Rack and pinion door closer with scissor action arms to DIN EN 1154 Features and advantages: Identical borhole pattern for all closer sizes. Closing force adjustable by moving the closer body and turning the arm bearing upside down. Easy fixing on timber, PVC, tubular frame aluminium or steel doors. Valve adjustment from the front:- control of closing speed- control of latching powerBoth functions as a standard. Plastic valves with optimum thermal characteristics provide consistent closing speed also with changes in temperature. Smartly shaped, compact aluminium casing. Application: The OTS 320 type is suitable for side hung timber, PVC, tubular frame steel or aluminium doors. Left or right hand use. Standard mounting on hinge side; transom mounting opposite to hinge side only if the fire rated door concerned is especially licensed for this kind of mounting (only size 3 and 4). If OTS 320 is used on fire rated doors, EN 1154 for door closers with hydraulic damping must be observed. Technical description: Door opening angle 180°. Controlled closing from any opening angle. Protection against forced operation via security valve. Optional integrated hold open function adjustable for door opening angles from approx. 70° to 150° (not allowed for fire rated doors).
