【 Weak current College 】 how automatic fire alarm system check maintenance---Power By 【 China power house network 】

One, systematic checks (General check)
(A) Visual inspection
1. check all devices (such as detector base, terminal box, manual button and alarm controller, etc.) is fully installed wiring, wiring ready.
2. system grounding conforms to specifications: automatic fire alarm system uses dedicated grounding device, its resistance value cannot be greater than 4 ohm, the use of common ground, should not be greater than 1 ohm; fire electronic devices using AC power supply, its metal casing and metal brackets, etc. should be made to protect the Earth, Earth wire with electric protection earthing (PE) route.
3. check the probe shape for damage. If any damage should, as far as possible, by the manufacturer or the professional maintenance Enterprise recovery process, this is because some Ionic detector containing radioactive substances.
4. check the alarm controller range knob, switch, plug-ins such as appearance and structure is intact.
(Ii) alarm controller functionality, performance, check the
1. through the fire alarm controller manual inspection devices,
Check the alarm controller features are functioning, including fire, various fault monitoring capabilities, silencers functions correctly.
2. cut off the AC power, standby power automatic work situation, various functionality.
3. observation of the voltmeter, ammeter indicates the value correctly.
4. all led, switch, button should be no corruption and bad conditions.
5. through manual checks device check alarm controller functionality, performance, automatic fire extinguishing, output control contact, etc shall action clock should not stop the clock.
(3) the system of functional, performance, check the
1. the effectiveness of a detector simulation, observation of alarm sound and light display controller alarm is normal, the detection area, and the corresponding architectural site is accurate.
2. loosen any fire detectors, alarm controller should have failed.
3. If the alarm system and automatic fire extinguishing device connections, system functionality, performance, check the front, should cut off the automatic fire-extinguishing appliances and alarm controller electrical connections, but you should check the alarm controller output of fire control joint actions, such as checking the output voltage or current value is consistent with the requirements.

Second, regular checks
Automatic fire alarm system put into operation, shall conduct periodic inspection and testing, to ensure that the system is functioning and reliability.
(A) daily inspection
Use the units per day should check alarm controller and area alarm controller features (such as fire, failure function, reset, silencers, etc.) is healthy, light damage. Check the method as: post, inspection capabilities available through bandong post, patrol switch to check its functionality; no post, inspection function, you can use to probe with smoke, heating the detector alarm, to check the alarm controller or zone alarm controller functionality. If not normal, it should be in the registration form and in a timely manner.
(B) the weekly check
Main, power automatic switch test.
(3) quarterly test and check
1. According to the specification of requirements, with a special smoking, heating test (without special tools can be electric blower etc apparatus) batches test probes for the proper functioning of the movement, led display is clear. Found defective shall be replaced in a timely manner.
2. test fire alarm devices for sound and light display correctly. In actual operation, you can test for all at once or some test, but it is necessary to pay attention to test before arrangements, so as to avoid unnecessary panic and confusion.
3. test of automatic sprinkler systems, fire alarm system online, flow indicators, pressure switch, alarm function, signal display correctly.
4. on standby power to charge and discharge test once or twice, once or twice, test preparation power supply automatic switching. Test method: cut off the main power supply to see if switching to standby power supply, the standby power light is lit, 4 hours, and then restore the main power supply for automatic conversion, and then check whether the normal charging stand-by power source.
5. have the linkage control functionality of the system should automatically or manually inspect fire control device display. ① smoke control equipment, electric fire safety valve, electric fire doors, fire shutter control devices such as; ② indoor fire hydrants, automatic sprinkler systems and control equipment; ③ halon, carbon dioxide, dry chemical, foam, fixed fire extinguishing system control equipment; ④ fire radio, fire lighting and lighting evacuation signs.
6. compulsory fire elevator stopped on the first floor.
7. fire communications equipment should be in the fire control room dialogue call test.
8. check all switch, such as the power switch, fire switch, smoke, fire doors, fire shutter, switch the alarm switch, emergency lighting switch, etc.
9. mandatory cut non-fire power function test. This test should also be made in advance, to avoid confusion and other accidents.
(4) annual test and check
Each year, should install all detectors check test again, another alert, alert, response equipment function test should run under the system for the test and inspection tests.
III. common failures and check
(A) main power failure. Check the input power is intact, there is no blow fuse, the bad, and so on.
(Ii) standby power supply failure. Check the charging device, the battery is damaged, the line has wuduan line.
(C) the detector circuit failure. Check the circuit to fire detector wiring is intact, fire detectors have been removed, the Terminal supervisor for damage.
(4) a false fire alarm. Should survey the false positives of fire detectors at the scene without steam, oil, dust and other effects of fire detectors working environment exists, if any, should be excluded. For false positives frequently without other interference affecting its normal work of Fire probeMeasuring devices, should be replaced in a timely manner.
(5) the fault cannot be excluded for a while, you should immediately notify the manufacturer, construction or major repair units as soon as possible repair, recovery work.