KNF N 2400.15 User manual

KNF 308934-308937 09/18
OEM
N2400.15
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 attention to
the safety precautions!

Contents Page
1. About this document...................................................................3
2. Use..............................................................................................5
3. Safety..........................................................................................7
4. Technical Data..........................................................................10
5. Design and function..................................................................13
6. Transportation...........................................................................15
7. Installation and connection.......................................................18
8. Operation..................................................................................25
9. Servicing...................................................................................27
10.Troubleshooting........................................................................33
11.Spare parts and accessories....................................................35
12.Returns .....................................................................................36
13.Health and safety clearance and decontamination form..........37
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Phone [phone]
Fax [phone]
E-mail: [e-mail]
www.knf.de

Diaphragm pump N 2400.15 About this document
Original-Operating and Installation Instructions, english, KNF 308934-308937 09/18 3
1. About this document
1.1. Using the Operating and Installation
Instructions
The Operating and Installation Instructions are part of the pump.
In several Chapters of these Operating and Installation Instruc-
tions there will be referred to the Operating Instruction of the
motor manufacturer. It is attached to these Operating and In-
stallation Instruction.
Always keep the Operating and Installation Instructions handy
in the work area.
Pass on the Operating and Installation Instructions to the next
owner.
Compliance with the Operating and Installation Instructions is
essential for the safe and reliable operat
ion of the pump. Fail-
ure to do so many results in severe or potentially life
-
threatening injury and/or serious damage.
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
Project pump

About this document Diaphragm pump N 2400.15
4 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
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.

Diaphragm pump N 2400.15 Use
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 5
2. Use
2.1. Proper use
The pumps are exclusively intended for transferring gases and
vapors.
Owner’s responsibility
Only install and operate the pumps under the operating parameters
and conditions described in Chapter 4. Technical Data.
Protect the compressors with a pressure relief device between the
pressure side of the compressor and the first shut-off valve.
Only complete pumps may be taken into service.
Make sure that the installation location is dry and the pump is pro-
tected against rain, splash, hose and drip water as well as other
pollutions.
The gas-tightness of the connections between the application
pipes and the pump (or the pump connection) must be checked
regularly; with leaky connections, there is a danger that hazardous
gases or vapors may escape from the pump system.
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 components
in contact with the medium (see 4 Technical Data) with the medi-
um.
Only transfer gases which remain stable under the pressures and
temperatures occurring in the pump.
The pumps are provided for the operation with frequency converter
in the speed range 500 – 1500 min-1(50 Hz) or 600 – 1800 min-1
(60 Hz) respectively (see Chapter 7.2).
Operating parameter and
conditions
Requirements for
transferred medium
Frequency converter

Use Diaphragm pump N 2400.15
6 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
2.2. Improper use
The pumps may not be operated in an explosive atmosphere.
The pumps are not suitable for transferring:
Dusts
Liquids
Aerosol
Biological and microbiological substances
Fuel
Explosive and combustible materials
Fibers
Oxidizing agent
Foodstuffs.
Pumps designed to create either a vacuum or an overpressure
must not be used for these two purposes simultaneously.
An overpressure must not be applied to the suction side of the
pump.

Diaphragm pump N 2400.15 Safety
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 7
3. Safety
Note the safety precautions in chapters 7. Installation and con-
nection
, and 8. Operation.
The pumps are built according to the generally recognized rules of
the technology and in accordance with the occupational safety and
accident prevention regulations. Nevertheless, dangers can result
during their use which lead to injuries to the user or others, or to
damage to the pump or other property.
Only use the pumps when they are in a good technical and proper
working order, in accordance with their intended use, observing the
safety advice within the Operating and Installation Instructions, at
all times.
Components connected to the pump must be designed to with-
stand the pneumatic performance of the pump.
Take care that safety regulations are observed when connecting
the pump to the electricity supply.
Make sure that only trained and instructed personnel or specially
trained personnel work on the pumps. This especially applies to
assembly, connection and servicing work.
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-
forming any work on the pump and during operation.
Ensure that the pump is separated from the mains and is de-
energized.
The pump heads heat up during operation – avoid contact with
them.
Make sure that there are no hazards due to flow with open gas
connections, noises or hot gases.
Ensure that an EMC-compatible installation of the pump is ensured
at all times and that this cannot lead to a hazardous situation.
When transferring dangerous media, observe the safety regula-
tions when handling these media.
If the diaphragm ruptures, the transferred medium will mix with the
air in the environment.
Take all necessary care to prevent this leading to a dangerous
situation.
Be aware that the pumps are not designed to be explosion-proof.
Make sure the temperature of the medium is always sufficiently
below the ignition temperature of the medium, to avoid ignition or
explosion. This also applies for unusual operational situations.
Note that the temperature of the medium increases when the pump
compresses the medium (compressor operation).
Personnel
Working in a safety
conscious manner
Handling dangerous media
Handling combustible media

Safety Diaphragm pump N 2400.15
8 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
Hence, make sure the temperature of the medium is 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 the technical specifications (Chapter 4).
If necessary, consider any external sources of energy, such as
radiation, that may add heat to the medium.
In case of doubt, consult the KNF customer service.
Store all replacement parts in a protected manner and dispose of
them properly in accordance with the applicable environmental
protection regulations. Observe the respective national and inter-
national regulations. This especially applies to parts contaminated
with toxic substances.
For the purposes of the Machinery Directive 2006/42/EC, pumps
are “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 which the partly completed machinery is to be assem-
bled is in conformity with the provisions of the Machinery Directive
2006/42/EC. The following essential requirements of Annex I of
Directive 2006/42/EC (general principles) are applied and ob-
served:
−General Principles No. 1
−No. 1.1.2. / 1.1.3. / 1.3.1. / 1.3.3. / 1.3.4. / 1.4.1. / 1.5.1. /
1.5.2. / 1.5.8. / 1.5.9. / 1.7.4. / 1.7.4.1. / 1.7.4.3.
As these partly completed machinery are OEM-models the power
supplies and the equipment for disconnecting and switching-off the
partly completed machinery respectively have to be considered
when mounting as well as over-current and overload protective
gear.
In addition a protection against mechanical parts in motion and hot
parts, if existing, has to be provided when mounting.
The pumps conform to the Directive 2011/65/EU (RoHS2).
The following harmonized standards have been used:
EN 60034-1
EN 61000-6-1/2/3/4
EN 60204-1
EN 60034-30-1
DIN EN 50581
Environmental protection
EU/EC Directives / Standards

Diaphragm pump N 2400.15 Safety
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 9
The pump is maintenance-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.
Housing with voltage-caring parts may be opened by technical
personnel only.
Use only genuine parts from KNF for servicing work.
Customer service and
repairs

Technical Data Diaphragm pump N 2400.15
10 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
4. Technical Data
Pump materials
N 2400.15 SPE
Assembly
Material
Head plate, intermediate plate
Stainless Steel
Diaphragm
EPDM
Reed valves/valve stopper
Stainless Steel
Retainer plate
Stainless Steel
O-ring
EPDM
Interstage cooler
Aluminum
Tab. 2
N 2400.15 STE
Assembly
Material
Head plate, intermediate plate
Stainless Steel
Diaphragm
PTFE coated
Reed valves/valve stopper
Stainless Steel
Retainer plate
Stainless Steel
O-ring
FPM
Pneumatic head connection
Stainless Steel
Tab. 3
Pneumatic values
N 2400.15 SPE
Parameter
Value
Max. permissible operating
pressure [bar rel*]:
-permanent operation
-intermittent
12.0
16.0
Ultimate vacuum [mbar abs.]
<100
Delivery rate [l/min]**
130.0
Tab. 4 *bar rel related to 1013hPa
**Liters in standard state (1013 hPa, 20°C)
N 2400.15 STE
Parameter
Value
Max. permissible operating
pressure [bar rel*]
-permanent operation
-intermittent
12.0
16.0
Ultimate vacuum [mbar abs.]
<100
Delivery rate [l/min]**
120.0
Tab. 5 *bar rel related to1013hPa
**Liters in standard state (1013 hPa, 20°C)

Diaphragm pump N 2400.15 Technical Data
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 11
Pneumatic Connections
Pump type
Value
N 2400.15 SPE
G 1/2
N 2400.15 STE
G 1/2
Tab. 6
Connection water cooling
Pump type
Value
N 2400.15 SPE
Tube ID 9mm
N 2400.15 STE
Tube ID 9mm
Tab. 7
Electrical data
Parameter
Value
Electrical data
See type plate pump
Protection class Motor
IP 55
Protection class Pump
See Type plate pump
Maximum permitted mains volt-
age fluctuations
See operating instructions of
the motor
Tab. 8
The pumps are fitted as standard with PTC sensors to protect
against overloading (see operating instructions of the mot
or).
Weight
Pump type
Value
N 2400.15 SPE
Ca. 83 kg
N 2400.15 STE
Ca. 79 kg
Tab. 9
PTC sensors

Technical Data Diaphragm pump N 2400.15
12 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
Other parameters
Parameter
Value
Permissible ambient tempera-
ture
+ 5°C to + 40°C
Permissible media temperature
+ 5°C to + 40°C
Dimensions N 2400.15 SPE
See Fig. 6, Chapter 7.1
Dimensions N 2400.15 STE
See Fig. 7, Chapter 7.1
Maximum permissible ambient
relative humidity
80% for temperatures up to
31°C, decreasing linearly to
50% at 40°C.
Max. altitude of site:
[m above sea level]
2000
Gas-tightness* of pump head*:
- .9-version:
- .13-version:
< 6 x 10-3 mbar l/s**
< 6 x 10-6 mbar l/s**
Tab. 10
*After opening the pump head or replacing the diaphragms and reed
valves the gas-tightness is no longer guaranteed. A leak test is able to
verify that the original standard of gas-tightness has been achieved.
*Values valid for helium leak test

Diaphragm pump N 2400.15 Design and function
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 13
5. Design and function
Design N 2400.15 SPE
Fig. 1: Diaphragm N 2400.15 SPE
Design N 2400.15 STE
Fig. 2: Diaphragm N 2400.15 STE
1 Pneumatic pump inlet
2 Pneumatic pump outlet
3 Connection water cooling
4 Interstage cooler
5 Fan cover
6 Motor
7 Terminal box (electrical
connection)
8 Union nut
1 Pneumatic pump inlet
2 Pneumatic pump outlet
3 Connection water cooling
4 Union nut
5 Pneumatic connection
6 Motor
7 Fan cover
8 Terminal box (electrical
connection)

Design and function Diaphragm pump N 2400.15
14 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
Function Diaphragm Pump
Fig. 3: Pump head
Diaphragm pumps transfer, compress (depending on pump ver-
sion) and evacuate gases and vapors.
The elastic 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 presses the medium out of the pump head
via the outlet valve (1). The transfer chamber (3) is hermetically
separated from the pump drive (7) by the diaphragm.
1 Outlet valve
2 Inlet valve
3 Transfer chamber
4 Diaphragm
5 Eccentric
6 Connection rod
7 Pump drive

Diaphragm pump N 2400.15 Transportation
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 15
6. Transportation
CAUTION
Personal injury and/or damage to property because
of false or improper transportation of the pump.
If the
pump is raised and/or carried at the pneumatic
connection during the transportation, this can lead to
leaks and/or damages of the pump.

Don’t carry the pump at the pneumatic connec-
tion/the interstage cooler.
CAUTION
Personal injury and/or damage to property because
of false or improper transportation of the pump.
Due to false or improper transportation the pump can
fall down, become damaged and injure people.

If necessary, use suitable aids (harness, lifting
device, etc.).

If necessary, wear proper personal protective
equipment (e.g. safety gloves, safety shoes).
CAUTION
Danger of injury due to sharp edges on the package.
When handling or opening the package there is the
possibility of injury by cutting sharp edges.

If necessary, wear proper personal protective
equipment (e.g. safety gloves).
Carry the pump in the original packaging up to its place of in-
stallation.
Retain the original packaging of the pump (e.g. for later stor-
age).
Check the pump for transport damages after receipt.
Document occurred transport damages in writing and with pic-
tures.
If necessary, remove the transportation protection before put-
ting the pump into service.
Parameter
Value
Storage temperature
+ 5°C to + 40°C
Transport temperature
- 10°C to + 60°C
Permiss. Humidity (non-
condensing)
30% to 85%
Tab. 11

Transportation Diaphragm pump N 2400.15
16 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
Transportation with harness
Fig. 4: Position of the harness (exemplary)
1. Pull the harness through among the pump (see Fig. 4).

Diaphragm pump N 2400.15 Transportation
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 17
Fig. 5:
2. Fix the harness between compressor housing and motor (Fig.
5).
3. Make sure that the lifting load cannot be transferred from the
belt to the pump connection.
4. Use a lifting device to lift the pump out of the packaging.
5. Place the pump carefully at the installation location.

Installation and connection Diaphragm pump N 2400.15
18 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
7. Installation and connection
Only install and operate 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 installation, store the pump at the installation location to
bring it up to ambient temperature.
See Fig. 6 (pump series N 2400.15 SPE) and Fig. 7 (pump
series N 2400.15 STE) for mounting dimensions.
Fig. 6: Mounting dimensions pump series N 2400.15 SPE (All dimensional
tolerances conform to DIN ISO 2768-1, Tolerance Class V)
Mounting dimensions

Diaphragm pump N 2400.15 Installation and connection
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 19
Fig. 7: Mounting dimensions pump series N 2400.15 STE (All dimensional
tolerances conform to DIN ISO 2768-1, Tolerance Class V)
WARNING
Danger of burns from hot surfaces
Hot
surfaces may be caused by overheating of the
pump.

Install the pump so that the motor fan can intake
sufficient cooling air.
When installing, make sure that there are no combustible or
thermally malleable objects placed in the immediate ambient of
the hot pump parts (head, motor).
Make sure that the installation location is dry and the pump is
protected against rain, splash, hose and drip water as well as
other pollutions.
Make sure, that the installation location is accessible for
maintenance and service.
Ensure that the pump is securely attached to the mounting
holes provided. If necessary, fasten the pump to the base plate
with rubber-bonded metals (see accessories, chapter 11; in-
formation on pump weight, chapter 4 Technical Data).
Ensure that there is no access to moving parts (such as from
the bottom of the pump housing).
Cooling air supply
Immediate ambient of the hot
pump parts
Installation location

Installation and connection Diaphragm pump N 2400.15
20 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
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 from collecting in the pump head.
Protect the pump from dust.
Protect the pump from vibrations and jolts.
WARNING
Personal injury and/or damage to property because
of vibration
In conjunction with adjacent components, vibration of
the pump may result in crushing and/or damage to
these components.

Make sure that vibrations of the pump do not
result in hazards associated with adjacent com-
ponents.
The pump can be installed in any position. Secure the pump
with metallic screws to the attachment points shown.
Protect the pump against contact and intrusion of foreign mat-
ter.
7.2. Electrical connection
DANGER
Extreme danger from electrical shock

Only have the pump connected by an authorized
specialist.

Only have the pump connected when the power
supply is disconnected.
When connecting the device to a power source, the relevant
standards, directives, regulations, and technical standards
must be observed.
For electrical connection, carefully read and observe the motor
operating instructions (also including information on insulation
resistance measurement).
In the electrical installation, arrangements (complying with
EN 60335-1) must be made for disconnecting the pump motor
from the electrical supply.
The motors of the pump must be protected according to
EN 60204-1 (protection against excess current, or overload-
ing).
For max. operating current of the pump see pump’s type plate.
It is recommended that an additional “Emergency Stop” switch
is installed.
The pump must be installed so that contact with live parts is
impossible.
Installation position
Foreign matter protection