WIRELESS TECHNOLOGY & CRANE INSTRUMENTATION DIVISIONS GS085 Radio Anti-Two-Block Installer and user guide WARNING! Carefully read and understand this manual and the GS320/GS550/GS820 Installer and User’s manual before proceeding. Manual before proceeding. IMPORTANT! Refer to the “GS375/GS550/GS820 Display & GS Series Sensors - Installer and User’s Manual” for complete information about installation, operation, maintenance, certification and warranty. GM085_ENG_rev.docx www.loadsystems.
BEFORE PROCEEDING Read and understand the following: For your safety and that of the people that come into contact with LSI products, understand the significance of the instructions included in this guide, respect all laws and regulations and comply with applicable standards. Pay particular attention to text boxes and the following words: WARNING! Warning: this denotes an instruction that if not complied with may lead to serious injury or death.
1. Overview The anti-two-block switch comprises of the radio transmitter, battery and switch mechanism. The switch mounts at the boom tip. A weight and chain assembly is attached to the bottom piston rod of the A2B switch. When the weight assembly is lifted by the ball/block, the internal switch in the A2B will trip an alarm, warning the operator of a two-block event. The switch mounting bracket design allows the switch to rotate in two axes.
more than 13lb and the chain weight must not exceed 2lb. 4. Chain length adjustment Figure 5: Jib, rooster or other extension: anti-two-block switch placement for single part of line operation only For fast line weight installation place the anti-twoblock switch mounting bracket directly below the sheave center as low and as close to the edge of the sheave as possible.
that determined at the minimum boom angle. Refer to the GS375/GS550/GS820 manual for how to add this sensor to the sensor list to be displayed. 6. Security The radio anti-two-block is equipped with a failsafe power system allowing it to instantaneously communicate an alarm via radio signals if the battery of the power circuit is rendered inoperative. Figure 8: Chain length adjustment - Maximum boom angle Chain length adjustment No.
8. FCC and IC – Instructions to the User This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radiofrequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
LSI Contact Information Technical support : LSI Technical Support is available 24 hours a day, 7 days a week from our Houston and Dubai locations. Please direct all technical support questions to either of these locations or contact us via email: techsupport@loadsystems.com GM085_ENG_rev.docx www.loadsystems.
