12 Maintenance
12.1 Replace sensor circuit board
The Rosemount
™
56 transmitter used with the Rosemount TCL requires little routine
maintenance.
Clean the transmitter case and front panel by wiping with a clean soft cloth dampened with
water only. Do not use solvents, like alcohol, that might cause a buildup of static charge.
The sensor circuit board (PN 24203-01) is replaceable. If you have a dual input transmitter,
consult the Rosemount 56 Reference Manual for the part number of the other board.
WARNING
Electrical shock
Disconnect main power and relay contacts to separate power source before servicing.
To replace the board:
Procedure
1. Turn off power to the transmitter.
2. Loosen the four screws holding the front panel in place and let the front panel drop
down.
3. Loosen the gland fitting and carefully push the sensor cable up through the fitting
as you pull out the circuit board.
4. Once you have access to the terminal strip, disconnect the sensor.
5. Unplug the sensor board from the main board. See Figure 12-1.
6. Slide the replacement board partially into the board slot. Plug the sensor board into
the main board and reattach the sensor wires.
7. Carefully pull the sensor cable through the gland fitting as you push the sensor
board back into the enclosure.
8. Close the front panel.
9. Turn on power.
Reference Manual Maintenance
00809-0200-3415 January2023
Rosemount TCL 56 51
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