Model 3440 4–23
Figure 10. Drill Rod Positioning
Remove the drill rod by pulling straight up and twisting the
extraction tool. Do not loosen the drill rod by tapping
from side to side with a hammer. This will distort the hole
or cause loose material to fall into the hole.
To ensure accurate placement of the gauge, before removing
the scraper plate, mark the test area using the drill rod as
shown in Figure 11.
Carefully pick up the scraper plate and place the gauge on
the surface prepared by the plate. Insert the source rod into
the hole made by the drill rod. Use care when inserting the
source rod; do not to disturb the soil around the hole.
Lower the source rod into the hole. Release the trigger and
lock the source rod into the correct position. A click should
be heard when the source rod is locked into position.
Gently slide the gauge toward the keypad so the source rod
makes contact with the wall of the hole.
To Next Page
Loading...
Need help?
General
