safety device options for sectional overhead doors

Sectional Overhead DoorOperation & Safety Device Choices

Presented by Anglia Door Systems Ltd

www.angliadoors.co.uk0800 1444338

Images courtesy of www.alpha-deuren.nl

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.

www.angliadoors.co.uk

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.


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.


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.


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.


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.


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.


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.


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.


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.


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.


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.


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.


Extra control features

In addition to the controls

already described, there are a

number of optional control

features that can be added.


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.


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.


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.


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.


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.


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.


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.


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.


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.


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.


Electronic safety devices

Along with mechanical safety

devices, electronic safety devices

provide an additional level of

resettable safety to your door

systems.


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.


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.


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.


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.


safety device options for sectional overhead doors

Engineering

touch control system

door movement

touch control electricif

sectional doors upto

door cables break

anglia door systems

obstacle detection system

control box featuresthere