1. Giới thiệu
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Pedrollo PQm81-Bs peripheral booster water pump. Please read this manual thoroughly before installation and operation to ensure proper use and to prevent damage or injury.
The Pedrollo PQm81-Bs is designed for pumping clean water that does not contain abrasive particles and liquids that are not chemically aggressive towards the pump's materials. Its compact design and hydraulic characteristics make it suitable for various industrial applications, including cooling systems, air conditioning systems, and ironing systems.

Hình 1: Pedrollo PQm81-Bs Peripheral Booster Water Pump. This image shows the blue-colored pump unit with its motor and pump housing, designed for surface installation.
2. Thông tin an toàn
CẢNH BÁO: Không tuân thủ các hướng dẫn an toàn này có thể dẫn đến điện giật, hỏa hoạn, thương tích nghiêm trọng hoặc tử vong.
- Always disconnect the power supply before performing any installation, maintenance, or repair work on the pump.
- Ensure the electrical installation complies with all local and national electrical codes. The pump requires a 115 Volts (AC) power supply.
- The pump must be installed in a well-ventilated, closed area, protected from adverse weather conditions.
- Do not operate the pump with flammable, explosive, or corrosive liquids. Only use with clean water as specified.
- Không để trẻ em và người không có nhiệm vụ lại gần máy bơm trong khi máy đang hoạt động.
- Đảm bảo nối đất đúng cách cho máy bơm để tránh nguy cơ điện.
- Never run the pump dry. Operating without liquid can cause severe damage to the pump.
3. Thiết lập và Cài đặt
3.1. Yêu cầu về vị trí
- Install the pump in a well-ventilated area to prevent overheating.
- The installation site must be protected from rain, direct sunlight, and freezing temperatures.
- The pump is designed for above-ground installation. Ensure a stable, level surface for mounting.
3.2. Kết nối hệ thống ống nước
- Connect the suction and discharge pipes securely. Use appropriate thread sealant to prevent leaks.
- Ensure that the piping system does not place undue stress on the pump connections. Support pipes independently if necessary.
- Install a foot valve with a strainer on the suction line if drawing water from a source below the pump to maintain prime and prevent debris entry.
- For optimal performance, keep suction lift as short as possible. The maximum manometric suction lift is 8 meters.
3.3. Kết nối điện
- Connect the pump to a dedicated 115 Volts (AC), 60Hz power supply.
- Ensure the circuit is protected by an appropriately sized circuit breaker or fuse.
- All electrical connections must be made by a qualified electrician and conform to local electrical codes.
- Verify proper grounding of the pump motor.
3.4. Khởi động máy bơm
- Trước khi khởi động lần đầu, máy bơm casing and suction line must be completely filled with the liquid to be pumped.
- Open the priming plug (if available) or a valve on the discharge side and slowly fill the pump with water until it overflows.
- Close the priming plug/valve. The pump is now primed and ready for operation.

Hình 2: Pedrollo PQm81-Bs Pump Dimensions Diagram. This diagram illustrates the physical dimensions and connection points of the pump, including suction (DN1) and discharge (DN2) ports, and overall length (f), height (h), and width (n1) measurements.
4. Hướng dẫn vận hành
4.1. Khởi động ban đầu
- After priming, ensure all connections are tight and there are no leaks.
- Turn on the power supply to the pump. The pump should start immediately.
- Monitor the pump for unusual noises or vibrations during the first few minutes of operation.
- Check the discharge pressure and flow rate to ensure they are within expected parameters.
4.2. Điều kiện hoạt động
- Loại chất lỏng: Clean water, free from abrasive particles and non-chemically aggressive.
- Nhiệt độ chất lỏng: -10 °C to +90 °C (14 °F to 194 °F).
- Nhiệt độ môi trường: -10 °C to +40 °C (14 °F to 104 °F).
- Nâng bằng phương pháp hút áp suất: Lên đến 8 mét (26 feet).
- Áp suất làm việc tối đa: 10 thanh (145 psi).
- Tránh chạy máy bơm khô vì điều này có thể gây hư hỏng nghiêm trọng cho phớt cơ khí và các bộ phận khác.

Hình 3: Pedrollo PQm81-Bs Performance Curve. This graph displays the relationship between pump head (in meters and feet) and flow rate (in l/min and US g.p.m.) for the PQm81-Bs model at 60 Hz and 3450 min⁻¹ (n=0m), illustrating its operational characteristics.
5. Bảo trì
Regular maintenance ensures the longevity and efficient operation of your Pedrollo pump. Always disconnect power before performing any maintenance.
5.1. Kiểm tra định kỳ
- Kiểm tra trực quan: Periodically check for any signs of leaks, corrosion, or damage to the pump casing, motor, and electrical connections.
- Tiếng ồn và độ rung: Listen for unusual noises or excessive vibrations, which may indicate a problem.
- Nhiệt độ: Ensure the motor is not overheating. Excessive heat can indicate motor issues or improper ventilation.
5.2. Vệ sinh
- Keep the pump exterior clean and free from dust and debris to ensure proper cooling.
- If a foot valve with a strainer is used, periodically check and clean the strainer to prevent clogging and maintain flow.
5.3. Chuẩn bị cho mùa đông (nếu có)
- If the pump is installed in an area subject to freezing temperatures, drain all water from the pump and piping system to prevent damage from ice expansion.
- Store the pump in a warm, dry place if it is to be out of service for an extended period during cold weather.
KHAI THÁC. Xử lý sự cố
This section provides solutions to common issues. For problems not listed here or if solutions do not resolve the issue, contact qualified service personnel.
| Vấn đề | Nguyên nhân có thể | Giải pháp |
|---|---|---|
| Máy bơm không khởi động | No power supply; Blown fuse/tripped breaker; Motor fault | Check power connection; Reset breaker/replace fuse; Consult a qualified electrician. |
| Máy bơm chạy nhưng không có nước hoặc lưu lượng thấp | Pump not primed; Suction line leak; Clogged strainer/foot valve; Air in system; Impeller damage | Re-prime the pump; Check all suction connections for leaks; Clean strainer; Bleed air from system; Inspect impeller for damage. |
| Tiếng ồn hoặc độ rung quá mức | Cavitation (air in system); Misalignment; Worn bearings; Debris in pump | Ensure pump is fully primed and suction line is sealed; Check mounting for stability; Contact service for bearing inspection; Inspect pump for foreign objects. |
| rò rỉ máy bơm | Loose connections; Damaged seals; Cracked casing | Tighten connections; Replace seals; Contact service for casing repair/replacement. |
7. Thông số kỹ thuật
Technical specifications for the Pedrollo PQm81-Bs Peripheral Booster Water Pump:
| Tính năng | Chi tiết |
|---|---|
| Người mẫu | PQm81-Bs |
| Thương hiệu | Pedrollo |
| Công suất (HP) | 0.7 mã lực |
| Tậptage | 115 Vôn (AC) |
| Tính thường xuyên | 60Hz |
| Loại chất lỏng | Nước sạch |
| Phạm vi nhiệt độ chất lỏng | -10 °C đến +90 °C (14 °F đến 194 °F) |
| Phạm vi nhiệt độ môi trường | -10 °C đến +40 °C (14 °F đến 104 °F) |
| Max. Manometric Suction Lift | 8 mét (26 feet) |
| Áp suất làm việc tối đa | 10 bar (145 psi) |
| Vật liệu | Stainless Steel (housing, specific components) |
| Phong cách cài đặt | Trên mặt đất |
| Kích thước sản phẩm (D x R x C) | Khoảng 12 x 8 x 8 inch |
| Trọng lượng sản phẩm | 16 pound |
| Mã số UPC | 722777873488 |
8. Bảo hành và Hỗ trợ
Warranty information for your Pedrollo PQm81-Bs pump is typically provided with the product at the time of purchase. Please refer to the documentation included in the product packaging for specific warranty terms and conditions.
For technical support, spare parts, or warranty claims, please contact your authorized Pedrollo dealer or the manufacturer directly. Keep your purchase receipt and product serial number available when seeking support.





