Conditioning by abrasion 2.7.3.6.1. The abrasion procedure shall be performed on every device in which the strap is in contact with a rigid part of the belt. However, the type 1 abrasion test (2.7.3.6.4.1) need not be carried out on the belt-adjusting device where the micro-slip test (2.7.4) shows that the strap slips less than half the prescribed amount. The setting on the test apparatus shall approximately maintain the relative position of strap and contact area.
