Standard_Parts_Catalogue

Page 1369 | 3.3 Hinging, Latching, Locking of Doors and Covers Multiple-Joint Hinges Mounting Information Design The following principles should be observed in mounting the hinge connection and mounting the multiple-joint hinges. This will help prevent wedging or clamping and ensure even, low-wear movement. The multiple-joint hinge will remain in operation for a long time as a result. • Multiple-joint hinges are installed at least in pairs. • Multiple-joint hinges are aligned parallel to each other. • Multiple-joint hinges are aligned in a plane parallel to the door, flap or hatch opening. • Suitable limiting and stop elements are used to prevent the hinge mechanism from opening past the intended opening angle (less than 0° or more than 90°, 120° or 180°). • All hinges participating in the movement bear roughly the same load (lever, center of gravity, ...). • The indicated load capacity of the multiple-joint hinges is not exceeded. Mounting In addition to the precautions to be taken during mounting, a number of additional points must be noted. • The fixing screws must have at least strength class 8.8 or A2-70 and must be tightened with the specified torque. Reinforced washers are included with the aluminum hinges. Washers, e.g. as per DIN 125 A or ISO 7089, are used with the stainless steel hinges. • The multiple-joint hinges may not be installed or aligned using force, such as with a hammer or pry bar. • If a hinge is stuck or warped, or starts making noise when moved, the cause must be determined and rectified by aligning and adjusting the hinge. Adjustment The slotted holes of the fixing angle pieces or fastening flanges can be used to adjust the hinges in two planes. For the third plane, the spacer plates GN 2370 are available as compensation and shimming accessories for the stainless steel multiple-joint hinges, and the spacer plates GN 7247.2 are available for aluminum multiple-joint hinges. Modification Subsequent modification of the hinges by polishing, coating, welding or connecting additional components such as pneumatic springs, latching elements, etc. can impair the functionality of the hinge or lead to a defect. Changes should be tested in a test setup first to ensure reliable functioning. Safety When opening and closing the multiple-joint hinges, there is a risk of injury from the hinge mechanism. Fingers can be caught or crushed.