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Water Management Systems
Filtration and Separation Systems
SGM-250A Sand and Gravel Filter
CSM Centri Separator
BFS Bag Filter
SWF Full Flow Strainers
Product Manual
Sterling, Inc.
2900 S. 160
Street
th
New Berlin, WI 53151
Tel [262] 641-8610
Fax [262] 641-8653
Part Number A0568850
Revision C
Bulletin No. SC7-600.4
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Summary of Contents for Sterling SGM-250A
- Page 1 Filtration and Separation Systems SGM-250A Sand and Gravel Filter CSM Centri Separator BFS Bag Filter SWF Full Flow Strainers Product Manual Sterling, Inc. 2900 S. 160 Street New Berlin, WI 53151 Tel [262] 641-8610 Fax [262] 641-8653 Part Number A0568850 Revision C Bulletin No.
- Page 2 Sterling/Sterlco is committed to a continuing program of product improvement. Specifications, appearance, and dimensions described in this manual are subject to change without notice. © Copyright Sterling/Sterlco 2008 All rights reserved. Effective 4/14/2008 Part No. A0568850 Revision C Bulletin No. SC7-600.3...
- Page 3 Safety Considerations Sterling/Sterlco water management systems products are designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes. To avoid possible personnel injury or equipment damage when installing, operating, or maintaining this equipment, use good judgment and follow these safe practices: Follow all SAFETY CODES.
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Page 4: Table Of Contents
Table of Contents Introduction............... 5 General Description Sand and Gravel Automatic Backwash Filters Centri-Separator Filter Systems BFS Series Bag Filters SWF Series Full Flow Stainless Steel Filters Shipping Information ..........8 Unpacking and Inspection In the Event of Shipping Damages If the Shipment is Not Complete If the Shipment is Not Correct Returns... -
Page 5: Introduction
Introduction General Description Filtration is used on cooling tower systems or chilled water systems requiring removal of large, heavy-duty suspended solids. Four filtration systems are available; sand and gravel filters, centrifugal separators, bag filters, and strainers. Sand and gravel filters use two layers of gravel and one layer of sand for filtration. -
Page 6: Sand And Gravel Automatic Backwash Filters
Sand and Gravel Automatic Backwash Filters Sterling/Sterlco sand and gravel filters are shipped complete with: • Tank • Valve manifold • Gauges • Initial charge of sand and gravel The system switches valves automatically. Two backwash control mechanisms are available. Backwash cycles can be based on a time cycle (SGM-250A) or pressure differential across the unit (SGM- 250P). -
Page 7: Bfs Series Bag Filters
Note: Centrifugal separation systems must not be used for closed- loop or chilled water systems; back flushing eliminates chemicals added to the system. 1-4 BFS Series Bag Filters BFS Series bag filters can be used for full flow or bypass applications. -
Page 8: Shipping Information
Shipping Information Unpacking and Inspection You should inspect your Sterling/Sterlco water management systems and products for possible shipping damage. Thoroughly check the equipment for any damage that might have occurred in transit, such as broken or loose wiring and components, loose hardware and mounting screws, etc. In case of breakage, damage, shortage, or incorrect shipment, refer to the following sections. -
Page 9: If The Shipment Is Not Complete
Determine that the item was not inadvertently taken from the area before you checked in the shipment. Notify Sterling/Sterlco immediately of the shortage. If the Shipment is Not Correct If the shipment is not what you ordered, contact the parts and service department immediately at [262] 641-8610. -
Page 10: Installation
Installation Installing the Sand and Gravel Backwash Filter Selecting an Installation Site Place the unit on a suitable and level foundation, preferably a concrete floor or pad and near the pump for best operation. The location you select must also have an open drain to a sewer for backwash, a hookup to city water, and a 110-volt electrical source. -
Page 11: Installing The Centri-Separator System
(about 1 m) suction leg, including a priming valve/connection for startup. Connect the pump suction leg to the pump suction connection. Sterling/Sterlco recommends that you use a hose at least 1½” (about 38 mm) in diameter for clean water flow to the pump tank. -
Page 12: Installing The Bfs Series Bag Filter
Complete the installation of your Centri-Separator system by plugging the unit into a 110-volt source of electricity. The Centri- Separator system is now ready to use. Installing the BFS Series Bag Filter Selecting an Installation Site Place the unit on a suitable and level foundation, preferably a concrete floor or pad and near the pump for best operation. -
Page 13: Specifications
Specifications Sand and Gravel Automatic Backwash Filters • Model SGM-250A is equipped with automatic valves operated from a time device so that backwash is accomplished periodically on an automatic basis. Dimensions in. (cm) Shipping Pressure Model weight differential number lbs. backwash SGM-250A 1,800... -
Page 14: Operation
Operation Sand and Gravel Automatic Backwash Filter Adjusting Timer Adjust the time control of the SGM-250A if desired. The factory set timer is set to backwash four minutes every 24 hours. Frequency and duration may be reset as required. See diagram below to adjust timer. -
Page 15: Centri-Separator System
The Model SGM-250P backwashes based upon pressure differential across the filter media. Additionally, an adjustable timer allows back washing for up to five minutes. The factory setting is four minutes. The pressure differential switch is adjustable for pressure drop and dead band. -
Page 16: Bfs Series Bag Filters
BFS Series Bag Filters Bags are easily removed from the top of the filter housing. Before removing the bag filter be sure that pressure has been relieved and that the filter housing has been isolated to prevent spill over. ! CAUTION SEVERE INJURY WILL RESULT IF HOUSING COVER IS REMOVED UNDER PRESSURE. - Page 17 preferably a garden hose if possible. Return it to the filter housing ensuring that the U-shaped gasket fits securely to the bottom of the strainer. Make sure that the strainer head gasket is secure. Reposition the strainer cover on top of the filter housing. On those models with a band clamp, replace the band clamp around the strainer cover and housing latching the T-bolt.
- Page 18 Call [262] 641-8610 Monday—Friday, 8am—5pm CST Let us install your system. The Contracting Department offers any or all of these services: project planning; system packages including drawings; equipment, labor, and construction materials; and union or non-union installations. Sterling/Sterlco 2900 S. 160 Street New Berlin, WI 53151 [262] 641-8600 •...
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