Ditch Witch JT100, Operator'S Manual

Page: 135 / 268

Conduct a Bore - 134
JT100/JT100 All Terrain Operator’s Manual
Remove Pipe
Begin Backream
1. After backream assembly is attached to pipe, tracker operator should:
• leave pit and stand away from the exposed drill string.
• if using DrillLok
®
mode, turn on DrillLok remote button to enable drilling unit thrust/pullback and
rotation.
• if not using DrillLok, mode communicate to drill operator that backream string is clear.
2. Turn on drill fluid and pressurize drill pipe. Verify that jets are open.
3. Without rotating, slowly pull back until reamer contacts bore hole opening. Do not lodge reamer in
hole.
4. Begin slow rotation and pullback.
5. Increase drilling fluid flow and rotation as the backream string enters the ground.
6. If tracking backream, tracker operator may continue tracking when the backream string is no longer
visible.
Remove Pipe
1. Enable automated pipeloader system (automated pipeloader control only). See page 125.
2. Stop carriage when pipes are aligned in wrenches.
3. Clamp pipe in front wrench. See page 120.
4. Clamp and rotate rear wrench to break front joint. See “Rear wrench clamp switch” on page 37 and
“Rear wrench rotation switch” on page 37.
5. Disengage rear wrench and rotate clockwise back to the original position.
6. Grip pipe.
NOTICE: If engine is shut off during backreaming, drill pipe clamped by wrenches but not connected to
SaverLok
®
body can be pulled downhole as vise wrenches loosen.
Manual Pipeloader Controls Automated Pipeloader Control
• Open grippers.
• Lift pipe off shuttles.
• Extend shuttles to spindle position.
• Close grippers.
• Lower lifters.
• Press resume.
• Green control cycle light will come on,
shuttles will extend, grippers will grip, pipe
lifters will lower, and then green control
cycle light will flash.