FAW Vacuum Sewage Suction Truck Cesspool Septic Tank 8,000L

Vacuum Sewer Truck FAW

 FAW 8cbm vacuum sewer truck manufacturer
 FAW 4x2 RHD signle cab chassis truck mounted 8cbm sewer pump tanker, condition new, 4170mm wheelbase, Weichai 165HP Euro 2 dieseI engine, CA6TB085 manual 6-speed transmission, 10.00R20 raidal tires, with one spare tire, 5 ton front axle, Ф435 model 13 ton rear axle, full air brake, power assist steering, etc.
Model: DRZ5160XWCA
Capacity: 8,000 liters
Drive: 4×2
Engine power: 165 HP
Engine type: WEICHAI

FAW 8Ton Sewer Septic Truck unit is mounted on a FAW 4×2 Sleeper Cab. The tank volume of the sewage suction truck is 10,000L, made of Q235 carbon steel. Equipped with Italy BP vacuum pump, flow capacity 5,300 LPM. The Vacuum Sewer Truck FAW is with self-unloading function, and the back cover is hydraulically opened. FAW Gross Vehicle Weight 16 Ton Sewer Septic Truck adopts German craftsmanship, technology, and standards, combined with the actual working conditions, and uses electronically controlled single pump technology, which has good oil adaptability and excellent low-temperature start-up performance.

A septic system is designed to treat wastewater from a home or building that is not connected to a public sewer system. It is usually made of concrete or fiberglass and buried underground on the private property. Waste and wastewater from the building flow through the drain system into the septic tank and is held in the tank as solids to settle to the bottom and oils and grease to float to the top. The middle layer of wastewater, or liquid effluent, flows out of the tank toward a drain field, where it percolates through perforated pipes and is absorbed into the surrounding soil. Granted, this is the general principle in a traditional septic system. There are many varieties, and the septic professionals at Rooter Man can inspect and identify your particular system.

The structures of vacuum sewage truck includes: cab chassis, carbon steel sewage tank body, hydraulic back door, door locks, vacuum pump, separator, four-way valve, oil gas separator, ball valve, hydraulic discharge cylinder, visual window, etc.   

How to Operate a FAW Vacuum Sewage Truck: Complete Step-by-Step Guide

A FAW vacuum sewage truck is a specialized sanitation vehicle that uses a high-power vacuum pump to suck sewage, sludge, and septic waste from tanks and sewer lines, then transport and discharge it safely. When operated correctly, it handles septic pumping, sewer maintenance, and industrial waste collection with high efficiency and a long service life. This guide walks you through the full operating procedure — from suction preparation to sludge discharge and shutdown.

What Is Septic Pumping?

A septic system is reliable, but it cannot empty itself. The septic tank can only hold so much sludge and wastewater before it must be pumped out. Septic tank pumping means bringing in a specialized truck fitted with a vacuum pump and suction hose to remove the bulk of the settled sludge and floating scum from the tank. The FAW vacuum sewage truck does exactly this: it creates negative pressure inside the tank, draws the waste up through the hose, separates liquid from solids on board, and discharges each fraction in the correct way.

1. Suction Operation — Preparation

Before starting the vacuum pump, confirm two safety items:

• A. Keep the rear door of the sewage tank firmly closed. A tight seal is essential for building vacuum.

• B. Check the vacuum pump gas-oil separator. Make sure it is lubricated and running normally. Low oil level or abnormal noise will damage the pump.

2. Suction Operation — Sequence

Follow these steps in order (refer to the machine's control diagram):

• A. Engage the PTO. Press the clutch pedal, move the PTO box joystick to the engaged position to take power from the truck engine and start the vacuum pump, then slowly release the clutch.

• B. Turn on the safety alarm located in the cab.

• C. Set engine speed. Adjust the hand throttle to the recommended position so the tachometer reads 500–600 r/min (this is preset at the factory).

• D. Select suction mode. Move the four-way valve to the SUCTION (RIGHT) position. Watch the exhaust air, listen to the vacuum pump, and monitor the vacuum gauge.

  Important note: The vacuum pump is designed for pump-in only. Pump-out through the vacuum pump is strictly forbidden. Use the four-way valve and dedicated discharge path for emptying the tank.

• E. Lower the suction hose. Park the truck so the hose stays straight or gently curved — avoid sharp bends. Connect one end of the suction hose to the suction valve and place the other end into the sewage pool.

3. Working Cautions During Suction

• A. Keep debris out. Objects larger than 50 mm — stones, cotton waste, leaves, rags — will clog the suction pipe. Do not suck these materials, and keep the hose clean and unobstructed.

• B. Run the valve fully open. When the vacuum gauge reads 65–80 kPa, keep the suction valve fully open. A half-open valve can be damaged by suction flow.

• C. Move the hose continuously. Frequently move the suction inlet around the tank. Drawing in some air along with the liquid improves efficiency, especially when the sewage is very viscous.

4. Wastewater Discharge

After sludge and wastewater separate inside the tank, open the drain valve to release the water and prepare for the next load. Discharge can be done by gravity (recommended) or by pressure (faster, but not recommended).

• A. Gravity discharge (recommended). Set the four-way valve joystick to the neutral/non-working position, then open the discharge valve fully so all wastewater drains out by gravity.

• B. Pressure discharge (not recommended). Keep the four-way valve in the discharge position so the vacuum pump continues running, forcing compressed air into the tank to push the wastewater out quickly.

• C. Pressure-safety order. When discharging under pressure, open the discharge valve first, then move the four-way valve to the discharge position. This prevents the tank from over-pressurizing, which could cause an accident or damage the rear-door seal.

5. Sludge (Mud) Discharge

Sludge is unloaded through the rear hopper door. Follow this sequence:

1. Start the hydraulic system. Press the clutch and engage the air-operated valve / PTO joystick so the oil pump runs.

2. Equalize pressure. Release a little wastewater through the rear-door clamping-device valve so inside and outside pressure are equal.

3. Release the rear-door clamps. Open the clamping device, loosen the handgrips, and completely remove the screws.

4. Open the rear door. Operate the manual valve to open the door. Confirm inside and outside air pressure are equal first — unequal pressure can tear the door seal or damage the oil cylinder.

5. Tip the tank. Move the manual valve joystick to the DECLINE position to lift the tank and dump the sludge.

Recovery After Discharge

Once the tank returns to the horizontal position:

• A. Inspect the door flange and seal ring, cleaning off any mud or debris.

• B. Close the door. Move the manual valve joystick to the CLOSE position.

• C. Re-lock the clamps. Operate the rear-door clamping device until the door is fully and firmly closed.

FAQs About FAW Vacuum Sewage Trucks

Q: Can the FAW vacuum truck pump out by reversing the vacuum pump?No. The pump is for suction only. Use gravity discharge or compressed-air discharge through the four-way valve.

Q: What vacuum reading is normal during pumping?A steady gauge reading around 65–80 kPa with the suction valve fully open is the normal working range.

Q: How often should the tank be pumped at a typical septic site?It depends on tank size and waste volume, but operators should pump when the sludge layer reaches roughly one-third of the tank depth — never wait until the tank is completely full.

Conclusion

Operating a FAW vacuum sewage truck safely comes down to three habits: seal and lubricate before suction, keep the valve open and the hose moving, and equalize pressure before opening the rear door. Follow these steps and the truck will deliver reliable performance for septic pumping, sewer cleaning, and waste collection year after year.

Need a quote on a FAW vacuum sewage truck configured for your export market? Contact our team for the latest chassis, engine, and tank-capacity options.