Ditch Witch OnGrade - Manual (Page 28)

OnGrade Operator’s Manual
Conduct OnGrade Bore - 27
OnGrade Process Overview
CMW
6. Drill into the start pit and verify that drill head is at the proper depth.
7. Take measurement from the laser plane to the top of the beacon housing using surveying rod and
laser receiver that came with the laser. See laser instructions.
8. Mount tracker on grade pole and turn on and zero the grade pole. See “Zero the Grade Pole” on
page 34.
9. Drill past start pit until a depth reading can be taken.
Turning shaft will kill you or crush arm or leg. Stay away.
NOTICE:
• Tracker operator and drill operator should maintain two-way communication.
• Keep everyone clear of the exposed drill string.
• No one should enter pit until clear communication is given by the drill operator that the drill unit
is shut down. If using tracker control (see drilling unit), do not enter pit until tracker control is
turned off and green light on drill unit is lit.
• Drill operator should be instructed to discontinue drill string rotation as soon as drill bit exits the
bore. Use thrust only to extend drill string beyond exit hole.
Incorrect procedures could result in death, injury, or property
damage. Learn to use equipment correctly.
NOTICE: Follow U.S. Department of Labor regulations on excavating and trenching
(Part 1926, Subpart P) and other similar regulations
NOTICE: The Laser Reference AS2 is a Class II laser. The normal blink, or eye-aversion, reflex is
sufficient to prevent optical damage due to incidental viewing of a Class II laser. Do not look or
stare into laser beam.