MANHOLE ODOR CONTROL INSERT (non-locking)
Sweetfilter IVB 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 s
Gaskets shall be made of closed cell neoprene and have a pressure sensitive adhesive on one side .
2.4 Top screen diffuser
Top screen diffuser prevents mud and deris from entering media while preventing channeling of gas.
2.5Lift Straps
Upper body shall have 1 lift strap and lower removeable odor media container shall have 2 lift straps attached for removal of odor media without removing entire insert assembly. Straps shall be made of 1” width nylon . Lift straps shall be attached to insert body by means of sealed aluminum rivets.
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 Insert shall be fully seated around the manhole frame between the insert and the manhole frame rim.
4.0 FIELD TESTING AND TRAINING
4.1 No training is required.
