ABB LWT300 series, User Manual

Page: 21 / 108

Installing the LWT
17
Assembling a segmented probe
Segmented probes are rod probes divided in 1-meter (3.3 feet) segments that must be assembled on
site. Each segment is inserted into the vessel at the moment of assembly, starting with the end-of-
probe segment. The following explains the assembly procedure.
To assemble a segmented probe on site:
1 Slide in the head lock on the set-screw fixed on one of the probe segments.
2 Screw the female end of the end-of-probe segment on the male end of the first segment and tighten
by hand.
—
Figure 5
Assembling two segments of a segmented probe
Lock
3 Use two wrenches (each one holding the probe slot of the segment) to apply the recommended
torque (see below) in opposite directions at the same time (see Figure 5 on page 17).
NOTICE
There are two sizes of head locks: 8.9 mm (0.35 in) and 13.5 mm (0.53 in). The
recommended torque, as specified by the manufacturer, is as follows:
• For the 8.9 mm lock: 2.8 N·m (2.1 lbf.ft).
• For the 13.5 mm lock: 13.5 N·m (10.0 lbf.ft).