KNF N630 User manual

N630
TRANSLATION OF ORIGINAL OPERATING AND
INSTALLATION INSTRUCTION
ENGLISH
KNF 311978-311981 02/22 EN-US
Process
Notice!
Before operating the pump and accessories, read and observe the operating and installation instructions as
well as the safety information!
DIAPHRAGM PUMP

Index
1 About this document ......................................................... 3
1.1 Using the operating and installation instructions.......3
1.2 Exclusion of liability...................................................3
1.3 Symbols and markings..............................................4
2 Safety................................................................................ 6
2.1 Personnel and target group ......................................6
2.2 Responsibility of the operator ...................................6
2.3 Working in a safety conscious manner .....................7
2.4 Operating conditions .................................................7
2.5 Media ........................................................................7
2.6 Use............................................................................8
2.7 Directives and standards ..........................................9
2.8 Customer service and repair.....................................9
2.9 Disposal ....................................................................9
3 Technical data ................................................................ 10
3.1 Technical data.........................................................10
4 Product description and function .................................... 15
5 Transport ........................................................................ 19
General ...................................................................19
Transport with carrying strap ..................................20
Transporting with lifting eyebolt ..............................22
6 Installation and connection ............................................. 24
6.1 Installing the pump..................................................24
6.2 Electrical connection ...............................................28
6.3 Pneumatic connection.............................................29
6.4 Connecting water cooling (optional)........................30
7 Operation ........................................................................ 35
7.1 General ...................................................................35
7.2 Information on switching the pump on and off ........37
8 Servicing ......................................................................... 38
8.1 Servicing schedule..................................................39
8.2 Cleaning..................................................................39
8.3 Changing diaphragm and reed valves ....................40
9 Troubleshooting .............................................................. 45
10 Spare parts and accessories .......................................... 47
10.1 Spare parts .............................................................47
10.2 Accessories.............................................................48
11 Returns ........................................................................... 49
12 Appendix......................................................................... 50
12.1 Betriebsanleitung Drehstrommotor.pdf ...................51
12.2 CE-Erklärung Drehstrommotor.pdf .........................67
12.3 Betriebsanleitung Kondensatormotor.pdf................68
12.4 CE-Erklärung Kondensatormotor DE-EN.pdf..........85
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Tel. [phone]
Fax. [phone]
www.knf.com

Diaphragm pump N630 About this document
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 3
1 About this document
1.1 Using the operating and installation instructions
The operating and installation instructions are part of the pump.
àIn the event of uncertainties with regard to the content of the operating
and installation instructions, please contact the manufacturer (contact
data: see www.knf.com). Please have the type and serial number of
the pump ready.
àRead the operating and installation instructions before you commission
the pump.
àGive the operating and installation instructions only completely and un-
changed to the next owner.
àKeep the operating and installation instructions within reach at all
times.
Project pumps For customer-specific project pumps (pump models that begin with "PJ" or
"PM"), there may be deviations from the operating and installation instruc-
tions.
àFor project pumps, also observe the agreed specifications.
Motor The operating and installation instructions apply for the pump part.
àAlso observe the operating instructions for the motor in the appendix.
àAlso observe the operating instructions for the coupling in the appen-
dix.
1.2 Exclusion of liability
The manufacturer assumes no liability for damages and malfunctions re-
sulting from failure to observe the operating and installation instructions.
The manufacturer assumes no liability for damages and malfunctions re-
sulting from changes or modifications to the device and improper handling.
The manufacturer assumes no liability for damages and malfunctions re-
sulting from impermissible spare parts and accessories.

About this document Diaphragm pump N630
4 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
1.3 Symbols and markings
Warning notice
WARNING
A notice that warns you of danger is located here.
Possible consequences of a failure to observe the
warning notice are specified here. The signal
word, e.g. warning, indicates the danger level.
àMeasures for avoiding the danger and its
consequences are specified here.
Danger levels
Signal word Meaning Consequences if not
observed
DANGER warns of immediate
danger
Death or serious injury
or serious damage will
result.
WARNING warns of possible dan-
ger
Death, serious injury or
serious damage is pos-
sible.
CAUTION warns of a possibly
dangerous situation
Minor injury or damage
is possible.
NOTICE warns of possible dam-
age
Damage is possible.
Tab.1 Danger levels
Other notices and symbols
àAn activity to be carried out is specified here (a step).
1. The first step of an activity to be carried out is specified here.
Follow other sequentially numbered steps.
This symbol indicates important information.

Diaphragm pump N630 About this document
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 5
Explanations of pictograms
Pictogram Meaning
General warning symbol
Warning of hot surface
Warning of electrical voltage
Warning of poisonous substances
Warning of hand injuries through crushing
Observe the operating instructions
General mandatory sign
Wear hearing protection
Environmentally conscious disposal
Tab.2 Explanations of pictograms

Safety Diaphragm pump N630
6 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
2 Safety
Observe the safety notices in Chapters Commissioning and Opera-
tion.
2.1 Personnel and target group
Personnel Make sure that only specially trained and instructed personnel work on the
pumps. This applies, in particular, to mounting, connection and servicing
work.
Make sure that the personnel have read and understood the operating in-
structions, particularly the chapter on safety.
Target group Target group Definition
User Employee
Specialized personnel Specialized personnel are personnel
who
- have relevant professional training
in the field covered in the particular
section of text;
- have current knowledge of the field
covered in the particular section of
text.
Tab.3 Target group
Who-does-what matrix Lifecycle phase User Specialized personnel
Transport X
Mounting X
Connection X
Commissioning X X
Operation X X
Servicing X
Troubleshooting X
Disposal X
Tab.4 Who-does-what matrix
2.2 Responsibility of the operator
The pumps are produced in accordance with the generally recognized
rules of engineering, as well as the occupational health, safety and acci-
dent prevention regulations. Nevertheless, dangers can arise during their
use that lead to injuries to the user or third parties or to damage to the
pump or other property.
Only use the pumps in perfect technical condition, for their intended use,
safely and with an awareness of the dangers and in observation of the op-
erating and installation instructions.
The components that are to be connected to the pumps must be designed
according to the pneumatic data of the pumps.
When connecting the pumps to the electrical power, observe the corre-
sponding safety rules.
Make sure that no hazardous situation, physical harm or impairment of the
pump can occur.
Operating
parameters
Only operate and install the pump under the operating parameters and op-
erating conditions described in Chapters 2.4 Operating conditions and 3
Technical data.

Diaphragm pump N630 Safety
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 7
2.3 Working in a safety conscious manner
Observe the regulations on accident prevention and safety during all work
on the pumps and during operation.
Avoid contact with the pump heads and housing parts because the pump
heats up during operation.
When working on the pump, make sure that the pump is disconnected
from mains and without power.
When connecting the pump to the electrical mains, observe the corre-
sponding safety rules.
Ensure that no hazards arise from gas flowing when gas connections are
open, from the effects of noise or from hot, corrosive, dangerous and envi-
ronmentally hazardous gases.
Make sure that an EMC-compliant installation of the pump is ensured at all
times to prevent the occurrence of dangerous situations.
2.4 Operating conditions
Only use the pump in perfect technical condition, for its intended purpose,
safely and with an awareness of the dangers and in observation of the op-
erating instructions.
Protect the compressors with a pressure relief device between the pres-
sure side of the compressor and the first shut-off valve.
Only install and operate the pumps in accordance with the operating pa-
rameters and conditions described in Chapter 3 Technical data.
Only pumps that are fully assembled and in the condition as delivered may
be operated.
Make sure that the installation location is dry and that the pump is pro-
tected from rain, splash water, gushing water, dripping water and other
contamination.
Check the tightness of the connections between the pipes of the applica-
tion and the pump (or the connection of the pump) at regular intervals.
Leaky connections carry the risk of releasing dangerous gases and vapors
from the pump system.
2.5 Media
Requirements of pumped media Before transferring a medium, check whether the medium can be trans-
ferred without risk in the specific application.
Take note of any change in the state of matter (condensation, crystalliza-
tion).
Before using a medium, check the compatibility of the media-contacting
components (see 3 Technical data) with the medium.
Risk of dangerous gas mixtures during pump operation if diaphragm
breaks: Depending on the medium being transferred, breakage of the di-
aphragm can result in a dangerous mixture if the medium mixes with the
air in the compressor housing or the surroundings.
Only transfer gases that remain stable under the pressures and tempera-
tures that arise in the pump.
Handling of
hazardous
media
Upon breakage of the diaphragm and/or leaks, the transferred medium
mixes with the air in the surroundings and/or in the pump housing.
Make sure that a dangerous situation cannot arise as a result.
When pumping hazardous media, observe the safety regulations for the
handling of said media.
Handling of combustible media Note that the pump is not designed to be explosion-proof.

Safety Diaphragm pump N630
8 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
Make certain that the temperature of the medium is always sufficiently be-
low the ignition temperature of the medium so as to prevent ignition or ex-
plosion. This also applies for abnormal operating situations.
Note that the temperature of the medium increases when the pump com-
presses the medium.
Therefore, make certain that the temperature of the medium also remains
sufficiently below the ignition temperature of the medium even when it is
compressed to the maximum permissible operating pressure of the pump.
The maximum permissible operating pressure of the pump is stated in
Chapter 3 Technical data.
Make certain that the permissible ambient temperature (see 3 Technical
data) is not exceeded.
Where applicable, also take into account external energy sources (such as
radiated heat sources) that could additionally heat the medium.
In case of doubt, contact KNF Customer Service.
2.6 Use
2.6.1 Proper use
The pumps are intended exclusively for transferring gases and vapors.
The pumps are intended exclusively for operation in indoor areas and in
non-explosive atmospheres.
Variable frequency drive Pumps with three-phase motor are designed for operation with a variable
frequency drive in the speed range 500 – 1500 rpm (50 Hz) or 600 – 1800
rpm (60 Hz) (see also Chapter 6.2 Electrical connection).
2.6.2 Foreseeable misuse
The pumps must not be operated in explosive atmospheres.
The pumps are not suitable for transferring the following:
§Dusts
§Liquids
§Aerosols
§Biological and microbiological substances
§Fuels
§Explosives and flammable materials
§Fibers
§Oxidizing agents
§Foodstuffs.
The pumps must not be used for simultaneous generation of a vacuum
and positive pressure.
This function can be made possible on a project basis following consulta-
tion with KNF Customer Service.
No overpressure may be applied to the suction side of the pump.
This function can be made possible on a project basis following consulta-
tion with KNF Customer Service.
Pumps with capacitor motor are not intended for operation with a fre-
quency converter.

Diaphragm pump N630 Safety
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 9
2.7 Directives and standards
EU/EC
Directives
EU conformity assessment
The pump complies with the requirements of the following directives:
§Electromagnetic Compatibility Directive 2014/30/EU
§Directive 2009/125/EC for establishing a framework for the setting of
eco-design requirements for energy-related products and ordinance
(EU) 2019/1781 for the setting of eco-design requirements for electric
motors and speed controls in accordance with Directive 2009/125/EC
of the European Parliament and of the Council.
Standards The following harmonized standards apply:
§EN 61000-6-1/2/3/4
§EN 60034-1
§EN 60034-30-1 (only pumps with three-phase motor)
2.8 Customer service and repair
Customer service and repairs The pump is maintenance-free. However, KNF recommends periodic in-
spection of the pump for obvious changes in noise or vibration.
Only have repairs to the pumps performed by qualified KNF personnel.
Housings with electrically live components may only be opened by special-
ist personnel.
Use only genuine spare parts from KNF when performing servicing work.
2.9 Disposal
Environmental protection
WEEE
Store and dispose of the pump as well as all replacement parts in accor-
dance with environmental regulations. Observe national and international
regulations. This applies in particular to parts that are contaminated with
toxic substances.
If you no longer need your packaging materials (e.g. for return shipment or
other transport of the vacuum system), dispose of them in an environmen-
tally friendly manner.
Dispose of old electronic devices in an environmentally responsible man-
ner. Dispose of old electronic devices via suitable collection systems. Old
electronic devices contain valuable recyclable materials.

Technical data Diaphragm pump N630
10 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
3 Technical data
3.1 Technical data
Pump materials
N630SP/STE
N630.1.2SP/STE
N630.3SP/STE
N630.15SP/STE
Assembly Material SP Material ST
Head plate, intermediate plate Stainless steel Stainless steel
Diaphragm EPDM PTFE
Reed valves Stainless steel Stainless steel
Valve limiter Stainless steel Stainless steel
Slotted cap screw Stainless steel Stainless steel
O-ring FPM FPM
Retainer plate Stainless steel Stainless steel
Retainer plate screw Stainless steel Stainless steel
Connection (only N630.1.2/.3/.15) Stainless steel Stainless steel
Tab.5
Pneumatic values
Parameter Value
N630SP
N630ST
Value
N630.1.2SP
N630.1.2ST
Value
N630.3SP
N630.3ST
Value
N630.15SP
N630.15ST
Max. permissible oper-
ating pressure [bar rel*]
-Continuous operation
7.0 7.0 0.5 12
Ultimate vacuum [mbar
abs.]
120 120 25 70
Flow rate at atm. pres-
sure [L/min]**
-50 Hz
-60 Hz
30
35
58
68
30
35
30
35
Tab.6 *bar rel related to 1013 hPa
**Liters in standard state (1013 hPa, 20°C)
Pneumatic connections
Pump type Value
N630, N630.3, N630.15 Thread size G 1/4*
N630.1.2 For 10 mm OD pipe
Tab.7 *Acc. to ISO 228

Diaphragm pump N630 Technical data
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 11
Connection for water cooling
Pump type Value Value
N630 Thread size G
1/4*
9 mm ID tubing
N630.1.2 Thread size G
1/4*
9 mm ID tubing
N630.3 Thread size G
1/4*
9 mm ID tubing
N630.15 Thread size G
1/4*
9 mm ID tubing
Tab.8 *Acc. to ISO 228
Electrical data for pumps with a capacitor motor
N630
Parameter Value Value Value Value
Voltage [V]* 100 115 220 230
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 580 610 560 520
Current consumption [A] 10.0 6.0 2.8 3.9
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.9 *For further voltage and frequency variants, see type plate
**See type plate
N630.1.2
Parameter Value Value Value Value
Voltage [V]* 100 115 220 230
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 710 750 700 670
Current consumption [A] 9.5 7.0 3.3 4.2
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.10 *For further voltage and frequency variants, see type plate
**See type plate
N630.3
Parameter Value Value Value Value
Voltage [V]* 100 115 220 230
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 580 610 560 520
Current consumption [A] 10.0 6.0 2.8 3.9
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.11 *For further voltage and frequency variants, see type plate
**See type plate

Technical data Diaphragm pump N630
12 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
Electrical data for pumps with a three-phase motor
N630
Parameter Value Value Value Value
Voltage [V]* 200/346 277/480 220/380 230/400
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 340 350 360 340
Current consumption [A] 3.3/1.9 2.2/1.25 2.8/1.6 3.3/1.9
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.12 *For further voltage and frequency variants, see type plate
**See type plate
N630.1.2
Parameter Value Value Value Value
Voltage [V]* 200/346 277/480 220/380 230/400
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 540 530 530 510
Current consumption [A] 3.3/1.9 2.35/1.35 3.0/1.7 3.3/1.9
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.13 *For further voltage and frequency variants, see type plate
**See type plate
N630.3
Parameter Value Value Value Value
Voltage [V]* 200/346 277/480 220/380 230/400
Frequency [Hz]* 50/60 60 60 50
Power P1 [W] 350 350 360 340
Current consumption [A] 3.3/1.9 2.2/1.25 2.8/1.6 3.3/1.9
Drive protection class See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.14 *For further voltage and frequency variants, see type plate
**See type plate

Diaphragm pump N630 Technical data
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 13
N630.15
Parameter Value Value Value Value Value
Voltage [V]* 200/346 200/346 277/480 220/380 230/400
Frequency [Hz]* 50 60 60 60 50
Power P1 [W] 540 540 540 540 510
Current consumption
[A]
6.15/3.55 7.0/4.05 7.0/4.05 3.9/2.2 6.5/3.75
Drive protection
class
See drive type plate
Max. permissible line
voltage fluctuations
See operating instructions for drive
Tab.15 *For further voltage and frequency variants, see type plate
**See type plate
Thermal switch/PTC thermistor
sensor The motors are equipped as standard with a thermal switch (capaci-
tor motor) or with PTC thermistor sensor (three-phase motor) to
monitor against overheating (see operating instructions for the mo-
tor).
Weight
Pump type Weight [kg]
SP/ST
N630 Approx. 36
N630.1.2 Approx. 45
N630.3 Approx. 45
N630.15 Approx. 55
Tab.16 Weight

Technical data Diaphragm pump N630
14 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
Other parameters
Parameter Value
Permissible ambient temperature
[°C]
- without water cooling
- with water cooling (three-phase
motor)
- with water cooling (capacitor mo-
tor)
+5 to +40
+5 to +60
+5 to +50
Permissible media temperature [°C]
- without water cooling
- with water cooling
+5 to +40
+5 to +60
Max. surface temperature* [°C] +85
Dimensions See Chapter 6.1 Installing the pump
Gas tightness** of the pump head
(Leak rate):
N630.9, N630.1.2.9, N630.3.9,
N630.15.9
N630.13, N630.1.2.13, N630.3.13,
N630.15.13
< 6 x 10-3 mbar L/s***
< 5 x 10-5 mbar L/s***
Highest permissible relative air hu-
midity of the environment
80% for temperatures to 31°C, de-
creasing linearly to 50% at 40°C
(non-condensing).
Maximum installation altitude [m
above sea level]
See operating instructions for drive
Protection class of pump IP20
Noise**** Max. 70-80 dB (A)
Tab.17 *To reduce the surface temperature of the pump heads and to extend the
service life of the diaphragm, you can optionally attach a water cooling system (see
Chapter 6.4 Connecting water cooling (optional)).
**The gas tightness of the pump head is no longer ensured after the pump head is
opened or after the diaphragm and reed valves are changed. A leak test can be
used to determine whether the original gas tightness is achieved again.
***Values apply to helium leak test
****Max. emission sound pressure level over the entire pressure range with gas
connections attached
Start-up against pressure/
vacuum Please contact KNF Customer Service.

Diaphragm pump N630 Product description and function
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 15
4 Product description and function
Design
1Pneumatic pump outlet
2Pneumatic pump inlet
3Electrical terminal box
4Motor
5Motor fan cowl
6Connection for water
cooling
65
4
32
1
Fig.1 Design N630

Product description and function Diaphragm pump N630
16 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
1Union nut
2Connection for water
cooling
3Pneumatic head con-
nection
4Pneumatic pump inlet
5Motor
6Motor fan cowl
7Electrical terminal box
8Pneumatic pump outlet
1
2
134 5 6
3
8
217
1
Fig.2 Design N630.1.2

Diaphragm pump N630 Product description and function
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 17
1Pneumatic pump outlet
2Connection for water
cooling
3Union nut
4Pneumatic head con-
nection
5Motor
6Motor fan cowl
7Electrical terminal box
8Pneumatic pump inlet
3
2 7
6
5
43
2
1
8
Fig.3 Design N630.3
1Pneumatic pump inlet
2Connection for water
cooling
3Union nut
4Pneumatic head con-
nection
5Motor
6Motor fan cowl
7Electrical terminal box
8Pneumatic pump outlet
4
3
2
1
8
237
6
5
Fig.4 Design N630.15

Product description and function Diaphragm pump N630
18 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
Function of a diaphragm pump
1Outlet valve
2Inlet valve
3Transfer chamber
4Diaphragm
5Eccentric
6Connecting rod
21
4
3
6
5
Fig.5 Function of a diaphragm pump
Diaphragm pumps transfer, compress (depending on the version) and evacu-
ate gases and vapors.
The elastic diaphragm (4) is moved up and down by the eccentric (5) and the
connecting rod (6). In the downwards stroke, it aspirates the gas to be trans-
ferred via the inlet valve (2). In the upwards stroke, the diaphragm presses the
medium out of the pump head via the outlet valve (1). The transfer chamber
(3) is separated from the pump drive by the diaphragm.

Diaphragm pump N630 Transport
Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22 19
5 Transport
General
CAUTION
Personal injury and/or property damage due to in-
correct or improper transport of the pump
In the event of incorrect or improper transport, the
pump can fall down, be damaged or injure per-
sons.
àUse suitable auxiliary means if necessary
(carrying strap, lifting gear, etc.).
àWhere appropriate, wear suitable personal
protective equipment (e.g., safety shoes,
safety gloves).
CAUTION
Risk of injury from sharp edges on the packaging
There is a risk of injury from cutting on the sharp
edges when grabbing corners or when opening
the packaging.
àWhere appropriate, wear suitable personal
protective equipment (e.g., safety shoes,
safety gloves).
Only for two-headed pumps:
CAUTION
Personal injury and/or property damage due to in-
correct or improper transport of the pump
If the pump is raised and/or carried on the connec-
tion during transport, leaks and/or damages to the
pump may result.
àDo not carry the pump on the pneumatic con-
nection.
àTransport the pump in the original packaging to the installation loca-
tion.
àStore the original packaging of the pump (e.g. for later storage).
àInspect the pump for transport damage after receiving it.
àDocument any transport damage in writing.
àRemove any transport locking devices on the pump prior to commis-
sioning.

Transport Diaphragm pump N630
20 Translation of Original Operating and Installation Instruction, english, KNF 311978-311981 02/22
Parameter
Parameter Value
Storage temperature [°C] + 5 to + 40
Transport temperature [°C] - 10 to + 60
Permissible humidity (non-condens-
ing) [%]
30 to 85
Max. storage period
(Aging, ball-bearing grease) [Mon.]
48
Tab.18 Transport parameter and storage parameter
NOTICE
Prior to commissioning, make sure that the pump
has reached the ambient temperature (3 Techni-
cal data).
Transport with carrying strap
Fig.6 Position of carrying strap (example)
1. Pull the carrying strap under the pump (see Fig. 6).