KNF NF 30 User manual

KNF Flodos AG BA_NF30_EN_05_069206.docx
Translated from the Original Operating and Installation Instructions Keep for future reference!
DIAPHRAGM LIQUID PUMP
NF 30, NFB 30
Operating and
Installation
Instructions
Read and observe these
operating and installation
instructions!
An additional letter prefixing
the NF model code is a
country-specific designation,
with no technical relevance.
Contents Page
1. About this document................................................................. 2
2. Use........................................................................................... 3
3. Safety ....................................................................................... 5
4. Technical data.......................................................................... 7
5. Assembly and function ........................................................... 10
6. Installation and connection..................................................... 11
7. Operation................................................................................ 18
8. Servicing................................................................................. 21
9. Troubleshooting...................................................................... 25
10. Decontamination declaration.................................................. 27
KNF Flodos AG
Wassermatte 2
6210 Sursee, Switzerland
Tel. [phone]
Fax [phone]
www.knf-flodos.ch
[e-mail]
NF 30 KP .51 .27 DC 12V
E / DC / DCB-B / DCB-4B
.51 / - [Ch. 2]
KP / KT / TT / FT [Ch. 4]
NF / JNF / NFB
Supply voltage [Ch. 4]
30
- / PMLxxxx / PLxxxx [Ch. 1]
.27 / - [Ch. 5]

Diaphragm liquid pump NF 30, NFB 30 About this document
KNF Flodos AG BA_NF30_EN_05_069206.docx
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1. About this document
1.1. Use of the operating and installation
instructions
The operating and installation instructions are part of the pump.
➔Pass on the operating and installation instructions to the next
owner.
Customer-specific project pumps (pump models which begin with
"PL" or "PML") may differ from the operating and installation
instructions.
➔In the case of project pumps, take note of any additionally
agreed specifications.
1.2. Symbols and markings
Warning
WARNING
This symbol indicates a potential danger.
It also indicates the possible consequences of failure
to observe the warning. The signal word (i.e
"Warning") indicates the level of danger.
➔This specifies measures for avoiding the danger
and the consequences of failure to implement
these measures.
Danger levels
Signal word
Meaning
Consequences if not observed
DANGER
warns of
immediate
danger
Death or serious injuries and/or
serious material damage are the
consequence.
WARNING
warns of possible
danger
Death or serious injuries and/or
serious material damage are
possible.
CAUTION
warns of a
possibly
dangerous
situation
Minor injuries or material
damage are possible.
Tab. 1
Other information and symbols
➔This indicates an activity (step) that needs to be carried out.
1. This indicates the first step of an activity to be carried out.
Any additional steps required are consecutively numbered.
This symbol refers to important information.
Project pumps

Diaphragm liquid pump NF 30, NFB 30 Use
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2. Use
2.1. Proper use
The pumps are intended for transferring and metering liquids.
Owner's responsibility
Only install and operate the pumps under the operating parameters
and conditions described in Chapter 4, Technical data.
The pumps may be operated only when fully assembled.
Before transferring or metering a medium, check that it can be
transferred without risk in the specific application case.
Before using a medium, check the compatibility of the materials of
the pump head, pump housing, diaphragm and valves with the
medium.
The temperature of the medium must lie within the permissible
temperature range (see Chapter 4).
The media should not contain particles as these can prevent the
pump from working correctly. If this cannot be guaranteed, a filter
< 100 m with sufficiently large filter area must be used upstream
of the pump.
The .51 versions of our diaphragm liquid pump range have been
certified by NSF according to the standard NSF/ANSI 169 and are
therefore suitable for use with foodstuffs without any restrictions.
All materials used have been checked through a series of
toxicological tests. In order to ensure that the food grade quality is
maintained, NSF will carry out a yearly audit checking our certified
products.
Only the pumps marked with ".51" are NSF-certified and contain a
defined material combination that also has a FDA certificate of
conformity.
NSF: National Sanitary Foundation
FDA: Food and Drug Administration
ANSI: American National Standard Institute
* Pumps with other customer-specific certified material combinations are
available on request.
Operating parameters and
conditions
Requirements for
transferred medium
.51* version –version with
food grade approval

Diaphragm liquid pump NF 30, NFB 30 Use
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➔All certified diaphragm liquid pumps are clearly marked with
“.51” in the type designation along with the NSF-logo on the
type plate. If either or both of these markings are missing, the
pump is not certified.
➔Because the cleaning requirements of the diaphragm liquid
pumps depend on the application, KNF is unable to guarantee
cleaning options. The responsibility for cleaning the pump(s)
therefore lies with the user. While the NSF/ANSI 169 standard
regulates OEM products, it does not define cleaning methods
for specific OEM products.
➔All parts in contact with the medium can be replaced as spare
parts without losing the certification. Component parts cannot
be traded as certified parts. When replacing parts/assemblies
only use original KNF parts.
2.2. Improper use
The pumps may not be operated in an explosive atmosphere.
For special modifications outside the standard technical
specifications, please contact a KNF pump specialist.

Diaphragm liquid pump NF 30, NFB 30 Safety
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3. Safety
Note the safety precautions in Chapters 6. Installation and
connection, and 7. Operation.
The pumps are built according to the generally recognized rules of
technology and in accordance with the pertinent 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 in perfect working order and in accordance
with their intended use. Always ensure adherence to the operating
and installation instructions and work in a safety-conscious
manner.
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 all personnel have read and understood the
operating and installation instructions, and in particular the "Safety"
chapter.
Always ensure adherence to all pertinent accident prevention and
safety regulations when working on and operating the pump.
Always observe the safety regulations when handling dangerous
media.
Always ensure adherence to all information stickers on the pumps,
such as flow direction arrows and type plates, and keep stickers in
legible condition.
All replacement parts should be properly stored and disposed of in
accordance with the applicable environmental protection
regulations. Ensure adherence to the pertinent national and
international regulations. This especially applies to parts
contaminated with toxic substances.
Dispose of all packaging in an environmentally appropriate
manner. The packaging materials are recyclable.
Ensure that the pump is disposed of in an environmentally
appropriate manner at the end of its useful life. Use
appropriate waste collection systems for the disposal of
end-of-life equipment. Used pumps contain valuable
recyclable materials.
Personnel
Working in a safety-
conscious manner
Handling dangerous media
Notes
Environmental protection
Disposal

Diaphragm liquid pump NF 30, NFB 30 Safety
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The pumps are in accordance with the requirements of the
guidelines 2011/65/EU (ROHS2)
The pumps conform to EU safety requirements and guidelines for
Electromagnetic interference 2004/108/EC.
As defined in the Machinery Directive 2006/42/EC, pumps are
partly completed machines and not ready-for-use, the overall
equipment must be made to fully conform with the requirements of
the Directive before being brought into service. Always ensure
implementation and enforcement of the basic requirements of the
Machinery Directive 2006/42/EC according to Appendix I (General
Principles).
The following harmonised standards are met:
NF 30 DC
▪EN 55014-1
NF 30 DCB-B / DCB-4B
▪IEC/EN 61000-6-2
▪IEC/EN 61000-6-3
NFB 30 DCB-B / DCB-4B
▪IEC/EN 61000-6-2
▪IEC/EN 61000-6-3
NF 30 E
▪EN 55014-1
All repairs to the pump(s) must be carried out by the relevant KNF
Customer Service team.
EU directives/standards
Customer service and
repairs

Diaphragm liquid pump NF 30, NFB 30 Technical data
KNF Flodos AG BA_NF30_EN_05_069206.docx
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4. Technical data
Pump materials
The pump type KP stands for:
Assembly
Material1)
Pump head *
PP
Valve plate
EPDM
Diaphragm
EPDM
Diaphragm .27
EPDM
Tab. 2 1) according to DIN ISO 1629 and 1043.1
The pump type KT stands for:
Assembly
Material1)
Pump head *
PP
Valve plate
FFKM
Diaphragm
PTFE
Diaphragm .27
FFKM
Tab. 3 1) according to DIN ISO 1629 and 1043.1
The pump type TT stands for:
Assembly
Material1)
Pump head *
PVDF
Valve plate
FFKM
Diaphragm
PTFE
Diaphragm .27
FFKM
Tab. 4
The pump type FT stands for:
Assembly
Material1)
Pump head *
PTFE
Valve plate
FFKM
Diaphragm
PTFE
Tab. 5 1) according to DIN ISO 1629 and 1043
* The pump head (Fig. 1) comprises a connecting plate and an
intermediate plate

Diaphragm liquid pump NF 30, NFB 30 Technical data
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Hydraulic ratings
Parameter
Value
Flow rate NF 30 [l/min] 1), 2)
0.3
Flow rate NFB 30 [l/min] 1), 2)
2 x 0.3
Permitted pressure [bar above
atmospheric]
1
Suction head [mWG]3)
6
Tab. 6
1) Measured with water at 20°C / at atmospheric pressure
2) Flow rates may vary from the values shown depending on fluid
viscosity, pump head material and the hoses / hose connectors used.
3) For version with PTFE diaphragm max. 5 mWG
Hydraulic connections
Parameter
Value
Recommended hose size ID [mm]
4
Tab. 7
Specifications NF 30 DC
Motor voltage
12V
24V
Power consumption [W]
8.3
8.6
Max. current at max. load [A]
0.69
0.36
Protection class [-]
IP 00
Weight1) [g]
180
Tab. 8
Specifications NF 30 DCB-B / DCB-4B
Motor variant
DCB-B
DCB-B
DCB-4B
Supply voltage [V]
12
24
10..26.4
Power consumption [W]
7
7.7
7.4
Max. current at max.
load [A]
0.58
0.32
0.68..0.28
Protection class [-]
IP 30
Weight1) [g]
210
Tab. 9
Specifications NFB 30 DCB-B / DCB-4B
Motor variant
DCB-B
DCB-B
DCB-4B
Supply voltage [V]
12
24
10..26.4
Power consumption [W]
10.9
11.5
12
Max. current at max.
load [A]
0.91
0.48
1.2..0.48
Protection class [-]
IP 30
Weight1) [g]
250
Tab. 10

Diaphragm liquid pump NF 30, NFB 30 Technical data
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Specifications 30 E
Motor voltage
230V/50Hz
Power consumption [W]
26
Max. current at max. load [A]
0.21
Max. motor current [A]
0.22
Protection class [-]
IP 00
Weight1) [g]
570
Tab. 11
1) The weight may differ slightly from the stated value, depending on the
version.
Electrostatic sensitive components (ESD)
Various parameters
Parameter
Value
Permissible ambient temperature range
[°C]
+ 5 to + 40
Permissible media temperature range [°C]
+ 5 to + 80
Permissible kinematic viscosity of the
media [cSt]
≤150
Tab. 12

Diaphragm liquid pump NF 30, NFB 30 Assembly and function
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5. Assembly and function
Assembly
1Outlet
2Inlet
3Head plate
4Connecting plate
5 Intermediate plate
6 Motor
Fig. 1 Diaphragm liquid pump
1Exhaust valve
2Inlet valve
3Working chamber
4Diaphragm
5Eccentric
6Connecting rod
7Pump drive
Fig. 2: Operating principle
Diaphragm liquid pumps are based on reciprocating displacement
pump technology. An elastic diaphragm (4) is moved up and down
by the eccentric (5) and the connecting rod (6). During the down
stroke, the diaphragm sucks in the medium through the inlet valve
(2). During the up stroke, it forces medium out of the pump head
through the exhaust valve (1). The diaphragm hermetically seals
off the working chamber (3) from the pump drive (7).
NF 30 version (specified flow rate)
This pump type represents this product in its simplest form and
delivers media at the specified flow rate.
NF 30 .27 version (specified flow rate with overpressure
limiting)
If the diaphragm liquid pump is operating against a closed system,
the delivery pressure quickly exceeds the maximum permissible
values. To prevent this happening, an overpressure relief is
integrated in the top part of the pump head. If the pressure
exceeds the variable limit range (min. 0.5 to max. 1.0 barg), the
valve opens and the liquid circulates from the pressure side to the
suction side via an internal bypass system. This prevents any
further rise in pressure.

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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6. Installation and connection
Only install and operate the pumps under the operating parameters
and conditions described in Chapter 4, Technical data.
Observe the safety notes (see Chapter 3).
6.1. Installation
➔Before installation, store the pump at the installation location to
bring it up to ambient temperature.
➔Mounting dimensions (see Fig. 3 to 12)
Fig. 3: Mounting dimensions NF 30 DC
Fig. 4: Mounting dimensions NF 30.27 DC
Mounting dimensions

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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Fig. 5: Mounting dimensions NF 30 DCB-B
Fig. 6: Mounting dimensions NF 30 DCB-4B
Fig. 7: Mounting dimensions NF 30.27 DCB-B

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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Fig. 8: Mounting dimensions NF 30.27 DCB-4B
Fig. 9: Mounting dimensions NF 30 E
Fig. 10: Mounting dimensions NF 30.27 E

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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Fig. 11: Mounting dimensions NFB 30 DCB-B
Fig. 12: Mounting dimensions NFB 30 DCB-4B

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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➔For pumps with fan: mount the pump so that the fan of the
motor can suck in sufficient cooling air.
➔Make sure that the installation location is dry and the pump is
protected against rain, splashes, hose and drip water.
➔Protect the pump against dust.
➔Protect the pump against vibrations and jolts.
➔Generally speaking, the pump can be mounted in any
orientation. The venting and accuracy of the pump is optimal if
installed as shown in the illustration (Fig. 12).
➔KNF recommends mechanically decoupling the pump from the
pipework system, e.g. by using flexible hoses or pipes. This
prevents any oscillations of the pump being transferred to the
system.
Cooling air supply
Installation location
Mounting orientation
Fig. 13: Optimal mounting
orientation / horizontal
Decoupling

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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For pumps with alternating current motors:
WARNING
Danger of injury during operation
➔Take protective measures against touching parts
which are energised (live), such as electrical
connections or windings.
➔Take protective measures against touching
moving parts (e.g. fan).
Danger of damaging the pump during operation
➔Take protective measures to ensure that no
foreign objects can get into the pump or
penetrate the motor (see protection class).
6.2. Electrical connection
For pumps with alternating current motors:
DANGER
Risk of electric shock, danger of death
➔Pump should only be connected by a specialist.
➔Only connect the pump when the power supply
is turned off.
For pumps with direct current motors:
➔Pump should only be connected by a specialist.
➔Only connect the pump when the power supply is turned off.
➔All electrical connection work must adhere to the pertinent
guidelines, regulations and technical standards.
Connecting the pump
1. Make sure that the power supply data match the data on the
motor type plate. The current consumption can be found on the
type plate.
2. Connect the motor cables. Electrical data Chapter 4.
Always check polarity of cables.
For DC motors:
red motor lead: +
black motor lead: -
In the case of brushless DC motors:
incorrect polarity may damage to the electronics.
If using AC motors, the power supply must not deviate more
than a maximum of +/- 10 % from the specifications on the
type plate.
Touch and foreign object
protection

Diaphragm liquid pump NF 30, NFB 30 Installation and connection
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6.3. Hydraulic connection
➔Only connect components to the pump that are designed to
handle the hydraulic data of the pump (see Chapter 4,
Technical data).
➔Only use hoses that are suitable for the maximum operating
pressure of the pump (see Chapter 4).
➔Only use hoses that are chemically resistant to the liquids
being pumped.
6.3.1. Connecting the pump
Arrows on the pump head indicate the flow direction.
1. Remove the protective caps from the connections.
2. Connect the inlet and outlet lines.
Keep the inlet line as short as possible in order to keep the
priming process as short as possible.
3. If the pump is used to build up pressure make sure that all
transition joints between hose and pump are secure in order to
ensure that the hoses cannot come off.
Check that the hoses and transition joints are fitted correctly
4. and securely.
5. Check that the system is leak-tight.
CAUTION
In the case of NFB-versions, the use of .27 versions
may affect technical characteristics (see Fig. 14,
Hose connection options b) and d)).
Connected
components
Hoses
Fig. 14: Hose connection options
for NFB-versions

Diaphragm liquid pump NF 30, NFB 30 Operation
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7. Operation
➔The pumps should only be used under the operating
parameters/conditions described in Chapter 4, Technical data.
➔Ensure that the pumps are being used correctly (see Section
2.1).
➔Improper use of the pumps must be prevented (see Section
2.2).
➔Observe the safety notes (see Chapter 3).
➔Pumps are components intended to be incorporated into
another machine. The machine/equipment in which the pumps
are installed must be made to fully comply with the pertinent
regulations before being put into operation.
CAUTION
Risk of burning
The drive heats up.
➔Avoid contact with the drive.
➔Avoid contact with flammable materials.
Excessive pressures and its inherent dangers can be
prevented by using a bypass system with a pressure relief
valve between the pressure and suction side of the pump.
Further information is available from your KNF adviser
(Telephone number: see first page).
➔If the pump stops running, reduce the pressure in the system
until it is at normal atmospheric pressure.
For pumps with thermal switch or electronic overload protection:
WARNING
Risk of physical injury and damage to the pump due
to automatic start
If the pump overheats and the thermal switch /
electronics stops pump operation, the pumps will
restart automatically as soon as they have had time
to cool down.
➔Take steps to ensure that this cannot produce a
hazardous situation.
Switching the pumps on and off
The motor speed of the pump, and thus the flow rate, is adjustable
and can also be regulated to some extent.
For more details, see Chapter 4, Technical data.
Pump standstill
Adjusting and controlling the
motor speed

Diaphragm liquid pump NF 30, NFB 30 Operation
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Duty cycle / impulse operation
KNF pumps are designed for continuous operation.
Short start and stop cycles may adversely affect the service life of
the brushed motors.
If the pump is operated with short cycles in your application,
please contact a KNF pump specialist for further information
(Telephone number: see first page).
Turning the pump on
➔In order to guarantee that the pump can start every time it is
advisable to reduce the back pressure to an acceptable level.
This is also the case if there is a short power cut.
For more specific information contact the KNF specialist
(Telephone number: see first page).
Turning the pump off
➔KNF recommends: if pumping aggressive liquids, the pump
should be rinsed thoroughly prior to switch off (see Section
8.2.1), as this will help to lengthen the service life of the
diaphragm.
➔Ensure that the system is subject to normal atmospheric
pressure (release the hydraulic pressure).
Flow rate NF 30
Fig. 15: Flow rate of pumps NF 30 DC and NF 30.27 DC
Impulse operation

Diaphragm liquid pump NF 30, NFB 30 Operation
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Fig. 16: Flow rate of pumps NF 30 DCB-B / DCB-4B and
NF 30.27 DCB-B / DCB-4B
Fig. 17: Flow rate of pumps NF 30 E and NF 30.27 E
Flow rate NFB 30
Fig. 18: Flow rate of pump NFB 30 DCB-B / DCB-4B