TRIME
®
-PICO T3/IPH44 IPH50 Version 2_0
2017-05-30
Page 22
9
Instructions for Access Tube Installation
The following instructions should be taken account of:
The ramming head, the TECANAT
access tube and the internal steel
guide and protection tube are one
unit.
The internal protection tube has to lie
on the cutting shoe of the access
tube, before it can be fixed with a
screw to the ramming head. This fixa-
tion is necessary to secure the shoe
against being squeezed out by the
returning force of the hammer-blow.
The access tube, however, is fixed to
the ramming head by the clamp de-
vice. Both fixation screw and clamp
device should be controlled during
the installation process and be re-
adjusted with the adjustable levers if
necessary.
The screw auger, that moves easily
within the guide tube is used to drill
out soil to about 0,1m below the cut-
ting shoe. Depending on soil homo-
geneity, the tube is then hammered
5-10 cm into the soil with a plastic
hammer (with open support pillar
clamps!). The guide tube is not used
for making the hole in the first in-
stance because this could result in soil
compaction around the hole, which
would lead to higher measurement
values.
The access tube support pillar with
three ground anchors avoids vibra-
tions that would cause air gaps. Then
the clamp of the support pillar must
be closed and the soil can be re-
moved with the screw auger. When the tube reach the support pillar, it must be removed and
the access tube can be inserted to the final depth without the support pillar.
A plastic collar should be mounted around the tube to prevent water from running down the
tube wall and a plastic cap to protect the tube against rain.
Ramming Head
with Clamp Device
Pull for best
position
Fixation-
Screw
