Concrete Plant Common Fault and Treatment

First, the main motor mixer Kai fixed

Symptom:

Press the start button operating table mixer, the planetary concrete mixer does not start.

Cause Analysis:

1, the compressor does not start or does not meet the gas supply system pressure

2. stirred-protect switch on the host access and host with a key emergency stop switch is not turned on.

3. the operation of the emergency stop switch stage is not reset.

4. host power switch is not turned on.

5. the host stop signal must be reset.

Process:

1. Check the air detection signal (greater than 0.4MPa pressure signal) is sent to the PLC, that is, whether there is a signal I8.0. As I8.0 no signal, check the compressor pressure is greater than 0.4MPa, when the pressure reaches 0.4MPa or more, I8.0 still no signal, then check the pressure gauge adjustment is normal or damaged, until there I8.0 signal.

2. Check the mixing console overhaul protect switch on signal is sent to the PLC

3. check the operating table of the emergency stop switch is reset

4. Check the mains switch is turned on

5. Check whether the stop button to reset the host

Second, in the automated production process, aggregate batching station, said no good after discharge

Symptom:

In the automated production process, one or more of the aggregate weighing hopper within said Fortunately, no discharge, the system stops running.

Cause Analysis:

1. to be closed hopper in place.

2. weighing instrument does not discharge the output signal.

3. the belt is not started.

4. known as fine aggregate, said the door is not in place.

5. the aggregate must be defined discharge order.

Process:

1. check whether the card is to be expected doo feed or closing the valve in place, put in place after the close, I6.7 has a signal.

2. check whether the discharge aggregate weighing instrument output signal, stone unloader I0.4, stone 2 unloading I0.7, sand unloader I1.5, 2 unloading sand I1.2.

3. Check belt is started.

4. Check the fine aggregate, said the door is closed in place, a fine stone, said closing I8.2, stone 2 fine, said closed I8.3, sand a fine, said closing I8.5, 2 fine sand called closed I8.4.

5. check the computer interface, aggregate unloading sequence is defined.