04E3920 User Manual QuickTOC
®
purity
ATEX 2 141
8 Care and Maintenance
8.3 Care and Maintenance Tasks
LAR | PROCESS ANALYSERS AG
8.3.3 Clean Vessel for Calibration Fluid and Replace Calibration Standard
1. Renew the calibration standard weekly (with automatic calibration!) to prevent a change in the
standard.
2. Discard the remainders of the old standard and rinse the container of the calibration standard
carefully with deionised water. Establish the calibration standard according to the relevant
regulations. Always use the same glass vessel for your calibration standard.
8.3.4 Check Pump Hoses and Clean if Necessary
1. Open the tube cassettes of the sample pump and check the tubing for contamination.
2. Clean the tubing from the sample inlet to the sample vessel.
3. Rinse the tubing with a wash bottle of deionised water.
4. Close the tube cassettes.
8.3.5 Check the Inlet and Outlet of the Control Unit for Contamination
Check the inlets and outlets of the control unit for contamination (oil, dust) and for corrosion. Contact
LAR if you find contamination.
8.3.6 Check Ventilator for Contamination
1. Check the fan for contamination (oil, dust) and for corrosion. If contamination is found, cleaning
must be performed
2. Clean the fan and blades with a dry, scum-free cloth.
3. Check the fan for ease of movement. If the fan does not run smoothly, contact LAR for
replacement.
8.3.7 Check Reactor Foot and Clean if Necessary
1. Use heat-resistant gloves!
2. Disassemble the air vent on the bottom of the analyser by gently pulling the air vent forward with
your hands (Figure 112, page 175). Loosen the maintenance door screws on the bottom of the
analyser and remove the service door.
3. Undo the screws of the second bottom grid behind it and detach it. Now the reactor foot is visible.
4. Unscrew the four black spacer bolts (there are two for the high salt option).
5. Unscrew the three screws from the seating of the reactor foot.
6. Undo the screwed insert with teflon tube from the reactor foot seat.
7. Carefully pull the reactor foot from the reactor pipe end.
8. Use a 3.5 mm drill bit (1) to carefully drill into the reactor pipe (2) by hand [note: do not use a
cordless or power drill].
9. Then use if required a bigger drill bit of maximum size 5.5 mm.
10. Manually drill into the reactor pipe all the way by hand to remove the deposits.
11. A drill bit is not necessary when the high salt option is used. Remove the deposits using a large
Notice
First stop measuring mode with the "Offline" button before carrying out this monitoring
and maintenance activity.
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