Gardner Bender BV208DA - Manual (Page 6)

6
VII. Use and Operation
The primary purpose of the GB/JetLine ® Conduit Fishing
System is to place a pull line in the conduit by the
quickest and easiest means available. The GB/JetLine
®
Blower and Blo-Vac™ systems are low pressure, high
volume machines that are easy and convenient to use.
A. Blowing Line in the Conduit
The GB/JetLine ® Blower and Blo-Vac™ systems are
designed to blow line in a “sealed” conduit such as EMT
conduit with compression type couplings, rigid conduit
with threaded joints, or PVC conduit with adhesive
bonded joints. These types of conduit require very
little effort to install a pull line with the Blower or
Blo-Vac™ system.
There are some conduit runs that will be difficult or
impossible to blow a line in, such as:
1. Conduit containing hard packed sand, silt, debris
or concrete.
2. Conduit containing water with a head greater
than the maximum water lift of the Blower or
Blo-Vac™ system.
3. Conduit with leaking or separated joints.
4. Conduit with two sizes of duct connected by
a reducer.
5. Conduit with unsealed set screw couplings.
6. Small diameter conduit of several hundred feet
with multiple bends.
Let Gravity Help
When blowing line in conduit of tall buildings or
underground duct, start at the highest elevation of the
conduit entrance. In underground duct; water may have
accumulated in low points of the run, and the blower may
not be able to force it out. Start at the highest point.
B. Preparation
It is helpful to know the purpose for which the line is to
be used once it has been blown into the conduit.This will
aid the user in selecting the appropriate line for
the job.
Knowing the approximate length of the conduit run will
prevent selecting a line too short for the run. For
example, if lightweight pull line is being placed in
3 ⁄ 4 ”
conduit with a estimated length of 195 to 200 feet, select
a 300 ft. Power Saver™ line package for the run. An
alternate solution would be to use a
3 ⁄ 4 ” foam line carrier
pulling bulk nylon line. Either selection would insure an
adequate length of line.
C. Selecting the Pull Line
It is not possible to foresee all conduit situations that may
be encountered, therefore, the following is presented as
a guide in selecting pull line. Determine which best fits
the situation; whether the line is to be used for conduit
identification, pulling in a larger line or rope, pulling in
wire or for wire pulls at a later date.
1. Identification of a conduit termination where multiple
conduit runs originate from a single location.
Recommended line: Power Saver™ Line Packages
or Bulk Nylon Line.
2. Placing a line in the conduit for use at a later date.
Recommended line: Small conduit 1 ⁄ 2 ”, 3 ⁄ 4 ” and 1” —
Power Saver™ Line Packages, Bulk Nylon Line or
PL232 Pull Line. Larger conduit 1
1 ⁄ 4 ” through 6” —
Tag-Along™ Line Packages, PL232 or PL235.
3. Pulling in larger line, rope or steel winch cable.
Recommended line: Small conduit — same as
above. Larger conduit PL232, PL235 or Poly Rope.
4. Pulling wire in conduit. Recommended line: PL232,
PL235 or Poly Rope
D. Power Saver™ Line Packages
The Power Saver™ line package is the easiest and
most versatile line that can be installed in conduit. The
self-contained (no line carrier needed) 17 lb. breaking
strength nylon line package comes in different lengths
sized for
1 ⁄ 2 ”, 3 ⁄ 4 ” and 1” conduit. It dispenses a line as
the package is blown or vacuumed through the conduit.
The line may be used for identification of the conduit
exit, pulling in a heavier pull line (PL series pull line
or small rope).
Table 3
Cat. No. Conduit Size Length Ft.
LP2150 1 ⁄ 2 ” 150’
LP3200 3 ⁄ 4 ” 200’
LP3300 3 ⁄ 4 ” 300’
LP3450 3 ⁄ 4 ” 450’
LP4200 1” 200’
LP4300 1” 300’
LP4450 1” 450’
Power Saver™ Line Packages
FIG. 5
Power Saver™ Line Packages
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