CleaverBrooks CBEX Elite, Эксплуатация и обслуживание

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750-368
CBEX Elite 100-1200 HP 3-9
3.6 — Washing Out
11.
Remove handhole plates and wash the waterside surfaces thoroughly using a high pressure water stream.
12.
Inspect the surfaces. If they are not clean, repeat the boilout.
13.
After closing the handholes and reinstalling the safety or relief valves, fill the boiler and fire it until the water is
heated to at least 180º F to drive off any dissolved gases, which might otherwise corrode the metal.
The above procedure may be omitted in the case of a unit previously used or known to be internally clean. How-
ever, consideration must be given to the possibility of contaminating materials entering the boiler from the sys-
tem.
3.6 — Washing Out
3.6.1 — Hot Water Boiler
In theory, a hot water system and boiler that has been initially cleaned, filled with raw water (and water treated),
with no make-up water added, will require no further cleaning or treatment. However, since the system (new or
old) can allow entrance of air and unnoticed or undetected leakage of water, introductions of raw water make-up
or air may lead to pitting, corrosion and formation of sludge, sediment, scale, etc., on the pressure vessel.
If the operator is absolutely certain that the system is tight, then an annual waterside inspection may be suffi-
cient. However, if there is any doubt, the pressure vessel waterside should be inspected no later than three
months after initially placing the boiler into operation, and periodically thereafter as indicated by conditions
observed during inspections.
3.6.2 — Steam Boiler
No later than three months after initially placing the boiler into operation, and thereafter as conditions warrant,
the pressure vessel should be drained after being properly cooled to near ambient temperature. Handhole covers
should be removed and waterside surfaces should be inspected for corrosion, pitting, or formation of deposits.
Upon completion of the inspection, the pressure vessel interior should be flushed out, as required, with a high
pressure hose. If deposits are not fully removed by flushing, a consultation may be required with your local
Cleaver-Brooks authorized representative. In extreme cases, it may be necessary to resort to acid cleaning. Pro-
fessional advice is recommended if acid cleaning is required.
The inspections will indicate the effectiveness of the feedwater treatment. The effectiveness of treatment, the
water conditions, and the amount of fresh water make-up required are all factors to be considered in establishing
frequency of future pressure vessel washouts. Contact your local Cleaver-Brooks authorized representative for
more information.
Be sure to drain the hot water to a safe point of discharge to avoid scalding. Failure to follow these instructions could
result in serious injury or death.
NOTE: It is advised a water meter be installed in the piping to detect leakage in a “closed” system.
! Warning