Explosion-proof Type | COAD 코아드자동문


Explosion-proof Type

Product Features

Automatic door in safe from fire and
explosion applied general explosion-proof components

  • With its explosion-proof and general explosion-proof parts, this automatic door is safe for fire and explosion.
  • It is good for paint and gas factories where it is impossible to install electronic products.

Detail Contents


C-13 Explosion Proof Type

Explosion-proof type is an electric device protection
type which is resistant to explosion caused by explosive
gas, sparks of electric devices, or temperature
rise of electric devices.

Explosion-proof structure meets
the following three conditions:

  • A container has enough mechanical strength to endure internal explosive pressure,
  • The flame or high-temperature gas caused by internal
    explosion does not ignite external gas through the
    joint part of a container.
  • The external surface temperature of a container
    does not reach the ignition temperature of external gas.


Model Number SIZE M30 (Switch) #54 (Merer Switch Unit)
FOB-1 120 x 140 1 1
FOB-2 120 x 185 2 1
FOB-3 120 x 240 3 2
FOB-4 120 x 295 4 2
FOB-5 120 x 350 5 2
icon Sheet

The world-class premium fabric (SOL Screen Coating ) for boat

  • No twist and pinhole of fabric; excellent adhesion strength for easy process
  • Surface treatment: Fluorine (PVDF), acrylic, and PU treatment; single-side & double-side repeated 1-5 times of treatment
  • Customized selection (antibacterial & flame-resisting dual weaving structure)
icon Motor
  • 1. Vertical axis reducer with high efficiency

    About 20% efficiency higher than worm gear; more than 85% efficiency of reducer

  • 2. Low noise & low vibration

    Lower noise and vibration than bevel reducer/average 52~65dB

  • 3. High strength and long lifespan

    Increased gear strength and lifespan through carburizing heat treatment

  • 4. Lightweight and optimization

    Installation space saving and case and reducer weight reduction by offset

Worm reducer Hypoid reducer Remark
Motor capacity(kW) 0.4 0.4
Reduction ratio 10:1 ~ 20:1
1-step Worm 1/60
10:1 ~ 20:1
1-step Hypoid 1/10
2-step helical gear 1/6
Efficiency 60% 85% About 25% difference
Output Torque (kg-m) 7.8 11.0 About 30% difference
Size (mm) motor included 416x238x195 372x132x118 About 50% difference
Weight (kgf) motor included 20 20 11 About 50% difference in weight
icon Controller

Features of the controller for speed door

  • Inverter controller for speed door with the world’s best performance
  • Applicability to all automatic doors such as basic type, recovery type, Counter balance and others
  • Position controllability for ENCODER / LIMIT TYPE
  • Applicability to 1HP ~ 3HP motor
  • 2-Step Open Control to differentiate persons from vehicles
  • Compatibility with various devices (air curtain, conveyor, light bar, etc.)
  • Maximized insect-proof and cooling & heating effect by setting an air curtain time
  • Waterproof CASE to prevent controller damage from rain inflow and flooding
icon Perfect Seal


icon Sensor

1. Ultrasonic sensor

Falcon (Radar sensor)



  • Installation on the upper side of door
  • Microwave motion sensor
  • Detection of persons and vehicles in its detection area
  • Identification of persons and vehicles each
  • Reduction in the cycle of
    door closing by ignoring
    cross-passing vehicles




  • Active infrared sensor
  • 40 infrared spots with 3*3m in size
  • Detection area adjustment
  • Detection of object movement and its existence
  • Accident prevention in the way of remaining door
    opened in a certain time after an object
    in the detection area stops

Condor (Radar + Infrared sensor)



  • Dual technology senor with
    radar and infrared technologies
  • Enable to ignore vehicle cross-passing
  • Prevention of safety accident in the way
    of detecting all vehicles and persons
    on front of door
  • Alternative solution to conventional
    guidance loop type
  • Easy and fast installation

2. Vehicle & Metal Detector

Matrix (Metal Detector)



  • Vehicle & metal detection sensor
  • Enable to open or close door immediately
    with no touch of switch at a site with much
    movement of forklifts, vehicles, and goods
  • Laying loop detector and its connected coil on the ground
  • Accurate detection control and stability
  • Enable to prevent all types of interference by controlling four frequencies
  • Accurate detection with the use of ASB
    function for container vehicles and trailers

3. Safety Sensor

Safety Sensor (Basic Option)



  • Patent obtainment
  • Attachment of safety cap for malfunction
    prevention and normal operation
    even with impurities
  • Minimal non-detection area by basically providing
    4-point safety sensors on the left
    and right frames (two in each frame)

Pressure Sensor



  • At door down, if an obstacle increasingly
    presses the tube, door stops or is opened.
  • Automatic door opening when an object touches door
  • Detection distance: 10~50cm
  • Input voltage: 2mbar
  • Max contact point load: 0.5A/ 250VAC
  • Operating temperature: 20 ℃ ~50 ℃

4. Switch

Proximity switch (Microwave motion sensor)



  • Door open & close by detecting hands or objects
  • Clean maintenance without any touching
    impurities and bacteria of the hands on switch
  • Good for food, pharmaceutical, and cosmetics
    companies which are sensitive to hygiene
  • Non-contact motion recognition
  • Detection distance: 10~40cm
  • Operating temperature: 20 ℃ ~50 ℃

Pull Switch



  • Door open & close by pulling the string of door
  • Easy door open and close on vehicles like forklift
  • Single-pole snap switch
  • Easy door open & close
  • Quick door control

One Point Switch



  • Door open and close by pushing a button
  • Basic option
  • Quick door control

5. Remote Controller

3-channel remote controller



  • -channel remote controller: open, stop, and close
  • One remote controller for up to three doors
  • Direct transmission distance: 100m

Multi-channel Remote Control Sensor



  • One remote controller for multiple doors
  • One transmitter for up to 8 doors
  • Detection mode: AC220V 60Hz
  • Input voltage Relay No output
  • Operating temperature: 20 ℃ ~50 ℃