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Safety Device Options for Sectional Overhead Doors
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Safety Device Options for Sectional Overhead Doors


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  • 1. Sectional Overhead Door Operation & Safety Device Choices Presented by Anglia Door Systems Ltd 0800 1444338 Images courtesy of
  • 2. Manual Chain Hoist Ideal for doors that are not used frequently and suitable for sectional doors upto 30m2, a chain hoist requires only moderate physical exertion to open the doors. However, Safety Brakes must be fitted to ensure that the chains cannot cause injury should the door cables break.
  • 3. Dead man’s switch - Electric For infrequent use, with the Dead man’s switch, one push of the button will open the doors. To close the doors, the operator must keep the button pressed. If the button is released the door movement will stop. This enables the operator to ensure that no objects/people come into the opening during the closing operation.
  • 4. Touch control - electric If the doors are in frequent use, a touch control may be your best choice. The door raises or lowers at the touch of a button, without having to keep the button depressed. The doors are electronically adjusted to stop in a set position. An obstacle detection system is built into the door’s bottom rail, to automatically raise it should an object be detected.
  • 5. One touch with remote control Allowing the fork lift driver to remain seated whilst the doors are operated, and saving time, the touch control system also has the option of remote control operation. This option includes a stationary photoelectric safety sensor fitted to the door that will stop the door should the light beam be broken.
  • 6. Touch control with remote control If the doors are in constant use, and fitted with a high speed motor, a touch control with remote control is an ideal solution. The doors raise and lower automatically to electronically adjusted positions. An obstacle detection system is built into the doors bottom seals, and photocell detection can also be fitted.
  • 7. Control box features There are a variety of top quality controls that can be integrated in your door’s control box. Numerous elements can also be mounted on an interior or exterior wall, a pillar or anywhere in close proximity to the door, including safety devices, switches, warning lights and more.
  • 8. Motor with emergency chain All drive systems have a mechanical backup system to the reduction gearbox of the electric motor, allow the sectional door to be opened in the event of an electricity failure. The backup system is activated and deactivated manually using pull cords and the reduction gear can then be powered by the chain.
  • 9. Motor with release system The motor can also be fitted with a release system. Cables are used to disconnect the reduction gearbox from the spring shaft, allowing the sectional door to be opened more quickly in the event of a malfunction. Doors fitted with a release system must be fitted with a spring break safety device.
  • 10. Main switch with padlock As well as an electricity isolation switch, the main switch can used to turn the power off, so that the door system can be safely serviced. Securing the switch with a padlock prevents an unauthorised person from accidently turning the power back on whilst the doors are being worked on.
  • 11. Key switch The key switch is used to disable the control box, and therefore the doors, to prevent unauthorised people from operating the door. Only authorised key holders can activate the doors.
  • 12. Two setting switch You can use this switch to configure two settings. For example, pushing the button once can cause the door to open enough for people to pass through, or pushing the button twice to open the doors fully. This option is ideal if you don’t always need to open the door completely, and it saves energy.
  • 13. Emergency stop In the UK, in addition to other safety devices, an emergency stop button is required. When pressed this will isolate power from the control box, and stop the doors in their current position.
  • 14. Wireless communication Normally, the control box and the connection box on the door panel are connected via spiral cables. These cables can become damaged over time, requiring the cables to be replaced. An alternative option is a battery powered transmitter, that send signals to the control box.
  • 15. Extra control features In addition to the controls already described, there are a number of optional control features that can be added.
  • 16. Extra control panel If the door needs to be operated from multiple places or even remotely, such as from a security point, an additional control panel can be fitted. This handy ‘up-stop-down’ panel features all the buttons in the standard control box.
  • 17. Traffic and warning lights Traffic lights and warning lights installed on either side of the door are an effective way of preventing injury to people and damage to the doors or goods passing through. Warning lights alert people and light up before the door opens, while traffic lights control the traffic and prevent damage to the doors.
  • 18. Key switch The door can be operated using a separate key switch, which can be mounted on an exterior wall. There are two models: the built- in version, which is used a lot in new properties, and the mounted version, which can be installed during a renovation without having to break or dismantle anything.
  • 19. Electronic keypad If access to a door is required 24/7, it can be fitted with an electronic keypad. This can be handy if transport and courier companies need to have round-the-clock access to secure collection or delivery points.
  • 20. Pull switch The fork lift driver can use the pull switch to operate the door while staying seated. This is the ideal solution if you have a lot of employees, but don’t want to give all of them a hand transmitter for the door. The pull switch is often mounted on a frame a few metres in front or behind the door.
  • 21. Remote control The control box contains a receiver, making it easy to upgrade the door system to a remote control one. You can choose between one, two or four-channel transmitters, allowing the transmitter to operate up to four different doors.
  • 22. Mechanical safety devices The Workplace (Health, Safety and Welfare) Regulations 1992 require that sectional doors be equipped with safety devices that will prevent the doors from coming down and coming into contact with people, vehicles or obstacles.
  • 23. Spring breaks European standard EN-13241-1 requires that doors may never descend without being controlled. All manually operated sectional doors must therefore be fitted with a spring break system. This device blocks the spring shaft in the event of the spring breaking. With motor driven doors a spring break is not necessary as there is a self-locking gearbox. However spring breaks must be fitted where there is a manual override system in place.
  • 24. Cable break safety device Sectional doors are operated by the raising and lower of cables affixed to the bottom of the door. Should one or both of the cables break, the door will come crashing down. A cable break system will prevent the doors from coming down should either cable break. Safety breaks are fitted as standard on all new door installations, and can be easily fitted to older doors that don’t have them.
  • 25. Locking device Sectional doors are suspended on flexible cables, making it possible to raise them when they are unlocked. Designed especially for light, automatically operated doors, the locking system prevents this. Without it, sectional doors are more vulnerable to break-ins. Manually operated doors are fitted with a spring-loaded mechanical slide lock as standard.
  • 26. Electronic safety devices Along with mechanical safety devices, electronic safety devices provide an additional level of resettable safety to your door systems.
  • 27. Slack cable devices A slack cable device is a micro switch attached to the cables on either side of the door. Should one of the cables become slack or breaks, the motor is immediately disabled preventing the door from operating.
  • 28. Standard safety edge The safety edge device is integrated with a transmitter and receiver in the doors bottom rubber seal. If the signal is broken by an object or person coming into contact with the seal, the door will stop and retract. The maximum contact pressure is 40kg, however you can choose a predictive safety edge if you have products that cannot withstand that level of pressure.
  • 29. Predictive safety edge The predictive safety edge is located 8cm below the door. If the bottom of the door approaches an obstacle, a signal is immediately sent to the motor and the door stops and reopens. This means the safety edge works without coming into contact with people, goods or vehicles.
  • 30. Photoelectric safety sensor Motors with touch control must have a photoelectric safety device if the door opening is not visible to users while they are operating the door. There are two types, a model with a transmitter and reflector and a model with a transmitter and receiver. In both systems there is a transmitter attached to the rail on the control box side and a reflector or receiver attached to the rail on the opposite side. If the beam is broken, the motor will stop and reverse opening the door.