TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
3-44. FILTER TANK MAINTENANCE - continued.
DISASSEMBLY
WARNING
Wear protective equipment while working with media.
NOTE
Cover a 6-foot (1.83m) square area of the floor in front of lower flange cover to
catch filtration material
a.
Remove eight screws (8), nuts (5) flange cover (7), and gasket (6) from top handhole (14). Discard gasket.
WARNING
Weight of media is over 1000 pounds (454 kg). Remove flange
cover carefully to avoid personal injury from flange cover
movement.
b.
Remove twelve screws (9), nuts (11), flange cover (10), and gasket (12) from bottom handhole (13). Discard
gasket.
c.
Remove fitting (2), elbow (3) and reducer (4) from multimedia filter (1).
REPAIR
Replace all damaged components.
CAUTION
Be careful while removing media not to damage laterals with tools.
a
Using a hand scoop, remove filtration material from multimedia filter (1) and discard.
b.
Turn multimedia filter (1) on side and use garden hose to flush out remaining media.
CLEANING
a
Using soap solution and stiff-bristled brush, clean flange covers (7 and 10).
b.
Clean flange ports (13 and 14), mounting screws, and nuts.
INSPECTION
a.
Inspect inside and outside of multimedia filter (1) for cracks, evidence of leaks, damage, or excessive
corrosion.
b.
Inspect flange covers (7 and 10) for excessive corrosion and wear.
c.
Inspect all inside parts for corrosion and wear. Ensure diffuser tube vent lines and screens are not clogged.
3-241
