Emerson Rosemount TCL - 9.3 Calibrating total chlorine; Chapter 10 Maintenance; 10.1 Transmitter

12.3.5 Replacing the air pump
Complete the following steps to replace the air pump on your total chlorine system.
WARNING!
HAZARDOUS VOLTAGE
Can cause severe injury or death. Disconnect power before servicing.
Procedure
1. Disconnect power to the transmitter.
2. Refer to Figure 12-12. Disconnect the reagent and air injection tubes. Disconnect the
suction and discharge tubing by turning the Luer fitting in the direction shown in the
figure. Disconnect the air pump inlet tubing from the barbed tubing in the bottom
of the enclosure.
Replacing the Air PumpFigure 12-12:
3. Remove the four screws (circled in Figure 12-12 and Figure 12-13) holding the air
pump access panel. Pull out the pump and panel.
Air Pump Access PanelFigure 12-13:
4. Disconnect the air inlet and outlet tubing from the air pump.
Maintenance
Manual 63