17. The mixer and hopper should be cleaned once every four hours to avoid consolidation of residual concrete and prevent normal operation goes smoothly.
18. Each class should release the internal water accumulation of air compressors, air tanks and filters, and eliminate the malfunctions in operation.
19. Butterfly valves, mixers, electromagnetic valves, air filters, and oil mist filters shall be maintained in accordance with the relevant instructions.
20, Check fuel. The amount of oil in the fuel tank should be sufficient. If it is lace of  fuel, the accumulated and filtered fuel should be added.
21. Check the batching plant oil circuit. Open the oil valve on the pipeline, and unscrew the bleeder screw of the fuel injection pump and the oil filter (the available manual pump oil with the hand pump), pull out the air in the oil circuit, and check whether there is oil leakage.
22. Check the cooling water. When the amount of water is lacking, it is necessary to compensate the soft water for cleaning and check whether there is any water leakage.
23, View the mixing plant oil. Pull out the dipstick to check the oil storage. If the oil level is lower than the regulation sign should be added; if the oil level exceeds the regulation sign, the engine oil increase factor should be identified and handled.
24. Manually lubricate the mixing plant. Add lubricating oil to the site where manual lubrication is required.
25, pick up debris in the mixing plant. Look around and above the mixing plant machines. If there is anything or something else, it should be stored.
26, Rolling manually. For a mixing plant that can roll over the crankshaft by manpower, it is necessary to tumbling it before turning on the machine to improve the lubrication conditions in each conflict area and reduce the starting resistance. When tumbling the crankshaft, make the oil control at stop state

• Prev：How to Maintain and Manage the
• Next：Measures to protect machines in