Allied 4001, Техническое руководство, Страница: 21 / 73

SECTION 6.0 OPERATION
6.1 Operating Overview
There are 9 steps in piercing an under-
ground hole with a Hole-Hog :
•
Review all safety precautions.
•
Select a safe path for the hole to be
pierced.
•
Dig an entrance pit at one end of the
path.
•
Dig an exit pit or set a target marker at
the other end of the path.
•
Prepare the Hole-Hog and air supply
lines.
•
Place the Hole-Hog in the entrance pit
and align it with the target or exit hole.
•
Operate the Hole-Hog until it completes
the hole.
•
Remove the Hole-Hog.
•
Install material into the pierced hole.
6.2 Operating Guidelines
When performing each of the the steps
listed in 6.1, pay particular attention to the
related guidelines below.
6.2.1 Safety Precautions
Review the safety sections, 4.0 and 5.0, of
this manual. Perform all operations ac-
cording to the precautions and recommen-
dations described in these sections.
~
WARNING
Use extreme caution working with
electric and gas lines. Cutting a
utility line could cause serious in-
jury or death.
6.2.2 Select a Safe Piercing Path
Plan and mark the complete piercing path
and the depth of the hole prior to starting
Hole-Hog operation.
1. Locate all utility lines: water, electric,
gas and sewer lines, in the area to be
penetrated.
2. Select the shortest possible path under
the obstacle (road, walk, driveway,
etc.).
3. Determine the depth (elevation) of the
hole to be pierced.
a. Refer to Section 3.2 Minimum Rec-
ommended Operating Depths.
b. Identify the type of soil to be pierced
and the minimum depth of the hole.
c. If possible, select a hole depth well be-
low the minimum. In some soils, the
Hole-Hog may raise while piercing a
shallow hole.
d. When the piercing path is very long
through low density soil, the hole
depth should be as deep as practical
for the application.
e. Do not attempt to pierce a hole
through frozen ground. However, a
hole can be peirced under the frost
line.
A
LLIED 4000 Series Hole-Hog
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