Analysis of the reasons why the electric flexible smoke barrier fireproof cloth cannot be lowered
The electric smoke barrier is a smoke prevention system composed of a reel, fireproof cloth, controller and other components. It achieves smoke prevention and storage functions by lowering the fireproof cloth to a specified position. The controller plays a core role in the smoke barrier system: 1. Receive smoke detector signals; 2. Send work instructions; 3. Send and receive fire control room instructions; 4. Feedback information, etc.
The lower right corner is the controller
The electric smoke barrier is an intelligent smoke prevention and storage product. If the fireproof cloth cannot be lowered during work, it may be due to the following reasons:
A. The controller is faulty; B. The motor is faulty; C. The fireproof cloth is stuck, etc.
Introduction to the causes and detection methods of electric flexible smoke barrier controller:
(1) Main power failure. Detection method: Turn on the main power supply, check whether the controller enters the working state, then disconnect the power supply, observe and record whether the controller sends out audible and visual signals for fault warning within 60 seconds, and observe the display status of the controller when simulating fire linkage state.
(2) The fire smoke detector connection is open circuit. Detection method: After connecting the main power supply, the controller enters the working state. After disconnecting the smoke detector connection line, check whether the controller sends out a fault sound and light signal within 60 seconds. At the same time, observe whether the device in the simulated fire control room receives the controller signal. .
Control box wiring diagram
(3) Backup power supply failure. Turn on the main power controller to start work, then disconnect the backup power supply, observe whether the recording controller sends out audible and visual signals within 60s, and observe whether the equipment simulating fire linkage also receives the signal; connect the backup power line to (rated voltage (less than 85%) of the power shortage backup power supply, observe and record the display status of the controller and simulated fire linkage device.
(4) The limit device has an open circuit failure. Also turn on the main power supply to put the controller into working condition, disconnect the limit wiring, observe whether there is a fault signal from the controller within 60 seconds, whether the signal is sent to the fire linkage control equipment, record and analyze the above situation.
