1.The installation must be stable and solid concrete mixer,tires must remove the overhead or otherwise custody and must erection rain rain,smashing or insulation work shed. Operating locations keep clean,Pengwai should dig located exclude mechanical wastewater settling tank cleaning.

2.Concrete mixer power wiring must be correct,there must be reliably protected by zero (or protective earth) and leakage protection switch,wiring and insulation must meet the requirements ministries.(The electrician)

3.The operation drivers must be trained and pass an examination to obtain operating permits are prohibited non-driver operation.

4.The driver must be clean,tighten,lubricate,adjust,corrosion Cross working method,each time for serious concrete mixer parts Maintenance.

5.Each time the work began,should examine carefully the various parts for anomalies. Should be checked before starting clutch,brake and various protective devices are sensitive and reliable,rope without damage,tracks,pulleys is good,the body is balanced,surrounded by accessible,sure no problem,the order closing the test machine.2 to 3 minutes commissioning,drum rotation balance,no beating,no deviation,in normal operation,no abnormal sound,then the official production operations.

6.After the machinery running,the driver must be thinking focus,stick to their posts,not AWOL.And shall always pay attention to the functioning of the machine,if found irregularities or hear unusual sounds,the material must be kept barrel release,shut down for maintenance.

7.Mixer in operation,repair and maintenance is strictly prohibited and not allowed out into the barrel with a tool Grilled material.

8.When the material must not exceed the specified prohibited overload.

9.When the hopper upgrade work is prohibited in the hopper below or passage.Need to clean the hopper pit drought,must first contact with the driver until the hopper with safety hooks for hanging firmly behind the prospective conduct.

10.When the overhaul mixer, must cut off the power, for entering the drum overhaul, there must be "someone is working, DO NOT TURN ON" nameplate hung at the gates box, and a manned, to be absolutely guaranteed to avoid mistakenly sent a power accident.

11.After production has stopped, a timely scrub clean the inner and outer tube to prevent concrete bonding, after work, will be promoted to the top position hopper with safety hooks for hanging prison. Before leaving the field to pull down the gates and lock gates box.