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AERATION CHAMBER CLEANING
1.
Aeration.
The aeration system must be flushed every maintenance
visit. There are two flushing methods; (A) Air flushing
and (B) Water flushing. Air flushing must be done
every maintenance visit. Water flushing must be done if
there is a sign of clogging in the Aeration Chamber (e.g.
abnormal increase in recirculation flow).
(A) Air flushing procedure:
• Close gray recirculation valve (2) all the way. (0%)
• Rotate blue aeration valve (1) back and forth from
the 0% to the 100% position several times to flush.
• Set valves (1) and (2) back to the appropriate
positions. (See Recirculation Flow Adjustment, pg.
10)
(B) Water flushing procedure: (See Fig. 20)
• Make sure that the blower is off.
• Close valve (2) all the way.
• Connect a water line to the aeration line after
the switching valve, as shown in Fig. 20.
• Gradually open the water faucet and introduce water into
the system.
• Rotate valve (1) back and forth from the 0% to
the 100% position several times to flush.
• Turn off the water, remove the water line, and
reconnect the airline to the blower.
• Set valves (1) and (2) back to the
appropriate positions.
(See Recirculation Flow Adjustment, pg. 10)
(C) Cleaning the recirculation line:
• Open the gray recirculation valve (2) to 100%.
• Flush water through the recirculation line for several
seconds.
• Turn off the recirculation by rotating the gray valve (2) to
0%.
• Make sure that the blower is off. Allow the system to
relax for a few seconds.
• Repeat this cleaning method three times.
• A hose or brush can also be used to clean the
recirculation line. See Figure 21.
• Reset the gray valve (2) to its original position.
SYSTEM DIAGRAM
Figure 18
Figure 20
Figure 17
Refer to sections on the following pages for detailed maintenance item descriptions.
Figure 19
