C-1
Appendix C. EC155 Sample Cell and
Intake Maintenance
The following steps can be undertaken when the sample cell and intake tube
becomes dirty, or as part of routine maintenance of the EC155. Refer to
(p. 40)
, for figures and instructions for
accessing and removing the analyzer from the sample cell.
C.1 Cleaning Sample Cell
1.
Turn off the pump.
2.
Power down the analyzer.
3.
Remove the analyzer from the sample cell.
4.
Use water or alcohol on a soft cotton swab to clean the inside of the
sample cell.
Take care not to let the water or alcohol drip down into the
holes at ends of the sample cell. Each end has a small passage
that connects to the pressure sensor. These passages can
become plugged by residue carried by the water or alcohol.
This problem can be avoided by using cotton swabs that are
slightly moist, not saturated. However, if more aggressive
cleaning is needed, invert the sample-cell assembly during
cleaning so any liquid drains away from these passages.
C.2 Cleaning Intake Tube
The newer design of the EC155 sample cell (sample cell serial numbers 2000
and greater) allows the intake to be removed by the user. Once removed, the
inner stainless steel tubing that carries the clean sample air from the vortex
may be cleaned. The appropriate cleaning procedure depends on whether the
contamination is particulate matter that has collected during dry, dusty
conditions, or if it is an accumulation of soluble material such as salt deposits.
Instructions on detaching the vortex intake are found in section C.2.1 below,
and guidance for cleaning either type of contamination is found in sections
C.2.2 and C.2.3, respectively.
The older design of the EC155 intake tube is not designed to be removed by
the user. If it becomes dirty, it may be cleaned while attached to the sample cell
assembly following the guidelines in sections C.2.2 and C.2.3 below.
C.2.1 Detaching the Vortex Intake
1.
Turn off the pump.
2.
Power down the analyzer.
3.
Remove analyzer from the sample cell.
NOTE
Summary of Contents for EC155
Page 78: ...E 1 Appendix E Safety Data Sheets SDS E 1 Molecular Sieve Type 13X ...
Page 79: ...Appendix E Safety Data Sheets SDS E 2 ...
Page 80: ...Appendix E Safety Data Sheets SDS E 3 ...
Page 81: ...Appendix E Safety Data Sheets SDS E 4 ...
Page 82: ...Appendix E Safety Data Sheets SDS E 5 E 2 Magnesium Perchlorate ...
Page 83: ...Appendix E Safety Data Sheets SDS E 6 ...
Page 84: ...Appendix E Safety Data Sheets SDS E 7 ...
Page 85: ...Appendix E Safety Data Sheets SDS E 8 ...
Page 86: ...Appendix E Safety Data Sheets SDS E 9 ...
Page 87: ...Appendix E Safety Data Sheets SDS E 10 ...
Page 88: ...Appendix E Safety Data Sheets SDS E 11 ...
Page 89: ...Appendix E Safety Data Sheets SDS E 12 E 3 Decarbite ...
Page 90: ...Appendix E Safety Data Sheets SDS E 13 ...
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Page 92: ...Appendix E Safety Data Sheets SDS E 15 ...
