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Automatic Backflush Filter F450 

 

 

 

 

 

State:

 

05.02.2016 

– 1.3 

Georg Schünemann GmbH, Bremen 

2-2

 

 

2.2.1 

Description of the operational functions 

The  operation  of  the  automatic  backflush  filter  F450  is  divided  into  the  normal 
operation and the flushing phases: 
 

 

Normal operation 

 
The filter is in the normal filtration phase. The 
flushing  valve  is  closed  and  the  piston 
mounted  in  the  cover  is  in  its  initial  position 
with the flushing disc outside of the filter bas-
ket.  The  particles  are  deposited  in  the  filter 
insert in accordance with the laws of fluid me-
chanics,  starting  at  the  top  and  continuing 
towards  the  bottom.  The  running  time  of  this 
filtration phase is dependent upon the level of 
contamination of the medium. 
 
Because  of  the  design  and  the  fluidic  condi-
tions no particles are deposited in the bottom 
area of the strainer in this phase. 

 

 

 

 

 

Filtration and first flushing phase 

 
In  this  flushing  phase  the  flushing  valve 
opens and generates a pressure drop relative 
to  the  system  pressure  prevailing  in  the  pipe 
work system. By means of this pressure drop 
the coarser and easily cleanable particles are 
flushed out of the strainer insert. The filtration 
continues  throughout  this  process,  while  the 
flushing flow rate is defined and limited by an 
orifice  that  is  located  in  the  flushing  outlet 
pipe. 
 
The  flushing  process  is  triggered  either  by 
monitoring of the differential pressure, or by a 
time-based  control  algorithm  resp.  it  will  be 
activated by external or by interface. 

Summary of Contents for F450

Page 1: ...Operation manual Automatic Backflush Filter F450 Translation of the original instructions...

Page 2: ...01 Bremen Telefon 49 0421 5 59 09 0 Telefax 49 0421 5 59 09 40 E Mail info sab bremen de The manual is published in according to the specification of the Machine Directive 2006 42 EC The p pa ag ge es...

Page 3: ...description 2 1 2 2 Technical description 2 1 2 2 1 Description of the operational functions 2 2 2 2 2 Control of the automatic backflush filter F450 2 4 3 General data 3 1 3 1 Signs and name plates 3...

Page 4: ...nd disposal 8 1 8 1 Disassembly 8 1 8 2 Disposal 8 1 8 2 1 General regulations for disposal 8 1 9 Illustrations 9 1 Appendix Acceptance report Declaration of conformity Drawings Parts lists Documentat...

Page 5: ...5 Air and water connections 9 5 0 4 List of tables Table 4 1 Alignment of the operating parameter 4 9 0 5 List of abbreviations AC Alternating Current DC Direct Current DDS DDT Differential pressure s...

Page 6: ...filter insert must be cleaned before a renewed start up if necessary Any other use or any use going beyond the rules e g at higher operating tem peratures or operating pressures will be regarded as an...

Page 7: ...onally at the filter e g while setting it up or maintaining it At least some time or other the staff should be controlled if they were in fact working in a safety relevant manner being fully aware of...

Page 8: ...setup maintenance and repair work has to be stipu lated clearly Any personnel to be trained at semi skilled at or familiarized with this work or working within the scope of a general training only ha...

Page 9: ...ance servicing and troubleshooting Nonobservance of the personnel requirements Unauthorized modifications of the automatic backflush filter F450 Inadequately monitoring of components which are subject...

Page 10: ...on of already valid national rules for accident prevention and laws Existing rules for accident prevention and laws must be kept in each case 1 1 Symbols The following symbols are used in this manual...

Page 11: ...or assembly Explanation If incorrect or not expressly described parts at the filter are installed and or changed the func tion of the filter can be set out of strength or disturbed substantially Poss...

Page 12: ...another system as being planned than the function of the filter can be set out of strength or disturbed Install the automatic backflush filter F450 exclusively into systems for those the filter is des...

Page 13: ...own Do not grip between the connection flanges during transport assembly in the pipes and disassembly Hazardous voltage Explanation Hazardous voltages of more than 48 V are pre sent in the control uni...

Page 14: ...staffs carry the responsibility for their own security and the security of third in the work area This responsibility cannot be delegated Any malfunction possibly impairing the safety must be cleared...

Page 15: ...he automatic backflush filter F450 regularly Repair slack connections as well as damaged cables immediately Never separate connectors or plug together under load Burn hazard Protect connections perman...

Page 16: ...ntenance and repair work the automatic backflush filter F450 is to be set out of operation Proceed as described in Chapter 1 3 4 Electrical system Chapter 1 3 5 Compressed air system Chapter 1 3 6 Saf...

Page 17: ...inated immediately The work may be carried out only by trained and instructed personnel The Georg Sch nemann GmbH is to be informed if serious malfunction occur which are not to be repaired with own s...

Page 18: ...ential adjusted on the pressure differential pressure switch or after a pre set interval of time The flushing valve opens and a greater amounts of soiling flushes out with the continuously flowing med...

Page 19: ...filtration phase is dependent upon the level of contamination of the medium Because of the design and the fluidic condi tions no particles are deposited in the bottom area of the strainer in this phas...

Page 20: ...f the filter higher than in the region between the flush ing disc and the filter insert This generates a suction of the dirt particles from the filter element By means of the flushing valve that is op...

Page 21: ...f the electronic control box or remote controlled and telemonitored by a host over the serial inter face The programmable control unit supervises at defined measuring points the pres sure within the e...

Page 22: ...mann GmbH Bremen 3 1 3 General data 3 1 Signs and name plates The automatic backflush filter F450 is equipped with signs and a name plate Always consider the hints instructions and operating values ap...

Page 23: ...evel of the automatic backflush filter F450 is lower than 80 dB A The measurement was taken acc Machine Directive 2006 42 EC 1 7 4 2 u In operation the generation of noise depends on the process condi...

Page 24: ...the pipes Requirements of the filter configuration To ensure the perfect cleaning and function of the filter the following require ments must be met The different operating parameters such as filter...

Page 25: ...tect the automatic backflush filter F450 during transport assembly and disassembly against slipping and falling down Only use suitable technical proper lifting tools with sufficient load capacity Wear...

Page 26: ...ections From ND 500 the filter should be mounted horizontally only in consultation with the producer The filter should either be supported with a pipe support directly mounted on the fil ter or by sup...

Page 27: ...d air station with an air connection of at least 10 1 mm The air pressure has to be about 87 psi 6 kg cm2 g and a maximum of 116 psi 8 kg cm2 g special 50 7 psi 3 5 kg cm2 g 6 If the pneumatic control...

Page 28: ...differential pressure hoses pipes Fig 9 1 resp Fig 9 3 9 must be attached to the intended pressure measuring points Fig 9 1 resp Fig 9 3 7a 7b in the lower region of the filter inlet as well as to the...

Page 29: ...which is used for a full piston stroke Function check of the differential pressure switch Check the function of the differential pressure switch by opening the connection at the filter housing connect...

Page 30: ...ylinder to operating conditions second flushing phase filtration The current time must be adjusted absolutely at initial start up locally under re alistic operating conditions This cannot be done in t...

Page 31: ...rval triggered by timing to approx 50 of this time is recommended e g triggering by differen tial pressure all 6 hours adjust interval for time steered filtration to 3 hours Thus a strong allocation o...

Page 32: ...size DN 50 65 80 100 150 200 250 300 350 400 500 600 T1 flushing interval 1 hr can be optimized T2 pre flushing 4s 4s 4s 6s 6s 10s Opening closing time for the flushing valve 3s 3s 3s 4s 4s 6s Time f...

Page 33: ...s in some sub items different operating possibilities In delivery status all parameters are adjusted to base values so direct operating is possible with the control The important parameters for the op...

Page 34: ...owing are also illustrated in chap ter 9 Illustrations 6 1 Cleaning of strainer insert Close the throttle at LS1 see Fig 9 1 resp Fig 9 3 3a and note the num ber of turns Later at recommissioning the...

Page 35: ...ed for damage 6 4 Seals The cover seal is accessible if the filter is open and may be inspected of damages and replaced if necessary The seals for the piston rod lead through are accessible when the p...

Page 36: ...ystem in accordance with the manual Do not confound T3 with the running time of the cylinder T3 is the time in which the cylinder has to reach his end position If the pneu matic piston does not reach...

Page 37: ...inder they don t act Compressed air hoses at the cylinder are trans posed Check compressed air hoses for correct connection Solenoid valves defec tive Check function of the solenoid valves SV1 SV2 se...

Page 38: ...1 resp Fig 9 3 7b If no flushing procedure is activated the differen tial pressure switch is possibly de fective Optional Differential pressure transmitter defective Check function of the differential...

Page 39: ...islaid The back flushing line Fig 9 1 resp Fig 9 3 4 should be laid pressure free Each pressure loss is to be considered during the de sign of the orifice Fig 9 1 resp Fig 9 3 5 because the back press...

Page 40: ...resp Fig 9 3 6 Check compressed air supply Proximity switch defec tive wrongly wired Check function of end position switch Compressed air hoses exchanged Check the compressed air hoses for right conne...

Page 41: ...ely against slipping at the flanges and prestress lightly with a suitable and technical proper lifting tool Loose the flange connections Lift the filter carefully and pull it out of the piping under o...

Page 42: ...oses Pipes Flushing Disc Pressure Gauge Back Flushing Line Vent Screws Differential Pressure Switch Compressed Air Supply Pressure Measuring Point filtered Side Pressure Measuring Point unfiltered Sid...

Page 43: ...Keys ARROW UP and ARROW DOWN Switch into Parameter Mode Enter PIN 0000 3 sec hold Tasten PFEIL RAUF Compressed Air Connection Drive Flushing Disc downward Compressed Air Connection Drive Flushing Dis...

Page 44: ...ipes 3a 3c 3d 3b 2 7a 7b 8c 9 4 Back Flushing Line Throttle downward Motion 5 1 Filter Body Control Time Measuring Point LED to Control Control Time Measuring Point LED Throttle upward Motion Flushing...

Page 45: ...RROW UP and ARROW DOWN Switch into Parameter Mode Enter PIN 0000 3 sec hold Tasten PFEIL RAUF Compressed Air Connection Drive Flushing Disk downward Compressed Air Connection Drive Flushing Disk upwar...

Page 46: ...and water connections OPTIONAL SINGLE ACTING ACUATOR SV2 SV1 COMPRESSED AIR HOSES PIPES COMPRESSED AIR HOSES PIPES AIR OUT AIR IN AIR OUT MOUNT AERATION NIPPLES POINTING UPWARDS DIFFERENTIAL PRESSURE...

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