1. Â Â Â Inhalation method:
(1) Â Â Â Preparation before inhalation
A. Close the back door; B. Observe whether the vacuum oil separator oil is correct.
(2) Â Â Â Operation sequence
A , Â Â Depress the clutch pedal, push the power box lever, make the suction pump vacuum pump run, and then slowly release the clutch pedal;
B , Â Turn on the alarm switch (in the cab);
C, the hand throttle lever is pulled to the maximum position, observation tachometer, to make 500-600 rev / min (has been adjusted at the factory);
D , Â Put the four-way valve switch handle lever into the suction position, check whether the air discharged from the trachea is correct, whether the vacuum pump operates abnormally, and whether the vacuum gauge is normal.
E. Remove the suction hose from the vehicle and put it into the sinking well, and make the suction hose straight or free-bend. The parking position should be fully considered.
(3) Â Â Â Homework notes:
A , Â Contaminants such as stones, cotton yarn, and leaves larger than 50 mm will clog the straw, so do not inhale and remove it often;
B. Observe the vacuum gauge reading to 65-80 kPa. Completely open the suction ball valve. The half-open condition will easily damage the valve core.
C , Â When inhaling the sludge, you should always move the pipette. When inhaling high-viscosity sludge, inhale air and water occasionally to improve efficiency.
2. Â Â Â Wastewater discharge method:
After the separation of the mud and water, open the drain ball valve and repeat the suction after removing the sewage, and pressurize and drain quickly. The operation method is as follows:
(1)    Place the four-way valve shift lever in the “neutral†position, and then place the drain ball valve in the “on†position to reliably drain the sewage by gravity;
(2) Â Â Â When the four-way valve is switched to the discharge position, and the vacuum pump continues to work, the compressed air discharged into the tank will be quickly discharged;
(3) Â Â Â When the pressure is drained, the discharge ball valve should be opened before the four-way valve can be moved to the discharge position, so as to avoid excessive pressure in the tank, accidents and affecting the sealing of the tank door.
3 , sludge discharge method:
(1) Depress the clutch, toggle the pneumatic reversing valve to the "open" position (liberation) or push the power-take-box control lever (east wind) to operate the oil pump;
(2) Â Â Â Open the ball valve of the tank door, discharge part of the sewage, and reduce the pressure in the tank to make it open to the atmosphere;
(3) Â Â Â Loosen the tank door locking device, loosen the handle and completely remove the screw;
(4)    Open the open/closed lever of the manual reversing valve to “openâ€. Before opening, make sure that the pressure in the tank is equal to atmospheric pressure. If the tank door is opened under negative pressure, the seal ring and cylinder of the tank door will be damaged;
(5) Â Â Â Turn the manual valve's tipping valve stem into the "open" position (see operation indicators);
(6)    Restoration operation after sludge discharge: Place the rear door cylinder operating lever in the “locked†position. After the safety is lowered, check the following:
A , Check the tank door flange and sealing ring with dirt, and brush it clean with a brush;
B , Place the tank door opening/closing bar “closed†and safely close the door leaf;
C , Insert the clamping device screw into the pot side screw hole and turn the handle until the rear tank door is tight.
4. Precautions
(1) Â Â Â Keep the proper number of revolutions of the vacuum pump:
   Vacuum pump speed is too high, the rotor heating is increased; speed is too low, it will cause engine knock, parts cause additional shocks, affecting the life, the appropriate working speed, pre-adjust the maximum throttle position of the hand throttle.
      Pump Type XD-63
      Appropriate rotation 500-600 rev / min
(2) Â Â Â Turn pot on flat ground
Sewage suction trucks are forbidden to lift and lift hydraulically on inclined roads. If they are lifted by hydraulic lifting on an inclined road surface, the weight of the car body will be tilted to a point due to uneven road surface, which will cause the parts to be distorted and easily cause rollover accidents.
(3) Â Â Â Open the rear door and window when turning the tank
Before opening the dumping tank, the rear door should be opened. Do not close the door and turn the tank. There is a danger of overturning due to the center of gravity.
(4) Â Â Â When the clutch oil pump power take-off box and vacuum pump power take-off box are engaged, the engine idles, and the clutch pedal is fully depressed, and the clutch pedal is slowly raised when the clutch is engaged;
(5) Â Â Â Pay special attention when driving the car: Take the lever control lever in the middle position;
(6) Â Â Â Do not use this vehicle to inhale and transport waste oil and hazardous materials;
(7) Â Â Â When the sludge tank is raised and enters the tank bottom or maintenance, support rods and safety stops must be used;
(8) Â Â Â When transporting sewage, it is necessary to use a hand-door door clamping device. Since there is no anti-wave plate in the tank and the center of gravity is high, the vehicle must be driven at a moderate speed and a slow speed, and the vehicle must not make a sharp turn and brake.
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