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Tower Drying

This product is protected under one or more of the following U.S. Patents: 6233843, 6189235, 6141886, 6101742, 6098305 6088929, 6076276, 6073367, 6073364, 5570521 6457256, 6035544, 5860221, 5653043, 5651193 5604996, 5566470, 5400525

gSi FeaTureS

2 Self cleaning cushion box on plenum roof reduces grain damage and plenum roof wear.

3 Stainless Steel outside sheets greatly extends the life of the dryer. The screens utilize different size to reduce emissions.

5 Heavy-duty overall construction results in an extra rigid structure on a minimum of ground space.

7 Inside and outside safety ladders, cages and catwalks provide safe and easy access to all areas of the dryer.

10 Reducer cone equalizes air velocity past burners for optimum combustion and provides step-in access to burner assembly.

11 Walk-in heat section provides easy access for interior cleaning.

4 The 12-3/4" grain columns surrounding the heat plenum chamber allows the grain to receive all BTU's from the burner, improving efficiency while providing superior noise reduction.

9 In-line Maxon NP-LE-AL series burners provide even heat and efficient combustion from either natural gas or LP vapor. Aluminum extrusion reduces burner maintenance.

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8 Patented Grain Inverters are used to equalize column moisture content and temperature of the grain column, greatly improving quality and efficiency.

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1 Gravity inlet does not require leveling auger, reducing the number of moving parts.

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6 Uniform low velocity heated air improves efficiency and quality as well as reducing particulate emissions.

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15 Recycling heat from the cooling grain results in significant fuel savings.

16 Walk-in cool section provides easy access to blowers and metering system.

17 Patented discharge system provides simple, uniform metering and quick dryer clean out.

18 Industrial quality components (including Maxon valves and burners) ensure years of reliable service.

14 Internally mounted tubular centrifugal blowers deliver high volumetric airflow to the pressure heat and suction cool sections.

13 Internal mounting provides the added benefit of ultra quiet operation as the surrounding grain creates a natural noise barrier.

PLC Control System provides one of the most advanced and reliable dryer controls on the market.

19 Weather-proof NEMA IV cabinets and NEMA rated electrical components ensure safe and reliable operation in all conditions.

Discharge area

Cool, dried grain passes from the cooling section of the dryer into the sealed, hoppered discharge section. Grain is gravity fed down a 45° hopper to GSI’s patented metering drum. This drum provides a positive, yet gentle means of metering grain uniformly from each column of the dryer and discharging it out the center of the dryer. The drum is driven by a variable speed inverter operated AC motor. The hopper bottom design of the dryer eliminates troublesome sweep augers and sweep arms and provides for quick dryer clean-out.

Blower(s) anD Burners

Depending on the size of the dryer, one, three, or four industrial duty blowers are used in the GSI Tower Dryer. These internally mounted, in-line mixed flow blowers are sized to operate at slow speeds, which means low noise levels, low electrical usage and long blower and motor life.

Airflow from the blowers is ducted across a Maxon NP-LE-AL line burner. The burner can operate on either natural gas or LP vapor. The burners are sized and profiled to provide even, efficient heat distribution to the drying section of the dryer. (fuel oil burners are optional)

“The metering drum is virtually maintenance free. You get an even flow with no buildup and stalks are never a problem.”

superior workmanshipStandard operational features on the dryer include double Maxon gas blocking valves on the gas train, exhaust air temperature sensors, plenum high temperature limits, grain level monitoring, continuous flame monitoring, airflow monitoring and motor overload monitoring.

We take pride in the design and workmanship that goes into the Tower Dryer, and stand behind it with a one full year parts and labor warranty.

customer serviceShould you ever need service on your GSI Tower Dryer, GSI has a professional staff of service technicians who can take care of your service needs. Also, many local GSI dealers have been trained in the service aspects of the Tower Dryer, and can provide quick, reliable service if needed.

12 Divider hopper separates the heating and cooling sections while preventing build-up of particulate matter.

patenteD grain inverters

promote more even drying, higher test weights, and also help reduce operating costs.

While the older grain exchangers move grain from the inside of the grain column to the outside of the column in 6” columns, the patented GSI Grain Inverters put a new twist on this process.

GSI's Grain Inverters move all grain, except the outer two inches, within the column to eliminate over-dried grain and to maximize drying efficiency and grain quality. These patented Grain Inverters redirect the warmest grain from the inside of the column to be next to the wettest grain left at the outside of the column where it is dried by the captured heat which would have otherwise escaped the dryer. (See diagram to right for visual illustration.)

This process maintains optimal grain temperature, thus maximizing grain quality while using less fuel and significantly reducing operating costs.

A convenient clean-out door also provides easy access for quick maintenance.

Key FeaTureSEntering Drying Column

130° at Cooling Section

Ple

num

210

°

Exh

aust

Air

70°F

/21°

C

75°F

/24°

C80

°F/2

7°C

90°F

/32°

C

100°

F/38

°C

110°

F/43

°C

120°

F/49

°C

130°

F/54

°C

70°F

/21°

C

75°F

/24°

C80

°F/2

7°C

90°F

/32°

C

100°

F/38

°C

110°

F/43

°C

120°

F/49

°C

130°

F/54

°C13

0°F/

54°C

70°F

/21°

C

130°

F/54

°C70

°F/2

1°C

130°

F/54

°C70

°F/2

1°C

130°

F/54

°C70

°F/2

1°C

130°

F/54

°C70

°F/2

1°C

130°

F/54

°C70

°F/2

1°C

130°

F/54

°C

70°F

/21°

C

130°

F/54

°C70

°F/2

1°C

Entering Drying Column

Up to 205° Entering Cooling Section

Ple

num

210

°

Exh

aust

Air

80°F

/27°

C

87°F

/31°

C95

°F/3

5°C

102°

F/39

°C

109°

F/43

°C

116°

F/47

°C

123°

F/51

°C

130°

F/54

°C20

5°F/

96°C

190°

F/88

°C

170°

F/77

°C

150°

F/66

°C

130°

F/54

°C

110°

F/43

°C10

0°F/

38°C

90°F

/32°

C

70°F

/21°

C

70°F

/21°

C

70°F

/21°

C

70°F

/21°

C

70°F

/21°

C

70°F

/21°

C70

°F/2

1°C

70°F

/21°

C

Drying without the gsi grain inverters.

Drying with the gsi grain inverters.

DuraBle construction…years of reliaBility

The GSI control box is housed in a metal NEMA IV enclosure. The windowed design of the box allows all dryer operations to be viewed through the lockable windowed door and also protects all control switches, indicators, and controls. For convenience, the control box can be remote mounted or mounted at the dryer. The touch screen control panel, pictured at the left, is totally computerized using Allen Bradley industrial controls and communicates with the dryer power box via an DH485 communication link.

The dryer power box pictured above is mounted in a large NEMA IV enclosure, all of the electrical power and dryer monitoring components for the dryer are controlled by an Allen Bradley SLC controller. The electrical layout and wiring of this box is MET laboratories certified, making the box meet all U.S. and Canadian safety standards. This will provide a long reliable control system for the dryer.

Full Color Graphical Display provides continuous visual feedback on the current dryer status as well as a convenient means of setting operating parameters and options. Most set points and status screens are accessed by simply touching an on-screen object.

The GSI Tower Dryer’s electronic control panel indicates any malfunctions via a flashing display. This process saves valuable time in the area of trouble-shooting.

GSI’s touch screen control panel is the most advanced and reliable dryer control system on the market. It offers computerized control of all dryer functions and self diagnoses dryer problems eliminating the guesswork associated with traditional controllers. The touch screen is very simple to operate providing instant information via a large color display. It calculates total dryer time, bushels per hour and total bushels dried. Memory features in the unit maintain a history of past dryer operation and a permanent service record.

Drying ConTrolS

eaSy aCCeSSThe GSI Tower Dryer was designed with convenience in mind. Catwalks, ladders and cages are provided on all areas of the dryer for easy accessibility. All areas of the dryer can be easily accessed through up to four entry ways. Cleanout, inspection, and general maintenance are never a problem with the GSI Tower Dryer.

Heavy-duty materials and strong structural design provide a solid support for ladders and platforms.

GSI has a reputation for engineering excellence. The Tower Dryer exemplifies this, with design innovation unmatched by anyone in the industry.

The Tower Dryer design utilizes industry proven drying principles along with many unique features to provide the commercial user with a simple, reliable, fuel efficient grain dryer. Each dryer employs a bolt together (versus welded) design, which permits the wide use of galvanized steel (versus painted steel) throughout the dryer. In addition, all dryers have stainless steel, roll formed exterior sheeting as a standard feature. These design features simplify dryer erection, improve dryer appearance and promote a long dryer life.

The hopper bottom design used on the dryer, including GSI’s patented metering drum, provides a simple, efficient grain discharge system. This system transfers grain from the dryer uniformly and allows for easy dryer clean-out. The touch screen controls offer computerized control of all dryer functions. This “smart” system eliminates guesswork by providing the operator instant information on a large backlit color display and makes the operation of the dryer simple.

CuTTing-eDge TeChnology

Superbly ConSTruCTeDGrain enters the dryer at the top and falls into a self cleaning grain receiving chamber. The chamber creates a grain cushion, and with grain falling on grain, helps reduce plenum roof wear. This chamber also provides a means of distributing grain evenly around the dryer. The garner bin at the top of the dryer has a full 40 inches of wet grain storage. This area is completely sealed to help retain grain dust and particulates.

Grain moves down, out of the garner area, and enters 12” wide grain drying columns in the heat section of the dryer. The GSI Tower Dryer is designed to provide the optimum balance of grain retention time, airflow and temperature. Large column holding capacities result in long grain retention times in the drying section of the dryer. This long retention time, combined with low drying airflows and temperatures result in high quality, efficiently dried grain.

Midway down the heat section of the dryer are GSI’s patented grain inverters. The inverters invert the grain from the inside of the grain column to the outside for more uniformly dried grain.

GSI tower dryers are designed to retain bees wings and particulate matter within the drying columns. The largest standard hole size on the exterior screening of the dryer is 0.078 inch diameter perforation. After the grain is turned, the perforation size drops to a diameter of 0.0625 inches. Solid non-perforated exterior sheets are used at the grain inverters and at the top and bottom of the grain columns to help ensure that particulates are not expelled from the dryer.

As grain exits the heat section of the dryer it enters the suction cooling section. Air used to cool the grain is recycled through the blower(s) resulting in significant energy savings.

The wet grain storage area and self-cleaning grain receiving chamber at the top of the dryer.

The internal temperature sensors.

heat plenum chamBer The heat plenum chamber is entirely surrounded by a 12-3/4" grain column. All heated air must pass through the grain column resulting in total use of heated air. Stainless steel, smooth sidewall construction with .078" and .0625" perforation diameter helps retain particulate matter.

Inside: •Heatingsectionhas.078"perforationsidewalls.•Coolingsectionhas.0625"perforationtominimize

particulate matter entering the cooling section.

Outside:•HeatingsectiontotheGrainInverterhas.078"

perforation sidewalls. •GrainInvertertothecoolingsectionhas.0625"

perforation sidewalls to contain the particulate matter.•Coolingsectionhas.078"perforationsidewalls.

heatingsection

coolingsection

inverters

Blower

Burner

.0625"

.078"

400018' dia. x 96'-11" h.25' dia. w/Catwalks

500024' dia. x 101'-6" h.32' dia. w/Catwalks

600024' dia. x 111'-6" h.32' dia. w/Catwalks

700024' dia. x 121'-6" h.32' dia. w/Catwalks

1000030' dia. 132'-11" h.38' dia. w/Catwalks

471818' dia. x 110'-3" h.25' dia. w/Catwalks

350018' dia. x 86'-11" h.25' dia. w/Catwalks

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GS-010

gs-010 Jan/09Copyright ©2009 by The GSI Group, LLC. | Printed in the USA | Due to continual improvements, The GSI Group, LLC. reserves the right to change designs and specifications without notice.

www.gsiag.com1004 East Illinois Street | Assumption, IL 62510 USA

Ph: 888-GSI-BINS | Int'l Tel: 1-217-226-BINSFax: 800-800-5329 | Int'l Fax: 1-217-226-3404

1200 1500 1800 2000 2400 2500 3000 3500 4000 4718 5000 6000 7000 10000Drying cfm 60,500 77,100 81,800 98,600 108,300 121,950 145,200 175,800 192,750 213,600 282,000 304,800 337,500 500,00cooling cfm 30,250 38,550 40,900 49,300 54,150 60,975 72,600 87,900 96,375 106,800 141,000 152,400 168,750 250,000Blower hp 60 75 75 100 100 3-40 3-50 3-60 3-75 3-75 3-100 3-100 3-125 4-125Burner capacity (mBtu)

13,068 16,654 17,669 21,298 23,393 26,341 31,363 37,973 41,634 46,138 60,192 65,837 72,900 108,000

average heat use (mBtu)

7,514 9,576 10,160 12,246 13,451 15,146 18,034 21,834 23,940 26,529 35,024 37,856 41,918 62,100

grain column 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4” 12-3/4”tower Diameter 12’ 12’ 12’ 12’ 12’ 18’ 18’ 18’ 18’ 18’ 24’ 24’ 24’ 30’overall height 52’-1” 58’-9” 68’-9” 75’-5” 85’-5” 66’-11” 76’-11” 86’-11” 96’-11” 110’-3” 101'-6” 111'-6” 121’-6” 132’-11”heat holDing (Bu) 719 914 1,158 1,256 1,499 1,511 1,813 2,210 2,512 2,964 3,479 4,042 4,452 6,030cool holDing (Bu)

305 305 354 451 500 529 680 737 888 1,038 1,126 1,177 1,381 1,846

total column holDing (Bu)

1,024 1,219 1,512 1,707 1,999 2,040 2,493 2,947 3,400 4,002 4,605 5,219 5,833 7,876

total Dryer holDing (Bu)

1,427 1,622 1,915 2,110 2,401 2,977 3,430 3,883 4,337 4,939 6,294 6,908 7,522 10,531

Bph capacity (20%-15%)

1,200 1,500 1,800 2,000 2,400 2500 3000 3,500 4,000 4,700 5,000 6,000 7,000 10,000

Bph capacity (25%-15%)

720 900 1,080 1,200 1,440 1,500 1,800 2,100 2,400 2,820 3,000 3,600 4,200 6,000

Tower Dryer SpeCiFiCaTionS

120012' dia. x 52'-1" h.

19' dia. w/Catwalks

150012' dia. x 58'-9" h.

19' dia. w/Catwalks

180012' dia. x 68'-9" h.

19' dia. w/Catwalks

200012' dia. x 75'-5" h.

19' dia. w/Catwalks

250018' dia. x 66'-11" h.25' dia. w/Catwalks

300018'w dia. 76'-11" h.25' dia. w/Catwalks

240012' dia. x 85'-5" h.

19' dia. w/Catwalks

1 Dimensions exclude outside catwalk.2 Includes amperage for one 10 HP unload motor.3 Capacities listed are wet bushels/tonnes, shelled corn at listed moisture content and are

estimates based on drying principles, field results and computer simulation. Variance may occur due to grain's physiological factors (kernel size, chemical composition, variety, maturity), excessive fines, adverse weather conditions, etc.

Larger molds are shown on the inside back cover. All dryers are show at relative size.

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