ABB LevelMaster 7100, Руководство пользователя, Страница: 89 / 100

LevelMaster 7100 User manual 2105835 Rev AA | 79
8. Proceed to section 8.14.3, Update configuration to reflect sensor change .
Replace sensor assembly only (no casing)
This procedure requires pulling the internal sensor out of the existing casing and inserting the replacement sensor assembly into
the casing.
CAUTION – Equipment damage: With this procedure, the sensor assembly coil is exposed when removed from
the casing. When possible, it is recommended that replacement sensors be ordered from ABB to follow the
procedure described in section 8.14.1,
Replace sensor assembly and casing .
If only the sensor assembly is available, handle with extreme care to avoid damage.
To replace only the internal sensor assembly:
1. Remove the cover as described in section 8.1, Remove the enclosure cover .
2. Remove field wiring as described in section 8.2, Remove field wiring.
3. Reinstall the cover back on the enclosure to protect the board during extraction from the tank.
4. Remove the unit from the tank as described in section,
5. Remove the enclosure as described in section 8.6, Remove the enclosure from the casing .
6. Remove the rectangular foam pad at the top of the casing, folded around the sensor.
7. Save the foam pad to use with the new sensor assembly.
8. Take hold of the cable tie that should be at the top of the sensor assembly. Use it to pull the assembly out far enough so
that a hold can be established on the sensor. Do not pull on the wire cable.
9. Pull the assembly all the way out.
10. Place the faulty sensor assembly in a safe place.
11. Insert the bottom of the new sensor assembly through the top of the casing.
12. Feed the assembly until the end is within a few inches of the top of the casing.
13. Push the sensor in until it reaches the end of the casing (bottom), leaving the wire cable and connector sticking out of the
top of the casing.
14. Bend and push the cable tie in out of the way.
15. Insert the foam at the top of the casing and fold it around the sensor.
16. Reinstall the enclosure back on the new casing as described in section 8.7, Reinstall the enclosure on the casing .
17. Proceed to section 8.14.3, Update configuration to reflect sensor change .
Update configuration to reflect sensor change
Changing the sensor assembly requires configuration update. Calibration may be required too.
To update configuration after sensor assembly change:
1. Connect to the LevelMaster as described in section 8.8, Establish local communication with electronics board .
2. When the communication is succesful and the monitor tab displays, click the Setup tab.
3. Under Make Hardware change, click Hardware change .
4. In the Select category drop down list, click New Sensor Assembly .
5. Click Next and provide the required input every time a prompt displays. The required tasks to update are automatically
programmed in MasterLink.
6. If prompted to download a configuration file, type the path and name of the file or use the Browse button to locate the file.