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Please note installation of any Alltrap Engineering products must be done by a qualified plumber failure to do so will deem the product warranty null and void.
Please insure that this document is up to date and presented to manufacturer when making any warranty claims failure to do so will deem the product warranty null and void.
1. A +/- 150mm layer of pea / fine gravel (or approved equivalent backfill compacted) must be installed, leveled, and compacted at the bottom of the excavation to the proper elevation for the installation of the separator base.
2. Install and level the tank.
IMPORTANT: Equipment to lift the units must be of adequate size to lift and lower the tanks without dragging and dropping to ensure no damage. Make use of adequate lifting straps.
IMPORTANT: Any material left behind from installation (e.g. mortar, soil,...) must be removed prior to filling the tanks with fresh water. Fill the separator via the Grit Tank until the OilSep unit is full, and water leaves the separator through the outlet structure. Make sure that the spill control valve is secured in an open position
Compacted Pea Gravel (or an approved equivalent backfill compacted to 98% of Standard Proctor Density in each layer) must be placed in uniform layers of 150mm (6") to not more than 200 mm (8") in depth up to the bedding for the inlet and outlet pipes.
Note: Backfill is not to contain topsoil
Install standard pipe bedding for the inlet and outlet pipes per the sewer design. Attach inlet and outlet pipes to the OilSep and GritTank unit
Place the frame above the opening to match the top of grade elevation. Make sure the frame is not in direct contact with the top of the OilSep or Grit Tank. A gap of 1” to 2” is required to prevent the vertical load transfer from the frame to the tank. Pour concrete around the frame to secure it in place, size to be determined by Engineer or local code based on site use.