require an application-engineered solution, or is the answer somewhere in between? Operational enhancements were discussed for reasonable value-added design upgrades, some of which can be implemented after original gear drives replaced in service. Also discussed were gear drive features representing value-added design improvements that, when built into a purchase specification for new units, can result in significant equipment life-cycle cost reduction and longer and more reliable life-cycle operation. Every enhancement discussed in this paper might not be for everyone or every particular application, but some of these ideas can be of benefit to operators in the never ending pursuit of a cooling tower gearbox that is economical to operate, reliable, and generates little or no life-cycle surprises.

"Preventive Maintenance: An Examination of the Root Causes of Gearbox Failure"

When equipment fails, often a plant managers biggest concern is how to get the equipment running again. However, equally important to getting it back online is discovering 1) why the equipment failed, and 2) how such a failure can be prevented in the future. This paper provides plant managers and service technicians with the knowledge to identify causes of gearbox failure, a crucial link in the power transmission chain, with hope that it will lead them to establishing an effective preventative maintenance program of their own.

"Understanding and Maintaining an Effective Lubrication System"

This paper provides plant managers, engineers and service technicians with the knowledge necessary to both understand the necessity of a well-designed lubrication system and, just as importantly, how to maintain an effective lubrication system. This piece examines the number of lubricant types available, as well as the systems used to supply such lubricant throughout a gearbox. A shortfall in the understanding of these concepts can lead to premature gearbox failure.

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White Papers:	Acoustic Properties Cooling Tower Gear Drive Preventive Maintenance Effective Lubrication System
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