Allied 5500, Техническое руководство, Страница: 25 / 68

6.2.7 Piercing The Underground Hole
1. To “wet” the air line, pour a small
amount of Allied Hog Wash into air
line at the compressor connection and
connect it to piercing tool air line.(Re-
fer to Section 7.0 Lubrication.)
2. Quickly turn on the air supply and im-
mediately reduce air pressure to ap-
proximately 2/3 of full open and start
piercing tool penetration into the
ground. It is necessary to apply force in
the direction of motion.
3. After approximately 1/3 of the body
length has penetrated into the forward
wall of the entrance pit, check align-
ment on target and pitch using suitable
level. Refer to paragraph 6.2.6, step 4
for the proper pitch.
4. Restart air supply to piercing tool. If
tool fails to start, simply open and close
the quick-acting valve to create pulses
of air to start the tool.
5. Continue checking alignment and
pitch (steps 3 and 4) until the Hole-Hog
is completely enveloped by the forward
wall of the entrance pit.
6. Increase air pressure to 100 psi
(7.0kg/cm
2
) and complete hole penetra-
tion. Never exceed 100 psi (7.0kg/cm
2
).
Pressures above 100 psi (7.0kg/cm
2
)
decrease tool life.
7. Monitor Hole-Hog progress along the
piercing path. Use the 2-foot tape
markers on the air hose to estimate the
length of hose used and progress along
the path.
8. The Hole-Hog can be stopped or de-
flected from its path by some under-
ground obstacles.
•
If the Hole-Hog stops moving along
the path, it has hit an obstacle.
•
If total path marker on the air hose is
reached but the Hole-Hog has not
reached the target or exit pit, the
Hole-Hog has been deflected by an ob-
stacle.
In either case:
a. Retrieve the Hole-Hog by reversing
Hole-Hog direction as described in
paragraph 6.2.8.
~
WARNING
Use extreme caution working with
electric and gas lines. Cutting a
utility line could cause serious in-
jury or death
Verify location of all utilities before
starting a second hole.
b. Pierce another hole that will bypass
the object, repeating steps 6.2.6 and
6.2.7. In extreme circumstances it
may be necessary to relocate the en-
trance or exit pit.
9. When the Hole-Hog reaches the exit pit
or target, stop compressed air delivery
by closing the air supply valve.
DO NOT REMOVE THE HOLE-HOG
from the exit pit or pierced hole.
10. Before removing the Hole-Hog from
the exit pit or pierced hole, verify the
means by which the pipe, tube, cable,
etc. will be installed in the pierced hole.
Refer to paragraph 6.2.9 Install Mate-
rial in the Pierced Hole.
A
LLIED Model 5500 Hole-Hog
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