d&b T-Series - Manual (Page 39)

5.2. Hoisting and securing the array
When all the mechanical adjustments, system checks and safety checks
have been made the array can be hoisted up to its operating position.
When hoisting the array, ensure that the loudspeaker cables do not get
caught anywhere. The cables can be strapped together with the motor
cable to form a loom while the system is hoisted.
The chain hoist motors must raise the system slowly and evenly so that it
does not swing or move from side to side during hoisting.
When the array is in its final operating position the secondary safety
must be applied. A detailed description is given in section 3.4
Secondary safety on page 17.
T-Series Rigging manual (1.1 EN) Page 39 of 44