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The ISUZU foam fire truck, as specialized firefighting equipment, excels in its highly efficient foam suppression system. Compared to water tank fire trucks, while retaining the basic water tank structure, it is additionally equipped with key components such as a foam liquid tank, air-foam proportioning system, and foam-water monitor, forming a unique foam firefighting capability. To maximize the effectiveness of these systems, operators must master standardized operating procedures and understand troubleshooting methods for common issues. Below, we will provide a detailed analysis of the professional operation methods for the ISUZU foam tanker fire truck , covering both operational steps and typical troubleshooting approaches.
Operation of the ISUZU Foam Tender Fire Truck
1. Foam Liquid Refilling
There are two methods to refill the foam liquid tank in an ISUZU foam fire engine:
Steps for compressed air transfer:
① Connect the suction tube, air charging nozzle, and tire inflation hose with adapters.
② Start the engine to ensure sufficient air pressure in the truck's air reservoir.
③ Close the foam proportioner and open the foam tank inlet valve.
④ Connect the air hose to the charging nozzle to introduce compressed air into the foam drum.
⑤ The foam liquid is pushed into the foam tank under air pressure.
⑥ Once the drum is empty, immediately shut off the air release valve and foam tank inlet valve to prevent excessive air intake.
2. Foam Firefighting Operations
(1) Internal Foam Suction (Tank Supply)
Foam is drawn from the onboard foam tank via the proportioning system.
Steps:
① Connect hoses, foam guns, or monitors as needed. For medium/high-pressure hose reels, install the dedicated foam attachment.
② Set the foam gun selector to
"mixed solution" or "water" position.
③ Start the water pump (refer to water tank truck operations).
④ Open the pressure water valve leading to the foam proportioner.
⑤ Increase engine throttle to adjust pump pressure based on foam gun/monitor requirements.
⑥ Rotate the proportioner valve to align with the foam gun’s calibrated orifice setting.
⑦ Open the foam inlet valve—the proportioner will continuously draw foam at the set ratio.
(2) External Foam Suction (Drum Supply)
泡沫通过比例器从外部鼓中抽出。
步骤:
① 关闭泡沫罐进料阀,打开T型管盖,将外部吸料管连接到桶体上。
② 打开滚筒的通气孔,然后按照内部抽吸步骤进行。
(3)自吸泡沫(直接喷枪供料)
泡沫枪通过吸管直接从桶中吸出泡沫。
步骤:
① 将软管一端连接到泵出口,另一端连接到泡沫枪。将吸管插入桶内。
② 打开滚筒的通气孔。
③ 将泡沫枪设置为
“吸”
模式并按上述方式进行。
术后: 使用后务必冲洗泵、比例器、泡沫枪和管道。
常见泡沫系统故障及排除方法
五十铃泡沫消防车可能会遇到两个主要问题:
故障类型1:无泡沫排出
可能的原因 |
解决方案 |
① 泡沫比例器关闭 |
① 开放式配料器 |
②水压>0.049MPa,堵塞泡沫吸入口 |
②使用水源<0.049MPa |
③ 泡沫罐排气口堵塞 |
③ 清除堵塞物 |
④ 封闭式充气嘴 |
④ 打开喷嘴 |
⑤ 泡沫管路阀门堵塞/关闭 |
⑤打开阀门或清除堵塞物 |
⑥ 吸料管垫圈松动或损坏 |
⑥ 紧固或更换垫片 |
故障类型2:泡沫质量差
可能的原因 |
解决方案 |
① 配比器设置不匹配 |
① 调节阀门至额定孔口 |
② 喷枪/监控器进气口堵塞 |
② 清洁进料口 |
③ 泡沫筛网损坏 |
③ 修理/更换屏幕 |
④ 降解的泡沫液 |
④ 更换为认证泡沫 |
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