Pentalift Blog - January 2013
January 30, 2013, 3:14 pm - Safety Requirements of Pit Installed Lift Tables It is common for lift tables to be installed into a recessed pit, pit installation provides floor level access both on and off the lift table platform. Per ANSI MH29.1 Safety requirements for Industrial Scissor Lifts toe protection must be provided along the entire unprotected sides and ends of the platform if the lift table is pit installed. The two most common methods of providing toe protection are electric toe sensors and beveled toe guards. Electric toe sensors are installed below the platform edge and if an obstruction is met during descent the platform will be brought to rest. Beveled toe guards are provided as a physical alert. Beveled toe guards are tapered inward and are approximately 30 degrees from vertical to eliminate potential pinch points. The bevel angle pushes items in its path away.
January 14, 2013, 2:18 pm - Dock bumpers are a very important component of loading dock installations. Dock bumpers are the target for the backing truck / trailer. The dock bumpers also absorb the forces of the backing truck /trailer when it makes contact with the facility. The impact force from the backing truck / trailer can exceed 200, 000 lbs. Once parked at the facility the truck / trailer bed will move up and down as the weight of the lift truck and load is driven onto and off of it. This movement is referred to as “float”. It is important the dock bumper have the correct physical size and appropriate face material to accommodate the “float” range present at the installation. Steel faced bumpers provide a very effective loading dock bumper solution. Improper bumper selection and application may result in damage to the facility and truck / trailers as well as create safety concerns. Refer to the Pentalift web page for more bumper information http://www.pentalift.com/loading-docks/prodinfo-dock-bumpers.php. A Pentalift representative can assist with proper bumper selection and application.
January 9, 2013, 2:05 pm - Line loss is a decrease in the power supply from the source to the destination. As electricity flows energy is lost due to the heating of the conductor, caused by electrical resistance. AC motors that are utilized in dock levelers and scissor lifts, perform best with line loss less than 5% of the motors requirement. It’s important to determine the distance from the power source to the motor, identify the voltage specified and then calculate the proper gauge off wire to minimize line loss to the electric motor. Line loss is generally more of a concern with lower voltages such as 115/1/60. Line loss concerns increase as the amperage draw increases. With Loading Dock and Lift Equipment, increased hydraulic power unit motor horsepower sizing is the most common reason for amperage draw increases. For additional information http://www.energyaction.com.au/line-loss-factors.html