750-368
CBEX Elite 100-1200 HP
8-3
8.2 — Fireside Cleaning
8.2 — Fireside Cleaning
Soot and non-combustibles are effective insulators, and, if allowed to accumulate,
will reduce heat transfer to the water and increase fuel consumption. Soot and
other deposits can be very moisture-absorbent, and may attract moisture to form
corrosive acids that will deteriorate fireside metal.
Clean-out should be performed at regular and frequent intervals, depending
upon load, type, and quality of fuel, internal boiler temperature, and combus-
tion efficiency. A stack temperature thermometer can be used as a guide to
clean-out intervals since an accumulation of soot deposits will raise the flue gas
temperature.
FIGURE 8-1. Stack Thermometer
Tube cleaning is accomplished by opening the front head. All loose soot and accumulations should be removed.
Any soot, or other deposits, should be removed from the furnace and tube sheets.
The flue gas outlet and stack should be inspected annually and cleaned as necessary. Commercial firms are
available to perform the work. The stack should be inspected for damage and repaired as required.
The fireside should be thoroughly cleaned prior to any extended lay-up of the boiler. Depending upon circum-
stances, a protective coating may be required. See Chapter 3.
8.3 — Water Level Controls
The need to periodically check water level controls and the waterside of the pressure vessel cannot be overem-
phasized. Most instances of major boiler damage are the result of operating with low water, or the use of
untreated or incorrectly treated water.
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