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Idiomas disponibles
Idiomas disponibles
If the packer is not properly supported, the patch
can bulge into the unsupported area and/or the
packer can be damaged or burst. In these cases,
the proper containment material must be used
(see "Containment" section).
• Pipe size(s), type(s), transitions, traps, shifted pipe
and other obstacles present that could prevent
packer insertion or cause damage. The transitions
in pipe system may require a smaller size packer.
• Best access to area to be patched. In some cases,
it may be necessary to have access on both ends
of the pipe to be patched to allow the packer to be
pulled into position. Determine how the packer will
be moved into position. A test insertion is required
to confirm that the packer can be placed properly.
• Visual inspection of the pipe is required. Multiple
visual inspections will be required throughout the
patching process. While inspecting, determine
the temperature of the pipe to be patched. If the
pipe is hotter or cooler than the resin application
temperature (41°F to 68°F (5°C to 20°C)), the resin
set time will be affected. Lower temperatures will
increase set time and higher temperatures may
decrease set time.
2
CLEAR ALL BLOCKAGES AND CLEAN THE LINE WALL-TO-WALL
2. Thoroughly clean the pipe system. Remove all debris,
roots and other materials that can block the move-
ment of packer into place or damage the pipe patch
and equipment inside pipe. (Figure 7-2). Pipe should
be cleaned to the pipe base material. When working
in PVC or other plastic pipe, in addition to cleaning
to the base material, the cleaning method needs to
"roughen up" the base material. This "roughening up"
helps to provide mechanical bonding of the patch to
the pipe.
Clean past the damage to allow water and debris
to drain from the area. Area should be flushed and
fluid flow shut off. Pipe can be patched with small
amounts of water in the drain, but less water in the
area is better. While the drain does not need to be
perfectly clean, any material left in the drain may
make the patching process more difficult and prevent
proper sealing.
999-995-411.10_REV A
3
RE-INSPECT THE LINE TO ENSURE IT IS FREE OF DEBRIS AND
CONFIRM LOCATION AND SIZE OF REPAIR
3. Reinspect the drain with the camera. Confirm that the
drain is properly cleaned and meets the requirements
for patching. Ensure that the pipe is free of sharp
features that could damage the packer, such as
broken sections of pipe. Position the camera head
at the center of the damaged area to be patched
and mark the camera push cable (for example with
tape around the push cable, See Figure 8) near the
pipe entrance. This will be used to determine the
measurement to the damaged area for patching. See
Figure 7-3.
4. In an open area, layout the camera push cable so that
the mark on the push cable is visible. Measure the
distance from the camera head (patch location) to the
mark on the camera push cable to confirm how far into
the drain the patch will be placed. See Figure 8.
5. Determine if the packer will be put in place using the
air push rod, a pull rope, or a combination of both. A
pull rope is always used at the same end as the air
push rod. If using a second pull rope from other side
of the packer, route the rope through the pipe. NOTE:
The push rods cannot be used to push through P
traps or bends in pipe size 3" or under. In this case,
the lockable air hose will be attached to the back of
the packer with a pull rope on each end of the packer.
Air Push Rods
Assemble enough air push rods to reach the patch
point. Lay the assembled packer and attached air
push rods next to the camera push cable. Mark the
air push rod at the same distance as the mark on
the camera push cable, see Figure 8. This will help
properly locate the patch in the pipe. Remove one
air push rod that will later be attached to the packer
when installing the packer sleeve.
Pipe Patch
9
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