Filter
Top Products
65
MODEL TCL SECTION 12
MAINTENANCE
FIGURE 12-17.
FIGURE 12-18.
12.3.5 Replacing the air pump diaphragm
and check valves.
1. Disconnect power to the analyzer.
2. Refer to Figure 12-13. 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 fitting in the bottom of the
enclosure.
3. Remove the four screws (circled in Figure 12-14) 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 12-15.
5. Remove the five screws (surrounded by squares in Figure 12-14)
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 12-17.
8. Slide the pump assembly out of the air pump body. See Figure
12-18.
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.
12. Connect the air inlet and outlet tubing to the air pump. See
Figure 12-15. The conical end of the check valve points in the
direction of the air flow.
13. Replace the air pump access panel.
14. Connect the sample pump tubing to the pump. Connect the
reagent and air injection tubing. Connect the air inlet tubing to
the barbed fitting at the bottom of the enclosure.
HAZARDOUS
VOLTAGE
CAN CAUSE
SEVERE INJURY
OR DEATH.
DISCONNECT
POWER BEFORE
SERVICING.
WARNING
9241136/B