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disconnect from each other and may be disconnected
underground.
1. When the area is clear of people, disable the exit-side
lockout using the exit-side-lockout transmitter
(the OK-to-Drill light on the control panel should
illuminate); press the exit-side-lockout, reset switch on
the control panel.
2. Turn on the drilling fluid pump switch and allow the
fluid pressure to build to 200 to 300 psi.
3. Rotate the drill head until the bit is at the 6 o'clock
position.
4. Move the carriage forward driving the bit straight into
the ground until the entire dill housing is underground.
5. Continue pushing forward and begin rotating the drill
spindle clockwise to initiate the drilling action.
6. Drill forward until the carriage reaches the end of the
frame, then retract it about 6 mm (1/4 inch).
Adding Drill Pipes
1. Align the pipe joint in the wrench assembly.
2. Close the lower wrench (stationary wrench) onto the
first pipe.
Note: The drilling fluid will automatically shut off
when you activate the lower wrench (makeup/breakout
wrench).
3. Pull back the carriage approximately 12.7 mm (0.5
inch).
Note: This will allow the carriage to float, and will not
damage the pipe threads.
4. Rotate the drill head counterclockwise until the spindle
is completely removed from the pipe.
5. Spray the spindle with thread joint compound, then
return the drill carriage to the upper end of the frame.
6. Rotate the pipe gripper to the closest row of pipes in
the pipe holder.
7. Lower a pipe into the pipe gripper and grip it in place.
8. Rotate the pipe gripper toward the thrust frame, and
extend it until the pipe is centered over the frame and
in front of the spindle on the drill carriage.
9. Rotate the drill spindle clockwise and move the carriage
slowly forward to insert the spindle into the female end
of the pipe
(Figure
Note: Tighten the joint until the pipe is rotating with
the spindle.
10. Move the drill carriage slowly down the frame
until the male threads on the pipe are under
the thread-joint-compound applicator and apply
thread-joint compound to the threads.
11. Rotate the drill spindle clockwise and move the carriage
slowly forward to insert the male end of the pipe into
29).
the female end of the previous pipe. Tighten the joint
until you reach no more than 2,304 N-m (1,700 ft-lb).
12. Release and retract the pipe gripper, rotating it all the
way out past the third row of pipes.
Important: Ensure that you fully retract the
pipe gripper and rotate it all the way out or the
carriage may collide with the gripper, damaging
the machine.
13. Release the wrench and continue the drilling operation.
Steering the Drill Head
The drill bit is shaped like a wedge, angled from one side of
the bit to the other. When you push the bit through the soil
without rotating it, it will veer toward the direction the wedge
is pointing. When you rotate the pipe and drill head it bores
through the soil in a straight path.
1. Drill bit
When drilling, the receiver operator follows the drill head as it
progresses. The receiver receives signals from the sonde in
the drill head identifying its position, depth, pitch, direction,
transmitter temperature, and orientation in the soil. The
remote console is a screen that remains near you (the drill
operator) to show you the information from the receiver
while drilling so you can make steering decisions.
For detailed information on using the receiver and remote
console to guide the drill head, refer to the Operator's Manual
that came with your receiver.
Important: Do not steer the drill head more than 20 cm
(8 inches) off center for every 10 feet of forward travel. If
you steer more than this you will damage the drill pipes.
Boring the Horizontal Shaft
After creating the entry shaft, you gradually steer the drill
head up while pushing forward, following the planned bore
path. When you reach the desired depth, level out the drill
head and bore the horizontal shaft, adding pipes as you go.
While boring, pay close attention to the information relayed
back to you by the receiver operator about the status and
location of the drill head to ensure that you are following the
planned path.
Important: While drilling, watch the sonde temperature.
All sondes have a maximum temperature above which
they will be damaged. Friction between the drill head
and the soil will cause the temperature to raise. To
reduce the temperature, slow down, decrease forward
27
Figure 31
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