When the Concrete batching plant host discharge door can not be open, when the stirring was completed discharge lamp does not light.

Analyze the reasons may be: a foreign object or material between the discharge door and the sealing plate; inadequate gas system pressure, leak or damage the cylinder lubricator; wiring between the solenoid valve and the relay off, relay virtual connection or damaged; solenoid coil burning or spool seizure; time relay damage caused PLC without the normal input signal.

Processing concrete mixing station failure is: If a foreign body or material between the discharge door and the sealing plate, should clean the foreign body, the product material and rinse the discharge door; if insufficient pressure gas system, leak or damage the cylinder lubricator , you should check the lubricator, whether fittings, cylinders and other parts damaged; if the wiring between the solenoid valve and relay shedding relay virtual connection or damaged, you should check the relay contact output and wiring, replace if necessary; if the solenoid coil burn loss or spool jamming, replace the solenoid valve; if the time relay is damaged, should be replaced.