BHMA A156-14:2002 pdf download.AMERICAN NATIONAL STANDARD FOR SLIDING AND FOLDING DOOR HARDWARE
3.6.7 Do not add any lubricants to the hardware, including guides, unless specified by the manufacturer.Lubricants that have been applied during manufacture as standard procedure are permissible. Lubricants shall not be added during the test.
3.6.8 Tolerances All values which do not carry specific tolerances or are not marked maximum or minimum shall have the following tolerances: Linear dimensions shall be±1/16 in (1.6 mm). Pounds or pound force shall be±2%. Degrees shall be±2 degrees.
3.6.9 Measuring Equipment. All instruments and equipment used in the conduct of tests for recording data need to be calibrated and maintained for effectiveness and continued accuracy. Calibration of equipment shall be traceable to National Institute of Standards and Technology (NIST). The frequency of calibration depends on the recommendation of the particular test equipment manufacturer with a minimum being once per year. Measuring equipment used shall have a known measurement error and be capable of qualifying the value being measured.
4. PERFORMANCE TESTS
4.1 Static Load Test (Heavy Shiding Doors): The track shall be installed with the supports spaced along the track at the manufacturer's recommended spacing. The Static Load Test shall consist of two tests, one with a hanger located midway between two brackets and the other with a hanger located directly under a bracket. Subject the hangers, track, and supports to a static load equal to two times their maximum rated capacity.
4.3 Durabillity Test (Heavy Sliding Doors)
4.3.1 At random, select hardware from stock and apply it to test setup as shown in Figure 1. Door shall automatically traverse the test track at a speed not to exceed 50 feet (15 m) per minute. One cycle consists of operating the door(s) from the fully closed position to the fully open position to the fully closed position. Track, hangers and supports shall be installed in accordance with the manufacturer's instruction sheet. Throughout the durability test, all parts shall remain operational and not require any adjustment. Hardware shall satisfy the requirements in 4.2 at completion of required number of cycles.
4.7 Durability Test (Bifold Doors, see Figures2 & 3)
4.7.1 Attach a mechanical device in such a manner that it will open pivot door within 2 in (51 mm) of fully open position and close the doors at least 5 but not more than 7 times per minute. The actuator,without applying additional force, shall attach to or engage with the doors at the point the manufacturer recommends for location of knob or pull. Perform tests 4.4, 4.5, and 4.6 after Durability Test has been run. One cycle consists closed to open to closed position. Any deformation of track or hanger assembly shall not allow unintentional disengagement between the hangers and the track.BHMA A156-14 pdf download.