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INSTALLATION GUIDE
GB-500-B
Contents
Special Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Getting to Know the GB-500-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Series Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Part #: 4075-005-01
Find these instructions online at: schierproducts.com/gb-500-b
100 GPM 99% Efficient Great Basin
Grease Interceptor
Indoor/Outdoor
™
913-951-3300 | schierproducts.com
© Copyright 2020 Schier Products Company, 10/12/2020
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Summary of Contents for Schier GB-500-B
- Page 1 Special Precautions ........2-3 Getting to Know the GB-500-B ......4 Installation .
- Page 2 SPECIAL PRECAUTIONS For Schier Grease Interceptor Installations - Failure to follow this guidance voids your warranty DO NOT AIR TEST UNIT OR RISER SYSTEM! Do not install this unit in any manner except as described in these instructions. Doing so may result in property damage, personal injury or death.
- Page 3 SPECIAL PRECAUTIONS For Schier Grease Interceptor Installations - Failure to follow this guidance voids your warranty Secure Cover Adapters Below Grade Installation Slab Requirements Cover adapters must be secured to A concrete slab to finished grade with rebar is required when installing base units in above grade interceptor below grade.
- Page 4 GETTING TO KNOW THE GB-500-B Inlet diffuser cover (white) Pickable cast iron cover (standard) 10. 4" cleanout plug (x4) 19. Composite cover bolts and washers (x8) 2. Cover gasket 11. Inlet diffuser cover (white) 20. Bolted composite cover (optional) 3. Safety Star® access restrictor (x2) 12.
- Page 5 Excavate hole at least 18" larger than interceptor on all sides and 12" deeper than tank bottom. Lay a level bed of well-packed, crushed aggregate (approximately 3/4" size rock or sand, with no fines) in the base of hole. Schier | GB-500-B Installation Guide page 5 of 13...
- Page 6 Unscrew foot retaining nut and remove inlet diffuser foot. Rotate diffuser toward chosen inlet and replace foot, ensure it points toward unit front wall. Hand tighten foot retaining nut. Insert diffuser into chosen inlet and hand tighten retaining nut. page 6 of 13 Schier | GB-500-B Installation Guide...
- Page 7 Cap unused connections(all configurations) Screw in provided 4" cleanout plugs using pipe thread sealant or tape approved for use with plastics. Do not cap the inlet or outlet connections attached to the diffusers. Schier | GB-500-B Installation Guide page 7 of 13...
- Page 8 PVC primer/cement. Extension Finished installation handle length should be about 12" showing optional extension handle shorter than total riser height. page 8 of 13 Schier | GB-500-B Installation Guide...
- Page 9 Place unit into final position and set level. Mechanically couple inlet and outlet drainage lines to unit. Do not solvent weld. Ensure all upstream fixtures are trapped. Vent per local code. Installation of 2-way cleanout tees to grade (by others) is recommended for buried installations. Schier | GB-500-B Installation Guide page 9 of 13...
- Page 10 Have a Leak? Call customer DO NOT AIR TEST UNIT OR RISER SYSTEM! care at 913-951-3300 Doing so may result in property damage, personal injury or death. Hours 8am-5pm CST, M-F page 10 of 13 Schier | GB-500-B Installation Guide...
- Page 11 Bring Covers Flush-to-Grade The GB-500-B is ready for burial depth of 49-1/2" from finished grade to bottom of tank (or 10-1/2" to centerline of inlet). Deeper burials will require extending the cover adapters and possibly adding risers. Measure dimension X to determine riser height needed.
- Page 12 (including but not limited to tidal surge areas, floodplains and areas that receive storm water) the GB-500 must be installed with either (2) Schier model AK1 anchor kits or 1 model AK2 anchor kit (with deadman anchors by others). Deadmen...
- Page 13 Two-way cleanout tees extended to finished grade should be installed before the first unit inlet, Side View of 3 GB-500-B Units Piped in Series after the last unit outlet and in between units (if there is a long run of pipe between units) for line cleaning purposes.
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