ABB LevelMaster 7100, User Manual, Page: 77 / 100

LevelMaster 7100 User manual 2105835 Rev AA | 67
Restore field wiring
Restoring field wiring is required if the unit has been removed from the tank. This procedure reinserts individual wires back into
the connectors which were removed to allow the detachment of the conduits from the enclosure. It is assumed that the wires
and their position were identified (labeled) when removed. If unable to identity the position of each wire refer to section 4,
Wiring .
To rewire:
1. Re-insert wires on the communication and power connector(s).
2. Re-insert the connector(s) to the board terminal(s).
3. Reconnect or rewire the LevelMaster to the remote controller, flow computer or independent power source as applicable:
a. If powered from the serial (COM) port on a remote controller or flow computer, re-connect to that port.
b. If connected through barrier board, re-connect to the appropriate ports on the barrier board.
4. Verify that measurements are being received and displayed by the LevelMaster application on PCCU.
Remove the unit from the tank
Full removal from the tank is required to change the floats or the internal sensor assembly.
To remove the unit from the tank:
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 on the electronics enclosure (to keep the electronics board protected if it was not removed).
4. Loosen the nut on the cord connector (Figure 59).
TANK PORT
BUSHING
CORD
CONNECTOR
TANK
ELECTRONICS
ENCLOSURE
NUT
Figure 59: Removing the unit from tank
5. Unscrew the tank port bushing.
6. Pull the unit up until it is completely out of the tank.
7. Lay the unit on the ground using the wooden blocks underneath for support. (If no wooden blocks are available use any
stable and even support to keep the unit from rotating while in a horizontal position).
8. If changing floats or the internal sensor assembly, proceed to the appropriate procedure.