Sediment And Flotables Extraction; Filter Cartridge Reinstallatino And Replacement; Chemical Spills; Material Disposal - Contech Jellyfish Owner's Manual

4. Collected rinse water is typically removed by vacuum hose.
5. Reassemble cartridges as detailed later in this document. Reuse
O-rings and nuts, ensuring proper placement on each tentacle.

7.3 Sediment and Flotables Extraction

1. Perform vacuum cleaning of the Jellyfish Filter only after
filter cartridges have been removed from the system. Access
the lower chamber for vacuum cleaning only through the
maintenance access wall (MAW) opening. Be careful not to
damage the flexible plastic separator skirt that is attached to
the underside of the deck on manhole systems. Do not lower
the vacuum wand through a cartridge receptacle, as damage to
the receptacle will result.
2. Vacuum floatable trash, debris, and oil, from the MAW
opening or inlet bay. Alternatively, floatable solids may be
removed by a net or skimmer.
Rinsing Cartridge with Contech Rinse Tool
3. Pressure wash cartridge deck and receptacles to remove all
sediment and debris. Sediment should be rinsed into the sump
area. Take care not to flush rinse water into the outlet pipe.
4. Remove water from the sump area. Vacuum or pump
equipment should only be introduced through the MAW or
inlet bay.
5. Remove the sediment from the bottom of the unit through the
MAW or inlet bay opening.
Vacuuming Sump Through MAW
6. For larger diameter Jellyfish Filter manholes (≥8-ft) and some
vaults complete sediment removal may be facilitated by
removing a cartridge lid from an empty receptacle and inserting
a jetting wand (not a vacuum wand) through the receptacle.
Use the sprayer to rinse loosened sediment toward the vacuum
hose in the MAW opening, being careful not to damage the
receptacle.
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7.4 Filter Cartridge Reinstallation and Replacement
1. Cartridges should be installed after the deck has been cleaned.
It is important that the receptacle surfaces be free from grit and
debris.
2. Remove cartridge lid from deck and carefully lower the filter
cartridge into the receptacle until head plate gasket is seated
squarely in receptacle. Caution: Do not force the cartridge
downward; damage may occur.
3. Replace the cartridge lid and check to see that both male
threads are properly seated before rotating approximately 1/3
of a full rotation until firmly seated. Use of an approved rim
gasket lubricant may facilitate installation. See next page for
additional details.
4. If rinsing is ineffective in removing sediment from the tentacles,
or if tentacles are damaged, provisions must be made to
replace the spent or damaged tentacles with new tentacles.
Contact Contech to order replacement tentacles.

7.5 Chemical Spills

Caution: If a chemical spill has been captured, do not attempt
maintenance. Immediately contact the local hazard response
agency and contact Contech.

7.6 Material Disposal

The accumulated sediment found in stormwater treatment and
conveyance systems must be handled and disposed of in accordance
with regulatory protocols. It is possible for sediments to contain
measurable concentrations of heavy metals and organic chemicals
(such as pesticides and petroleum products). Areas with the greatest
potential for high pollutant loading include industrial areas and
heavily traveled roads. Sediments and water must be disposed
of in accordance with all applicable waste disposal regulations.
When scheduling maintenance, consideration must be made
for the disposal of solid and liquid wastes. This typically requires
coordination with a local landfill for solid waste disposal. For
liquid waste disposal a number of options are available including a
municipal vacuum truck decant facility, local waste water treatment
plant or on-site treatment and discharge.