Utility Contractor

SEP-OCT 2018

As the official magazine of NUCA, Utility Contractor presents the latest information affecting every aspect of the utility construction industry, including technological advancements, safety issues, legislative developments and instructional advice.

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ones include hydraulic booms to make handling the hose easier, a hot box that warms the water coming out of the high-pressure wand, a core saw for potholing through pavement and concrete, as well as a sewer jester for cleaning pipes. There is also a list of accessories that will increase the number of applications vacuum excavators can be used for including sweepers and cleaners, which can help clean up a jobsite after an outdoor event, as well as a misting ring to help handle dry dust and debris during microtrenching applications. Reed Munro is Marketing Coordinator for McLaughlin Underground, a Vermeer Company. time. For example, 15 in. (38 cm) of mercury is the lift involved to be able to pull a column of water 17 ft (5 m) into the air. ■ The industry standard for trailer- mounted units — and for potholing and most drill fluid cleanup applications — is 15 in. (38 cm) of mercury. ■ More inches of mercury may be beneficial when dealing with heavy fluid or slurry. Choosing the Right Unit Many manufacturers offer truck- and trailer-mounted vacuum excavators with a range of tanks sizes starting with 300 gal (1,135 L). Models also vary in the amount of material they can displace, the volume of air being moved, and suction pressure. According to Jeffords, vacuum excavators with a 3-in. (7.6-cm) diameter suction hose are the commonly used for utility potholing work. "Units with this size hose, tend to be on the smaller size of the vacuum excavator models but pack plenty of suction force," he said. "Of course, one unit isn't the right choice for everyone, which is why McLaughlin Underground offers several different options in the 3-, 4-, 5- and 6-in. hose categories. We carry gas and diesel trailer- mounted units, as well as fuel efficient truck-mounted systems. Users can also choose between spoil tanks ranging from 300–3,000 gal (1,135-11,356 L) in size." Evaluating the dealer and their service and support when shopping for a vacuum excavator is also important. While vacuum excavators are not challenging to operate or much different from other machines to service, having a local dealer that is familiar with them will shorten the amount of time spent learning. Since vacuum excavators usually are not a mainline product for most equipment dealers, finding local support can be a challenge. Buyers should seek out reputable underground construction dealers with multiple locations, so help is never far away. Adding versatility Vacuum excavators can be equipped with additional options and accessories to increase their versality. The most popular Utility Contractor 23

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