Contech Jellyfish 소유자 매뉴얼 - 페이지 9

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Standing water outside the backwash pool is not

anticipated and may indicate a backwater condition

caused by high water elevation in the receiving

water body, or possibly a blockage in downstream

infrastructure.

Any appreciable sediment (≥1/16") accumulated on the

deck surface should be removed.

5.2 Wet weather inspections

Observe the rate and movement of water in the unit.

Note the depth of water above deck elevation within the

MAW or inlet bay.

Less than 6 inches, flow should be exiting the cartridge

lids of each of the draindown cartridges (i.e. cartridges

located outside the backwash pool).

Greater than 6 inches, flow should be exiting the

cartridge lids of each of the draindown cartridges and

each of the hi-flo cartridges (i.e. cartridges located

inside the backwash pool), and water should be

overflowing the backwash pool weir.

18 inches or greater and relatively little flow is exiting

the cartridge lids and outlet pipe, this condition

indicates that the filter cartridges need to be rinsed.

6.0 Maintenance Requirements

Required maintenance for the Jellyfish Filter is based upon results

of the most recent inspection, historical maintenance records, or

the site specific water quality management plan; whichever is more

frequent. In general, maintenance requires some combination of the

following:

Sediment removal for depths reaching 12 inches or greater, or

within 3 years of the most recent sediment cleaning, whichever

occurs sooner.

Floatable trash, debris, and oil removal.

Deck cleaned and free from sediment.

Filter cartridges rinsed and re-installed as required by the most

recent inspection results, or within 12 months of the most

recent filter rinsing, whichever occurs sooner.

Replace tentacles if rinsing does not restore adequate hydraulic

capacity, remove accumulated sediment, or if damaged or

missing. It is recommended that tentacles should remain in

service no longer than 5 years before replacement.

Damaged or missing cartridge deck components must be

repaired or replaced as indicated by results of the most recent

inspection.

The unit must be cleaned out and filter cartridges inspected

immediately after an upstream oil, fuel, or chemical spill.

Filter cartridge tentacles should be replaced if damaged or

compromised by the spill.

7.0 Maintenance Procedure

The following procedures are recommended when maintaining the

Jellyfish Filter:

Provide traffic control measures as necessary.

Open all covers and hatches. Use ventilation equipment as

required, according to confined space entry procedures.

Caution: Dropping objects onto the cartridge deck may

cause damage.

Perform Inspection Procedure prior to maintenance activity.

To access the cartridge deck for filter cartridge service, descend

into the structure and step directly onto the deck. Caution: Do

not step onto the maintenance access wall (MAW) or backwash

pool weir, as damage may result. Note that the cartridge deck

may be slippery.

Maximum weight of maintenance crew and equipment on the

cartridge deck not to exceed 450 lbs.

7.1 Filter Cartridge Removal

Remove a cartridge lid.

Remove cartridges from the deck using the lifting loops in the

cartridge head plate. Rope or a lifting device (available from

Contech) should be used. Caution: Should a snag occur, do

not force the cartridge upward as damage to the tentacles

may result. Wet cartridges typically weigh between 100 and

125 lbs.

Replace and secure the cartridge lid on the exposed empty

receptacle as a safety precaution. Contech does not recommend

exposing more than one empty cartridge receptacle at a time.

7.2 Filter Cartridge Rinsing

Remove all 11 tentacles from the cartridge head plate. Take

care not to lose or damage the O-ring seal as well as the plastic

threaded nut and connector.

Cartridge Removal & Lifting Device

Position tentacles in a container (or over the MAW), with the

threaded connector (open end) facing down, so rinse water is

flushed through the membrane and captured in the container.

Using the Jellyfish rinse tool (available from Contech) or a

low-pressure garden hose sprayer, direct water spray onto the

tentacle membrane, sweeping from top to bottom along the

length of the tentacle. Rinse until all sediment is removed from

the membrane. Caution: Do not use a high pressure sprayer

or focused stream of water on the membrane. Excessive

water pressure may damage the membrane.

Jellyfish

Filter Owner's Manual