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BA_2005_2_GB_SGA

 

 

Operating Instruction 

Switching 
device  SG-A 

 
 
 
 
 
 
 
 
 
 

 

INDEX 

 Page 
 

  1.  General  .................................................................................  2 

 

  2.  Safety  ..............................................................................  2 – 4 

 

  A  Type  ......................................................................................  4 

 

  B  Switching pressure difference  ...........................................  4 

 

  C  Inspection  .............................................................................  4 

 

  D  Accessories  .........................................................................  4 

 

  3.  Design  ...................................................................................  5 

 

  4.  Principle of operation  ..........................................................  6 

 

  5.  Specification  ........................................................................  6 

 

  6.  Start-up  .................................................................................  7 

 

  7.  Installation  ............................................................................  8 

 

  8.  Maintenance  .........................................................................  9 

 

  9.  Operating troubles and their reasons  ................................  9 

 10. 

Plates 

 ....................................................................................  9 

 

 
 
 
 

Содержание SG-A

Страница 1: ...SG A INDEX Page 1 General 2 2 Safety 2 4 A Type 4 B Switching pressure difference 4 C Inspection 4 D Accessories 4 3 Design 5 4 Principle of operation 6 5 Specification 6 6 Start up 7 7 Installation 8 8 Maintenance 9 9 Operating troubles and their reasons 9 10 Plates 9 ...

Страница 2: ... 2 Safety These operating instructions contain fundamental instructions which are to be observed during erection operation and maintenance Therefore it is absolutely necessary for the fitter and the competent qualified staff user to read these operating instructions before installation and start up The operating instructions must be available at all times at the place of use of the machine system ...

Страница 3: ...st touch Protection against touch for moving parts e g coupling must not be removed when the machine is in operation Leakages e g from the shaft seal of hazardous goods to be delivered e g explosive toxic hot are to be removed in such a way that there is no danger to persons and environment Legal rules are to be ovserved Hazards caused by electrial power are to be excluded for details please refer...

Страница 4: ...e general requirements for lubricants are specified in the respective safety data sheets Used lubricants are hazardous forms of waste and therefore require special supervision in the sense of 41 paragraph 1 sentence 1 and paragraph 3 no 1 of KrW AbfG Closed Loop Waste Management Act Used oils must be handled in compliance with AltölV Waste Oil Ordinance The devices or components contaminated with ...

Страница 5: ...ram enclosed consists of a housing with a metallically sealing piston which is held in its mid position by means of two compression springs Furthermore it consists of a limit switch which is fixed in its position by means of a safety plate on which these parts are fixed ...

Страница 6: ...the pressure build up in main line B the piston is displaced upwards against the springliness of the upper compression spring When the pressure difference between the two main lines is approx 50 bar and or 100 bar the contacts 3 and 4 are closed via the piston at the limit switch and a new reversion process is initiated 5 Specification Switching pressure difference 50 or 100 bar Working pressure m...

Страница 7: ...ws M8 It can be installed in any position desired The electric connection of the differential switch are to be effected by qualified staff only The local electric instructions must be observed ATTENTION Take care that the lubricant lines are clean and free from chips or other impurities Dirt particles are the most frequent reason for failures and damages The switching device must not be pressurize...

Страница 8: ...ns Protect differential switch against unintended actuation and disconnect it electrically by qualified staff Remove differential switch from the machine and or the system Loosen cheese head screws and remove disks with limit switch Loosen plugs and take off seal rings ring compression spring with disks Remove groove ring from plug Pull piston out of the housing Clean parts in naphtha or petroleum...

Страница 9: ... Use Naphtha or petroleum ether only Use clean lubricant only to fill the lubricant pump Avoid all kinds of impurities as dirt particles are the most frequentl reason for failures and damages Different kinds of lubricant must not be mixed 9 Operating troubles and their reasons Early wear of the mobile parts and the sealings is mainly caused by polluted lubricant Failures within the system can abov...

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