Orbis Commercial - Overhead Door Closers

Door Closers - Smoothline

Orbis Smoothline closers have been developed to provide high performance and a distinctive form, compatible with the Orbis range of door furniture

• Fixed power and adjustable power units available
• Fully compliant with BS EN 1154
• CE marked where applicable
• Fully adjustable for closing speed and latch action
• Hold-open, delayed action and backcheck facility available
• Each unit supplied with brackets suitable for universal mounting (fig.1, fig.66 or fig.61 applications)
• 31 806.30 slide track version suitable for mounting on pull or push side of the door or transom mounted (not illustrated)
• Fully fire tested to BS EN 1634 and suitable for use on fire doors up to 2hr rating

Electrical requirements

Operating voltage - 24v AC/DC (+10% - 15%) at 90mA max.

Opening and closing forces 

In order to show compliance with requirements for accessibility, the force needed to open the door, measured at the leading edge, from 0˚ must be less than 30N. See this page for further information. The size of the door, the accuracy of installation of the hardware, the presence of smoke or draught seals, the need to latch the door, the location of the door will all have a bearing on the force required to open it and as a consequence it may not be possible to provide a definitive statement as to which closers do or do not meet the opening force requirements of the regulations. For guidance purposes we have indicated in the chart below those closers which can in principle meet the opening force criteria for accessibility and also the closing force criteria for fire doors. Due to the principles of leverage, the door width is critical in assessing the relevant opening/closing forces. The chart indicates the minimum door leaf width that is possible to achieve the necessary opening force. The maximum leaf width may be governed by the maximum closer power in accordance with BS EN 1154.

Materials and construction

The Orbis Smoothline fixed power units have die cast aluminium mechanisms with die cast zinc covers and steel arms & brackets. 31 806 Smoothline adjustable mechanisms are cast iron.

Finishes

Smoothline closers have electrophoretic finishes with arms and brackets to match.

ESS - Electrophoretic Satin Stainless (to match SS7)
EPS - Electrophoretic Polished Stainless (to match PS7)
ESA - Electrophoretic Silk Anodised Aluminium (to match SA7)

In addition, a range of colour coated and sprayed metallic finishes complete with matching arms and brackets are available to special order.

Power sizes

The dimensions stated in the chart above relate to closers mounted on the pull side of the door (fig.1 applications) only. Door sizes may vary for BS EN 1155 (see power chart for more details).

Hold-Open closers

The use of mechanical hold-open closers is NOT PERMITTED on fire door applications.

BS EN Classifications

Orbis Commercial Smoothline closers have been fully tested to the requirements of BS EN 1154 (and BS EN 1155 where applicable) and have been designated with the Classification no. as shown below. Digit 3 applies to power size and depends on the closer specified.

Item no.
Features & Functions	31 803V	31 813V	31 806	31 816	31 826	31 836	27 865
Power size (see chart above)	1 - 4	1 - 4	2 - 6	2 - 5	2 - 5	2 - 6	3 - 4
Fixed power or spring power adjustable	spring	spring	spring	spring	spring	spring	spring
BS EN 1154 compliant	•	•	•	•	-	-	•
BS EN 1155 compliant	n/a	n/a	n/a	n/a	n/a	n/a	•
CE Marked	•	-	•	-	-	-	•
Min. door width (mm)	875	875	850	850	-	850	*
Max. door width (mm)	1100	1100	1400	1250	-	1400	1100
Grade of opening angle (see note #)	4	4	4	4	4	4	3
Adjustable closing speed	•	•	•	•	•	•	•
Adjustable latch action	•	•	•	•	•	•	•
Adjustable back check	•	•	•	•	•	•	•
Adjustable delayed closing action	-	-	-	-	•	•	-
Electromagnetic hold-open track	-	-	-	-	-	-	•
Hold open armset (non fire doors only)	-	•	-	•	•	-	-
Fire tested to EN 1634 - 2 hr	•	-	•	-	-	•	•

* no min. door size limits for electromagnetic hold open closer
# Grade 4 will close a door from 180˚ opening angle
Grade 3 will close a door from 105˚ opening angle

Specification advice

Fixed power closers are best suited to internal applications where traffic levels and draught or air pressure is unlikely to vary and where the door size is known. Adjustable power closers can be adjusted to suit door size and site conditions - variables that may be unknown at the time of specification. Specifying an adjustable closer can therefore help to avoid installing an under-powered or over-powered unit.