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Cemco Model 275
   Specification Sheet
Contents
Cemco Model 275 Technical Specifications .................................................................................................. 1
   Aggregate Handling................................................................................................................................... 1
      2-bin Aggregate Storage ....................................................................................................................... 1
      3-bin Aggregate Storage ....................................................................................................................... 1
      4-bin Aggregate Storage ....................................................................................................................... 1
      Aggregate Gate Control ........................................................................................................................ 1
   Water Handling ......................................................................................................................................... 2
      Water Pump .......................................................................................................................................... 2
      Water Storage and Transfer.................................................................................................................. 2
   Cement Handling ...................................................................................................................................... 2
      Cement Storage and Transfer ............................................................................................................... 2
      Cement Weigh Batch Auger Specifications ........................................................................................... 2
   Scale Capacities and Functionality ............................................................................................................ 3
      NTEP approved scale capacities ............................................................................................................ 3
      Scale Weighing Method ........................................................................................................................ 3
   Transfer Conveyors ................................................................................................................................... 3
      Transfer Conveyor Specifications.......................................................................................................... 3
   Pneumatic System..................................................................................................................................... 3
      Standard Pneumatic Functions ............................................................................................................. 4
   Dust Collection .......................................................................................................................................... 4
      WAM R01 Silo Top Dust Collector......................................................................................................... 4
      WAM Cement Weigh Batcher Dust Collector ....................................................................................... 4
      C & W CP-535-678 Load Point Dust Collector ....................................................................................... 5
   Plant Power ............................................................................................................................................... 5
   Plant Production ....................................................................................................................................... 5
http://www.cemcoinc.com


Cemco Model 275 Technical Specifications

The Cemco Model 275 is completely portable with leveling cylinders on all four corners of unit and a
self-erecting 58 ton silo. The plant is completely self-contained, powered by an on board 140
Horsepower John Deere Diesel Engine.



Aggregate Handling


The Plant can be configured with 2, 3, or 4 aggregate bins. Additional 12 cubic yard automatic feeder
conveyors may be added per aggregate bin.


                                      2-bin Aggregate Storage
              Aggregate Storage Bin                                 Storage (cubic yards)
                      Sand                                                10-15*
                      Rock                                                13-18*

                                      3-bin Aggregate Storage
              Aggregate Storage Bin                                 Storage (cubic yards)
                      Sand                                                10-15*
                     Rock 1                                               13-18*
                     Rock 2                                               13-18*

                                      4-bin Aggregate Storage
              Aggregate Storage Bin                                 Storage (cubic yards)
                       Sand                                               10-15*
                      Rock 1                                              13-18*
                      Rock 2                                              13-18*
                      Rock 3                                              13-18*
*the higher storage ratings are achieved by adding bin extensions

Note: An additional 12 cubic yards can be added per aggregate bin by utilizing the automatic aggregate
feeder conveyors.


                                      Aggregate Gate Control
     Aggregate Storage Bin                   Gate Area (in2)                     Flow Control
               Sand                                336                    Hydraulic inching clam gate*
          Rock 1, 2, or 3                          406                    Hydraulic inching clam gate
*Sand bin also has a computer controlled vibrator in order to foster flow




                                                Page 1
http://www.cemcoinc.com


Water Handling


The Model 275 Cemco Plant includes a hydraulically driven water pump which pushes water into an
overhead water storage bin. The plant is hard wired to keep the storage tank full without operator
interference. From the storage tank, water is gravity fed via a 6 inch, hydraulically actuated butterfly
valve.


                                              Water Pump
                      Brand                                    Rated Maximum Flow
     2 inch hydraulically driven Pacer Pump*                    240 GPM (908 LPM)
*The water pump can be upgraded to a 3 inch 280 GPM (1060 LPM)


                                     Water Storage and Transfer
       Water Storage Bin                         Capacity                         Butterfly Gate size
  Overhead Water Storage Tank            660 Gallons (2500 Liters)                      6 inch
     Water Weigh Batcher                 400 Gallons (1500 Liters)                      6 inch


Cement Handling


The Model 275 batch plant includes a self-erecting 58 ton silo which feeds a cement weigh batcher via a
12 inch butterfly valve. The Cemco cement weigh batcher has a 10 inch flow controlled inching gate as
well as a transfer screw and a vibrator in order to create a constant and controllable flow of cement
based upon the users desired flow rate. In addition, aerators and a vibrator are included on the silo to
increase weigh up speed. In the case of a clump in the cement silo, a guillotine plate and cutout have
been provided so that the silo gate may be removed without cement spillage.


                                 Cement Storage and Transfer
   Cement Silo/Weigh batcher                      Capacity                       Butterfly Gate size
       Silo (self-erecting)                       58 tons                             12 inch
     Cement Weigh Batcher                          4 tons                       10 inch inching gate
*The batch plant comes standard with one 4” fill pipe. Additional fill pipes may be added.


                             Cement Weigh Batch Auger Specifications
           dimension (length x diameter)                                 50” x 10”
               Max Motor Torque                                    8300 lbs·in (938 N·m)
            Auger RPM (variable speed)                       0-320 based upon hydraulic flow
*The auger does not have to be running for cement to flow out of the gate; it simply helps maintain
constant flow.




                                                 Page 2
http://www.cemcoinc.com


Scale Capacities and Functionality


The Model 275 NTEP Certificate No. is 99-029.


                                  NTEP approved scale capacities
          Scale                Nominal Capacity (lbs.) Load Cell Capacity (lbs.)         Grad Size (lbs.)
          Water                        3,500                    5,000                          1
         Cement                        8,000                   15,000                          5
        Aggregate                    40,000                    60,000                          10



                                     Scale Weighing Method
                      Scale                                    Accumulative/Decumulative
                      Water                                           Accumulative
                     Cement                                           Accumulative
                    Aggregate                                        Decumulative*
*If automatic aggregate feeder conveyors are used, then the Aggregate scales can accumulate



Transfer Conveyors


All transfer conveyors are hydraulically driven. As such, they can start under full load and their speeds
are easily adjustable.


                                 Transfer Conveyor Specifications
       Belt Location                  Torque               Belt Speed                      Belt Width
      Plant Conveyor          19560 lbs·in (2210 N·m)     0-400 ft./min                    30 inches*
 Aggregate Feed Conveyor      10475 lbs·in (1184 N·m)     0-400 ft./min                     30 inches
*36 inch plant conveyors are an option



Pneumatic System


The Batch plant has an onboard, hydraulically driven 50 CFM air compressor which supplies air for all
pneumatic functions. All air storage tanks have a manual water drain for periodic maintenance. In
addition, Cemco utilizes a parker filter and automatic water drain just after the air is compressed as well
as a Wilkerson automatic particulate filter with automatic water drain further downstream to capture
additional water droplets once the air has cooled from initial compression.




                                                 Page 3
http://www.cemcoinc.com


Two Wilkerson oilers are used to oil plant vibrators. Each oiler allows the operator to adjust oil flow to
the vibrators.


                                     Standard Pneumatic Functions
                      Function                            Air Consumption if used continuously
            Silo Dust Collector Pulse Jets                          2.65 CFM @ 87 psi
  Cement Weigh Batcher Dust Collector Pulse Jets                      1 CFM @ 87 psi
                      Vibrators                                      7.1 CFM @ 87 psi
            Vibra-Pad Aerators (pulsing)                           10-15 CFM @ 7-15 psi
               Central Dust Collector*                            5-12 CFM @ 90-100 psi
*The 4,000CFM Central Dust Collector is an option and comes silo mounted (does not need separate
trailer and does not affect the portability of the plant)



Dust Collection


Cemco batch plants come standard with a silo top and cement weigh batcher dust collectors. As an
option, a load point dust collector may be purchased.


                                      WAM R01 Silo Top Dust Collector
                     Cartridge Area                                             264 ft.2
               Cartridge Material / weave                              Spun Polyester / 10 micron
                        Efficiency                                           99.8 – 99.9 %
                    Air to Cloth ratio                                            6:1
                   Method of Cleaning                                          Pulse Jet
                   Maximum Capacity                                           1500 ACFM
                     Collection Type                                            Venting
*If 2-3 fill pipes are required, then an additional silo top dust collector must be added. The standard
plant comes with one 4” fill pipe and one silo top dust collector.


                             WAM Cement Weigh Batcher Dust Collector
                  Cartridge Area                                    25 ft.2
            Cartridge Material / weave                    Spun Polyester / 10 micron
                     Efficiency                                  98 – 99.9 %
                 Air to Cloth ratio                                  6:1
               Method of Cleaning                                  Pulse Jet
                Maximum Capacity                                  150 ACFM
                  Collection Type                                  Venting


Cemco’s optional central dust collector is a C & W CP-535-678. The dust collector does not have any
effect on portability as it pulls with the plant and is literally mounted directly to the silo. When the silo




                                                   Page 4
http://www.cemcoinc.com


self erects the dust collector rises along with it. The dust collector is mounted on the bottom portion of
silo in between the plant frame and the conveyor belt.

The Central Dust Collector is hardwired to collect dust whenever a load is discharging. During the next
load’s weigh up, dust from the previous load is deposited into the cement weigh batcher. In this
manner the central dust collector’s filters are cleaned every time a batch is weighed up.


                            C & W CP-535-678 Load Point Dust Collector
                  Cartridge Area                                     535 ft.2
                     Efficiency                                      99.99%
                 Air to Cloth ratio                                  7.48:1
                Method of Cleaning                                  Pulse Jet
                Normal Air Capacity                                4,000 CFM
                  Collection Type                               Blower (Suction)


Plant Power


The Cemco Model 275 utilizes a factory mounted 140 Horsepower John Deere Industrial Diesel engine.
The engine has a 120 amp alternator which sustains the plant’s power system. All functions aside from
the 120 VAC silo high level indicators and dust collector pulse jets operate via 12 VDC. In order to run
the operating system and few 120 VAC functions a dedicated 10 amp 120 VAC circuit is necessary. The
plant comes standard with a factory mounted batch house. If this option is chosen then Cemco provides
a 2000 watt, 12 VDC to 120 VAC power inverter. If the Cemco supplied batch house is not utilized, then
the customer needs to provide a dedicated 10 amp 120 VAC circuit for the aforementioned items. While
the power inverter is rated at 2000 Watts, the plant only generates enough power to sustain itself.
There is not enough power to run lights, tools, or anything aside from the plant.

As an option, Cemco plants may be purchased with a 100HP electric motor in lieu of the 140HP diesel
motor. Also, both power packs may be purchased for the ability to run off electricity or diesel
depending on job constraints. Please consult the factory for additional information.



Plant Production


The Cemco model 275 is rated at 275 cubic yards per hour. This rating is based upon a 2:32 cycle time
with 12 yard mixer trucks. The plant is fully capable of delivering a load as quickly as any truck can take
it, and therefore, plant production is ultimately limited by the maximum truck feed rate and the time it
takes for a loaded truck to leave and the next truck to get in place for a load. When continually
batching, the plant can have the next load ready while trucks are transferring. On the high end of the
production scale, Cemco has customers who routinely dry batch at 220+ cubic yards per hour.



                                                 Page 5

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Cemco Concrete Plant Brochure

  • 1. Cemco Model 275 Specification Sheet
  • 2. Contents Cemco Model 275 Technical Specifications .................................................................................................. 1 Aggregate Handling................................................................................................................................... 1 2-bin Aggregate Storage ....................................................................................................................... 1 3-bin Aggregate Storage ....................................................................................................................... 1 4-bin Aggregate Storage ....................................................................................................................... 1 Aggregate Gate Control ........................................................................................................................ 1 Water Handling ......................................................................................................................................... 2 Water Pump .......................................................................................................................................... 2 Water Storage and Transfer.................................................................................................................. 2 Cement Handling ...................................................................................................................................... 2 Cement Storage and Transfer ............................................................................................................... 2 Cement Weigh Batch Auger Specifications ........................................................................................... 2 Scale Capacities and Functionality ............................................................................................................ 3 NTEP approved scale capacities ............................................................................................................ 3 Scale Weighing Method ........................................................................................................................ 3 Transfer Conveyors ................................................................................................................................... 3 Transfer Conveyor Specifications.......................................................................................................... 3 Pneumatic System..................................................................................................................................... 3 Standard Pneumatic Functions ............................................................................................................. 4 Dust Collection .......................................................................................................................................... 4 WAM R01 Silo Top Dust Collector......................................................................................................... 4 WAM Cement Weigh Batcher Dust Collector ....................................................................................... 4 C & W CP-535-678 Load Point Dust Collector ....................................................................................... 5 Plant Power ............................................................................................................................................... 5 Plant Production ....................................................................................................................................... 5
  • 3. http://www.cemcoinc.com Cemco Model 275 Technical Specifications The Cemco Model 275 is completely portable with leveling cylinders on all four corners of unit and a self-erecting 58 ton silo. The plant is completely self-contained, powered by an on board 140 Horsepower John Deere Diesel Engine. Aggregate Handling The Plant can be configured with 2, 3, or 4 aggregate bins. Additional 12 cubic yard automatic feeder conveyors may be added per aggregate bin. 2-bin Aggregate Storage Aggregate Storage Bin Storage (cubic yards) Sand 10-15* Rock 13-18* 3-bin Aggregate Storage Aggregate Storage Bin Storage (cubic yards) Sand 10-15* Rock 1 13-18* Rock 2 13-18* 4-bin Aggregate Storage Aggregate Storage Bin Storage (cubic yards) Sand 10-15* Rock 1 13-18* Rock 2 13-18* Rock 3 13-18* *the higher storage ratings are achieved by adding bin extensions Note: An additional 12 cubic yards can be added per aggregate bin by utilizing the automatic aggregate feeder conveyors. Aggregate Gate Control Aggregate Storage Bin Gate Area (in2) Flow Control Sand 336 Hydraulic inching clam gate* Rock 1, 2, or 3 406 Hydraulic inching clam gate *Sand bin also has a computer controlled vibrator in order to foster flow Page 1
  • 4. http://www.cemcoinc.com Water Handling The Model 275 Cemco Plant includes a hydraulically driven water pump which pushes water into an overhead water storage bin. The plant is hard wired to keep the storage tank full without operator interference. From the storage tank, water is gravity fed via a 6 inch, hydraulically actuated butterfly valve. Water Pump Brand Rated Maximum Flow 2 inch hydraulically driven Pacer Pump* 240 GPM (908 LPM) *The water pump can be upgraded to a 3 inch 280 GPM (1060 LPM) Water Storage and Transfer Water Storage Bin Capacity Butterfly Gate size Overhead Water Storage Tank 660 Gallons (2500 Liters) 6 inch Water Weigh Batcher 400 Gallons (1500 Liters) 6 inch Cement Handling The Model 275 batch plant includes a self-erecting 58 ton silo which feeds a cement weigh batcher via a 12 inch butterfly valve. The Cemco cement weigh batcher has a 10 inch flow controlled inching gate as well as a transfer screw and a vibrator in order to create a constant and controllable flow of cement based upon the users desired flow rate. In addition, aerators and a vibrator are included on the silo to increase weigh up speed. In the case of a clump in the cement silo, a guillotine plate and cutout have been provided so that the silo gate may be removed without cement spillage. Cement Storage and Transfer Cement Silo/Weigh batcher Capacity Butterfly Gate size Silo (self-erecting) 58 tons 12 inch Cement Weigh Batcher 4 tons 10 inch inching gate *The batch plant comes standard with one 4” fill pipe. Additional fill pipes may be added. Cement Weigh Batch Auger Specifications dimension (length x diameter) 50” x 10” Max Motor Torque 8300 lbs·in (938 N·m) Auger RPM (variable speed) 0-320 based upon hydraulic flow *The auger does not have to be running for cement to flow out of the gate; it simply helps maintain constant flow. Page 2
  • 5. http://www.cemcoinc.com Scale Capacities and Functionality The Model 275 NTEP Certificate No. is 99-029. NTEP approved scale capacities Scale Nominal Capacity (lbs.) Load Cell Capacity (lbs.) Grad Size (lbs.) Water 3,500 5,000 1 Cement 8,000 15,000 5 Aggregate 40,000 60,000 10 Scale Weighing Method Scale Accumulative/Decumulative Water Accumulative Cement Accumulative Aggregate Decumulative* *If automatic aggregate feeder conveyors are used, then the Aggregate scales can accumulate Transfer Conveyors All transfer conveyors are hydraulically driven. As such, they can start under full load and their speeds are easily adjustable. Transfer Conveyor Specifications Belt Location Torque Belt Speed Belt Width Plant Conveyor 19560 lbs·in (2210 N·m) 0-400 ft./min 30 inches* Aggregate Feed Conveyor 10475 lbs·in (1184 N·m) 0-400 ft./min 30 inches *36 inch plant conveyors are an option Pneumatic System The Batch plant has an onboard, hydraulically driven 50 CFM air compressor which supplies air for all pneumatic functions. All air storage tanks have a manual water drain for periodic maintenance. In addition, Cemco utilizes a parker filter and automatic water drain just after the air is compressed as well as a Wilkerson automatic particulate filter with automatic water drain further downstream to capture additional water droplets once the air has cooled from initial compression. Page 3
  • 6. http://www.cemcoinc.com Two Wilkerson oilers are used to oil plant vibrators. Each oiler allows the operator to adjust oil flow to the vibrators. Standard Pneumatic Functions Function Air Consumption if used continuously Silo Dust Collector Pulse Jets 2.65 CFM @ 87 psi Cement Weigh Batcher Dust Collector Pulse Jets 1 CFM @ 87 psi Vibrators 7.1 CFM @ 87 psi Vibra-Pad Aerators (pulsing) 10-15 CFM @ 7-15 psi Central Dust Collector* 5-12 CFM @ 90-100 psi *The 4,000CFM Central Dust Collector is an option and comes silo mounted (does not need separate trailer and does not affect the portability of the plant) Dust Collection Cemco batch plants come standard with a silo top and cement weigh batcher dust collectors. As an option, a load point dust collector may be purchased. WAM R01 Silo Top Dust Collector Cartridge Area 264 ft.2 Cartridge Material / weave Spun Polyester / 10 micron Efficiency 99.8 – 99.9 % Air to Cloth ratio 6:1 Method of Cleaning Pulse Jet Maximum Capacity 1500 ACFM Collection Type Venting *If 2-3 fill pipes are required, then an additional silo top dust collector must be added. The standard plant comes with one 4” fill pipe and one silo top dust collector. WAM Cement Weigh Batcher Dust Collector Cartridge Area 25 ft.2 Cartridge Material / weave Spun Polyester / 10 micron Efficiency 98 – 99.9 % Air to Cloth ratio 6:1 Method of Cleaning Pulse Jet Maximum Capacity 150 ACFM Collection Type Venting Cemco’s optional central dust collector is a C & W CP-535-678. The dust collector does not have any effect on portability as it pulls with the plant and is literally mounted directly to the silo. When the silo Page 4
  • 7. http://www.cemcoinc.com self erects the dust collector rises along with it. The dust collector is mounted on the bottom portion of silo in between the plant frame and the conveyor belt. The Central Dust Collector is hardwired to collect dust whenever a load is discharging. During the next load’s weigh up, dust from the previous load is deposited into the cement weigh batcher. In this manner the central dust collector’s filters are cleaned every time a batch is weighed up. C & W CP-535-678 Load Point Dust Collector Cartridge Area 535 ft.2 Efficiency 99.99% Air to Cloth ratio 7.48:1 Method of Cleaning Pulse Jet Normal Air Capacity 4,000 CFM Collection Type Blower (Suction) Plant Power The Cemco Model 275 utilizes a factory mounted 140 Horsepower John Deere Industrial Diesel engine. The engine has a 120 amp alternator which sustains the plant’s power system. All functions aside from the 120 VAC silo high level indicators and dust collector pulse jets operate via 12 VDC. In order to run the operating system and few 120 VAC functions a dedicated 10 amp 120 VAC circuit is necessary. The plant comes standard with a factory mounted batch house. If this option is chosen then Cemco provides a 2000 watt, 12 VDC to 120 VAC power inverter. If the Cemco supplied batch house is not utilized, then the customer needs to provide a dedicated 10 amp 120 VAC circuit for the aforementioned items. While the power inverter is rated at 2000 Watts, the plant only generates enough power to sustain itself. There is not enough power to run lights, tools, or anything aside from the plant. As an option, Cemco plants may be purchased with a 100HP electric motor in lieu of the 140HP diesel motor. Also, both power packs may be purchased for the ability to run off electricity or diesel depending on job constraints. Please consult the factory for additional information. Plant Production The Cemco model 275 is rated at 275 cubic yards per hour. This rating is based upon a 2:32 cycle time with 12 yard mixer trucks. The plant is fully capable of delivering a load as quickly as any truck can take it, and therefore, plant production is ultimately limited by the maximum truck feed rate and the time it takes for a loaded truck to leave and the next truck to get in place for a load. When continually batching, the plant can have the next load ready while trucks are transferring. On the high end of the production scale, Cemco has customers who routinely dry batch at 220+ cubic yards per hour. Page 5