Replacing the Probe and Tubing and Probe Housing
CAUTION: Take care when handling the measurement block tube as the
residue from some protective gloves can adhere to the tube and
therefore affect the fluid detector (FD2).
20. Fit the new measurement block tube and reconnect the sample
pump tubing.
21. Replace the reference sensor, Page 3-21 step 7.
22. Lower the front cover and restart the 248.
23. To promote good flushing characteristics:
a. Raise the probe lever to the first position.
b. Immerse the tip of the probe in a small beaker of strong soap
solution for 10 to 15 seconds.
c. Lower the probe lever and Prime the 248, Page 3-9.
Replacing the Probe Protector
BIOHAZARD: See Appendix A, Protecting Yourself from Biohazards.
Equipment: Probe protector, supplied in Spares box, Probe and tubing
kit, Probe and housing kit, and as Cat. 673373.
1. Remove the probe housing and probe, Page 3-24 steps 1 to 6. Do not
discard the probe or housing.
2. Remove the probe protector from the probe housing.
Figure 3-38. Removing the Probe Protector
3. Fit a new probe protector.
4. Re-assemble the probe and housing, Page 3-26, steps 12 to 16.
5. Lower the front cover and restart the 248.
Page 3-28 248 Operator’s Manual
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