- Pre-check of the vehicle: Before delivering and mixing concrete, ensure sufficient levels of fuel, lubricating oil, hydraulic oil, brake fluid, and cooling water. The quality of these fluids must meet the required standards.
- Power output system: Check the power output system and confirm there are no loose bolts or oil leakage from bearings.
- Load capacity: The concrete load must not exceed the rated capacity of the
. - Startup procedure: Before starting the mixer truck, place the drum operation handle in the “stop” position. Once the engine starts, allow the drum to rotate at a low speed for about 10 minutes to raise the hydraulic oil temperature to above 20°C before operation.
- Before loading: Reverse the drum before loading to remove any accumulated water and debris to ensure the quality of the concrete.
- Loading process: Set the control lever to the “loading” position and adjust the drum speed to ensure smooth loading.
- During transportation: Ensure the chute is securely placed to prevent it from swinging, which could harm pedestrians or affect other vehicles.
- Mixing drum speed: When transporting mixed concrete, the drum speed should be between 2-10 RPM to prevent segregation and maintain quality. On flat roads, the speed should be 2-3 RPM. If driving on roads with a slope greater than 15 degrees or roads with significant side-to-side movement, stop the drum rotation until road conditions improve, then resume rotation.
- Delivery time: The time for delivering concrete must not exceed the mixing station’s specified time. During transport, the drum must not remain stationary for extended periods to prevent the concrete from segregating or hardening in the drum. Drivers should monitor the concrete condition regularly and report any issues to dispatch for further instructions.
- Changing drum direction: When switching the drum from forward to reverse, first place the control lever in the neutral position. After the drum has stopped, move the handle to the reverse position.
- Discharging concrete: Before discharging, the drum should rotate at 10-12 RPM for 1 minute to ensure thorough mixing before release.
- Continuous operation: The mixer should not run continuously for more than 8 hours.
- Post-operation cleaning: After completing the work, clean the interior of the drum and the truck body. Do not allow any remaining concrete to harden inside the drum.
- Water tank maintenance: Ensure the water level in the tank is maintained at a normal level. In winter, drain the water from the tank and the water supply system when the truck is parked to prevent freezing.
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