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MODEL TCL SECTION 10
MAINTENANCE
FIGURE 10-4. Replacing Sample Tubing
To replace sample tubing:
1. Sample tubing is shown in Figure 10-4.
2. Turn off the sample and reagent pumps.
3. Luer fittings connect the sample tubing to the pump. Disconnect the tubing by turning the fitting in the
direction of the arrows shown in Figure 10-5.
4. Disconnect the other end of the sample pump suction tubing from the overflow sampler. Pull the reagent
injection tube off the reagent injection tee.
5. Disconnect the other end of the sample pump discharge tubing from the flow cell. Pull the air injection tube off
the air injection tee.
6. Disconnect the sample inlet and drain tubing.
7. Install the replacement sample pump suction and discharge tubing assemblies. The assemblies look similar.
To tell the difference, note the air injection tee in the discharge tubing assembly has a larger diameter barb
than the reagent injection tee in the suction tubing assembly.
8. Install replacement sample inlet and drain tubing. The sample inlet tubing is longer than the drain tubing.