Using proper operating practices, the load and arbor will always be balanced. However, when counterweight sets are not properly balanced, the operator can lose control of the set allowing it to “run away” — possibly causing damage or injury. The SureLock rope lock incorporates a load sensing mechanism, and can tell if a set is more than 50 lbs. out of balance. If the set is out of balance, the SureLock cannot be opened, preventing runaways.

1. User training — Operators of moving equipment of any type must be trained to understand the equipment and the proper methods of operation. No one should be allowed to handle any equipment backstage unless they are properly trained in the operation of the equipment. More information.   2. Loading Gallery (bridge) — Loads are added to or removed from the batten when it is at floor level. When the batten is at floor level, the counterweight arbor is at its highest level. To balance the load on the batten, weight is added to or removed from the counterweight arbor. In order to do this, there must be a loading gallery. Without a loading gallery it is difficult to safely balance rigging sets. The use of a SureLock will not solve this problem. A loading gallery is a necessity for any counterweight rigging system.     3. SureLock — The use of a SureLock will significantly reduce the risk of runaway rigging sets. 4. Annual Inspection — your rigging system should be inspected annually by a theatre rigging specialist. We suggest rigging dealers who are members of the “Entertainment Services Technology Association”. This is a non-profit trade association who's members meet membership requirements and subscribe to a Code of Conduct.