MANHOLE ODOR CONTROL INSERT (NON-LOCKING)
Sweetfilter III Manhole Insert
1.0 Scope
1.1 Under this item, the contractor shall supply to manufacturer's recommendations an insert as shown .
2.0 MATERIALS AND DESIGN
2.1 General
The insert and components shall be manufactured from corrosion-proof material suitable for atmospheres containing H2S and dilute H2SO2 gases associated with wastewater collection systems.
2.2 The Body
The insert body shall be made from Acrylonitrile Butadiene Styrene plastic that meets Federal Standards of LP 1183 and can pass ASTM test requirements: D 256, D 638, D 790, D 792, D 785, D 648.
The thickness shall not be less than 3/32". The insert body shall be manufactured to the dimensions as shown on the contract drawings to allow easy installation in the manhole frame. The insert body shall not have an overall depth exceeding 26 1/2".
2.3 Gasket
Gaskets shalls be made of closed cell neoprene and have a pressure sensitive adhesive on one side .
2.4 Removeable odor media insert
The removeable odor media insert shall be designed for insert removal or to allow water drainage should inspection be required immediately after or during rain storm.
2.5Lift Strap
Insert shall have a 1 lift straps attached to the body. Straps shall be made of 1 inch width nylon . Lift strap shall be attached to insert body by means of a sealed aluminum rivet.
2.6 Sizing
Insert shall be manufactured to fit the manhole frame rim from which it hangs. Specific field measurements are required .
3.0 INSTALLATION
3.1 Manhole frame rim shall be cleaned of all dirt or debris before
placing the insert.
3.2 Upper insert shall be fully seated around the manhole frame
between the insert and the manhole frame rim.
3.3 Install duckbill drain valve by pressing into drain hole.
3.4. Place lower insert inside unit, remove cap and seat screen flat.
3.5. Fill insert completely with odor control media.
3.6. Replace fill cap around periphery of lower insert and secure.
3.7 Replace insert in body and insure insert is fully seated around
the lower neoprene gasket.
3.8 Secure manhole cover.
4.0 FIELD TESTING AND TRAINING
4.1 No training is required.
