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6
V
2.3 Separator positioning
The purpose of a separator is to collect
light oils for proper disposal. Timely
emptying and maintenance is critical for
effective operation. Alarm systems can help
ensure light oils and sludge are removed
in a timely fashion and can alert potential
maintenance issues.
Alarm failure (or failure to action alarm
alerts) and back flow from sewer are
potential causes of operation error and
pollution.
These can be overcome in certain
applications by adjusting height of separator
relative to collection vessel/drain.
Super elevated positioning is where the
cover of the separator is higher by a
minimum height (V) than the collection
fixture.
V - Super elevated positioning
Cover
only
Cover &
Shaft
Cover &
Shaft
Size
Pedestrian
in (mm)
Heavy duty
in (mm)
NS3/450
1.78 (45) 2.75 (70) 5.90 (150)
NS3/670
1.78 (45) 2.75 (70) 5.90 (150)
N 3/950
1.78 (45) 2.75 (70) 5.90 (150)
NS6/660
1.57 (40) 2.56 (65) 5.71 (145)
NS6/1210
1.57 (40) 2.56 (65) 5.71 (145)
NS10/1080
1.97 (50)
2.95 (75)
6.10 (155)
Installation situation
Super elevated
positioning
No
No
Yes
Yes
Alarm system
No
Yes
No
Yes
Operating situation
s
Ready for
use
Normal operation
Normal operation
Normal operation
Normal operation
Max. oil =
float closure
= blockage
Oil will leak from cover
Alarm will alert and
oil will leak from cover
Oil will stay in separator,
wastewater will flood from
collection fixture
Alarm will alert and oil will stay
in separator, wastewater will
flood from collection fixture
Backflow
from sewer
Oil will leak from cover -
unless a backflow prevention
pump is used downstream
from separator
A
larm will alert and oil will
leak from cover - unless a
backflow prevention pump
is used downstream from
separator
Oil will stay in separator,
wastewater will flood from
collection fixture
Alarm will alert and oil will stay
in separator, wastewater will
flood from collection fixture