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OLEOP
AT
OR P OPERA
TION MANU
AL
9
2.4 INSTALLATION
Light Duty Installations
1.
Excavate area 60" (1524 mm) wider
and 12" (305 mm) deeper than the
separator; this allows for a 12" (305
mm) aggregate base compacted to
Proctor density 97%.
2.
Check level of unit and inverts of
inlet/outlet pipes.
3.
Backfill in 12" (305 mm) layers around
unit to the level of inlet/outlet pipes
(backfill should be 2-16 mm sand/
gravel) and compact to Proctor
density 97%; take care to not damage
separator when compacting fill.
4. Connect inlet/outlet pipes - pipes
should be resistant to hydrocarbons.
Flexible couplings will be required
as inlet/outlet pipes are metric
dimensions.
5. Inlet pipes should be installed with
as few bends and slopes as possible
to prevent blockages and reduce
turbulence of incoming wastewater.
6.
Install extension shaft (if used) - cut to
required height, place provided seal
in lowest notch of remaining section.
Grease seal and tank collar with acid-
free grease to ensure watertight seal.
7.
Install wiring conduit for alarm system
(if used).
8.
Recheck levels.
9.
Continue to backfill and compact.
10. Place cover with 4" (102 mm) deep
concrete collar onto shaft/tank
assembly.
11.
Install alarm sensors (if used).
Heavy Duty Installations
1.
Excavate area 60" (1524 mm) wider
and 12" (305 mm) deeper than the
separator; this allows for a 12" (305
mm) aggregate base compacted to
Proctor density 97%.
2.
Check level of unit and inverts of
inlet/outlet pipes.
3.
Backfill in 12" (305 mm) layers around
unit to the level of inlet/outlet pipes
(backfill should be 2-16 mm sand/
gravel) and compact to Proctor
density 97%; take care to not damage
separator when compacting fill.
4. Connect inlet/outlet pipes - pipes
should be resistant to hydrocarbons.
Flexible couplings will be required
as inlet/outlet pipes are metric
dimensions.
5. Inlet pipes should be installed with
as few bends and slopes as possible
to prevent blockages and reduce
turbulence of incoming wastewater.
6.
Install extension shaft - cut to
required height, place provided seal
in lowest notch of remaining section.
Grease seal and tank collar with acid-
free grease to ensure watertight seal.
7.
Install wiring conduit for alarm system
(if used).
8.
Continue backfilling up to 8" (203
mm) below top of access shaft.
9.
Install reinforcement, form and pour
concrete load distribution plate
8" (203 mm) thick and extending
13.75" (350 mm) around shaft in all
directions (see next page for details).
10. Install cover, frame and concrete
adaptor plate to ensure it is held
securely in place.
11.
Install alarm sensors (if used).