Figure D-2 NEMA 4X Mounting Screws and Cable Locations
NEMA 7 Model:
1. Disconnect AC power from the Level Plus monitor at the main fuse panel.
2. The main electronics assembly must be removed from the NEMA 7 enclosure to gain access to the EPROM
devices. Follow steps 3 through 8 to remove the main electronic assembly.
3. Disconnect the AC power terminations at terminal block TB1.
4. Disconnect any customer terminations to the relay contacts (TB3) and to the communication interface (TB2).
Terminal blocks TB2 and TB3 are of the pluggable type.
5. Disconnect the tank gauge field wiring from intrinsic safety barriers.
6. Remove the six mounting screws (and lock washers) that secure the electronic assembly to the aluminum brack-
ets in the NEMA 7 enclosure. See illustration D-3. Do not remove the four screws that hold the aluminum brack-
ets to the back of the NEMA 7 enclosure.
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