Packers Kromer balancers should be used to counterbalance tools and fixtures only. Spring balancers are not designed for non static loads where the weight on the balancer changes. The load must not be removed unless the cable is fully retracted. (Maintenance procedures to change a cable are the only exception.) Allowing an unloaded cable to race freely back into a balancer is dangerous and will damage the spring.

The load should be weighed from its suspension point to select the appropriate model. The total load weight including hoses and attachments should be specified between the mid and high side of the spring capacity. (Spring damage will occur and operator injuries are likely when attempting to operate below spring capacity.) Operating at or near maximum spring capacity will result in superior performance, enhanced spring life and reduced cost.

Packers Kromer "Zero Gravity" Tool Balancers may be adjusted to automatically retract the load, however, the tension required to retract the load must be overcome by the operator. "Zero Gravity" performance should be given maximum consideration, as cumulative and repetitive stress disorders will be significantly reduced when this product is utilized as designed. When the correct balancer is installed and adjusted properly the load may be positioned without increasing or decreasing forces.   Operating the balancer with tension set so high as to cause the entire balancer to bounce when the buffer retracts to the nozzle will result in shock loading of the balancer, the cable and the load and will result in premature failures and unsatisfactory performance.

Selecting the correct model requires an evaluation of the height available to suspend the balancer. This will determine the maximum work area and the cable length required for tool positioning and cable travel. Do not remove cable from inside the drum to position the load. Proper spring functioning for stepless load adjustment requires that the drum remain fully loaded. All series and models of our balancer product line is delivered with 6 feet of external cable specifically to position the load.  (Longer basic cable is available for all models.)