Nexen SW100 803354 - Manual (Page 7)

7 FORM NO. L-20361-E-0713
INSTALLATION PRECAUTIONS
TENSION SENSOR INSTALLATION
The mounting holes should be drilled so the cable connector
is in line with the resultant web force and will not interfere
with the four sensor mounting bolts. The cable connector
should bisect the web wrap angle. If present mounting
holes are to be used or if for some reason new holes
cannot be drilled, the split flange can be rotated relative
to the sensor body. In order to rotate the split flange, remove the sensor from
the machine frame. Loosen the two bolts clamping the
split flange to the sensor body. Rotate the split flange to
the desired position and then retighten the two clamping
bolts. If the cable connector is not lined up with the web
force, there will be some loss in sensitivity.
SENSING ROLL INSTALLATION
After positioning the Tension Sensors, securely tighten
the mounting bolts.
Check to see the Tension Sensors are parallel and in line.
The Tension Sensors are designed to accommodate some
frame to frame misalignment.
NOTE
Misalignment should be less than 1 degree.
Remove the sensor shaft caps by removing the four cap
screws on each sensor.
Mount the tension sensing roll assembly in the Tension
Sensors. Clearance between the end of the shaft and
the sensor body should be from 1/16-1/64" [1.6-0.4 mm].
If shaft bushings are required, use split bushings of the
correct length. Do not overhang the sensor I.D. and O.D.
Do not use solid bushings. The lengthwise split in the
bushing should be directly in line with the gap between
the sensor cap and the sensor head. Securely fasten the
sensor caps as shown in Figure 4.
FIGURE 4
CAUTION
To ensure proper installation and operation of the
system, the following steps should be performed in
sequence. Failure to do so could seriously damage
the Tension Sensors and void the warranty.
Always install, orient, and firmly bolt down the
sensor BEFORE installing the tension sensing roll.
CAUTION
When disassembling or installing, DO NOT
remove the sensor and the tension sensing roll as
an assembly –remove the roll first before loosening
the sensor mounting bolts.
DO NOT rotate Tension Sensors (for orientation)
with the tension sensing roll installed. Damage
may result.