ABB LWT300 Series User Manual page 29

3 Place the instrument head on top of the coupler-head adapter (see Figure 15).
NOTICE
As much as possible, avoid using PTFE tape on the threaded connection as this type of
tape can affect the ground connection between the coupler and the adapter. If PTFE
tape is used, it shall be used in a very thin layer to avoid electrically isolating the coupler
from the adapter.
—
Figure 15 Positioning the instrument head on the adapter
Head adapter
security screw
4 Tighten by hand the head adapter on the head-coupler adapter.
5 Re-tighten the head adapter security screw to secure the head adapter.
6 Completely unwind the coaxial cable.
Head adapter
25
Installing the LWT