12. Another solution is to have a Homelite III-B blower (or equivalent) at the cut end of the
trench pulling these fumes from the cut as the electric blower blows them out of the pipe.
This method does not tie up production and gets the job done more efficiently.
13. In summary, if all of the above fail to solve this problem, use the laser in an over-the-top setup.
Model 929 Blower
Operating Instructions:
1. Use a separate 12-volt automotive battery to power the blower.
2. Point the nozzle into the pipe to create a corkscrew effect.
This is the most effective way to create temperature stabilization.
3. Insure the air intake is not blocked and the 929 is not set in water.
The support handle/cord wrap bracket is on the opposite side of
the air intake. This handle can hook over a manhole step to keep
the unit out of water in the pipe.
4. Start the blower with the first section of pipe. Use the table on the blower to determine the
blower speed from the length and size of pipe being installed. Although very unlikely, be aware
too much air can also cause refraction.
Summary of Contents for DG613
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Page 5: ...Illustration Set Up A 1230 B 1237 C 1248 1 2 3 4 5...
Page 32: ...Calibration Checking Calibration...
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