Abstract: An air-cooled heat exchanger includes a plenum with a fan ring positioned adjacent to the plenum. Support columns support the plenum and the fan ring on a support surface. An X-brace assembly includes a motor mount with leg members extending radially from the motor mount. Each of the leg members is connected to a single corresponding one of the support columns so that the leg members extend between the motor mount and the support columns. A motor including a drive shaft is mounted to the motor mount of the X-brace assembly. A fan having fan blades is mounted to the drive shaft of the motor. The fan is positioned within the fan ring between the motor and the fan ring opening.

Abstract: A belt drive system includes a drive sheave and a driven sheave. A drive motor turns the drive sheave when the drive motor is activated. A drive belt is connected to the drive sheave and the driven sheave so that the driven sheave is turned when the drive motor is activated. The drive motor is mounted upon a shuttle and the shuttle is slidingly mounted on a base. A drive system moves the shuttle when the adjustment motor is activated so that a position of the drive sheave relative to the driven sheave may be adjusted so as to increase a tension in the drive belt. A controller activates the adjustment motor when slippage of the drive belt on either the drive sheave or the driven sheave is detected.

Abstract: A belt driven fan system that detects belt slippage includes a fan sheave with a fan sheave marker positioned thereon and a motor sheave with a motor sheave marker positioned thereon. The system also includes a fan sheave sensor, a motor sheave sensor and a drive belt operatively connected between the fan shaft sheave and the motor sheave. A controller is in communication with the fan sheave sensor and the motor sheave sensor.

Abstract: A fixture for lifting a heat exchanger header includes a first leg including a first receiver slot and a second leg including a second receiver slot and a first load arm pivotally attached to an upper portion of the first leg and a second load arm pivotally attached to an upper portion of the second leg. In use, the upper end portions of the first and second load arms are engaged by a lifting device. A first scissor arm is pivotally attached to the second leg and slidingly attached to the first leg by the first receiver slot. A second scissor arm is pivotally attached to the first leg and slidingly attached to the second leg by the second receiver slot. First and second connection plates are secured to the lower portions of the first and second legs and are connected to the tubing aperture of the heat exchanger header.

Abstract: A fixture for lifting a heat exchanger header includes a first leg including a first receiver slot and a second leg including a second receiver slot and a first load arm pivotally attached to an upper portion of the first leg and a second load arm pivotally attached to an upper portion of the second leg. In use, the upper end portions of the first and second load arms are engaged by a lifting device. A first scissor arm is pivotally attached to the second leg and slidingly attached to the first leg by the first receiver slot. A second scissor arm is pivotally attached to the first leg and slidingly attached to the second leg by the second receiver slot. First and second connection plates are secured to the lower portions of the first and second legs and are connected to the tubing aperture of the heat exchanger header.