Perkomatic R85 Hydraulic Door Closer

The Perkomatic automatic door closer (R85) incorporates a combined hydraulic mechanism and spring assembly and offers a controlled rate of closure and good fire resistance making it suitable for use on latched 1/2 hour and 1 hour fire doors. It incorporates a latching action to overcome the resistance of the latch even when the door has been opened by only a small amount. The latching action is controlled by adjusting the point at which this action takes effect. If required, the door can be closed manually more quickly than by the Perkomatic, for instance to prevent heat loss from a room.

Suitable for use on light and medium weight internal doors, except those fitted with rising butts, Parliament or projecting hinges or where limited air displacement conditions exist. The distance between the centres of the two fixing plates must not exceed 45mm when the door is opened to its maximum. Should this distance be exceeded, e.g. through the use of wide-knuckled hinges, a door stop should be fitted at the appropriate distance. May be used on latched fire doors subject to approval by appropriate authorities. Principal applications are for all specific purposes and because of the innovative aspects of the units, it is felt there will be greater demand for the product in domestic use than has been the case with surface-mounted closers. Restricted ventilation or the fitting of door seals can affect the performance of the Perkomatic as with other closers.

The Perko is manufactured under a BS EN ISO 9001: 2000 Quality System. The closer also has UL and cUL approval and its listing control number is 85R6.

Main casing is 168mm long, 60mm high and 22.5mm wide. Anchor plates are 121mm long and 25mm wide.

The Perkomatic was incorporated in doors that were successfully subjected to fire tests by the Warrington Fire Research Centre to BS 476: Part 22: 1987 and assessed to BS EN 1634-1: 2000. At the end of the tests, the integrity of the doors was maintained. A copy of the assessments are available on request. The hydraulic fluid has been specially formulated to resist high temperatures and has a flash-point of 225C.