Precast concrete plant, usually sudden interruption of the pumping system action, and there is abnormal sound, the device has a strong vibration, but no corresponding pipe vibration.
Remedy: Pour grout into the hopper, repeated forward and reverse start the pump, forcing the passage open. If this method is not dare, only artificial exclusion, remove the connecting tube, remove the valve debris.
Blockage at the inlet Inlet blockage, usually pumping action and hydraulic systems were normal, no abnormal sound and concrete mixer machine, the hopper has a larger aggregate or agglomerate, stuck at the inlet or arched.
Remedy: Reverse operation of the pump in order to destroy the caking of the concrete hopper back again stirring, then the forward pumping. If you do not work, you need to manually clean up, be excluded.
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