Emerson Rosemount TCL - 7.5 Configuring the measurement

12.3.6 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 12-11. 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.
Figure 12-11: Replacing the Air Pump
A. Sample pump
B. Luer fittings
C. Air injection
D. Reagent injection
3. Remove the four screws (circled in Figure 12-11 and Figure 12-12) holding the air
pump access panel. Pull out the pump and panel.
Figure 12-12: Air Pump Access Panel
4. Disconnect the air inlet and outlet tubing from the air pump.
Maintenance Reference Manual
January2023 00809-0200-3415
60 Emerson.com/Rosemount