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Important: If vault entry is required, OSHA rules for confined space Method 2:
<br /> entry must be followed. A. Enter the vault using appropriate confined space protocols.
<br /> Filter cartridge replacement should occur during dry weather. It may
<br /> be necessary to plug the filter inlet pipe if base flow is occurring. B Unscrew the cartridge cap.
<br /> Replacement cartridges can be delivered to the site or customers C. Remove the cartridge hood screws(3) hood and float.
<br /> facility.Contact CONTECH for more information. D. At location under structure access,tip the cartridge on its
<br /> Warning: In the case of a spill,the worker should abort side.
<br /> maintenance activities until the proper guidance is obtained. Notify
<br /> the local hazard control agency and CONTECH immediately. Important: Note that cartridges containing media other than
<br /> the leaf media require unscrewing from their threaded
<br /> To conduct cartridge replacement and sediment removal: connectors.Take care not to damage the manifold
<br /> 1. If applicable, set up safety equipment to protect workers and connectors.This connector should remain installed in the
<br /> pedestrians from site hazards, manifold and capped if necessary.
<br /> 2.Visually inspect the external condition of the unit and take notes E. Empty the cartridge onto the vault floor. Reassemble the
<br /> concerning defects/problems. empty cartridge.
<br /> 3.Open the doors(access portals)to the vault and allow the system
<br /> to vent. F Set the empty, used cartridge aside or load onto the hauling
<br /> truck.
<br /> 4.Without entering the vault,give the inside of the unit, including
<br /> components,a general condition inspection. G. Continue steps a through E until all cartridges have been
<br /> 5. Make notes about the external and internal condition of removed.
<br /> the vault.Give particular attention to recording the level of 8. Remove accumulated sediment from the floor of the vault and
<br /> sediment build-up on the floor of the vault, in the forebay, and from the forebay. Use vacuum truck for highest effectiveness.
<br /> on top of the internal components.
<br /> 9. Once the sediments are removed, assess the condition of the
<br /> 6. Using appropriate equipment offload the replacement cartridges vault and the connectors.The connectors are short sections
<br /> (up to 150 lbs.each)and set aside. of 2-inch schedule 40 PVC,or threaded schedule 80 PVC that
<br /> 7. Remove used cartridges from the vault using one of the should protrude about 1"above the floor of the vault. Lightly
<br /> following methods: wash down the vault interior.
<br /> Method 1: a. Replace any damaged connectors.
<br /> A. This activity will require that workers enter the vault to
<br /> remove the cartridges from the under drain manifold and 10. Using the vacuum truck boom,crane,or tripod, lower and
<br /> place them under the vault opening for lifting(removal). install the new cartridges.Take care not to damage connections.
<br /> Unscrew(counterclockwise rotations)each filter cartridge 11. Close and fasten the door.
<br /> from the underdrain connector. Roll the loose cartridge,on 12. Remove safety equipment.
<br /> edge,to a convenient spot beneath the vault access. 13. Finally,dispose of the accumulated materials in accordance with
<br /> Using appropriate hoisting equipment,attach a cable from applicable regulations. Make arrangements to return the used
<br /> the boom,crane, or tripod to the loose cartridge. Contact empty cartridges to CONTECH.
<br /> CONTECH for suggested attachment devices. Material Disposal
<br /> Important: Cartridges containing leaf media (CSF)do not The accumulated sediment must be handled and disposed of in
<br /> require unscrewing from their connectors. Do not accordance with regulatory protocols. It is possible for sediments
<br /> damage the manifold connectors.They should remain to contain measurable concentrations of heavy metals and organic
<br /> installed in the manifold and can be capped during the chemicals.Areas with the greatest potential for high pollutant
<br /> maintenance activity to prevent sediments from entering loading include industrial areas and heavily traveled roads.
<br /> the under drain manifold. Sediments and water must be disposed of in accordance with
<br /> B. Remove the used cartridges(up to 250 lbs.)from the vault. applicable waste disposal regulations. Coordinate disposal of solids
<br /> and liquids as part of your maintenance procedure. Contact the
<br /> Important:Avoid damaging the cartridges during removal and local public works department to inquire how they disposes of their
<br /> installation. street waste residuals.
<br /> C. Set the used cartridge aside or load onto the hauling truck.
<br /> D. Continue steps A through C until all cartridges have been
<br /> removed.
<br /> ©2007 CONTECH Stormwater Solutions 800.338.1122
<br /> www.contech-cpi.com
<br /> Nothing in this catalog should be construed as an expressed warranty or an implied warranty of merchantability or fitness for any particular purpose.
<br /> See the CONTECH standard quotation or acknowledgement for applicable warranties and other terms and conditions of sale.
<br /> The product(s)described may be protected by one or more of the following US patents: 5,322,629;5,624,576;5,707,527;5,759,415;5,788,848;5,985,157;
<br /> 6,027,639;6,350,374;6,406,218;6,641,720;6,511,595;6,649,048;6,991,114;6,998,038;7,186,058;related foreign patents or other patents pending.
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