background image

Diaphragm Vacuum Pumps N 012, N 024, N 036 

Servicing 

Translation of original Operating and Installation Instructions, english, KNF 121222-121485 08/11 

13 

5. Servicing 

Before working on the pump, isolate the power supply se-
curely, then check that the lines are not live. 

 

VORSICHT

Danger of burning yourself when using hot media 

  Let the pump head cool down before working on 

the pump

.

 

 

Diaphragm and valve plates are the only parts of the pump subject 
to wear. They are simple to change. 

Always change diaphragm, valve plates and sealing rings at the 
same time. If diaphragm and valve plates are not changed at the 
same time the nominal performance of the pump is not guaranteed 
after the service. 

 

WARNUNG

Health hazard due to dangerous substances in the 
pump 

Depending on the substances transferred, caustic 
burns or poisoning are possible. 

  Wear protective clothing if necessary, e.g. 

protective gloves. 

  Clean pump with suitable measures. 

 

After opening the pump head, or replacing the diaphragm and 
valve plates the high gas-tightness is no longer guaranteed. A leak 
test is able to verify that the original standard of gas-tightness has 
been achieved. 

 

Spare part* 

 

Quantity  

Valve plates 

2 (per pump head) 

Wave diaphragm 

1 (per pump head) 

O-Rings 

2 (per pump head) 

 

Tab. 1: Spare parts 

* According to Spare parts list, chapter 8 

Spare part 

Содержание N 012 AT. 16 E

Страница 1: ...nd Installation Instructions before using the pumps and observe at all times the relevant instructions to avoid dangerous situations The manual was produced for the serial pumps stated above With cust...

Страница 2: ...uter and operate it using userpredefined cycles The operating data are saved on the PC and can be printed out as a graphic 1 1 Electrical Equipment See the type plate for full electrical data of the m...

Страница 3: ...222 121485 08 11 3 1 3 Ambient Conditions When the pump is operating the following ambient conditions must be maintained Ambient temperature during operation between 10 C 40 C The pump must not be use...

Страница 4: ...ng handled must be observed When using hot media the pneumatic pump suction and pressure lines heat up as do the pump head and the head insulation Do not touch these parts they could burn you Use only...

Страница 5: ...mp connected when the power supply is disconnected Compare the supply data with the data on the motor plate The voltage must not vary by more than 10 and 10 from that shown on the type plate In the el...

Страница 6: ...in position and screw it tight make sure the housing sealing is properly sited 6 Only 26 versions pumps with heated heads electronically controlled Connect the serial interface cable to an avail able...

Страница 7: ...l connection 26 designs with electronically controlled head heating Remove the protection plugs from the port threads Connect the suction and pressure lines For size of the port threads see section 9...

Страница 8: ...pressure of the pump The maximum permissible operating pressure of the pump is stated in the technical specifications section 9 If necessary consider any external sources of energy such as radiation t...

Страница 9: ...ed If the air or gas quantity in the pressure line is throttled or regulated make sure that the maxi mum permissible operating pressure is not ex ceeded Ensure that the pump outlet is not closed or co...

Страница 10: ...play The pump is switched on and off with the ON OFF key N 012 N 024 N 036 Operating mode 1 is selected at the factory Changing the operat ing mode will cause error messages N 036 0 Operating mode 4 i...

Страница 11: ...re during pump operation the SET TEMP key is pressed The Actual Temp LED display is not visible while the set point temperature is displayed The display switches back to the actual temperature 3 secon...

Страница 12: ...lue Alternative 10 seconds after the last value input the current value will be adopted as the setpoint temperature 4 N 036 0 in operating mode 4 Repeat the hysteresis process for head 2 To do this pr...

Страница 13: ...iaphragm and valve plates are not changed at the same time the nominal performance of the pump is not guaranteed after the service WARNUNG Health hazard due to dangerous substances in the pump Dependi...

Страница 14: ...nuts pin diameter 4 mm available as wrench for retainer plate a KNFaccessory see section 10 Screwdriver for slotted screw only for 11 versions Felt tip pen Sharp knife Tab 2 Tools and material Change...

Страница 15: ...ructions english KNF 121222 121485 08 11 15 1 Carrier 2 Wave diaphragm 3 Intermediate plate 4 Head plate 5 Disk spring 6 Cap nut 7 Retainer plate 8 Diaphragm support 9 Con rod extension 10 O ring 11 V...

Страница 16: ...a later stage 2 Release the cap nuts 6 and remove them together with the disk springs 5 The disk springs are fitted in order to maintain the tension of the wave diaphragm right across the temperature...

Страница 17: ...is determined by the shape of the valve seats 4 Fit the new O rings 10 in the intermediate plate 3 e Refitting pump head 1 Place the head plate 4 on the intermediate plate 3 in the position indicated...

Страница 18: ...or a filter blocked Liquid condensate has collected in the pump head Let the pump run for a few minutes pumping air if necessary for safety reasons pumping an inert gas Install the pump at the highes...

Страница 19: ...is refers to head 1 Pump and heating inset s are switched off Displays E02 N 012 N 024 N 036 A two head pump operating mode has been selected by mistake N 036 0 The temperature measured at the heating...

Страница 20: ...umps N 012 N 024 N 036 20 Translation of original Operating and Installation Instructions english KNF 121222 121485 08 11 together with the pump A sample statement for copying can be found in section...

Страница 21: ...d accessories Spare parts N 012 _T __ E Spare part Order No Valve plate 049733 Wave diaphragm 049734 O ring 055675 Disk spring 056019 Tab 3 N 024 _T __ E Spare part Order No Valve plate 049733 Wave di...

Страница 22: ...24 1 5 200 18 N 036 1 5 200 30 Tab 6 Pneumatic Data Liters in standard state 1 013 mbar Two headed pumps Flowrate per pump head Material Pump type Pump head Wave diaphragm Valve N 0xx 0 ST xx E Stainl...

Страница 23: ...ial No and the transferred media in the form below and sent the signed form together with the flushed and cleaned pump to KNF Customer Service Customer decontamination declaration for repair order We...

Страница 24: ......

Отзывы: