TM 5-4610-218-12
Troubleshooting-Continued
Table 3-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Increase the agitator mixing speed and tighten the suc-
tion hose connections. No air bubbles should appear in
the raw water sight glass.
Step 8.
Slurry pool remains too high, due to excessive input flow.
Adjust the input flow valve CV-9 to 25 gpm.
Step 9.
No rotation in the slurry pool at maximum agitator speed.
Increase the input flow to at least 25 gpm.
2.
SLUDGE CONCENTRATOR TANK FAILS TO CONTROL SLURRY BLANKET.
Slurry blanket rising too rapidly.
Step 1.
Reduce agitator speed.
Slurry blanket rising above circular baffle.
Step 2.
Adjust valve DV-21.
Step 3.
Valves not correctly positioned.
Reposition valves CV-16, CV-17 and DV-21.
WET WELL FAILS TO DELIVER ENOUGH CLEAR WATER.
3.
Step 1.
Valves not positioned correctly.
Reposition valves CV-17 and DV-25.
RAW WATER SIGHT GLASS FAILS TO SHOW WATER.
4.
I n l e t port restricted.
Step 1.
Remove sight glass and clean the port.
Sight glass air locked.
Step 2.
Loosen the sight glass while unit is operating.
3-36
