Concrete pump truck malfunction:
Concrete pump truck judgment and elimination of pipe blockage phenomenon
Phenomenon and reasons:
1. When the positive pump is working, hold pressure, and the reverse pump is working normally;
2. During the operation of the positive pump, the pressure is held and the main system pressure reaches a maximum of approximately 31.5Mpa;
3. When the positive pump is pressurized, the position at which the main oil cylinder stops is random;
Emergency elimination methods:
1. Straighten the boom, use a reverse pump to pull the concrete back, and then perform a forward pump operation several times. Minor blockages can be eliminated in this way.
2. When the pipe is severely blocked, it is necessary to reverse the pump to extract all the concrete, then use a hammer to tap the pipe to determine the location of the blockage, and then dismantle and remove the pipe. (Note: When dismantling the conveying pipeline, it is necessary to reverse the pump, otherwise the pressure concrete will splash and injure people)
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