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    A0 Fire Damper

    A0 Fire Damper

    Overview:
    Marine fire damper suits for all kinds of vessels and offshore oil platform ventilation and ain conditioning system. When a fire breaks out in a cabin, the fire damper can be closed manually or automatically, preventing flame from spreading to other cabins through ventilating pipe. lt plays a role of isolating areas and ensuring the safety of vessels and platforms.
    Marine fire damper can be divided into two types according to the functions: the damper for fireproofing and the damper for discharging smoke.
    The damper for fireproofing is installed in the fire compartmentation place of the ventilation system and air conditioning system. lt is uauslly open for ventilating. When the fire occurs, it wil be closed automatically and prevent the fire from spreading when the tempreture in the ventilating pipe reaches to 70 degrees.
    The damper for discharging smoke is mainly used in mechanical smoke extraction system and usually closed. When the fire occurs, it will discharge smoke automatically or manually by automatic fire alarm linkage signal. It will be closed automatically and play the role of isolating areas when the temperature in the ventilating pipe reaches to 280 degrees.
    Our company has been one of the first domestic units to produce marine fire damper for over twenty years. Our company is also one of the standard drafting units of CB/T3557-1995 “marine fire damper”. Our engineering and technical staff spent more than two years developing the new type fire damper according to users’ feedback information and valuable experience.

    Component:

    Types & parameter

    Type

    axd

    L

    Flange size

    CFH-S axd

    100×100~500×700

    250

    According to GB1561-79

    Circular single-blade manual fire damper

    Type

    axd

    L

    Flange size

    CFH-S φD

    100~500

    250

    According to GB1561-79

    Rectangular multi-blades manual fire damper

    Type

    axd

    L

    Flange size

    CFHD-S axd

    300×400~1600×2000

    250

    According to GB1561-79

    Circular multi-blades manual fire damper

    Type

    axd

    L

    Flange size

    CFHD-S φD

    300~1800

    300

    According to GB1561-79


    Functions:

    Control method

    Manual+overtemperature shutdown(temperature sensor)

    Control unit

    Manual control box

    Installation type

    Bulkhead type/deck type

    Fire resistence rating

    A0/A15/A30/A60

    Control mode

    Local/remote cable control (optional)

    Switch working angel of valve plate

    0° 90°

    Switch indicator

    Mechanical+remote open or close fire resistance rating

    Turn-off time

    2 s

    Overtemperature shutdown

    70±3

    Air-tightness

    Hermetic/non-Hermetic

    Air-leakage

    Hermetic: meet EN1751:1998 standard

    Non-Hermetic: meet CB/T3557-1995

    Spindle material

    Stainless steel

    Explosion-proof requirement

    Explosion-proof/non-explosion-proof

    Valve body colour

    Red(standard) or user difine

    Model

    Hermetic: rectangle/rectangle to round

    Non-Hermetic: rectangle/round/rectangle to round

    Fault analysis and maintenance:

    Fault phenomenon

    Reason

    Examine and repair

    Fire damper closed

    1. The air source is not supplied

    2. The manual reversing valve is damaged

    3. Cylinder damage

    4. The solenoid valve coil is burnt out

    1. Check the air supply pipeline

    2. Replace the manual reversing valve

    3. Repair or replace the cylinder

    4. Replace the coil

    The indicator light on the control box does not display

    1. The connector is loose

    2. Signal box switch circuit fault

    3. The indicator light is damaged

    1. Reconnect the line

    2. Repair the switch circuit

    3. Replace the indicator light

    The power transmission of fire damper cannot be opened

    1. The fuse is burnt out

    2. The cylinder spring is damaged

    3. The windshield blade is rusted and stuck

    4. The relay is damaged

    1. Replace the fuse with a new one

    2. Replace the spring with a new one

    3. Remove rust and polish movable wind vane

    4. Replace the relay with a new one

    The brake switch is not in place

    Long term ventilation leads to dust accumulation at the brake disc, and the brake disc shaft is rusted and stuck

    1. Do a good job of monthly inspection. If the switch is not in place, deal with it. Activate the air brake and refuel the rotating shaft

    2. Remove the air brake in important areas for thorough cleaning

    3. Longer term: the new platform is built, and the oil nozzle is added at the rotating shaft to facilitate maintenance

    Drawing:

    Manual Type Fire Damper

    Our inventory:


    IACS Certificate: ABS, DNV▪GL, CE, CCS, BV, KR, LR


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