
ISUZU fire trucks are widely recognized in the global firefighting industry for their reliability, efficiency, and adaptability. As the core component of a fire truck, the performance of the fire pump directly impacts firefighting efficiency. ISUZU fire trucks are typically equipped with various pump models, such as CB10/20, CB10/30, CB10/40, CB10/60, CB10/80, and CB10/100, to meet different firefighting scenarios. This article provides a detailed introduction to the applicable vehicle models, working principles, and maintenance methods for these fire pumps, helping users better understand and operate ISUZU firefighting trucks.
1. Common Fire Pump Models for ISUZU Fire Trucks and Applicable Vehicle Types
ISUZU fire trucks are equipped with fire pumps of different specifications based on load capacity and functional requirements. Common models include CB10/20, CB10/30, CB10/40, CB10/60, CB10/80, and CB10/100, where the numbers represent the pump's flow rate (L/s) and pressure (bar). For example, CB10/40 indicates a flow rate of 40 L/s and a pressure of 10 bar.
• CB10/20, CB10/30: Suitable for light-duty ISUZU fire trucks (e.g., ISUZU NKR or NQR fire vehicles), primarily used for community firefighting and small-scale fire suppression.
• CB10/40, CB10/60: Commonly found in medium-duty ISUZU fire trucks (e.g., ISUZU FTR or FVR fire engine), suitable for urban firefighting, industrial zone fire suppression, and other high-demand tasks.
• CB10/80, CB10/100: Mainly used in heavy-duty ISUZU fire trucks (e.g., ISUZU GIGA firefighting trucks), designed for large-scale fires, airport firefighting, and other high-flow scenarios.
Main parameters for fire pump:
Model |
Work condition |
Flow rate (L/S) |
Outlet pressure (Mpa) |
Rated speed (r/min) |
Power (KW) |
Suction depth (m) |
CB10/20 |
1 |
20 |
1.0 |
3135±50 |
34 |
3 |
2 |
14 |
1.3 |
3440±50 |
35 |
3 |
|
3 |
10 |
1.0 |
3059±50 |
22 |
7 |
|
CB10/30 |
1 |
30 |
1.0 |
3010±50 |
48 |
3 |
2 |
21 |
1.3 |
3340±50 |
52 |
3 |
|
3 |
15 |
1.0 |
3000±50 |
34 |
7 |
|
CB10/40 |
1 |
40 |
1.0 |
3080±50 |
60 |
3 |
2 |
28 |
1.3 |
3360±50 |
61 |
3 |
|
3 |
20 |
1.0 |
2990±50 |
39 |
7 |
|
CB10/60 |
1 |
60 |
1.0 |
3200±50 |
102 |
3 |
2 |
42 |
1.3 |
3475±50 |
106 |
3 |
|
3 |
30 |
1.0 |
3130±50 |
73 |
7 |
|
CB10/80 |
1 |
80 |
1.0 |
3400±50 |
137 |
3 |
2 |
56 |
1.3 |
3500±50 |
130 |
3 |
|
3 |
40 |
1.0 |
3130±50 |
83 |
7 |
|
CB10/100 |
1 |
100 |
1.0 |
2270±50 |
149 |
3 |
2 |
70 |
1.3 |
2320±50 |
138 |
3 |
|
3 |
50 |
1.0 |
2050±50 |
115 |
7 |
These fire pumps adopt a centrifugal design, offering high efficiency, stability, and durability, meeting the operational needs of various ISUZU fire engines.
2. Working Principle of Fire Pumps
The fire pumps installed in ISUZU fire trucks are typically centrifugal pumps, which operate based on centrifugal force. When the engine drives the pump shaft to rotate, the impeller spins at high speed, causing water to flow rapidly within the pump casing. Due to centrifugal force, water is pushed outward, forming a high-pressure stream that is delivered through the outlet to fire hoses or nozzles.
The advantages of centrifugal pumps include high flow rates, stable pressure, and suitability for prolonged continuous operation. Additionally, ISUZU fire pumps are often equipped with vacuum-assisted systems, enabling quick water intake from sources such as hydrants, reservoirs, or natural water bodies to improve response times. Some advanced models also support multi-stage pumping, allowing pressure and flow adjustments based on firefighting needs to maximize efficiency.
3. Daily Maintenance for Fire Pumps
To ensure the long-term stable operation of ISUZU firefighting trucks, regular maintenance of the fire pump is essential. Key maintenance practices include:
(1) Regular Seal Inspections
Sealing components (e.g., mechanical seals, O-rings) can wear out over time, leading to leaks or pressure drops. After each use, inspect the pump body for leaks and replace seals periodically.
(2) Lubrication of Bearings and Transmission Components
The bearings and drive shaft of the fire pump require regular lubrication to reduce friction and wear. It is generally recommended to perform lubrication every 500 operating hours or every six months.
(3) Preventing Pump Freezing (Winter Maintenance)
In cold climates, residual water in the pump may freeze, causing cracks. After use, drain all water from the pump or add antifreeze for protection.
(4) Regular Performance Testing
Conduct a fire pump performance test every three months to verify flow rate and pressure. If abnormalities are detected, promptly repair or replace worn parts.
4. How to Choose the Right ISUZU Fire Pump?
When selecting a fire pump for an ISUZU fire truck, consider the following factors:
• Firefighting Requirements: Small-scale community firefighting may require CB10/20 or CB10/30, while large industrial zones or airport firefighting demand high-flow pumps like CB10/80 or CB10/100.
• Chassis Load Capacity: Light-duty ISUZU NPR chassis are suitable for small pumps, whereas heavy-duty ISUZU GIGA chassis can accommodate high-flow pumps.
• Water Source Conditions: If the water source is distant or has low pressure, opt for a high-suction fire pump with a vacuum-assisted system.
ISUZU fire engine trucks, with their excellent mobility and reliable fire pump systems, are vital assets for fire departments worldwide. Understanding the characteristics, working principles, and maintenance methods of different fire pump models helps improve operational efficiency and extend the service life of fire trucks. Whether it’s a light-duty, medium-duty, or heavy-duty ISUZU fire truck, selecting the right fire pump and performing proper maintenance ensures optimal performance in critical situations, safeguarding lives and property.
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