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Diaphragm pump N85, N86 

 

About this document 

Original-Operating and Installation Instructions, english, KNF 121258-121528 01/20 

 

1.  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. 

  Pass on the Operating and Installation Instructions to the next 

owner. 

Customer-specific project pumps (pump models which begin with 
“PJ” or “PM”) may differ from the Operating and Installation Instruc-
tions. 

  For project pumps, also observe the agreed upon specifica-

tions. 

 

1.2.  Symbols and markings 

Warning 

 

WARNING 

 A danger is located here. 

 

Possible consequences of a failure to observe the 
warning are specified here. The signal word, e.g. 
Warning, indicates the danger level. 

 

  Measures for avoiding the danger and its conse-

quences are specified here. 

 

Danger levels 

Signal word  Meaning 

Consequences if not observed 

DANGER 

warns of immedi-

ate danger 

Death or serious injuries and/or 

serious damage are the conse-

quence. 

WARNING 

warns of possible 

danger 

Death or serious injuries and/or 

serious damage are possible. 

CAUTION 

warns of a possi-

bly dangerous 

situation 

Minor injuries or damage are 

possible. 

 

Tab. 1 

 

Other information and symbols 

  An activity to be carried out (a step) is specified here. 

1.  The first step of an activity to be carried out is specified here. 

Additional, consecutively numbered steps follow. 

 

This symbol refers to important information. 

Project pump 

Summary of Contents for N85.3

Page 1: ...85 3 N86 TRANSLATION OF ORIGINAL OPERATING AND INSTALLATION INSTRUCTIONS ENGLISH DIAPHRAGM PUMP Note Before operating the pump and the accessories please read the operating instructions and pay attent...

Page 2: ...nction 12 6 Transportation 15 7 Installation and connection 16 8 Operation 25 9 Servicing 27 10 Troubleshooting 36 11 Spare parts and accessories 38 12 Returns 39 KNF Neuberger GmbH Alter Weg 3 79112...

Page 3: ...NING A danger is located here Possible consequences of a failure to observe the warning are specified here The signal word e g Warning indicates the danger level Measures for avoiding the danger and i...

Page 4: ...m Before using a medium check whether the medium can be trans ferred danger free in the specific application case Before using a medium check the compatibility of the materials of the pump head diaphr...

Page 5: ...Make sure that the personnel has read and understood the Operat ing and Installation Instructions and in particular the Safety chap ter Observe the accident prevention and safety regulations when per...

Page 6: ...re partly completed machinery and are therefore to be regarded as not ready for use Partly completed machinery may not be commissioned until such time as it has been determined that the machine in whi...

Page 7: ...free But KNF recommends checking 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 Housi...

Page 8: ...TFE coated Valves FFPM Tab 4 Pneumatic values N85 3K_E N85 3K_DC Parameter Value Max permissible operating pressure bar g 0 3 Ultimate vacuum mbar abs N85 3KNE N85 3KNDC N85 3KTE N85 3KTDC 25 30 Deliv...

Page 9: ...read size G 1 8 N86 Thread size G 1 8 Tab 8 Electrical data N85 3K__E N86K_E Parameter Value Voltage V Frequencies Hz See type plate Max operating current A Pump power consumption Protection class Mot...

Page 10: ...uations 10 Tab 10 The pumps are not protected against overloading and they have no overcurrent protection N85 3K__DC B N86K_DC B Parameter Value Motor type Brushless DC motor Voltage V See type plate...

Page 11: ...bient tempera ture 5 bis 40 Permissible media temperature 5 bis 40 Dimensions L x W x H mm N85 3K_E N86K_E N85 3K_DC N86K_DC N86K_DC B ca 131 x 75 x 109 ca 104 x 91 x 69 ca 129 x 50 x 105 ca 106 x 74...

Page 12: ...ions english KNF 121258 121528 01 20 5 Design and function Design N85 3K_E Fig 1 Design N85 3K_E Design N86K_E Fig 2 Design N86K_E 1 Inlet suction side 2 Pneumatic connection 3 Outlet pressure side 4...

Page 13: ...structions english KNF 121258 121528 01 20 13 Design N85 3K_DC Fig 3 Design N85 3K_DC Design N86K_DC Fig 4 Design N86K_DC 1 Inlet suction side 2 Pneumatic connection 3 Outlet pressure side 4 Electrica...

Page 14: ...diaphragm 4 is moved up and down by the eccentric 5 and the connection rod 6 In the downward stroke it aspirates the gas to be transferred via the inlet valve 2 In the upward stroke the diaphragm pres...

Page 15: ...quipment e g safety gloves safety shoes Only two headed pump CAUTION Personal injury and or damage to property because of false or improper transportation of the pump If the pump is raised and or carr...

Page 16: ...perate the pumps under the pneumatic operating parameters and conditions described in Chapter 4 Technical Data Observe the safety precautions see Chapter 3 7 1 Installation of the pump Before installa...

Page 17: ...6 Installation and connection Translation of original Operating and Installation Instructions english KNF 121258 121528 01 20 17 Fig 8 Mounting dimensions pump series N86K_E Fig 9 Mounting dimensions...

Page 18: ...tion Diaphragm pump N85 N86 18 Translation of original Operating and Installation Instructions english KNF 121258 121528 01 20 Fig 10 Mounting dimensions pump series N86K_DC Fig 11 Mounting dimensions...

Page 19: ...installation location is accessible for ser vice The IP protection class of the pump motor is indicated on the type plate Install the pump at the highest point in the system to prevent condensate fro...

Page 20: ...connection is impossible For pumps with AC motor The motors of the pump must be protected according to DIN EN 60204 1 protection against excess current or overload ing For max operating current of the...

Page 21: ...t demands for EMC protection table 3 EMC protection D C power in and outputs Remark 3 quota tion Not to be used with input connections which are foreseen for a connection with a battery or a rechargea...

Page 22: ...nce suppression according to DIN EN 55014 1 A1 pump types equipped with the brushless DC motor DC B without K marking on the type plate of the motor must be equipped with a supplemental electronic cir...

Page 23: ...nal VCrtl Steuerspannungsbereich DC Control voltage range DC V 1 0 4 7 Max Eingangsspannung Max input voltage V 30 Schwellenspannung Treshold voltage V 1 0 0 2 Eingangswiderstand VCtrl 5V Input resist...

Page 24: ...sure connection of the pump and the first shut off valve If the pump s used as a vacuum pump safely discharge the pump exhaust at the pump s pneumatic outlet Connecting pump A marking on the pump head...

Page 25: ...umps are not used improperly see Chapter 2 2 Observe the safety precautions see Chapter 3 The pumps are intended for installation Before putting them into service it must be established that machinery...

Page 26: ...or vacuum during switch on This also applies in operating following a brief power failure If a pump starts against pressure or vacuum it may block This activates the thermal switch and the pump switc...

Page 27: ...it with air or with inert gas if required for safety reasons under atmospheric conditions ambient pressure for about five minutes 9 2 2 Cleaning pump Pump disconnected from mains and de energized WARN...

Page 28: ...he same time the nominal per formance of the pump is not guaranteed after the servicing WARNING Dangerous substances in the pump can cause a health hazard Depending on the substance transferred causti...

Page 29: ...o turning or holding the cooling fan the necessary operations must be carried out by turning or holding the counterweight 16 b Removing the pump head 1 Mark the position of the head plate 3 intermedia...

Page 30: ...pacer s and disc spring into the connecting rod clockwise and tighten it by hand d Changing the valve plates 1 Separate the head plate 3 from intermediate plate 2 2 Remove the valve plates sealings 7...

Page 31: ...8 01 20 31 7 Now tighten screws 4 firmly and diagonally 8 Refit the pneumatic connection 5 f Final steps 1 In the case of DC version no cooling fan refix the cover 6 to housing 1 2 Connect the pump to...

Page 32: ...e valve plates sealings are not changed at the same time the nominal per formance of the pump is not guaranteed after the servicing WARNING Dangerous substances in the pump can cause a health hazard D...

Page 33: ...and secure it 2 Only for models with dc motors no cooling fan remove cover 6 from pump housing 1 to do this insert a screwdriver into the slots on the sides and prise the cover off with care the seali...

Page 34: ...iaphragm and retain them 4 Check that all parts are free from dirt and clean them if neces sary see Chapter 9 2 Cleaning 5 Put the diaphragm support diaphragm spacer s and disc spring in that order on...

Page 35: ...d by the marking M 3 Check that the head plate is centred by moving it gently side ways 4 Gently tighten the screws 4 evenly and diagonally 5 Turn the fan to check that the pump rotates freely 6 Turn...

Page 36: ...shless DC motor Wrong polarity of the connection wires Separate pump from the mains Be aware of right polarity of the connection wires and con nect pump For pumps with AC motor The pump s thermal swit...

Page 37: ...hoses are properly seated on the hose con nectors Replace leaking hoses Eliminate leaks Connections or hoses complete ly or partially clogged Check hoses and connections Remove any parts or particles...

Page 38: ...needed for complete overhaul of the pump head For one headed pumps 1x diaphragm 2x valve plates sealings For two headed pumps 2x diaphragm 4x valve plates sealings Spare parts kit for pump type Order...

Page 39: ...requisite 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...

Page 40: ...KNF worldwide Find your local KNF partner on www knf com...

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