TM 55-1925-284-14&P
0014 00
3. Remove the lockouts and tagouts (FM 55-502).
5. Ensure that the water level in the media tank (figure 7, item 6) is at the top of the airlift (figure 7, item 1)
approximately 3 inches (76 mm) above the media (figure 7, item 5).
6. OPEN valve MSD-6 BLOWER DISCH TO AIR SCOURING SOV (figure 4, item 7) and CLOSE valve MSD-5
BLOWER DISCHARGE SHUTOFF (figure 4, item 8).
7. Verify that air bubbles appear in the water within the tank indicating that the air scour (figure 7, item 7) is
operating properly. If air bubbles are not present in the water, perform the Disassembly, Cleaning and In-
spection portion of this procedure until the accumulated sludge over the air scour has been removed and air
bubbles are present in the water. Once it has been determined that the air scour is operating properly,
continue with the procedure.
8. CLOSE valve MSD-6 BLOWER DISCH TO AIR SCOURING SOV (figure 4, item 7) and OPEN valve MSD-5
BLOWER DISCHARGE SHUTOFF (figure 4, item 8).
9. Apply a continuous 1/4 inch (6 mm) bead of silicone compound (sealant) on the opening of the media
tank (figure 7, item 6). Circle each bolt hole in the media tank inspection cover (figure 5, item 4) with a
1/8 inch (3 mm) bead of silicone compound.
WARNING
Heavy loads can crush. Do not allow any body parts to come under the load or
between the load and a stationary object. Death or serious injury can result.
10. Install the media tank inspection cover (figure 5, item 4) on the media tank (figure 5, item 11) and secure it
with the 12 flat washers (figure 5, item 9) and 12 nuts (figure 5, item 8).
11. Connect the potable water fill piping (figure 5, item 2) to the media tank inspection cover (figure 5, item 4) and
tighten the potable water pipe coupling (figure 5, item 1).
CLEAN WET WELL INLET STRAINER
DISASSEMBLY
1. Set to OFF the HAND, PUMP OFF, AUTO switch (figure 3, item 4) on the MSD motor controller (figure 3, item 2).
Lock out and tag out (FM 55-502).
2. CLOSE, lock out and tag out (FM 55-502) valves MSD-8 MEDIA TANK PUMP-OUT DR (figure 4, item 3) and
MSD-10 WET WELL DISCHARGE (figure 4, item 11).
3. Loosen the yoke screw (figure 8, item 1) on the wet well inlet strainer (figure 8, item 2).
0014 00-10