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KNF N 920 APE-W Operating And Installation Instruction

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KNF 121690-121708 09/19
OEM
DIAPHRAGM
VACUUM PUMP
Note!
Before operating the pump and the accessories, please read the operating instructions and pay attention to
the safety precautions!
N 920
TRANSLATION OF ORIGINAL OPERATING AND
INSTALLATION INSTRUCTIONS
ENGLISH

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Summary of Contents for KNF N 920 APE-W

  • Page 1 KNF 121690-121708 09/19 N 920 TRANSLATION OF ORIGINAL OPERATING AND INSTALLATION INSTRUCTIONS ENGLISH DIAPHRAGM VACUUM PUMP Note! Before operating the pump and the accessories, please read the operating instructions and pay attention to the safety precautions!

  • Page 2: Table Of Contents

    KNF Neuberger GmbH Alter Weg 3 79112 Freiburg Contents Page Germany 1. About this document ..............3 Phone +49-(0)7664-5909-0 2. Use.................... 4 Fax +49-(0)7664-5909-99 3. Safety ..................6 4. Technical Data ................9 E-mail: info@knf.de 5. Design and function ..............11 www.knf.de...

  • Page 3: About This Document

    Vacuum Pumps N 920 APE-W and N 920 APDC-B About this document About this document 1.1. Using the Operating and Installation Instructions The Operating and Installation Instructions are part of the pump. ➔ Always keep the Operating and Installation Instructions handy in the work area.

  • Page 4: Use

    Only transfer gases which remain stable under the pressures and temperatures occurring in the pump. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 5 The pumps are not suitable for use with aggressive media. Other pumps in the KNF product line are designed for use with aggres- sive media. Please contact us for more information. The pumps must not be used to create vacuum and overpressure simultaneously.

  • Page 6: Safety

    For pump N 920 APE-W: Open housing parts with notice sticker (see Fig. 1) only after separating mains plug from power source. Ensure that the pump is separated from the mains and is de-ener- gized.
  • Page 7 N 920 APE-W N 920 APDC-B DIN EN 61326-1 (Class A) DIN EN 61326-1 (Class A) DIN EN 61000-6-2/3 DIN EN 50581 DIN EN 60204-1 DIN EN 50581 Tab. 2 Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 8 The pump is maintenance-free. But KNF recommends, checking repairs the pump regularly with regard to conspicuous changes in noise and vibrations. Only have repairs to the pumps carried out by the KNF Customer Service responsible. Housing with voltage-caring parts may be opened by technical per- sonnel only.

  • Page 9: Technical Data

    If one of these safety functions is triggered, the pump will be shut down and must be manually reset, as follows: ➔ Separate pump from electrical power supply ➔ Remove the cause(s) of the fault before restarting. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 10 292 x 161 x 119 Maximum permissible ambient 80% for temperatures up to relative humidity 31°C, decreasing linearly to 50% at 40°C. Max. altitude of site: 2000 [m above sea level] Tab. 9 Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 11: Design And Function

    (special design) Power switch Fig. 2: Design N 920 APE-W Design N 920 APDC-B Motor control electronics Inlet (suction side) Outlet (pressure side) Fig. 3: Design N 920 APDC-B Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 12 The working diaphragm remains stable, independent of the inlet pressure of the pump. This improves the suction speed of the pump significantly, over its entire working range. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 13: Transportation

    Parameter Parameter Value Storage temperature + 5°C to + 40°C Transport temperature - 10°C to + 60°C Permiss. Humidity (non-con- 30% to 85% densing) Tab. 10 Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 14: Installation And Connection

    ➔ Choose a safe location (flat surface) for the pump. ➔ Before installation, store the pump at the installation location to bring it up to ambient temperature. ➔ See Fig. 6 (N 920 APE-W) and Fig. 7 (N 920 APDC-B) for Mounting dimensions mounting dimensions.
  • Page 15 WARNING these components. ➔ Make sure that vibrations of the pump do not re- sult in hazards associated with adjacent compo- nents. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 16 ➔ Take protective measures against touching mov- ing parts (e.g. fans). Hazard of damage to the pump during operation ➔ Take protective measures against foreign ob- jects which could enter the pump. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 17: Electrical Connection

    ▪ the cables will not chafe or be damaged on sharp edges or corners. ▪ no pulling or pushing forces are exerted on the cable’s connection points (strain relief). Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 18 Control voltage may only be applied if the motor controller is supplied with operating voltage. Otherwise damages can occur on the motor controller. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 19 3. Connect the suction line and pressure line (see Chapter 4, Tab. 9 for mounting dimensions). 4. Lay the suction and pressure line at a downward angle to pre- vent condensate from running into the pump. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 20: Operation

    ➔ 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 con- stricted. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 21 ➔ Make sure that normal atmospheric pressure is present in the lines during switch-on. ➔ Only pump N 920 APE-W: Switch on pump with mains switch (see Fig. 2). Depending on the level of the applied electrical voltage, initiali- zation of the electronics can take up to one second, before the pump starts.
  • Page 22 Only for pumps with external actuation at the control cable con- nection. ▪ Control cable and Level-Translator, see accessories on page ▪ Control pin assignments, see Tab. 12, page 24. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 23 / red AWG 18 + Supply voltage - Speisespannung schwarz / black / GND AWG 18 - Ground (0V) Tab. 11 : Connection plan motor electronics N 920 APDC-B Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 24 / 5V Power supply U Ausgangsspannung DC 5 ± 0.2 Control voltage range DC Max. Ausgangsstrom [mA] Max. current output Tab. 12 (part 1): Connection plan motor electronics N 920 AP.29DC-B Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 25 Input level „low” → motor OFF [0 … 0.9] Eingangsimpedanz @ 1 kHz ≥ 1.8 [kΩ] Input impedance @ 1 kHz Tab. 12 (part 2): Connection plan motor electronics N 920 AP.29DC-B Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 26 At the same time the default voltage for the white wire de- creases. Because of this the nominal final speed can no longer be reached. Fig. 10: Exposition Control without Potentiometer Fig. 11: Exposition Control with Potentiometer Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 27 ▪ Modify control voltage values U and U Ctrl min Ctrl max ▪ If the control voltage is less than U , the motor will be Ctrl min Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 28 Tab. 12). To start the motor, the green wire must be bridged to the ground of the controller connection (grey wire, blue wire or or- ange wire). Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 29 − Actual/Nominal motor speed − Control limit of motor speed − Operating current of the motor − Temperature of the motor controller − Fault status − Software version number Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 30 Nominal motor speed ns ; E Minimum possible motor nl ; E speed Maximum possible motor nh ; E speed Software version number V ; E Tab. 14: Read commands Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 31 See p. 24 for pin assignment of the motor controller’s commu- nication plug. Parameter Value Low: 0V…0.9V Rx KNF MBLC High: 4.2V…5.2V Low: 0V…0.6V Tx KNF MBLC High: 4.5V…5.2V Tab. 16 Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 32: Servicing

    Allen key 4 mm Felt-tip pen Stabilization diaphragm (if required) Tab. 18 ➔ Always replace diaphragm and valve plates together to main- Information on procedure tain the pump performance. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 33 13 Connecting rod, head 3 14 Diaphragm recording 15 Pump housing 16 Fan 17 Stabilization diaphragm 18 O-ring (Ø 5.5 x 2) 19 Screw Fig. 17: Exploded drawing N 920 APE-W Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 34 7. Use the assembly key to loosen the stabilization diaphragm (17) and then manually screw it out (in the counterclockwise di- rection). Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 35 5. Place the head cover (1) on the pump housing (15); tighten the screws (2) hand tight, evenly and diagonally. 6. Dispose of the old diaphragms, valve plates and O-rings properly. Fig. 18: Position of valve plates Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 36 1. Reconnect suction and pressure line to the pump. 2. Reconnect the pump to the electricity supply. If you have any questions about servicing, call your KNF technical adviser (contact data: see www.knf.com). Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 37: Troubleshooting

    ➔ Use lines or connection parts with larger cross section if section. necessary. ➔ Check that tubes sit correctly on hose nozzles. Leaks occur on connections, ➔ Replace leaky tubes. lines or pump head. ➔ Eliminate leaks Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...
  • Page 38 2. Clean the pump (see Chapter 9.2.2). 3. Send the pump, together with completed Health and Safety Clearance and Decontamination Form, to KNF stating the na- ture of the transferred medium. Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 39: Spare Parts And Accessories

    5V to ≤ 5V. External potentiometer for setting of the On request speed RS232 Level-Translator with SUB-D9 plug On request RS232 Level-Translator with Micro-USB plug On request Tab. 22 Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19...

  • Page 40: Returns

    Prerequisite for repairing a pump by KNF is a completed Decon- tamination Form. This is made available on the KNF website as a download. To find the form, select your country on the overview page (www.knf.com). You can find the Decontamination Form in the download area.

This manual is also suitable for:

N 920 apdc-b

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