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 Vacuum units 
 Vacuum units 
 Operating vacuum required can be produced in many ways. 
 Witte vacuum units feature the following: 
 •  Oil lubricated vacuum pumps with an end  
    vacuum rate of 20mbar absolute at full suction  
    capability of i.e. 10m3 upto 250m3 per hour 
 •  Integrated pressure difference switch, which 
    automatically switches the vacuum pump on 
    or off thereby ensuring vacuum during machi- 
    ning but avoiding unnecessary idle running 
 •  Protection switch which protects electric  
    motor from overheating 
 •  Air filter which protects pump from dirt  
    (made of acrylic glass with exchangeable  
    air filter cartridge) 
 •  Careful assembly of compatible components  
    guarantee trouble-free and almost 
    maintenance-free operation of Witte  
    vacuum units in many applications 
 Witte vacuum unit with U tank 
 230/400 V working voltage 
 Nr. m3/h Volt Hz End press. Kw RPM DB Oil A B C 
 81010 10 230 50 20 mbar 0,37 1350 1⁄min 59 0,3l 555 315 327 45 
 81011 10 400 50 20 mbar 0,37 1350 1⁄min 59 0,3l 555  315  327 45 
 85323 16 230 50 20 mbar 0,55 2650 1⁄min 60 0,3l 555  315  327 42 
 85324 16 400 50 20 mbar 0,55 2650 1⁄min 64 0,3l 555  315  327 42 
 80165 20 230 50 20 mbar 0,75 2720 1⁄min 62 0,5l 555  315  327 47 
 80000 20 400 50 20 mbar 0,75 2720 1⁄min 62 0,5l 555  315  327 47 
 80001 63 400 50 20 mbar 2,0 1500 1⁄min 65 2l 800  500  500 105 
 A 
 •  Drainage screw for coolants which have  
    been sucked in 
 •  3m connecting cable with CEE  
    or Schuko plug 
 85323  
 Vacuum unit 16m3/h 
 C 
 B 
 i i 
 Supply includes 
  1 pce connection unit comprising: 
  3m vacuum hose 
  3/2 way aerated valve 
  1 vacuummeter 
 All vacuum pumps can be used with 60 Hz