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Vedard Alarm Security Export Sales Company
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Debugging of automatic fire alarm system
Source: https://vedard.com/blog/debugging-of-automatic-fire-alarm-system
Date: 2020/08/28
Before debugging the automatic fire alarm system, the specifications, models, quantities and spare parts of the equipment should be checked according to the requirements of the design documents. The construction quality of the system shall be checked according to the corresponding construction requirements, and the problems arising in the construction shall be solved through consultation with the relevant units, and written records shall be provided. Inspect the system lines according to the requirements of the corresponding construction, for the fault lines, open, empty welding, the problem such as short circuit, insulation resistance is less than 20 m Ω, corresponding treatment measures should be taken.

Respectively electricity inspection for single machine is required for fire alarm controller, fire linkage controller in the system, the combustible gas alarm controller, electric fire monitor, gas (bubble), fire extinguishing controller of electrical control equipment, fire fighting equipment, emergency power, fire emergency broadcasting equipment, fire special telephone, fire alarm transmission equipment or user information transmission device, fire control room graphic display device, fire, fire shutter controller, electric actuator area monitors display panel (fire), fire emergency lighting control, fire door monitor, fire alarm device.

Firstly, Fire Alarm Controller
Before debugging, all external control lines of the fire alarm controller should be cut off, and the power should be switched on after connecting the fire detector of any bus circuit and the manual fire alarm button and other components on the bus circuit.
According to the relevant requirements of the fire Alarm Controller standard, the following functions of the controller shall be checked and recorded one by one by means of observation and instrument measurement, which shall meet the following requirements:
1.Self-check function and operation level
Make the connection between the controller and the detector open or short, and the controller should send fault signal within 100s (except fire alarm signal in case of short circuit);In the fault state, make the detector in any non-fault part send fire alarm signal, the controller should send fire alarm signal within 1min, and record the fire alarm time;Then make other detectors send fire alarm signal to check the controller’s alarm function again.
2.Mute and reset functions
Make the connection between the controller and the standby power cut off or short. The controller should send a fault signal within 100s.
3.Check shielding function
Short-circuit any point within the protection scope of the bus isolator and check the isolation and protection function of the bus isolator.
4.Make at least 10 fire detectors on any bus circuit in the state of fire alarm at the same time to check the load function of the controller.
5.The automatic conversion function of main and standby power supplies, and the inspection of article 4 shall be repeated under the condition of standby power supply.
6.Other functions specific to the alarm control panel
7.Connect the other loops to the fire alarm controller in turn and repeat the inspection
Secondly, point type smoke and heat detector
1. Check the alarm function of each fire detector one by one by using the special detection instrument or the method of simulating fire. The detector should be able to send fire alarm signal.
For unrecoverable fire detector, simulated alarm method should be adopted to check its alarm function one by one, and the detector should be able to send fire alarm signal.When there are spare parts, can sample check its alarm function.

2.The alarm function of each household fire detector shall be checked one by one by means of special detection instruments, fire simulation or pressing the detector alarm test button. The detector shall be able to send sound and light alarm signals, and the connected detector shall send sound alarm signals.
Thirdly, linear type heat detectors

Simulate fire alarm and fault on the unrecoverable detector, check the fire alarm and fault alarm function of each fire detector one by one, and the detector should be able to send fire alarm and fault signal respectively.The recoverable detector can be made to send fire alarm signals and simulate faults by means of special detection instruments or fire simulation. The fire alarm and fault alarm functions of each fire detector can be checked one by one. The detector should be able to send fire alarm and fault signals respectively.
Fourthly, linear beam smoke detector

Adjust the optical regulating device of the detector one by one, so that the detector is in the normal monitoring state. Block the optical path with the optical dimmer of 0.9dB, and the detector should not send fire alarm signal. Block the optical path with a dimmer rate (1.0dB ~ 10.0dB) set by the product manufacturer, and the detector shall send fire alarm signal. Use a dimmer with a dimmer rate of 11.5dB to block the optical path, and the detector should send fault signal or fire alarm signal. When selecting reflection-type detector, the detector should be checked at 0.5m in front of the detector according to the above requirements, and the detector should respond correctly.
Fifthly, line sampling suction smoke fire detector

Add test smoke one by one into the sampling hole at the end of the sampling tube (the most unfavorable place), and use stopwatch to measure the alarm response time of the detector. The detector or its control device should send fire alarm signal within 120s. According to the product manual, the airflow of the sampling tube of the detector is changed to make the detector in a fault state. A stopwatch is used to measure the alarm response time of the detector. The detector or its control device should send a fault signal within 100s.
Sixthly, point fire detector and picture fire detector

The detector’s alarm function should be checked one by one in the most unfavorable part of the detector’s monitoring area by special detection instrument or fire simulation method, and the detector should be able to respond correctly.
Seventhly, Manual fire alarm button
Apply appropriate thrust to the recoverable manual fire alarm button to make it act, and the alarm button should send out fire alarm signal. For the unrecoverable manual fire alarm button, the method of simulating action should be adopted to make the alarm button act (when there are spare parts, the action test can be conducted by sampling), and the alarm button should send out the fire alarm signal.
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