Emerson Rosemount TCL - Page 57

12.3.4 Replacing sample tubing
Depending on the TCL configuration and manufacturing date, the sample pump may have
either clockwise or counter-clockwise flow direction. The same sample tubing kit can be
used for either sample pump flow direction. Refer to the product datasheet for sample
tubing kit ordering information.
Procedure
1. Turn off the sample and reagent pumps.
2. 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 12-4.
3. Disconnect the other end of the sample pump suction tubing from the overflow
sampler. Pull the reagent injection tubing off the reagent injection tee.
4. Disconnect the other end of the sample pump discharge tubing from the flow cell.
Pull the air injection tubing off the air injection tee.
5. Disconnect the sample inlet and drain tubing.
6. 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.
7. Install replacement sample inlet and drain tubing.
The sample inlet tubing is longer than the drain tubing.
12.3.5 Replacing peristaltic pump tubing
The expected life of the peristaltic pump tubing is one year.
To replace pump tubing:
Procedure
1. Turn off the sample and reagent pumps.
2. The reagent and sample tubing is connected to the pump tubing with luer fittings.
Disconnect the fittings from the pump by turning the fitting in the direction of the
arrow.
See Figure 12-4.
Figure 12-4: Luer Fittings
A. Luer fittings
3. Using your thumb and forefinger, gently pinch the sides of the pump cover. Slide
the cover upwards to remove it.
Reference Manual Maintenance
00809-0200-3415 January2023
Rosemount TCL 56 57