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CMC Rescue presents a supplemental instructional guide for the CMC Rescue Multipurpose Device (MPD), this video briefly reviews the basics of the MPD, including parts, loading instructions, and rigging for use in technical rescue applications.

Here, LeRoy Harbach, one of the CMC Rescue School instructors talks about the MPD, its operation, and how to use it. The MPD is designed to replace several components in a traditional rigging setup, namely the anchor plate, descent control which in this case is a barrack, the load release, change of direction pulley, and the prusik. The MPD replaces all of this while effectively and efficiently doing all of the same jobs performed by this traditional setup.

The MPD is UL Classified to the NFPA 1893 standards as a pulley, auxiliary equipment as well as a descent control device. It carries multiple certifications for one piece of equipment. It comes in two sizes, the 11 mm version and the 13 mm version. Both versions are designed to be used with static or low stretch kernmantle rope.

The release handle does not engage unless you lift up on it to prevent any inadvertent bumping from releasing the load or from allowing the load to go down. The parking brake is designed so that if the operator needs to walk away they can set the parking brake, put it into position and not have to be concerned if the load is going to move. The front cover protects the gear drive that operates the release. The front cover plate lists the data and classifications. The backside contains a graphic illustration that shows hand position as well as the load side of the MPD.

The MPD operates via a one-way bearing on the pulley sheave on the inside so that it will only spin as a high-efficiency pulley in the raising position. Because it is a one-way bearing it engages a moveable brake. The moveable brake works is via the smooth interface between the fixed friction post and the moveable brake, squeezing the rope or holding the rope in position. There are no teeth and it is not jawed so it is a very smooth interface so we do not have to worry about rope damage. The secondary friction post allows the rope to come up and through for additional friction with heavier loads for controlled lowering. The becket on the bottom is a rated connection point for either a forward tie or to build a mechanical advantage.

Watch the video for more rigging guidance... how to load the device, connect it into an anchor, how to perform a safety check, etc.


CMC Rescue, the most trusted name in rescue equipment and training. CMC Rescue Equipment and CMC Rescue School specialize in providing rope rescue gear products, rope hardware, and rescue kits and systems as well as providing rope rescue and rope access training for pros in technical rope rescue, fire rescue, search and rescue, SAR, tower rescue and industrial rope access. In addition, CMC offers rescue equipment and training school classes for confined space rescue and entry, air rescue operations, helo ops, Swiftwater and flatwater rescue, and courses for work at height fall protection. Some of the quality products offered by CMC Rescue Equipment are Petzl and DBI SALA products, Aztek pulleys, ProSeries pulley systems, CMC Roco harnesses, ProTech carabiners, Arizona Vortex and Sked Evac tripods, Skedco and Traverse Rescue litters and stretchers, lanyards, straps and anchors, books, manuals, and field guides.

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