Best to pump 0.5-1 cubic meters of mortar first, and completely discharge it. Then stop the machine, switch the plate valve, and remove the pressure from the accumulator.
Water flushing and air blowing. Regardless of whether you're using water to flush or air to blow, the valve box and hopper need to be cleaned.
Place the wet cement bags and cleaning balls into the cone tube. Connect the tube to the pipeline.Close the door. Fill the hopper with water and ensure that the water keeps flowing. Continue pumping water until the cleaning ball appears from the concrete pump pipe's front side.
Start by putting the wet cleaning ball into the air blowing joint. Then, attach it to the first straight concrete pipe connected to the
reducer. Finally, connect the end of the pipeline to a safety cover, making sure the hole in the cover is facing down.
Control the pressure of compressed air not to exceed 0.8MPa, and slowly open the air valve. The air valve should be full
opened only when the concrete can flow smoothly. After completing the air blowing, close the air valve immediately.
During the final stage of water flushing, it's crucial to prevent water from flowing towards the concrete pouring area, as it may affect the quality of the concrete.
Air blowing requires an air compressor and strict operation according to regulations. Good sealing of the pipeline is required.
Construction personnel should maintain a safe distance from the outlet direction to prevent aggregates or cleaning balls from ejecting and causing potential injuries.
