Emerson Rosemount TCL, Manual

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2. Refer to Figure 10-12 . Disconnect the reagent and air injection tubes. Disconnect the
suction and discharge fitting by turning the Luer fitting in the direction shown in the
figure. Disconnect the air pump inlet tubing from the barbed fitting at the bottom of
the enclosure.
3. Remove the four screws (circled in Figure 10-13 ) holding the air pump access panel.
Pull out the pump and panel.
4. Disconnect the air inlet and outlet tubing from the air pump.
See Figure 10-14 .
5. Remove the five screws (surrounded by squares in Figure 10-13 ) holding the air
pump to the access panel.
6. Pull the rubber base off the pump.
7. Using needle nose pliers, remove the air inlet fitting from the side of the air pump.
See Figure 10-16 .
Inlet Fitting Figure 10-16:
8. Slide the pump assembly out of the air pump body.
See Figure 10-17 .
Pump Assembly Figure 10-17:
9. Following instructions on the package (PN 9160518), replace the diaphragm and
check valves.
10. Slide the pump assembly back into the pump body and replace the barbed inlet
fitting.
11. Replace the rubber base and screw the pump access panel back onto the air pump.
Maintenance
Instruction Manual 83