TM 5-3805-280-10 Safety be ready to activate the cabin emergency stop if need be. communication must be established in a reli- able manner. Make sure any hand signal will be perfectly understood. the operator must make sure the following safety decal is affixed on the drill guide to warn the service man of risks incurred. DRILLING Before starting work, the operator will make sure there are no buried electrical, gas, water or other pipes or lines. ! ! # Always be aware of previously drilled holes, and where they are located : any open hole can cause se- vere injury to the operator or someone else. The loss of tools, drill rods, drill bits or any other item can occur. "# !
# the service man must be informed about the use of the emergency stop mounted on the guide. Always have the cabin door closed and the dust collector running when drilling to prevent respiratory damage. Keep all work areas clean and orderly. ROCK DRILL MAINTENANCE $ " ! # Keep hands, arms, legs and clothing away from moving or rotating parts. # " # " Only use genuine replacement parts. When rising the guide, take care of any overhead lines. Stopping the drill for mainte- nance or bit change etc... Always maintain a minimum distance of 25 Ft. (7.6 m) distance between the machine and any overhead lines during any operation.
Prior to leaving the operators compartment, the excavators hydraulic safety arm must be raised to lock in the machines safety switch. This renders all controls inoperable thus preventing any unwanted movement. The operator will make sure that everybody stands clear from the machine in operation and stays at a distance of 7 meters (25 ft.). Nevertheless, some operations may need people to enter the restricted area (checking of coupling tem- perature during feed thrust adjustment for instance). Hydraulic cylinder The hydraulic cylinder is equipped with 2 load– sustaining valves. On such an occasion :
The load–sustaining valves allow the disconnect- ing of the hydraulic hoses from the cylinder if they need to be changed. But : the operator must supervise, from the cabin, the safety of the service man doing the work. He must 1-24