Reinstall The Unit Into The Tank; Remove The Enclosure From The Casing; Figure 60: Removing Electronic Enclosure From Casing - ABB LevelMaster 7100 User Manual

Reinstall the unit into the tank

To reinstall the unit:
1. Ensure that the cover is secured back on the base of the electronic enclosure.
2. Lift the unit from the floor and prepare to reinsert it into the tank.
3. Once positioned for reinsertion, slowly lower the LevelMaster down through the hole in the tank. Make sure that the unit is
vertical until it is resting on the bottom. If there is sludge at the bottom, work the unit up and down a few times to reach the
bottom.
4. Screw the tank port bushing into the tank port opening.
5. Tighten the nut on the cord connector.
6. Carefully straighten or position the lose wires at the end of the conduit.
7. Plumb the cable or conduit into the electronics enclosure ensuring that the wires go through the holes and into the inside of
the enclosure. If needed, pull the wires gently to make sure they can be connected to the electronics board.
8. Restore field wiring as described in section 8.3, Restore field wiring.

Remove the enclosure from the casing

Full removal of the enclosure is required to replace the casing (due to sensor assembly replacement). It is assumed that the
LevelMaster is out of the tank.
To remove the enclosure from the casing:
1. Once the unit is out of the tank and positioned horizontally on the supports, remove the enclosure cover again.
2. Remove the sensor connector from the electronics board.
3. Remove the existing electronics board and place in a safe place (store in an anti-static bag if one is available).
4. Hold the casing firmly with one hand near the top cap (Figure 60).
5. Hold the enclosure with the other hand and rotate counter-clockwise. Do not stop holding the enclosure as it detaches from
the casing to avoid pulling the sensor cable.
LevelMaster 7100 User manual 2105835 Rev AA | 68

Figure 60: Removing electronic enclosure from casing

ELECTRONICS
ENCLOSURE
TOP CAP