Buhler DFTA 12 Operating Instructions Manual Download Page 1

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Bühler AG
CH-9240 Uzwil, Switzerland
Phone +41 71 955 11 11
Fax +41 71 955 33 79
www.buhlergroup.com

Operating instructions

DFTA-66620-2-en-1803

Throw sifter

DFTA 12, DFTA 13, DFTA 23

Summary of Contents for DFTA 12

Page 1: ...B hler AG CH 9240 Uzwil Switzerland Phone 41 71 955 11 11 Fax 41 71 955 33 79 www buhlergroup com Operating instructions DFTA 66620 2 en 1803 Throw sifter DFTA 12 DFTA 13 DFTA 23...

Page 2: ...torage Equipment that is not installed immediately must be stored protected from weather and other influences Installation The assembly and installation of the machine and machine equipment must only...

Page 3: ...Design 10 2 2 1 DFTA 12 model 10 2 2 2 DFTA 13 DFTA 23 models 11 2 3 Function 12 2 4 Technical data 13 2 4 1 Ambient conditions 13 2 4 2 Connected load 13 2 4 3 Aspiration 13 2 4 4 Weights 13 2 4 5 De...

Page 4: ...inlet 28 6 1 1 Product distribution over entire width 28 6 1 2 Adjusting the gates 28 6 1 3 Distribution over one and two sieve decks for DFTA 13 and DFTA 23 28 6 2 Throw sifters 29 6 2 1 Changing si...

Page 5: ...ices The system must be brought to a standstill before any maintenance work may be carried out on the machine Make sure that all energy sources such as Electricity Air are switched off and disconnecte...

Page 6: ...machine may be connected on the process side to an Ex zone 21 and installed used in an Ex zone 22 II 3 3D EEx c T 135 C x Example Identifier for operating instructions Maximum surface temperature to...

Page 7: ...ation plate and in the control cabinet The electrical wiring to the control system must be connected according to the wiring diagram to ensure that the phase conductors are really switched in the case...

Page 9: ...ording to the specific machine 2 1 2 Specification key 2 1 3 Design variants Note Do not remove or cover up the identification plate Fig 2 1 II EEx T C 2 3 4 1 1 Place of manufacture 2 Type 3 Machine...

Page 10: ...eve decks The clamping levers immediately release the slide in sieve frames when unclamped which allows quick sieve changes The sieve frame is supported on four hollow rub ber springs This prevents vi...

Page 11: ...blind bottom between them double flow system The clamping levers immediately release the slide in sieve frames when unclamped which allows quick sieve changes The sieve frame is supported on four hol...

Page 12: ...width of the machine Oscillation of the entire sieve box is achieved by means of vibrator motors The sieve vibrations move the product over the sieves and keep the sieves clean This operating princip...

Page 13: ...m3 min DFTA 23 2 4 4 Weights 2 4 5 Determining the mesh widths Choosing the correct sieve mesh width is critical for performance and sifting quality Choose the mesh widths for the sieve deck according...

Page 17: ...place by four transport stabilisation devices 1 and 2 that are attached to the sides These devices are marked with yellow paint and must be removed before commissioning the machine Danger Never walk b...

Page 18: ...two ropes on the inlet side and one rope on the outlet side 3 1 2 DFTA 13 DFTA 23 Lift at the specified suspension points only 3 2 Transport weights and volumes See also Chap 2 4 4 13 Fig 3 2 Fig 3 3...

Page 19: ...are provided on the support plates of the machine frame The machine must be exactly level hor izontally 4 3 Product inlet Product must be fed to the inlet directly into the middle of the machine so t...

Page 20: ...on must be carried out in accordance with local and national regulations 4 5 1 Vibrator motors To protect the vibrator motor it is absolutely necessary to install a protective motor switch or a contac...

Page 21: ...A 66620 2 en 1803 4 5 2 Electrical diagram Fig 4 3 Ph Control voltage th1 Thermal relay th2 Thermal relay c1 Contactor for vibrator motor c2 Contactor for vibrator motor R Relay A Control fuse E Limit...

Page 22: ...Installation Throw sifter DFTA 66620 2 en 1803 Copyright 2018 B hler AG 4 6 Earthing Fig 4 4 4 3 2 1 5 1 Frame 2 Sieve box 3 Earthing cable 4 Earth connection equipotential bonding 5 Identification pl...

Page 23: ...the frame 5 2 Verifying EC conformity Within the territory of the EU operation of the machine may begin only after its EC conformity has been checked and confirmed in accordance with the checklist Che...

Page 24: ...gal weights 1 and 2 are positioned so that their contours are aligned exactly one above the other The two centrifugal weights are adjusted at the factory so that the sieve box of the machine oscillate...

Page 25: ...B hler AG DFTA 66620 2 en 1803 5 3 2 Adjusting the stroke for DFTA 12 13 23 Fig 5 2 Type X 50 Hz 60 Hz DFTA 12 76 mm 50 mm DFTA 13 135 mm 85 mm DFTA 23 90 mm 55 mm 2 1 1 1 2 2 3 4 X 1 Centrifugal wei...

Page 27: ...machine can be put in operation with product Procedure 1 Switch on the aspiration system 2 Start the vibrator motors 3 Switch on product feed When switching the machine off the feed must be switched o...

Page 28: ...st the gates 1 and 2 slightly loosen screw 7 only Use the lever 8 to adjust the gate 6 1 3 Distribution over one and two sieve decks for DFTA 13 and DFTA 23 A uniform distribution over the first and s...

Page 29: ...chine at a standstill The lockable safety switch which interrupts the power at all poles must be set to 0 and locked Caution Operating the machine with just loosely inserted sieves that are not clampe...

Page 30: ...upwards This causes the clamping bars to release the sieves on both sides and over the entire frame length 2 Pull out the sieves 2 Use the hook 3 to pull out the rear sieves Note To install sieves fol...

Page 31: ...ox 3 Limit switch Fault Cause Remedy Machine does not start Vibrator motor is not supplied with current Verify power supply The safety switch is set to OFF Set the safety switch to ON Vibrator motor o...

Page 33: ...e product and requirements Danger Never perform any maintenance cleaning or overhaul work unless the machine is at a complete standstill all machine movements have been stopped The lockable safety swi...

Page 34: ...e to worn sieves the sieve clothing can be removed and replaced Fig 7 1 1 2 3 4 5 6 7 8 9 10 13 12 11 13 13 A A A B B C C C C B B A 1 Sieve frame 2 Sieve clothing wire cloth 3 Clamping angle front 4 C...

Page 35: ...2 it is required to open the sieve mesh with a punch 6 After the clamping angles 3 4 and 5 have been installed the wire sieve can be tightened using the tension screws 7 The tension screws 7 must then...

Page 36: ...10 11 2 8 13 14 1 3 8 1 2 8 1 6 7 9 12 6 7 6 7 Sieve loose Sieve clamped 1 Sieve frame 2 Clamping bar 3 Centre clamping bar 4 Straight pin 5 Upper eccentric bushing 6 Lower eccentric bushing 7 Spacer...

Page 37: ...nto the bottom sieve deck 2 Set the clamping lever to the clamped position 3 Slightly loosen the hexagon bolt 12 4 Rotate the 4 eccentric bushings 6 for the bottom sieve until the sieve is sufficientl...

Page 39: ...hine may be disassembled only in observance of all accident preven tion measures and only by trained personnel These personnel must be familiar with all relevant safety precautions 8 2 Disposal Dispos...

Page 41: ...ordering spare parts please refer to the spare parts catalog 9 2 Contact B hler AG Customer Service Milling Solutions CH 9240 Uzwil Switzerland Phone 41 71 955 30 40 Fax 41 71 955 33 05 3040 buhlergro...

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