Kold-Draft GB-250 Installation Manual

GREAT BASIN GREASE INTERCEPTORS

(Models GB-15, GB-20, GB-25, GB-35, GB-50, GB-75 and GB-250)

GB-15

15 gpm, 16 gallons

Sheet Descriptions

Sheet #1 - Series overview and Warranty information
Sheet #2 - General installation guidelines and Operation/Maintenance guidelines
Sheet #3 - Below Grade installation guidelines (GB-35, GB-50, GB-75, GB-250)
Sheet #4 - Below and Above Grade installation guidelines (GB-15, GB-20, GB-25)
Sheet #5 - Multiple unit engineered grease interceptor installation guidelines
Sheet #6 - TeleGlide Riser installation guidelines (GB-35, GB-50, GB-75, GB-250)
Sheet #7 - TeleGlide Riser installation guidelines (GB-15, GB-20, GB-25)

Leak/Seal Testing
DO NOT AIR TEST UNIT OR TELEGLIDE RISER SYSTEM! Doing so may result in property damage, personal injury or death.

Base Unit: To perform a leak/seal test on the base unit, cap/plug all plumbing connections, remove the cover, and fill the unit with water just above the
highest connection. Inspect unit and connections for leaks. Check water level at specific time intervals per local code.

TeleGlide Riser System: If required by local code, the riser system may be leak/seal tested similar to the base unit. CAUTION: the riser(s) must be supported
before filling with water to keep from tipping over. Once riser system is in place and properly supported, cap/plug all plumbing connections on the main unit,
remove the cover from the top of the riser assembly and fill the unit and riser system with water to finished grade level. Carefully, as the riser(s) will be very
heavy from the weight of the water, inspect all gasket(s) and clamps (if applicable) for any leaks. Check water level at specific time intervals per local code.

Lifetime Warranty

Effective June 1, 2007 Schier Products Company (“Schier”) represents and warrants that HDPE and PP products (“Products”) will be free from any
and all defects in material and workmanship, including corrosion, during the lifetime of the plumbing system in which the Products were originally
installed and will, at its option, agree to repair, replace, or supply credit to the original purchaser.

74 lbs. grease capacity

GB-20

20 gpm, 22 gallons

109 lbs. grease capacity

GB-50

50 gpm, 52 gallons

249 lbs. grease capacity

GB-25

25 gpm, 22 gallons

75 lbs. grease capacity

75 gpm, 125 gallons

616 lbs. grease capacity

GB-35

35 gpm, 35 gallons

142 lbs. grease capacity

GB-75

This warranty does not cover damage caused by the Products’ normal usage, or wear and tear, nor does it cover damage from naturally occurring
phenomenon, including, but not limited to UV, freeze-related damage, or natural disasters. This warranty does not cover the purchaser’s cost of routine
maintenance including replacement of parts required in routine maintenance.

This warranty does not cover fabricated steel products, or any monitoring equipment. This warranty shall be effective if, and only if, the Products:
* Were installed in accordance with Schier’s notes, specifications and instructions, for installation, operation, and maintenance;
* Were installed in conformance with all applicable building and plumbing codes, and passed all applicable testing methods immediately following installation;
* Have not been subjected to misuse or abuse, whether negligent or intentional;
* Were never modified, repaired, or altered by any individual(s) not authorized by Schier.

This warranty is the purchaser’s sole and exclusive remedy, and acceptance of this exclusive remedy is a condition of the contract for thepurchase of these
Products. In no event shall Schier be liable for any incidental, special, consequential or punitive damages, or for any costs, attorney fees, expenses, losses or
delays claimed to be as a consequence of any damage to, failure of, or defect in any products including, but not limited to, any claims for loss of profi ts,
transportation, removal and installation charges. This warranty is exclusive and in lieu of all other warranties or conditions, written or oral, expressed or implied.

Certified Performance

Great Basin hydro mechanical grease interceptors are 3rd party performance-tested and listed by IAPMO to ASME #A112.14.3 grease
interceptor standard and CSA B481.1 greatly exceeding requirements for grease separation and storage. They are compliant to
the Uniform Plumbing Code and International Plumbing Code.

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

DESCRIPTION:

GREAT BASIN INSTALLATION,
OPERATION AND MAINTENANCE GUIDE

SHEET NUMBER:
DWG BY:

N.EBERT

1 of 7

GB-250

100 gpm, 275 gallons

1,076 lbs. grease capacity

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

MATL:

03/25/2014DATE:

REV:

PE

4

www.schierproducts.com

Made in the U.S.A

GENERAL INTERCEPTOR INSTALLATION INSTRUCTIONS

(GB-250 SHOWN)

OPERATION

Schier Products offers a complete line of grease interceptor tanks to separate fats, oils, and grease waste
from the waste stream and stops it entering the public sewer system.
Influent passes through the built-in calbrated flow control, where it is diffused into the main chamber. Lighter
grease is forced upward, heavier solids are forced downward. Effluent flows through the outlet, free of
grease and food waste.

FLOW

Isometric View

Set unit on level solid surface as close as
possible to fixtures being served. If unit is
to be installed below grade refer to below
grade installation instructions. (sheet #3)

FLOW

A

C

Top View

(Inside Unit)

Connect outlet diffuser to the desired
outlet (A,B,C). Unit is shipped with outlet
diffuser in location B and sealing caps on
locations A and C.

Flow Plate

B

Top View

Connect inlet and outlet drainage lines to
unit. Mechanically couple pipes to
unit. Do not solvent weld. If connecting
multiple units for an engineered grease
interceptor system refer to multiple unit
installation sheet. (sheet #5)

Remove cover(s).1.
Remove all contents of the grease interceptor including grease, sediment and wastewater. For most 2.

thorough cleaning contact a professional pumper contractor.
To access the inlet and outlet lines for cleaning as needed:3.

a.) 4" connections: Remove the inlet and outlet diffusers (inside unit(s)) by hand loosening
green locking collars.
b.) 6" connections: Remove threaded clean-out plug from the back of the inlet and outlet diffusers.

Clean the drain lines, diffusers and air relief thoroughly of all debris before replacing diffusers to 4.
original positions or reinstalling threaded clean-out plug.

Run sinks to fill unit(s) with water.

5.
Inspect gasket for wear and tear. Replace cover(s).

6.

7.

Dispose of grease per local code.

PUMPING FREQUENCY:

MAINTENANCE

Frequency depends on the capacity of the interceptor and the amount of grease and sediment in the
wastewater.

Monitor each pumping to establish an adequate maintenance schedule based off actual kitchen variances.
Levels can be tested with core sampler. Schier Products recommends pumping frequency to exceed no more
than 90 days.

TROUBLESHOOTING TIPS:

Flow Plate

In the case of a clog, inlet and outlet diffusers may be removed for line cleaning. Slower than usual sink
drainage may indicate the need to pump/clean grease interceptor.

To maintain proper flow rate, when
interceptor is installed in a high flow or
increased head pressure application
keep calibrated flow plate installed.
Flow plate orifice calibrated to rated
flow (GPM) at 13 foot water column.

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

To maintain proper flow rate, when
interceptor is installed in a low flow or
reduced head pressure application
remove and discard calibrated flow
plate. Flow plate orifice calibrated to
rated flow (GPM) at 13 foot water
column.

DESCRIPTION:

SHEET NUMBER:

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

DWG BY:

Always take proper care to ensure a safe and healthy environment while cleaning interceptor. For best
cleaning and maintenance service, call your local sewer and drain contractor.

Locking collar

Flow

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

N.EBERT

2 of 7

03/25/2014DATE:

MATL:
REV:

PE

4

Optional outlet

Cover

Inlet diffuser

GB-250 Shown

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

Made in the U.S.A

Adapter

Air relief
Locking collar

Flow

Outlet diffuser

Concrete Pad

must extend

18" outside

the unit footprint

2 1/2" Min.

8"

30"

45.00°

4"

Concrete Pad must extend

18" outside the unit footprint

Top View

4"

Rebar

60"

Finished Grade

INTERIOR OR EXTERIOR BELOW GRADE INSTALLATION INSTRUCTIONS

(GB-35 (INTERIOR ONLY), GB-50, GB-75, GB-250)

BELOW GRADE INSTALLATION INSTRUCTIONS

EXCAVATION

Install unit(s) as close as possible to fixtures being serviced.1.
Width and length of excavation shall be minimum 12" greater 2.
than the tank on all sides.
Depth of excavation shall be 6" deeper than tank bottom.3.
Set the tank in well-packed crushed aggregate material 4.

Rebar

GB-250
Shown

approximately 3/4" size rock, or sand, with no fines. When setting GB-75 (2),
GB-250 (2), GB-250 (3)and GB-250 (4) all units must be level.
Anchor kit is recommended for installations in high water table conditions to

5.
prevent float out. To be determined by specifying engineer. If necessary,
order optional "Anchor Kit" (see detail right).

BACKFILLING & FINISHED CONCRETE SLAB

Preparation of sub grade per geotech recommendations.1.
Stabilize and compact sub grade to 95% proctor.2.
Fill tank with water before backfilling to prevent float out during piping installation.3.
Before backfilling and pouring of slab secure cover(s) and riser/s (if necessary) to the unit(s) 4.
Backfill using crushed aggregate material approximately 3/4" size rock, or sand, 5.
with no fines.

6. Place 6" aggregate base under slab. Aggregate should be 3/4" size rock, or sand, with no fines.

7. Thickness of concrete around cover to be determined by specifying engineer. If traffic
loading is required the concrete slab dimensions shown are for guideline
purposes only.

8. Concrete to be 28 day compressive strength to 4000 PSI.

9. NO. 4 rebar (

10. Rebar to be 2 1/2" from edge of concrete.

11. Rebar spacing 12" grid. 4" spacing around access openings.

12. All pipe penetrations to be sleeved or have slip connections.

1/2") grade 60 steel per ASTM A615: connected with tie wire.

Stainless steel
anchor hook

Stainless steel
anchor strap

Stainless steel
Anchor plate

ANCHOR KIT INSTALLATION DETAIL

Stainless hardware

Clean out to grade
on inlet pipe of each
unit (by others)

Flow

Elevation View

CONCRETE SLAB DETAIL FOR TRAFFIC LOADING

(INTERIOR OR EXTERIOR)

(GB-250 Shown)

Risers to grade

Clean out to grade
on outlet pipe of each
unit (by others)

Flow

CONNECTIONS

1. Connect waste piping to the unit. When connecting GB-75 (2), GB-250 (2), GB-250 (3) and
GB-250 (4) see sheet #5 for multiple unit installation instructions.

Concrete slab

Native soil

Anchor Kit Installation Steps

Slide "Anchor Hook" over tie down point on end wall and1.
bolt to Anchor Strap.
Bolt "Anchor Strap" to "Anchor Plate" using provided hardware2.
For GB-50, Anchor Strap must be cut and shorteneed 3.
on-site to avoid piping.
Hold down force achieved by backfill weight acting on Anchor Plate.

4.
Anchor Plate may be bolted to concrete slab, if required, by using5.
holes provided in Anchor Plate.

2-Way cleanout
tee (by others)

Optional Anchor kit
see detail

2-Way cleanout
tee (by others)

Optional Anchor kit
see detail

SIDE VIEW DETAIL

For unit details see specification sheet for selected unit

(Connecting pipe and fittings by others)

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

Crushed aggregate
or sand

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

EXCAVATION AND BACKFILL DETAIL

(INTERIOR OR EXTERIOR)

DESCRIPTION:

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

Optional Anchor kit
see detail

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

3 of 7SHEET NUMBER:

N.EBERTDWG BY:

DATE:

03/25/2014

MATL: PE

4REV:

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

Made in the U.S.A

Flow Splitter
(TYP)
(Sold Separatly)

Parallel Installation of Multiple Grease Interceptor Systems

CAUTION: For Flow Rates of 100 GPM or Greater

(GB-75, GB-250 only)

Inlet manifold
(tpy. by others)

Series Installation of Multiple Grease Interceptor Systems

GB-75 (2 Series)

75 GPM, 1,232 Grease Lbs.

All piping between
units to be supplied
by others

GB-250 (2 Series)

100 GPM, 2,152 Grease Lbs.

(GB-75, GB-250 only)

Two-way cleanout
extended to grade
recommended before
and after each unit
if units are below grade
(typ.)

GB-75 (2 Parallel)

150 GPM, 1,232 Grease Lbs.

Outlet manifold
(tpy. by others)

Two-Way cleanout
tee (see Detail B)
(typ. by others)

GB-250 (2 Parallel)

200 GPM, 2,152 Grease Lbs.

Two-way cleanout
extended to grade
recommended before
and after each units
below grade
(typ. by others)

Flow from units

GB-250 (3 Parallel)

300 GPM, 3,228 Grease Lbs.

Flow from units

Two-Way
cleanout tee
(by others)

Flow to sanitary
sewer

GB-250 (3 Series)

100 GPM, 3,228 Grease Lbs.

GB-250 (4 Series)

100 GPM, 4,304 Grease Lbs.

IMPORTANT!

Remove flow plate

PARALLEL INSTALLATION OF MULTIPLE GREAT BASIN UNITS

For higher flow rates and higher grease storage requirements.•
For below or above grade installations follow installation instructions outlined

•
in installation packet.

•

Units must be piped as shown above to ensure that the units work properly as
the system is designed.
The units must be equally spaced to ensure the equal distribution of effluent flow.•
For systems that are installed below grade it is recommended to install a two-way•
clean out tee extended to finished grade before and after each unit for line cleaning

GB-250 (4 Parallel)

400 GPM, 4,304 Grease Lbs.

purposes.
Hybrid systems combining parallel and series installations are available per written•
approval from Schier Products.

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

Detail "B"

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

GB-250 (4 Series)

100 GPM, 4,304 Grease Lbs.

SERIES INSTALLATION OF MULTIPLE GREAT BASIN UNITS

For lower flow rates and higher grease storage requirements.•
For below or above grade installations follow installation instructions outlined •
in installation packet.
Units must be piped as shown above to ensure that the units work properly as•
the system is designed.
For systems that are installed below grade it is recommended to install a two-way•
clean out tee extended to finished grade before inlet of the primary and after
the outlet of the final secondary unit and between units if there is a long run of
pipe between units for line cleaning purposes.

DESCRIPTION:

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

SHEET NUMBER:
DWG BY:

N.EBERT

5 of 7

DATE:

03/25/2014

MATL:
REV:

PE

4

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

Made in the U.S.A

Inlet Diffuser Modifications

for Secondary Units of

series interceptor system

INTERIOR BELOW GRADE INSTALLATION INSTRUCTIONS

EXCAVATION

Install unit(s) as close as possible to fixtures being serviced.1.
Width and length of excavation shall be minimum 6" greater 2.
than the tank on all sides.
Depth of excavation shall be 6" deeper than tank bottom.3.
Set the tank in well-packed crushed aggregate material 4.
approximately 3/4" size rock, or sand, with no fines.

CONNECTIONS

Connect waste piping to the unit. 1.

BACKFILLING & FINISHED CONCRETE SLAB

Before backfilling and pouring of slab secure cover(s) to the unit(s).

1.
Backfill using crushed aggregate material approximately 3/4" size rock or sand 2.
with no fines.

3. Place 6" aggregate base under slab.

(GB-15, GB-20, GB-25)

INTERIOR ABOVE GRADE INSTALLATION INSTRUCTIONS

(GB-15, GB-20 GB-25)

GB-20 Shown

450 lb.
Max. load

Concrete

Crushed aggregate or sand backfill

16" Max.

GB-20 Shown

2,500 lb.
Max. load

2,500 lb.
Max. load

Riser (sold separately)

Rebar

CONNECTIONS

Install unit as close as possible to fixture(s) being served.1.
Connect waste piping to the unit. 2.

GB-15

GB-20

Native soil

GB-20 Shown

When the jobsite requires burying unit flush with floor without using
a riser kit, maximum cover/unit top load rating is 450 lbs.

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

GB-20 Shown with Riser

If concrete slab falls within body of unit, reinforce with rebar,
extending 6" beyond footprint of unit to connect main floor slab.

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

DESCRIPTION:

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

SHEET NUMBER:
DWG BY:

N.EBERT

4 of 7

DATE:

03/25/2014

MATL: PE
REV:

4

GB-25

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

Made in the U.S.A

Tools included (with base grease interceptor unit(s))

7/16" Nut driver tool/bit

•

Silver permanent marker

•

TeleGlide Riser (24 Series) Installation Guidelines

(GB-35, GB-50, GB-75, GB-250)

Tools Needed:

Tape measure

•

Regular or cordless drill with 1/2" chuck

•

Tools needed if Riser(s) require cutting:

Jigsaw or

•

Cordless circular saw or

•

Reciprocating saw

•

Riser Assembly Instructions/Steps:

If unit is to be installed on grade (on-the-floor), there is no need for any adjustments.

1.

Unit is ready to be put into service.

If unit is to be buried: Once unit is set so that the pipe connections line up with

2.

jobsite piping, measure total riser height needed from top of cover to finished
grade. Make sure you include any future tile work, etc. that may be installed
in your finished grade measurements. See figure 1.

Select according riser(s) needed based off Table 1.

3.

If riser(s) is needed, remove cover(s) from adapter and remove adapter from main

4.

unit by loosening upper clamp with included nut driver bit (lower band is factory
set do not adjust or remove). On the floor near the unit, insert adaptor into first riser
until it stops. If needed, insert bottom of first riser into top of second riser until it stops.
You may need to tighten upper clamps during this step to keep risers from shifting.
Adapter and riser(s) should sit level with each other. Removal of cover during this process
will ease assembly.

From the top of the adapter, measure your needed total riser height downward to the

5.

sidewall of the riser. Then, add
For example, if you have a GB-250 and need a 15-1/2” extension, you would measure
down from the top of the adapter 21-1/2” (15-1/2” + 6” = 21-1/2”). See Figure 2.

Refer to Table 2, Table 3 or Table 3a to determine if, and where, any cuts need to be made.

6.

If a cut needs to be made, make a circular line around the sidewall of the riser with the
included silver marker at your riser height
saw or reciprocating saw, cut along your line. Discard/recycle the cutoff scrap.

Whether the riser needs to be cut or not, make another mark with the silver marker on the

7.

sidewall of the riser a distance of
the edge just cut. If you did not make a cut (meaning your riser height

step 5

line was beyond the bottom edge of your riser), still mark the sidewall of the riser
4 INCHES above where your riser height
DO NOT cut this new line. Once the riser is installed into the main unit, this new line will end
up at the top of the gasket and will aid in re-assembly. See Figure 3.

IMPORTANT: Before the next step:

8.
Make sure both diffusers are installed inside the main unit at the appropriate locations

1.
and check if there needs to be any flow control adjustment on the inlet diffuser. Refer
to sheet 2 of the installation instructions for flow control adjustment.
Refer to sheet 1 of the installation instructions for leak/water testing procedures.

2.

Take riser(s) and adapters apart to reduce the weight during installation. Wipe all sidewalls and

9.
inside of gasket with a damp cloth to remove jobsite dust/debris. Install components into the main
unit starting from the lowest (cut) riser and working your way toward the finished floor level. Upper
clamps at each gasket need to be loosened or removed to aid in assembly. Once riser(s)/adapter
is inserted into gasket, upper clamp can be tightened.

Verify that the bottom of the lowest riser is protruding at least 2-1/2” but no more than 4” into

10.
the main unit from the top of the gasket. Your mark from step 7 should be at the top edge
of the gasket on the main unit. If measurements were made correctly, this should happen
automatically. See figure 4.

If tilting of the adapter is required to be flush with finished grade, it must be done AFTER all

11.
clamps have been tightened with riser(s)/adaptor in a vertical and level position. Tilting is
achieved by using the flexibility of the gasket. If tilting is done before clamps are tightened, a
perfect gasket seal may be compromised. Schier recommends tilting only the adapter versus the
entire riser assembly to make sure your riser height is maintained.

Tighten all clamps to a minimum of 5 and a maximum of 8 ft lbs. of torque. Use the same torque

12.
as you would tighten a rubber no-hub coupling.

The adapter must be adjusted

13.
Table 3 or Table 3a.

If jobsite riser height conditions change after the above steps have been completed, there

14.
may still be room for vertical adjustment in both directions. As long as minimum and maximum
overlaps are maintained (see Figure 4), the adapter/riser(s) can be adjusted/cut as many times
as necessary. Please follow these steps from the beginning to ensure the proper overlaps are
maintained.

Call Schier with questions or suggestions @ 1-800-827-7119 Customer Service Hours: 7AM-6 PM CST

(for GB-35 or GB-50) or 6” ( for GB-75 or GB-250).

5”

+dimension from step 5

4 INCHES

(3 INCHES for a GB-35 w/ 4” connections) above

. Using a jigsaw, circular

+ dimension from

upward

+ dimension from step 5

to achieve certain extension heights. See Table 2,

line would have been.

Upper clamp

Lower clamp

Finished floor

5. Adjust

6. Adjust

Adapter

Gasket

Unit

adapter
adapter

Cover

GB-250

(standard)

Riser Height

Adapter

Figure 1

upwards to reach 20" to 22"
upwards to reach 35" to 37"

Cover

Adapter

Gasket

Upper clamp
Lower clamp

7. Adjust

8. Adjust

Upper clamp

Lower clamp

Riser Height +
Distance from step 5

adapter
adapter

upwards to reach 19" to 21"
upwards to reach 34" to 36"

Adapter

Figure 2

GB-35, GB-50,

& GB-75

(standard)

Riser

Cover

Adapter

Gasket

Cover

Adapter

Upper clamp

Lower clamp

Adapter

Cut location "A"

Upper Clamp

Lower Clamp

Gasket

Cut location "B"

SR24

(short riser)

(optionsl component)

4"

Riser

Mark

Cut

Figure 3

1. Adjust

2. Adjust

3. Adjust

4. Adjust

5. For GB-75, adaptor will need to be cut short at
location"A" to reach 0" - 3-1/2" due to open top
diffusers.

adapter
adapter
adapter
adapter

upwards to reach 22" to 24"
upwards to reach 37" to 39"
upwards to reach 56" to 58"
upwards to reach 70" to 72"

Upper Clamp

Gasket

Lower Clamp

Unit

*3" for a GB-35 with 4" connections

Gasket

Cut location "C"

LR24

(long riser)

(optional component)

Must be at least

2-1/2" and cannot

exceed 4"*

Riser/Adapter

Figure 4

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

. ANY REPRODUCTION IN

DESCRIPTION:

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

SHEET NUMBER:

DWG BY:

N.EBERT

6 of 7

DATE:

03/25/2014

MATL:

REV:

4

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

PE

Made in the U.S.A

Tools included (with riser kit)

Silver permanent marker•

Tools Needed:

Tape measure•
Phillips head screwdriver•
Jigsaw or•
Cordless circular saw or•
Reciprocating saw•

TeleGlide Riser (16 Series) Installation Guidelines

(GB-15, GB-20, GB-25)

Cover
(included with
base unit)

Riser

Riser Assembly Instructions/Steps:

If unit is to be buried, you will need an SR16 riser kit (sold separately). The 16 Series TeleGlide Riser System for these 1.
models allows riser heights from 2-1/8" above standard unit up to 16". Only ONE riser may be used per base unit to allow
sufficient access to internal serviecable components. See Figure 5.
If more than 16" of riser height is needed, you will need to adjust jobsite requirements OR purchase the next available 2.
model with a 24 Series TeleGlide Riser System which allows taller riser heights.
Once unit is set so that pipe connections line up with jobsite piping, remove cover from unit. Fasten yellow gasketed ring to 3.
unit with hardware provided in separate riser kit. Ring flange with 4 bolt notches faces down against the unit. See Figure 1.
Push riser into ring until it stops (about 1 inch). See Figure 2.4.
Measure the distance from the top edge of the riser down to the finished floor. Make sure to account for any future tile work 5.
in your measurment. See Figure 2.
Remove riser from ring. Take measurement from step 5 from the BOTTOM of the riser upwards towards the top of the

6.
riser. Mark a line around the riser, and cut with handsaw, jig saw, or reciprocating saw. Remove debris from cut edge with
scraper, utility knife, or gloves. See Figure 3.
Place cut riser back into ring on unit until it stops. Fasten cover from unit into riser with the same 4 bolts from the unit. Unit 7.
is ready to be water tested and backfilled. Install finished floor. See Figure 4.

Remove cover

Install ring / bolts

Finished floor

Install
Riser

Riser Kit

X"

GB-15

Measure

Finished floor

GB-20

GB-25

Bolts

Gasketed Ring

SR16 Riser Kit

(Sold Separately)

Figure 1

Riser

Mark, cut,
and deburr

Measurement from
Figure 2

X"

Figure 3

NOTES:

Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.

Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions

Figure 2

Install Riser

Figure 4

THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF

PROPRIETARY AND CONFIDENTIAL

SCHIER PRODUCTS

SCHIER PRODUCTS

IS PROHIBITED.

Fasten Cover

. ANY REPRODUCTION IN

Finished floor

DESCRIPTION:

GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE

SHEET NUMBER:
DWG BY:

N.EBERT

7 of 7

DATE:

03/25/2014

MATL: PE
REV:

4

2-1/8" Min.

Minimum and maximum riser heights when units are buried.

Figure 5

Schier Products

9500 Woodend Rd

Edwardsville, KS 66111

Tel: [phone]

Fax: [phone]

www.schierproducts.com

Made in the U.S.A

16" Max.