Common fault causes and treatment methods of computer room security system

The equipment room attaches great importance to security. It often manages and maintains the automatic fire alarm system. The automatic fire alarm system is an advanced fire-fighting technical facility. The management of archives and data, the problems frequently encountered in the use of trigger devices and the elimination and alarm devices The inspection, power supply inspection, and the normal operation of the linkage control system can fully play a role in fire prevention and extinguishment to ensure the safe operation of the equipment room. The following are the common failure causes and treatment methods of the six security systems.

Automatic fire alarm system

The function of the automatic fire alarm system. When a fire occurs, the detector transmits the fire signal to the alarm controller, which is represented by the sound and light signal, and displays the location of the fire on the control panel, thereby achieving the purpose of predicting the fire, and at the same time, The manual alarm function can be completed by the manual alarm button.

1, system composition

(1) Manual alarm device: manual alarm button.

(2) Control device: smoke detector, temperature detector, flame detector.

(3) Alarm detector: regional alarm, centralized alarm, control center alarm.

2, the system is prone to problems, the causes, simple processing methods

(1) Line failure

Cause: The insulation layer is damaged, the joint is loose, and the ambient humidity is too high, causing the insulation to drop.

Treatment method: Check the insulation degree with the watch, check the joint condition, and use the welding, plastic sealing and other processes when wiring.

(3) Detector false alarm, detector fault alarm

Cause: The ambient humidity is too large, the wind speed is too large, the dust is too large, the mechanical vibration, the detector is used for too long, and the device parameters are lowered.

Treatment method: Select the detector with appropriate sensitivity according to the installation environment. When installing, avoid the channel with large air outlet and high wind speed, check regularly, clean and replace the detector according to the situation.

(4) Manual button false alarm, manual button fault alarm

Cause: The button has been used for too long, the parameters have dropped, or the button has been damaged.

Treatment method: Regular inspection, timely replacement of damage, so as not to affect the system operation.

(5) Alarm controller failure

Cause: The damage of the mechanical device itself or the external detector or manual button caused the alarm controller to report a fault and report a fire alarm.

Treatment method: Use the table or its own diagnostic program to judge the machine itself, troubleshoot, or press (1) (2) to check whether the fault is caused by the outside world.

Smoke control system

The system consists of a smoke exhaust valve, a manual control device, a smoke exhauster, and an anti-smoke control cabinet. When the main function of the system is fired, the smoke control cabinet receives a fire signal and issues an instruction to open the smoke exhauster. Exhaust smoke can also be manually operated by manual control device to complete the smoke exhaust function, the problems that the system is prone to, the causes, and simple treatment methods:

(1) The exhaust valve cannot be opened

Cause: The exhaust valve controls the mechanical failure, the electromagnet does not move or the mechanical rust causes the exhaust valve to fail to open.

Treatment: Always check whether the operating mechanism is rusted, whether there is any jamming, and check if the electromagnet is working properly.

(2) The exhaust valve can not be opened manually

Cause: The manual control device is stuck or the tension line is loose.

Solution: Check the manual operating mechanism.

(3) The smoke exhauster does not start

Cause: The device of the smoke control system is out of order or the connection is loose or mechanically faulty.

Treatment: Check the mechanical system and the connection of each device system in the control part.

Automatic sprinkler system

When the main function system of the system is in normal working condition, there is a certain pressure of water in the pipeline. When there is a fire, when the temperature of the fire reaches the temperature of the closed nozzle, the glass bubble is broken, the nozzle sprays water, and the water in the pipeline is static. It becomes dynamic, the water flow indicator moves, and the signal is transmitted to the fire control cabinet of the fire control center for alarm. When the wet alarm device alarms and the pressure switch operates, the spray pump is started to supply water to the pipeline through the control cabinet to complete the fire extinguishing function of the system. Closed nozzle, water flow indicator, wet alarm valve, pressure switch, steady pressure pump, spray pump, spray control cabinet. The following are the problems that are easy to occur in the system, the causes, and the simple processing methods:

(1) The linkage signal is sent and the spray pump does not operate.

Cause: The connection between the control unit and the fire pump starter cabinet may be loose or the device may be malfunctioning, or the spray pump itself may be mechanically faulty.

Solution: Check each connection and the pump itself.

(2) The voltage regulator is frequently activated

Reason: Mainly there is leakage at the front end of the wet device, there will be leakage of the plumbing parts or joints, leakage of the closed nozzle, and the end discharge device is not closed.

Treatment: Check each plumbing, nozzle and end venting device to find the leak point for disposal.

(3) After the nozzle is actuated or the end venting device is opened, the front end of the pipe is not connected after the pump is linked

Cause: The butterfly valve, which is mainly a wet alarm device, does not operate, and the wet alarm device cannot send water to the front end pipe.

Solution: Check the wet alarm device, mainly the butterfly valve, until it is flexibly turned over, and then check the other parts of the wet device.

(4) The water flow indicator does not report the signal after the water flow

Reason: In addition to the problem of electrical lines and terminal crimping, it is mainly the problem of the water flow indicator itself, including the movement of the blade, the damage of the blade, the damage of the micro switch or the burning of the reed switch, or the permanent magnet does not work.

Solution: Check if the pad is damaged or stuck, and check the permanent magnet, reed switch and other devices.

Hydrant system

The main function of the system is that the hydrant system pipeline is filled with pressurized water. If the system has a slight leak, the pressure pump or the surge tank can be used to maintain the water and pressure of the system. When the fire occurs, first open the fire hydrant box, connect the interface and water belt as required, point the water gun at the fire source, open the fire hydrant valve, and immediately spray the water gun. When the fire hydrant button is pressed, the fire pump is started to the pipeline through the fire hydrant. Water supply. The system consists of fire pump, constant pressure pump (or surge tank), fire hydrant box, fire hydrant valve, interface water gun, water belt, fire hydrant alarm button, fire hydrant system control cabinet, system easy problems, causes, simple treatment methods :

(1) Open the fire hydrant valve without water

Cause: There may be a leak in the pipe, the pipe is waterless, and the pressure gauge is damaged, and the voltage regulator system does not work.

Treatment method: check the leak point, pressure gauge, repair or install the voltage regulator to ensure that the fire hydrant has water.

(2) Press the manual button, the fire pump cannot be started

Cause: The manual button wiring is loose, the button itself is damaged, the linkage control cabinet itself is faulty, the fire pump startup cabinet is faulty or the connection is loose, and the fire pump itself is faulty.

Treatment method: Check the wiring of each equipment, the device itself, check whether the electrical and mechanical parts of the pump are faulty and eliminate them.

Fire accident broadcast and intercom system

The main functions of the system are completed. After the fire guards get the fire, they can use the power hua to talk with the fire zones to understand the fire situation, to deal with the fire accidents, and also notify the relevant personnel to take appropriate measures to evacuate through the broadcast. Amplifiers, speakers, switching modules, fire broadcast control cabinets, prone to problems and causes and simple handling:

(1) Individual parts are broadcast silently.

Cause: The speaker is damaged or the cable is loose.

Solution: Check the speakers and wiring.

(2) Layered broadcasting cannot be achieved.

Cause: The hierarchical broadcast switching device is faulty.

Solution: Check the switching device and wiring.

(3) The broadcast is silent.

Reason: Generally there is no output for the amplifier.

Solution: Check the amplifier itself.

(4) It is not possible to switch to the accident broadcast.

Cause: Generally, the relay of the switching module does not operate.

Solution: Check the relay coil and contacts.

(5) The intercom hua can't talk normally.

Cause: The intercom hua itself is faulty, and the intercom hua terminal is loose or the line is damaged.

Solution: Check the intercom hua and the jack itself, check the line.

Fire shutter system

The main function completed by the system acts as a fire partition partition during the fire. When the fire occurs, the smoke detector alarms, the fire signal is sent to the rolling door control cabinet, the control cabinet sends a start signal, and the rolling door automatically descends to a position of 1.8m from the ground. (The shutter door of special parts can also be step by step). If the temperature detector detects the alarm again, the rolling door will be lowered to the end. The system consists of smoke detector, temperature detector, control button, motor, limit switch, rolling door control cabinet, system. Problems that are prone to occur, the causes, and simple solutions:

(1) The fire shutter door cannot be linked in the control center

Cause: The control center control device itself is faulty, the control module is faulty, and the linkage transmission line is faulty.

Solution: Check the control center control device itself, check the control module, and check the transmission line.

(2) Fire shutter doors cannot rise and fall

Cause: It may be a power failure, a motor failure, or a stuck door.

Solution: Check the main power, control power and motor, and check the door itself.

(3) The fire shutter door has no rise or no drop or no rise

Cause: Falling or rising button problems, contactor contacts and coil problems, limit switch problems, contactor interlocking normally closed contacts.

Solution: Check the down or up button, drop or raise the contactor switch and coil, check the limit switch, check the drop or rise contactor interlock normally closed contact.