Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
K.3.1.4 Take a position ready for descent, which may be in tension, e.g. connected to an anchor by an anchor lanyard (not shown in Figure K.1), or unsupported, depending on the take-off point. Carry out a function test as follows:a) with either the back-up device in a high ‘hands off position’ on the safety line or with an anchor lanyard attached to an anchor to provide protection, unlock the descending device while keeping a secure grip on the working line beneath the descending device;b) carry out a controlled descent of approximately 150 to 200 mm to confirm the descending device is functioning correctly. If an anchor lanyard is used for protection, it should then be removed.