Hi-Rate Permanent Media Commercial Swimming Pool …€¦ · · 2014-02-27Eureka Manufacturing...

Eureka Manufacturing CompanyP.O. Box 1473• Bismarck, ND 58502

800.472.1712 • 701.223.7930 • 701.224.8294 faxwww.eurekamanufacturing.com

Hi-Rate Permanent MediaCommercial Swimming Pool Filters

Specifications and Technical Data

Pages 6-7 HRL Tandem Tank Series Permanent Media Commercial Swimming Pool FiltersThe HRL Series Tandem Tank Filters consist of two single cell, single vessel permanent media filters joined together to increase the capacity of the filter system.

Eureka Manufacturing Company

Hi-Rate Permanent MediaCommercial Swimming Pool Filters

Contact Us Today!

Eureka Manufacturing Company800.472.1712 • 701.223.7930 • 701.224.8294 faxwww.eurekamanufacturing.com

2

Pages 4-5 HRL Series Permanent MediaCommercial Swimming Pool FiltersThe HRL Hi-Rate Permanent Media Swimming Pool Filters have been refined and tested with thousands of systems successfully installed and operating throughout the world. These filters are designed for and installed in large commercial aquatic centers, public swimming pools and commercial water parks.

Page 3 HRG Series Permanent MediaCommercial Swimming Pool FiltersThe HRG Series Hi-Rate Permanent Media Swimming Pool Filters are smaller versions of our traditional HRL Series Hi-Rate Permanent Media Swimming Pool Filters. These filters are ideally suited for use in small commercial swimming pools such as those often found in hotels or health clubs. They are also a popular choice for use with cooling towers and other industrial applications.

Pages 10-11 High Rate Filter Specifications

Pages 8-9 HRL2C Series Permanent MediaCommercial Swimming Pool FiltersThe HRL2C Series Hi-Rate Permanent Media swimming pool filters apply the same design concept as that of the traditional HRL Series Filters. However, the HRL2C Series filters are ideally suited for use wherever space is at a premium. Each HRL2C filter contains two complete filter cells in a single vessel, enabling each HRL2C filter to process twice the volume of a conventional filter of the same diameter.

Eureka Manufacturing Company800.472.1712 • 701.223.7930 • 701.224.8294 fax

www.eurekamanufacturing.com

3

30” 44 1/4” 14” 23 1/8” 32 1/4” 51” 2” 3/16” 30” 36” 52 1/8” 14” 26 1/2” 39” 60 3/8” 2 1/2” 3/16” 36” 42” 55” 15 3/4” 28 1/2” 41 1/4” 69 5/8” 3” 3/16” 36” 48” 55 3/4” 15 3/4” 28 1/2” 41 1/4” 75 5/8” 3” 3/16” 36”

HRG 30

HRG 36HRG 42

HRG 48

Model Num-ber

Head and Shell Thick-

ness

Height of Side Shell

Dimensions

A B (max.) C D E G (IPS)F

HRG Series Hi-Rate Filters

** Sand and gravel requirements are approximate. Please follow the operating manual for media installation instructions.

ModelNumber

TankDiameter

Sq. Ft. of Filter Area

Cubic Feet1/8’’-3/8’’

Gravel Required

Approx.Operating

Weight (lbs)

Cubic Feet #20 Sand Required

Approx. Bed Depth Required

Approx. Shipping Weight

(lbs)

Rate and Capacity

15 GPM Rate

20 GPM Rate

Gal. per 6 Hours

Gal. per 8 Hours

HRG 30

HRG 36

HRG 42

HRG 48

30” 4.9 74 — 26,640 35,520 4.5 4.5 11” 424 2,379

— 98 35,280 47,040

36” 7.1 107 — 38,520 51,360 7 10 17” 539 3,609

— 142 51,120 68,160

42” 9.6 144 — 51,840 69,120 10 14 17” 776 5,182

— 192 69,120 92,160

48” 12.6 189 — 68,040 92,160 14 18 17” 886 7,796

B

A

C

D

E

F

Auto Air Relief Vent

Lifting Lug Anode

Media Dump Port & Drain

G

HRL Series Hi-Rate Filters

4

48” 72 1/2” 19 1/8” 15” 21 1/4” 71” 4” 3/16” 48” 54” 75” 20 7/16” 15” 21 1/4” 77” 4” 3/16” 48” 60” 77 1/4” 21 1/2” 15” 21 1/4” 83” 4” 3/16” 48” 66” 79 3/4” 22 3/4” 15” 21 1/4” 89” 4” 3/16” 48” 66” 79 3/4” 22 3/4” 18 1/8” 18 1/8” 92 1/4” 6” 3/16” 48” 72” 81 3/4” 23 3/4” 18 1/8” 18 1/8” 98 1/4” 6” 3/16” 48” 78” 84 1/4” 25” 18 1/8” 18 1/8” 104 1/4” 6” 1/4” 48” 84” 87” 26 3/8” 18 1/8” 18 1/8” 110 1/4” 6” 1/4” 48” 90” 89 1/2’’ 27 5/8” 18 1/8” 18 1/8” 116 1/4” 6” 1/4” 48” 96” 91 3/4” 28 3/4” 18 1/8” 18 1/8” 122 1/4” 6” 1/4” 48” 96” 97 3/4” 29 3/8” 20 1/2” 20 1/2” 125 1/2” 8” 1/4” 54” 102” 94” 29 13/16” 18 1/8” 18 1/8” 128 1/4” 6” 5/16” 48” 102” 100” 30 1/2” 20 1/2” 20 1/2” 131 7/16” 8” 5/16” 54” 108” 102” 31 7/16” 20 1/2” 20 1/2” 137 1/2” 8” 5/16” 54” 120” 106 3/4” 33 7/8” 20 1/2” 20 1/2” 149 9/16” 8” 5/16” 54”

HRL 48

HRL 54HRL 60HRL 66-4HRL 66-6HRL 72HRL 78HRL 84HRL 90HRL 96-6HRL 96-8HRL 102-6HRL 102-8HRL 108HRL 120

Model Num-ber


ness


Dimensions

A B (max.) C D E F G (IPS)


E

Manway

Anode


Lifting Lug

Operating Instructions

Gauge Panel Assembly

Drain Media Dump Port & Drain

F

A

B

C

D

G

G

G

From Pump

To Waste

Return To Pool

6 9/16”

Flow RangesSingle vertical filters will service pools with total volumes ranging from 90,720 to 753,600 gallons. Flow ranges can be accommodated from 252 gallons per minute to 1,570 gallons per minute in standard vertical filters.



5

Tank assemblies are complete with an overhead distributor, lower collection tubes, gauge panel with two (2) 0 - 60 lb. gauges, manual and automatic air relief vents, face piping with butterfly valves and single lever control linkage. Systems listed do not include filter media or pump.

HRL Series Hi-Rate Filters

ModelNumber

TankDiameter



Gravel Req.

Approx.Operating

Weight (lbs)



Approx. Shipping

Weight (lbs)

Rate and Capacity

15 GPM Rate

20 GPM Rate

Gal. per 6 Hours

Gal. per 8 Hours

** Sand and gravel requirements are approximate. Please follow the operating manual for media installation instructions.

HRL 48

HRL 54

HRL 60

HRL 66-4HRL 66-6

HRL 72

HRL 78

HRL 84

HRL 90

HRL 96-6HRL 96-8

HRL 102-6HRL 102-8

HRL 108

HRL 120

48” 12.6 — 252 90,720 120,960 20 25 24” 1,524 8,010

54” 15.9 238.5 — 85,860 114,480 26 32 24” 1,644 9,657

— 318 114,480 152,640

60” 19.6 294 — 105,840 141,120 32 39 24” 1,766 12,464

— 392 141,120 188,160

66” 23.7 355.5 — 127,980 170,640 41 47 24” 1,899 14,739

66” 23.7 — 474 170,640 227,520 41 47 24” 2,246 15,125

72” 28.3 424.5 — 152,820 203,760 50 57 24” 2,388 18,142

— 566 203,760 271,680

78” 33.2 498 — 179,280 239,040 61 67 24” 2,978 21,700

— 664 239,040 318,720

84” 38.5 577.5 — 207,090 277,200 73 77 24” 3,186 25,663

— 770 277,200 369,600

90” 44.2 663 — 238,680 318,240 87 89 24” 3,402 31,776

— 884 318,240 424,320

96” 50.3 754.5 — 271,620 362,160 102 101 24” 3,657 36,686

96” 50.3 — 1,006 362,160 482,880 104 113 27” 4,407 38,681

102” 56.7 850.5 — 306,180 408,240 118 114 24” 4,548 42,430

102” 56.7 — 1,134 408,240 544,320 121 128 27” 5,405 44,795

108” 63.6 954 — 343,440 457,920 140 143 27” 5,665 53,305

— 1,272 457,920 610,560

120” 78.5 1,177.5 — 423,900 565,220 183 177 27” 6,314 64,845

— 1,570 565,200 753,600


HRL Series Tandem Tank Filters

6

Return to Pool (G)

130” 82 3/4” 15 3/4” 47 3/8” 79” 6” 3/16” 48”

142” 84” 15 3/4” 47 3/8” 79” 6” 3/16” 48”

154” 85” 15 3/4” 47 3/8” 79” 6” 3/16” 48”

166” 86 1/4” 15 3/4” 47 3/8” 79” 6” 3/16” 48”

180” 97 3/8” 18” 54 1/2” 91” 8” 3/16” 54”

192” 98 5/8” 18” 54 1/2” 91” 8” 1/4” 54”

204” 100” 18” 54 1/2” 91” 8” 1/4” 54”

216” 101 1/4” 18” 54 1/2” 91” 8” 1/4” 54”

228” 102 3/8” 18” 54 1/2” 91” 8” 1/4” 54”

240” 103 1/2” 18” 54 1/2” 91” 8” 1/4” 54”

Model Number Head and Shell Thick-

ness


Dimensions

A B (Max.) C D E G (IPS)HRL 248

HRL 254

HRL 260

HRL 266

HRL 272

HRL 278

HRL 284

HRL 290

HRL 296

HRL 2102


Drain

Lifting Lug


To Waste (G)

C

DE

AAuto Air Relief Vent Manway

Anode6 9/16”


From Pump (G)

B

Flow RangesFilters in tandem configuration will service pools with total volumes ranging from 136,080 to 1,088,640 gallons. Flow ranges can be accommodated from 378 gallons per minute to 2,268 gallons per minute in standard dual configurations.

7



** Sand and gravel requirements are approximate. Quantities shown are estimated for both tanks. Use only half the total amount in each tank. Please follow the operating manual for media installation instructions.

Tank assemblies are complete with an overhead distributor, lower collection tubes, gauge panel with two (2) 0 - 60 lb. gauges, manual and automatic air relief vents, face piping with butterfly valves and single lever control linkage. Systems listed do not include filter media or pump.

HRL Series Tandem Tank Filters

ModelNumber

TankDiameter



Gravel Required

Approx.Operating

Weight (lbs)




(lbs)

Rate and Capacity

15 GPM Rate

20 GPM Rate

Gal. per 6 Hours

Gal. per 8 Hours

HRL 248

HRL 254

HRL 260

HRL 266

HRL 272

HRL 278

HRL 284

HRL 290

HRL 296

HRL 2102

48” 25.2 378 — 136,080 181,440 40 52 24” 2,119 15,162

— 504 181,440 241,920

54” 31.8 477 — 171,720 228,960 52 64 24” 2,360 18,454

— 636 228,960 305,280

60” 39.2 588 — 211,680 282,240 64 80 24” 2,603 24,448

— 784 282,240 376,320

66” 47.4 711 — 255,960 341,280 82 96 24” 3,201 29,596

— 948 341,280 455,040

72” 56.6 849 — 305,640 407,520 100 132 28” 3,485 40,020

— 1,132 407,520 543,360

78” 66.4 996 — 358,560 478,080 122 155 28” 5,081 47,142

— 1,328 478,080 637,440

84” 77.0 1,155 — 415,800 554,400 146 180 28” 7,654 56,159

— 1,540 554,400 739,200

90” 88.4 1,326 — 477,360 636,480 174 206 28” 9,125 69,588

— 1,768 636,480 848,640

96” 100.6 1,509 — 543,240 724,320 208 234 28” 9,525 83,655

— 2,012 724,320 965,760

102” 113.4 1,701 — 612,360 816,480 242 265 28” 10,275 89,590

— 2,268 816,480 1,088,640


HRL2C Series Hi-Rate Filters

8

48” 97” 17 1/4” 32 3/4” 32 3/4” 79” 6” 3/16” 72”

54” 99 1/2” 18 1/2” 32 3/4” 32 3/4” 82” 6” 3/16” 72” 60” 101 3/4” 19 5/8” 32 3/4” 32 3/4” 85” 6” 3/16” 72” 66” 104 1/4” 20 7/8” 32 3/4” 32 3/4” 90” 6” 3/16” 72” 72” 106 1/4” 21 7/8” 32 3/4” 32 3/4” 106” 8” 3/16” 72” 78” 108 3/4” 23 1/8” 32 3/4” 32 3/4” 109” 8” 1/4” 72” 84” 111 1/2” 24 1/2” 32 3/4” 32 3/4” 112” 8” 1/4” 72” 90” 114” 25 3/4” 32 3/4” 32 3/4” 115” 8” 1/4” 72”

HRL 2C48

HRL 2C54HRL 2C60HRL 2C66HRL 2C72HRL 2C78HRL 2C84HRL 2C90

Model Num-ber


ness


Dimensions

A B (max.) C D F G (IPS)E

Anode


B

A

G

D

E

G

G

F


Lifting LugTo Waste

From Pump

C

Manway



Drain

6 9/16’’

Return to Pool

Tank assemblies are complete with overhead distributors, lower collection headers, gauge panel with two (2) 0 - 60 lb. gauges, two (2) 12” x 16” manways, manual and automatic air relief vents, face piping with butterfly valves and single lever control linkage. Systems listed do not include filter media or pump.



Flow RangesFilters in dual configuration will service pools with total volumes ranging from 136,080 to 848,640 gallons. Flow ranges can be accommodated from 378 gallons per minute to 1,768 gallons per minute in standard HRL2C filter systems.

9

** Sand and gravel requirements are approximate. More gravel is required in the lower cell than the top cell. Please follow the operating manual for media installation instructions.

HRL2C Series Hi-Rate Filters

Model Number

Tank Di-ameter



Gravel Req.Per Cell

Approx.Operating

Weight (lbs)

Cubic Feet #20 Sand RequiredPer Cell

Approx. Bed Depth RequiredPer Cell


(lbs)

Rate and Capacity

15 GPM Rate

20 GPM Rate

Gal. per 6 Hours

Gal. per 8 Hours

HRL 2C48

HRL 2C54

HRL 2C60

HRL 2C66

HRL 2C72

HRL 2C78

HRL 2C84

HRL 2C90

48” 25.1 378 — 136,080 181,440 10 upper 19 18” 1,850 12,385

— 504 181,440 241,920 15 lower

54” 31.8 477 — 171,720 228,960 12 upper 24 18” 2,060 9,657

— 636 228,960 305,280 20 lower

60” 39.2 588 — 211,680 282,240 15 upper 30 18” 2,280 12,464

— 784 282,240 376,320 26 lower

66” 47.5 711 — 255,960 341,280 21 upper 36 18” 2,530 23,240

— 948 341,280 455,040 34 lower

72” 56.5 849 — 305,640 407,520 26 upper 43 18” 3,290 27,860

— 1,132 407,520 543,360 43 lower

78” 66.3 996 — 358,560 478,080 31 upper 50 18” 4,195 33,710

— 1,328 478,080 637,440 52 lower

84” 77 1,155 — 415,800 554,400 36 upper 58 18” 4,555 39,195

— 1,540 554,400 739,200 63 lower

90” 88.4 1,326 — 477,360 636,480 41 upper 67 18” 4,955 45,190

— 1,768 636,480 848,640 75 lower

10

Part I - General

Prologue:.01 It is the intent of these specifications to describe a swimming pool High-Rate Sand Filter constructed of A-36 carbon steel.

.02 This specification includes but is not limited to the following components: • Filter Tank(s) • Interior Lining • Interior Distribution System(s) • Face Piping with Valves • Single Lever Control Linkage • Fully Automatic Backwash • Filter Media

.03 The filter system described in these specifications reflects the models HRL and HRL2C series filters, fabricated by Eureka Manufacturing Company, Eureka, South Dakota, U.S.A.

.04 It is not the intent of these specifications to limit competition. Any substitute system must be approved by the Architect/Engineer ten (10) days prior to the bid date. All base bids must include the specified filter. Any substitutes shall be quoted by the bidding contractors as an alternate.

Reference:.01 The following standards shall be incorporated herein, but not limited to: NSF - NSF International AISI - American Iron and Steel Institute ANSI - American National Standards Institute AWS - American Welding Society ASTM - American Society for Testing Metals ASME - American Society of Mechanical Engineers

Quality Assurance:.01 The manufacturer shall have a minimum of ten (10) years experience in the fabrication of High-Rate Sand Filters for public swimming pools. The filter system shall be of the vertical type and be tested and certified by NSF International for a maximum flow of 20 gallons per minute per square foot of filter area.

.02 The hydraulic calculations shall be performed to assure compliance with code requirements as well as guarantee the proper recirculation rates.

.03 The material loading and storage shall be performed by the contractor. The materials shall not be stacked or stored in a manner that may cause damage. The material shall be stored in accordance with the manufacturer’s specifications.

Submittals:.01 Product data and shop drawings: Submit product data, shop drawings and installation instructions for the filter and related components clearly indicating rated capacities, gauges of material, finishes, etcetera.


Warranty:.01 The filter(s) shall be guaranteed by the manufacturer for workmanship, materials and performance for a period of ________( )year(s). The warranty will not include abusive or improper treatment of the filter during construction or under operation. The company shall have no liability to correct any damage caused by neglect, misuse, improper chemical treatment of pool water, or any other external causes.

.02 The manufacturer shall provide complete instructions detailing proper care, maintenance and cleaning of the filter system.

Part II - Products:

Filter System Capacity:.01 The filter system shall consist of ________ ( ) filter tank(s), complete with face piping, operating valves, complete gauge panel with 4.5” (inch) gauges, automatic air relief vent, backwash sight glass, bottom drain connection with internal media retainer, internal distribution system, and single lever control linkage, unless otherwise specified.

.02 The system shall be fabricated and fully assembled by the original equipment manufacturer. The face piping and system accessories shall be removed from the system and shipped individually. The collection and diverter headers are to be factory installed and internally braced for transit.

Filter Area:.01 The filter system shall consist of ________ ( ) High-Rate Permanent Media Filter(s) with a total effective area of ________ sq. ft. When operating at _______ gpm per square foot of filter area, the filter system will have a capacity of filtering ________ gallons in ________hours.

Filter Tank:.01 The tank shall include _______ ( ) standard 12” (inch) x 16” (inch) manway(s) complete with steel cover, gasket, bolt, nut and yokes. On HRL Single and Tandem Tank Systems, the manways shall be located in the top head. On HRL2C Systems, the manways shall be located in the side shell.

.01 (option) The tank shall include ________ ( ) oversized ________x________ manway(s) complete with steel cover, gasket, bolt, nut and yokes. On HRL Single and Tandem Tank Systems, the manways shall be located in the top head. On HRL2C Systems, the manways shall be located in the side shell.

.02 The filter tank(s) shall be ________ in diameter with a side shell height of ________ and shall be constructed of high quality type A36 carbon steel. The tank shall be ________ thick. Dished and flanged heads shall be ________ thick. Single and Tandem Tank Systems shall be suitable for a working pressure of 60 psi and hydrostatically tested at 90 psi. HRL2C Systems shall be suitable for a working pressure of 50 psi and hydrostatically tested at 75 psi.

.03 The filter system shall include ________ ( ) media dump port(s) and drain(s) in the side shell. Influent and effluent connections shall be located in the tank side shell and shall be schedule 40 steel pipe.

High-Rate Filter Specifications

11



Engineering Notes

Head loss through all Hi-Rate Permanent Media Filters is three (3) psi on startup. The fitler should be backwashed when a 15 psi differential is indicated on the influent and effluent pressure gauges.

When sizing the main recirculating pump for the filters, calculate head loss for the maximum dirt load at 15 to 20 psi through the filter and face piping.

High-Rate Filter Specifications

.04 Each filter tank shall be equipped with replaceable sacrificial anodes that protect the tank from corrosion caused by electrolysis.

.05 HRG filter tank(s) shall be supported by strap legs up to and including 42” (inches). HRL filter tank(s) shall be supported by angle iron legs up to and including 120” (inches).

.05 (option) Adjustable jack legs are available on all filter sizes.

.06 HRL2C series filters include an inner separating partition between cells which shall be no less than ________” (inch(es)) thick. Each cell shall be equipped with the necessary connections for the influent and effluent piping.

Interior Lining:.01 All interior, wetted surfaces of the filter tank(s) and all penetrations shall be degreased and sandblasted prior to lining installation.

.02 Tank lining shall be an epoxy-type coating, and shall be applied to all wetted surfaces of the tank and tank penetrations in two successive coats. Twelve hours of curing time shall be allowed between coats, and the total thickness shall be 8 to 12 mils.

.03 The finished lining shall be smooth, dust free, and completely nontoxic. The lining shall be visually examined and spark tested for pinholes.

Exterior Coating:.01 The filter shall be painted with one (1) coat of zinc oxide primer after the trial assembly by the original equipment manufacturer.

Internal Distribution System:.01 Filter internal equipment shall include an upper distribution assembly and a lower collection system, hydraulically balanced to prevent turbulence and/or displacement of the media during filtration. Standard pipe arrangement or internal valving systems will not be acceptable.

.02 The upper distribution system shall include hydraulic injection molded ABS plastic distribution lenses located uniformly over the filter bed. They shall be joined to the influent connection by means of a schedule 80 PVC pipe header.

.03 The lower collection system shall consist of a schedule 80 PVC pipe header and cycolac laterals designed to retain the filter media with minimum head loss. The internal distribution system shall be designed to promote media bed circulation during backwash.

Face Piping with Valves:.01 The High-Rate Sand Filter(s) shall be provided with all the necessary face piping and valves which shall be pre-assembled by the original equipment manufacturer. The face piping shall consist of flanged standard cast iron fittings and a sight glass.

.01 (option) The High-Rate Sand Filter(s) shall be provided with all the necessary face piping and valves which shall be pre-assembled by the original equipment manufacturer. The piping shall consist of schedule 80 PVC pipe and spools with standard PVC fittings and a sight glass.

.02 Face piping shall be ________” (inch(es)) I.P.S. with flanged fittings, matching influent and effluent connections on the filter tank.

.03 The butterfly valves up to and including 8” (inches) shall be of the wafer type with a cast iron body, nylon coated disc, stainless steel stem, with a 100 psi bubble tight shut off.

.03 (option) The butterfly valves up to and including 8” (inches) shall be of the wafer type with a PVC body, PVC disc, stainless steel stem, with a 100 psi bubble tight shut off.

.04 Piping is to be drilled and tapped at the influent and effluent ports to accommodate gauge panel tubing.

.05 A sight glass designed for 150 psi working pressure shall be fitted on the backwash line. It shall consist of a 1.5” (inch) I.P.S. cast brass base and cap with a 3” (inch) diameter lens.

Single Lever Control Linkage:.01 The linkage shall consist of a unilever operator linkage complete with double operator arms of aluminum which shall be heat treated to a T6 temper for strength and durability. Couplings and jam nuts shall be provided to facilitate adjustment of linkage. Connecting rods and high strength shear pins shall also be provided.

.02 Valves shall be set to move concurrently with one pair opening and the other pair closing to avoid water hammer and to simplify operation.

Fully Automatic Backwash:.01 (option) The automatic backwash controller shall switch the filter system from filtration to the backwash cycle. Electronic systems control the timing and duration of the backwash while automatically interrupting operation to a safe mode if failure occurs.

Filter Media:.01 (not included) Filter media shall consist of uniformly graded silica sand which shall be free of limestone or clay. Filter media shall be grade #20, effective size of .45 - .55 millimeter with a uniformity coefficient of 1.75 maximum. Support media shall be hard, uniformly graded 1/8” (inch) to 3/8” (inch) gravel. No limestone or clay shall be present. Alternative media must be approved by Eureka Manufacturing Company.

.01 (option) Alternate filter media shall consist of zeolite as provided by Eureka Manufacturing Company, -20 +40 grade, particle size -.85mm to +.425mm with a uniformity coefficient of 1.6 maximum. Support media shall be hard, uniformly graded 1/8” (inch) to 3/8” (inch) gravel. No limestone or clay shall be present.

HRL Series Permanent MediaCommercial Swimming Pool Filters

The Hi-Rate filter concept utilized in Eureka Manufacturing Company’s Hi-Rate Permanent Media Filters has been refined and tested with thousands of systems successfully installed and operating throughout the world. These filters are designed for and installed in large commercial aquatic centers, public swimming pools and commercial water parks.

Eureka Manufacturing CompanyP.O. Box 1473• Bismarck, ND 58502 800.472.1712 • 701.223.7930 • 701.224.8294 faxwww.eurekamanufacturing.com

Automatic Backwash Systems

It is possible to have a fully automated, microprocessor-controlled system installed on any Eureka Hi-Rate Sand Filter. The programmable system will switch your Hi-Rate Sand Filter from filter mode, to backwash mode, and return it to filter mode without supervision.

Backwashing reverses the normal flow of water within the filter. The agitation within the filter during the backwash cycle releases the trapped

particles, which are then flushed from the filter. Once the recommended backwash cycle is complete, the filter can immediately be returned to service. The total time devoted to backwashing the filter is usually only about four minutes.

Reduce your long-term labor costs by installing a Eureka HRL Series Sand Filter. No labor intensive procedures between cleaning cycles are required. Contact us at 1-800-472-1712 today!

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Hi-Rate Permanent Media Commercial Swimming Pool …€¦ · · 2014-02-27Eureka Manufacturing...

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