SPECIAL PRECAUTIONS
AGS1
The wet weight of the interceptor combined with
high temperature kitchen water creates the
potential for tank deformation when installed
above grade. In these situations Above Grade
Support Kit model AGS1 or AGS2 should be
installed to maintain structural integrity. AGS1 is
required for some GB-250 installations. AGS2 is
required for all GB-500 installations.
Above Grade Installation Support
(for Models GB-250 and GB-500 Only)
Install unit on solid, level surface in
contact with the entire footprint of unit
base; for suspended installations design
trapeze to support the wet weight of the
unit. Do not partially support unit or
suspend unit using metal U-channel to
create a trapeze.
Fully Support Base of Unit
For above grade installations ensure heavy
inlet and outlet piping (such as cast iron or
long runs) is properly supported or suspended
during the entire installation process to
prevent connection failure or damage to
bulkhead fittings.
Support Inlet and Outlet Piping
pipe supports
concrete floor
suspended installation
DO NOT
COMPACT
BACKFILL
For Schier Grease Interceptor Installations - Failure to follow this guidance voids your
warranty
Interceptors and risers are not designed
to withstand water table height in
excess of the top of the unit when
buried (see figure). If it is possible for
this to occur, install the interceptor and
risers in a water-tight concrete vault or
backfill with concrete or flowable fill
(wet concrete and flowable backfill
should be poured in stages to avoid
crushing the interceptor). At risk areas
include but are not limited to tidal surge
areas, floodplains and areas that
receive storm water. Great Basin™
models that are direct buried in high water table scenarios must be installed with an
anchor kit. Models GB-50, GB-75, and GB-250 use model AK1 anchor kit. Model
GB-500 uses model AK2 anchor kit for use with deadmen anchors. Models
GB-1000, GGI-750 and GGI-1500 use model AK3 anchor kit for use with deadmen
anchors.
max water table height for
direct burial
model AK1
anchor kit
High Water Table Installations
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SV10 Installation Guide page 3 of 10
