once installed and primed, the Hanchen HC-918 pump operates automatically.
5.1 Automatic Start and Stop:
The pump is equipped with a built-in water pressure sensor and water flow sensor. When a tap or water outlet is opened, the system detects a drop in pressure and water flow, automatically starting the pump. When the tap is closed and water flow ceases, the pump will automatically shut off after a short delay.

Figure 5.1: Automatic start and stop functionality.

Figure 5.2: Water pressure sensor detects changes to start/stop the pump.
5.2 Aplicacions:
This pump is suitable for a wide range of applications, including:
- Shallow well water transfer
- Home water pressure boosting
- Supporting water heaters
- Garden irrigation and sprinklers
- Water supply from water towers or tanks

Figure 5.3: Wide range of applications for the Hanchen pump.

Figura 5.4: Example household water system integration.
6. Manteniment
Regular maintenance ensures the longevity and optimal performance of your Hanchen pump.
- Inspecció periòdica: Periodically check all plumbing connections for leaks and tighten as necessary. Inspect the power cord for any damage.
- Neteja: Keep the pump exterior clean and free from debris. Ensure the cooling fan (Figure 2.2) is not obstructed to allow for proper heat dissipation.
- Hivernització: If the pump is installed in an area subject to freezing temperatures, it must be drained completely to prevent damage. Disconnect power, open the drain screw (Figure 2.2), and allow all water to exit the pump and associated piping.
- Capçal de la bomba: The SUS 304 stainless steel pump head is designed for corrosion resistance, contributing to cleaner water and extended product life.

Figure 6.1: Heat vent and cooling fan for motor heat dissipation.

Figure 6.2: Stainless steel impeller for stable and large flow.
7. Solució De Problemes
Abans de contactar amb el servei d'assistència, review els següents problemes i solucions habituals:
| Problema | Causa possible | Solució |
|---|---|---|
| La bomba no arrenca | No power; tripped circuit breaker; pump not primed; air leak in suction line; faulty sensor. | Check power connection and circuit breaker. Prime the pump. Inspect suction line for leaks. Contact support if sensors are suspected. |
| Pump runs continuously or cycles frequently | Leak in plumbing system; faulty check valve; low water level in source; pressure tank issue. | Check for leaks in the entire plumbing system. Inspect or replace check valve. Ensure adequate water supply. |
| Baixa pressió d'aigua | Partially closed valve; clogged filter; air in system; pump losing prime; incorrect start pressure setting. | Ensure all valves are fully open. Clean any filters. Re-prime the pump. Adjust start pressure. |
| La bomba és sorollosa | Air in system; cavitation; loose mounting; foreign object in pump. | Re-prime the pump. Ensure stable mounting. Disconnect power and inspect for obstructions (if safe to do so). |
8. Garantia i Suport
For warranty information or technical support, please refer to the product packaging or contact Hanchen customer service directly. Keep your purchase receipt as proof of purchase.
La informació de contacte normalment es pot trobar a la fitxa del fabricant website or on the product's original packaging.





