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Electric fire pump emergency start and stop conditions, methods, steps

Author: admin Source: The internet Posted On: 2018/7/11 10:26:36

  Emergency starting and stopping of electric fire pump: Firstly, the selector switch is rotated away from the full stop position. At this time, the corresponding indicator light is on, and the voltage meter has voltage display. Under normal conditions, the voltage is 24-26V. If there is no abnormality, the PLC power circuit breaker can be closed, the switch power indicator light is on, and the RUN indicator on the PLC is on. If the RUN indicator is off, the PLC is faulty. At this time, only the emergency start and stop buttons can be used to operate the device.
  When the RUN indicator on the PLC is on, the system can work.
  electric fire pump emergency start procedure
  (1) When the PLC works abnormally, that is, when the RUN indicator on the PLC is not lit, the motor can be started in an emergency mode.
  (2) Press and hold the green emergency start button, start the power supply to drive the motor to start, and release when the motor starts. If you press and hold the emergency start button for 10 seconds, it will not start, indicating that the device is difficult to start or can not be started, immediately release the hand, find out the cause, and then start the problem after troubleshooting.
  (3) The emergency start fails, the running indicator will still be on, and the emergency stop button must be pressed to reset to prepare for the next start. When the emergency start button is pressed, the PLC will stop working due to power loss.
  Emergency stop step
  (1) When the PLC works abnormally, that is, when the RUN indicator on the PLC does not light, the motor can be stopped in an emergency mode.
  (2) Press and hold the red emergency stop button, the motor will stop immediately and the control system will stop working. The emergency stop button does not reset automatically and needs to be rotated approximately 15 degrees clockwise to reset.
  (3) Only use the emergency stop button to stop after starting with the emergency start button.
  (4) It can also be stopped with the emergency stop button after starting in manual or automatic mode.
  (5) To use the emergency start or emergency stop function, the selector switch must be in the "manual" or "automatic" position and not in the "full stop" position.
  Manual startup steps
  (1) Cut the selection switch to the “manual” and “local” positions, and the “manual” and “local” indicators are on.
  (2) Press the green start button for more than 300 milliseconds and the system starts to start. If it cannot be started within 12 seconds, it will stop automatically. As long as the start is triggered, the button will be relaxed.
  (3) When the selector switch is cut to the "manual" position, the auto start function is disabled.
  Manual stop method
  The "Manual" stop button can be used for startup in non-emergency situations. Press the red stop button for more than 300 ms and the system stops.
  Automatic startup step
  (1) Cut the selection switch to the “automatic” and “remote” positions. The “automatic” and “remote” indicators are on. When the motor is connected to the remote fire alarm signal, the fire alarm indicator lights up and there is an alarm sound. When the setting requirements or the electric fire pump failure are met, the motor pump starts automatically and maintains the fire pressure setting set at 0.80 MPa. When it is necessary to stop, the stop button must be manually pressed to stop.
  (2) If the startup is unsuccessful, the "Startup Failure" indicator lights up. Cut the selector switch to the "full stop" position once, press the stop button for more than three seconds, or press the emergency stop button to reset the PLC before continuing to accept the signal.

     Generally speaking, when an electric fire pump is turned on, it is forbidden to stop. Unless the motor or water pump is burnt, it is to disregard the fire water on site.



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