Computer room system encyclopedia: daily security maintenance and common fault handling methods

With the continuous development of today's Internet and big data era, many enterprises have begun to build their own computer rooms for storing data, operating systems, etc. The safety and operation of the computer room can ensure the safety and smoothness of the network and communications. Pay enough attention, but do you understand the hidden dangers in the computer room? The following is a summary of potential safety hazards in the computer room and solutions.

1 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 displayed by the sound and light signal, and displays the location of the fire on the control panel, so as to achieve the purpose of predicting the fire alarm The manual alarm function can be completed by the manual alarm button.

1. System composition

(1) Manual alarm device: manual alarm button.

(2) Controller: smoke detector, temperature detector, flame detector.

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

2. Problems prone to occur in the system, their causes, and simple handling methods

(1) Line failure

Cause: The insulation layer is damaged, the joint is loose, and the ambient humidity is too high, which causes the insulation to fall.

Treatment method: Use a table to check the degree of insulation, check the condition of the joint, and use welding, plastic sealing and other processes when wiring.

(3) Detector false alarm, detector fault alarm

Reasons: Excessive ambient humidity, excessive wind speed, excessive dust, mechanical vibration, excessive use time of the detector, and device parameter decline.

Treatment method: Select the detector with appropriate sensitivity according to the installation environment. Avoid the air vents and the channels with large wind speed during installation, check regularly, and clean and replace the detector according to the situation.

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

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

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

(5) Alarm controller failure

Reason: The device of the machine itself is damaged, or the external detector or manual button causes the alarm controller to report a fault or fire alarm.

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

2 Smoke extraction system

The system is composed of a smoke exhaust valve, a manual control device, a smoke exhaust machine, and a smoke exhaust control cabinet. When the main function of the system is fire, the smoke exhaust control cabinet receives a fire signal and issues a command to open the smoke exhaust machine. To start the smoke exhaust, you can also manually operate the manual control device to complete the smoke exhaust function. The system is prone to problems, causes, and simple treatment methods:

(1) The exhaust valve cannot be opened

Reason: The exhaust valve control mechanism is malfunctioning, the electromagnet does not move or the mechanical corrosion causes the exhaust valve to fail to open.

Solution: Always check whether the operating mechanism is corroded or stuck, and check whether the electromagnet is working properly.

(2) The exhaust valve cannot be opened manually

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

Solution: Check the manual operation mechanism.

(3) The smoke exhauster does not start

Reasons: The exhaust system of the smoke exhauster is malfunctioning or the connection is loose or mechanical failure.

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

3 Automatic sprinkler system

The main functions completed by the system When the system is in normal working state, there is a certain pressure of water in the pipeline. When a fire occurs and the temperature of the fire reaches the temperature of the closed nozzle, the glass bubble breaks and the nozzle sprays water. The water in the pipeline is static It becomes dynamic, the water flow indicator acts, and the signal is transmitted to the fire control cabinet of the fire center for alarm. When the wet alarm device alarms and the pressure switch is activated, the spray pump is activated through the control cabinet to supply water to the pipeline to complete the fire extinguishing function of the system. Closed nozzles, water flow indicators, wet alarm valves, pressure switches, pressure regulator pumps, spray pumps, spray control cabinets, problems that are prone to occur in the system, the causes, and simple treatment methods:

(1) The linkage signal is issued, the spray pump does not operate

Reason: It may be that the connection between the control device and the fire pump starting cabinet is loose or the device is malfunctioning, or it may be a mechanical failure of the spray pump itself.

Solution: Check the connections and the pump itself.

(2) The voltage stabilizing device is frequently started

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

Treatment method: check each plumbing piece, sprinkler and end discharge device, find out the leakage point and deal with it.

(3) After the action of the spray head or the end discharge device is opened, there is no water in the front end of the pipeline after the linkage pump

Reason: The butterfly valve of the wet alarm device does not operate, and the wet alarm device cannot send water to the front-end pipeline.

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 a signal after the water flow action

Reason: In addition to the electrical circuit and terminal crimping problems, the main problem is the water flow indicator itself, including the blade is not moving, the blade is damaged, the micro switch is damaged or the reed switch contact is burnt, or the sex magnet does not work.

Treatment: Check whether the blade is damaged or stuck, check the magnet, dry reed pipe and other devices.

4 Fire hydrant system

The main function of the system is to fill the pipeline of the hydrant system with water under pressure. If the system has a small amount of leakage, you can rely on the pump or tank to maintain the water and pressure of the system. When there is a fire, first open the fire hydrant box, connect the interface and hose as required, aim the water gun at the fire source, open the fire hydrant valve, the water will be immediately ejected from the water gun, when the fire hydrant button is pressed, the fire pump is started through the fire hydrant into the pipeline Water supply. The system is composed of fire pump, pressure stabilized pump (or pressure stabilized tank), fire hydrant box, fire hydrant valve, interface water gun, hose, fire hydrant alarm button, fire hydrant system control cabinet, the system is prone to problems, causes, simple treatment methods :

(1) Open the hydrant valve without water

Cause: There may be a leak in the pipeline, which makes the pipeline water-free, and the pressure gauge is damaged, and the voltage stabilizing system does not work.

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

(2) Press the manual button, the fire pump cannot be linked to start

Reason: 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 equipment of the equipment itself, check whether the electrical and mechanical parts of the pump itself are faulty, and eliminate them.

5 Fire accident broadcasting and intercom system

The main functions completed by the system When the fire duty personnel get the fire situation, they can talk to each fire zone to understand the fire situation and use it to deal with the fire accident. They can also notify the relevant personnel to take appropriate measures through broadcasting to evacuate. Speakers, switch modules, fire broadcast control cabinets, easy-to-problems and causes, and simple solutions:

(1) Silence of broadcasting in individual parts.

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

Solution: Check the speaker and wiring.

(2) Hierarchical broadcasting cannot be achieved.

Cause: The layered broadcast switching device is malfunctioning.

Solution: Check the switching device and wiring.

(3) The broadcast is silent.

Reason: Generally speaking, there is no output from the amplifier.

Solution: Check the amplifier itself.

(4) It cannot be forced to switch to accident broadcasting.

Cause: Generally, it is caused by the relay of the switching module not operating.

Solution: Check the relay coil and contacts.

(5) The intercom cannot talk normally.

Cause: The intercom itself is faulty, the intercom jack wiring is loose or the line is damaged.

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

6Fireproof rolling door system

The main functions completed by the system play a role of fire partition partition when a fire occurs. When a 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 drops to a position 1.8m above the ground (The rolling door of the special part can also be completed in one step). If the temperature detector alarms again, the rolling door will be lowered to the bottom. The system consists of smoke detector, temperature detector, control button, motor, limit switch, rolling door control cabinet, system Easy problems, causes, and simple solutions:

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

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

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

(2) Fireproof rolling shutter door can not rise and fall

Cause: It may be power failure, motor failure or the door itself stuck

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

(3) The fire shutter door has rise without falling or fall without rising

Reasons: the problem of down or up button, the contactor and coil of the contactor, the problem of the limit switch, and the problem of the normally closed contact of the contactor interlock.

Solution: Check the down or up button, down or up contactor switch and coil, check the limit switch, and check the normally closed contact of the down or up contactor.

7 Management and maintenance of automatic fire alarm system

1. Inspection of the alarm device

During the inspection, the actual operation of a fire detector can be checked with a special smoke tool. When the fire detector receives the smoke, the alarm confirmation light turns on, indicating that the detector is working normally, and at the same time sends a fire signal to the alarm controller. Also check whether the clock is moving and whether there is a record of the time when the fire occurred. After the inspection, the staff on duty should mute and reset the equipment in time to prevent the equipment components from being damaged due to the long time.

2. Power check

It can check whether the AC power supply of the automatic fire alarm system is fluctuated due to the power supply of the large equipment. When it is found that the power supply line of the automatic fire alarm system is combined with other purposes of lighting and power lines, measures should be taken to set it separately Separate loop power supply for automatic fire alarm system. Check whether the voltage deviation of the automatic fire alarm system is within the allowable range, otherwise, voltage regulation measures should be taken. Century Star introduced that when the automatic switching between the main power supply and the backup power supply is normal, the power supply can be cut off to check whether it can be switched to the backup power supply. If a fault is found, measures should be taken. The power supply inspection generally conducts 1-2 charge and discharge tests on the backup power supply every quarter, and 1-3 times the automatic switching test between the main power supply and the backup power supply.

3. The problems that often occur in the use of the trigger device and their elimination

If the detection device is not applicable due to changes in environmental conditions, it should be replaced in time by the design and construction department. If the original guest room is changed to a kitchen, boiler room, boiling water room, or generator room, the smoke detector should be changed to a temperature detector. Because it is determined that the ambient operating temperature of the smoke detector is generally around 50 ℃, otherwise it may malfunction; the rated temperature of the fixed temperature detector action should be 10 ℃ -35 ℃ higher than the ambient temperature.

To prevent external interference or accidental damage. The detector must not only prevent false alarms caused by the influence of external natural factors such as smoke, dust and similar aerosols, the invasion of small animals, water vapor condensation, and icing, but also prevent human factors such as bookshelves and storage shelves. The placement of equipment, partitions, etc. will affect the detector and the manual alarm button. For the place where the second decoration is carried out, pay attention to check whether the original detector and the manual alarm button are intact and available, and whether the line is smooth. If the above problems must be repaired or replaced, otherwise the alarm will fail.

Pay attention to the cleaning of the detector and the storage of spare parts. In order to maintain its good performance and normal operation, it should be cleaned every three years after the detector has been running for two years.

4. Ensure the normal operation of the linkage control system

The linkage control system plays a very important role in protecting the safety in the building. Therefore, it controls indoor fire hydrant systems, automatic water spray systems, electric fire doors, fire shutters, ventilation and air conditioning, smoke and smoke exhaust equipment, and electric fire valves. The operation must be ensured to be normal. If the linkage system operates normally during the inspection, the signal will be fed back to the fire control room. If there is no information feedback, it means that the equipment is malfunctioning, and timely measures should be taken to eliminate it.

For fixed fire extinguishing systems such as halogenated alkanes, carbon dioxide, foam, dry powder, etc., it can be checked by simulation test. It should also be checked whether the control center can force the fire elevator to stop on the first floor. When the test fire accident is broadcast, regardless of the working state of the speaker , Should be able to switch it to the fire accident broadcast channel, for all fire accident lights and evacuation indicators to test whether the fire control equipment can be connected and can operate normally.

Check whether all the transfer switches such as power transfer switch, fire extinguisher transfer switch, smoke exhaust, fire door, fire shutter and other transfer switches, alarm transfer switches, emergency lighting transfer switches, etc. are in action. Handle in time to ensure that the entire system is in good condition.

The computer room attaches great importance to security, and often manages and maintains the automatic fire alarm system. The automatic fire alarm system is an advanced firefighting technical facility. The file management and triggering devices often have problems in use and their elimination and alarm devices. Inspection, power supply inspection, and ensuring the normal operation of the linked control system, etc., can fully play a role in fire prevention and fire extinguishment, and ensure the safe operation of equipment in the equipment room.