Masonry Magazine November 2004 Page. 34
Onsite POWER
Generators resting on soft ground, like sand or soil, will often dig themselves into the ground from vibration, creating an uneven surface that will have the same effect as setting it on an angle. In addition, discharged air from the generator will stir up dust that can be sucked into the air cleaner, shortening service life. Dust can also be trapped in the cooling air, damaging the generator's rotor, stator and windings. If a generator must be operated on soft surfaces, set it on top of a piece of plywood or a stable platform to avoid the damaging consequences of dust.
In addition, the effects of bad weather can be detrimental. Generators are often used in rainy or icy conditions; however, rain and ice are potentially very damaging to generator components.
Water conducts electricity. When it comes in contact with electrically charged components, it can transmit electricity to other surfaces on the unit, greatly increasing the risk of electrical shock to operators. Additionally, icing can occur on the carburetor, the crankcase and the breather system, causing serious damage to the engine.
To avoid these situations, some operators will place a generator in an enclosed area. This can actually be much more harmful as generators produce carbon monoxide a clear, odorless gas that can be deadly when inhaled. Another common mistake is building a small, encasing structure around the generator. This is potentially dangerous because generators need an unlimited amount of ambient air to breathe properly. Encasing them in a small structure will "suffocate" the breather system and cause the engine to overheat, greatly increasing the risk of fire.
Rather than risking fire or exposure to carbon monoxide, position the generator in a location where it is sheltered from the elements, but still has room to breathe-about two feet on all sides.
The Factory Knows Best
BEYOND SUGGESTED MAINTENANCE procedures and placement, some operators believe they can improve the performance of their generator by tampering with factory-installed governors and speed settings. In reality, generators are manufactured with the exact engine speed needed to produce the specified wattage.
Tampering with engine speed can result in overheating and blowing out tools and attachments connected to the generator. Also, adjusting the speed setting will often cancel out any warranty coverage from the manufacturer.
If a generator isn't performing as well as it should, check oil and fuel levels, inspect the air filter and reduce the load rather than adjusting the engine speed.
NEW PORTABLE POWER
Several companies have introduced new onsite power products to the market this year that will fill almost any need, from big to small.
Bosch
In April, Bosch Power Tools and Accessories, a division of the Robert Bosch Tool Corporation, launched its one-of-a-kind Bosch Power Bax™ (PB10-CD). The Power Box is an all-in-one power center and job site radio/CD player with a four-way GFCI power outlet, integrated battery charger for 12, 14.4, 18- and 24-volt Bosch batteries, and 12-volt outlet perfect for charging cell phones and two-way radios. An aluminum roll cage prevents damage from everyday job site abuse, and features like sealed buttons, speakers, battery chamber and CD player assure protection from the elements. For more information, visit www.boschtools.com.
Multiquip
Multiquip's new GA-Series offers seven models, ranging from the 2.5kW GA-2.5H to the GA-9.7HE that generates 9.7kW. Each unit is wrapped with a thick one-inch steel frame for Improved durability and additional twist-receptacles so the operator can use more tools on the job. The generators are fitted with a rugged new look control panel and the choice of powerful Honda GX-Series or Robin EX-Series industrial grade engines. As with the predecessor, the new GA-Series incorporates the highest quality generator ends constructed with 100% copper windings and brushless alternator designs. This design ensures longer life for the alternator and outstanding voltage regulation for any tools powered by GA-Series units. For more information, visit www.multiquip.com.
Robin Subaru
Robin Subaru introduces the Power Series, a new line of automatic voltage regulation (AVR) portable generators known for high performance, quiet operation and ease-of-use. The Power Series includes models R1100, RG2800DX, RG3200DX and RG4300DX, generating maximum outputs ranging from 1,100 watts to 4,300 watts. Power Series generators offer clean and stable power through the use of advanced automatic voltage regulation (AVR) technology. Utilizing an exclusive advanced reverse cooling technology, the Robin Subaru Power Series generators also run quieter than most AVR generator technologies. All Power Series generators come with a unique one-touch control system that allows all engine functions to be controlled with a tum of a dial. For more information, visit www.robinsubaru.com.
Terex
Terex has introduced a new generation of Super Quiet Power Generators, including 13 models with prime power outputs from 20-406 kVA (16-325 kW). Terex Power Generators are designed and built to deliver high quality and high value to the rental industry and the jobsite. All models simultaneously deliver both single and three-phase outputs. The power side of the control panel on these models includes a main breaker, two GFCI duplex receptacles and two to three Tempower Twistlock. These models are driven by powerful yet fuel-efficient diesel engines from Deere, Perkins or Isuzu, and have a run time at 75% load ranges up to 78 hours on a single tank of fuel. For more information, visit www.terex.com.