I. Main motor of the mixer can’t be started

Fault phenomenon

Press the start button of the mixer on the console, the mixer does not start

Reason Analysis of concrete mixing plant 

1. The detecting protection switch of the mixer and the key-locked emergency stop switch of the main motor are not connected.

2. The emergency stop switch on the console is not reset.

3. The power switch of the main motor is not connected.

4. The main motor stop signal must be reset.

Solution of concrete mixing plant

1. Check whether the turn on signal of the detecting protection switch of the mixer is sent to the PLC.

2. Check whether the emergency stop switch on the console is reset.

3. Check whether the power switch of the main motor is connected.

4. Check whether the main motor stop signal is reset.

II. In the automatic production process, the batcher does not discharge the aggregates after weighing finished

Fault phenomenon:

In the automatic production process, one or several kinds of aggregates were weighed and held in the measuring hopper without discharging ,and the system stop running.

Reason Analysis of concrete mixing plant

1. The hopper door is not closed in position.

2. There is not output signal of discharging in the weighing instrument .

3. The fine aggregate weighing door is not closed in position.

4. Aggregates must define the discharging order.

Solution of concrete mixing plant

1. Check whether the hopper valve is sticking material or the door is not closed in position. After the door is closed in position,

2. Check whether there is output signal of discharging in the weighing instrument.

3. Check whether the belt conveyor is started.

4. Check whether the fine aggregate weighing door is closed in position.

5. Check the window of the computer , to see whether the discharging order of the aggregates is defined.

III. The inclined belt conveyor can’t be started

Fault phenomenon:

After the mixer is started normally, press the start button on the console, and the inclined belt conveyor does not start.

Reason Analysis

1. The mixer is not started .

2. The detecting protection switch of the inclined belt is not reset.

3. The power switch is not connected.

4. The stop button switch is not reset.

5. The washing machine button is not reset

Solution

1. Check whether the detecting protection switch of the inclined belt is reset.

2. Check whether the power switch is connected.

3. Check whether the stop button switch is reset.

4. Check whether the washing machine button is reset.

Related reading: Ready Mix Concrete Mixing Plant dry mix concrete mixing plant