KNF NF 100 User manual

KNF Flodos BA_NF100_EN_10_067676.docx
Translation of original Operating and Installation Instructions Keep for future reference!
DIAPHRAGM LIQUID PUMP
NF 100, NF 1.100, NFB 100
Operating and
Installation
Instructions
Read and observe these
Operating and Installation
Instructions!
An additional letter prefixing
the NF model code is a coun-
try-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 ..................................................... 12
7. Operation ................................................................................ 20
8. Servicing ................................................................................. 25
9. Troubleshooting ...................................................................... 29
10. Spare parts and accessories .................................................. 31
11. Return of the pump ................................................................. 32
KNF Flodos AG
Wassermatte 2
6210 Sursee, Switzerland
Tel [phone]
Fax [phone]
www.knf.com
[e-mail]
NF 100 KP .51 .27 DC 12V
AA / DC / DCB / DCB
-
4
.51 / - [Ch. 2]
KP / KT / TT / FT [Ch. 4]
NF / UNF / JNF / NFB / UNFB
Supply voltage [Ch. 4]
100 / 1.100
- / PMLxxxx / PLxxxx [Ch. 1]
.27 / - [Ch. 5]

Diaphragm liquid pump NF 100 About this document
KNF Flodos BA_NF100_EN_10_067676.docx
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1. About this document
1.1. Use of the Operating and Installation Instruc-
tions
The Operating and Installation Instructions are part of the pump.
 Forward the Operating and Installation Instructions to any
subsequent owners of the pump.
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 (e.g. "Warn-
ing") indicates the level of danger.
 Here you will see actions for
avoiding the danger
and potential consequences.
Danger levels
Signal word Meaning Consequences if not observed
DANGER warns of immedi-
ate danger
Consequences are death or
serious injury and/or serious
property damage.
WARNING warns of potential
danger
Death or serious injury and/or
serious damage to property are
possible.
CAUTION warns of a poten-
tially dangerous
situation
Minor injury or damage to prop-
erty are possible.
Tab. 1
Other information and symbols
 This indicates a required activity (step).
This indicates the first step of a required activity. Additional
consecutively numbered steps follow.
This symbol indicates important information.
Project pumps

Diaphragm liquid pump NF 100 Use
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2. Use
2.1. Intended 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.
Only completely installed pumps may be taken into service.
Before transferring or metering a medium, check whether the
medium can be transferred danger-free 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 transferred medium should not contain particles as these can
prevent the pump from working correctly. If this cannot be guaran-
teed, 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 toxico-
logical tests. In order to ensure that the food grade quality is main-
tained, 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 100 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
that they can be cleaned. The responsibility for cleaning there-
fore lies with the user. While the NSF/ANSI 169 standard regu-
lates 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
DANGER
The pumps must not be operated in an explosive
atmosphere.
For special modifications outside the standard technical specifica-
tions, please contact your KNF technical adviser (see last page for
telephone number).
Risk of explosion

Diaphragm liquid pump NF 100 Safety
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3. Safety
Observe the safety precautions in Chapters
6. Installation and connection and 7. Operation.
The pumps are built according to the generally recognised rules of
technology and in accordance with the pertinent occupational
safety and accident prevention regulations. Nevertheless, dangers
may occur during their use which may 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.
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 Oper-
ating 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.
When transferring dangerous media, observe the safety regula-
tions for handling such 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 regula-
tions. 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.
Dispose of end-of-life equipment in an environmentally
friendly manner. 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 100 Safety
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The pumps comply with the fundamental requirements of Directive
2011/65/EU (RoHS2).
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 conforms to the provisions of the Machinery Directive
2006/42/EC. The essential requirements of Annex I of Directive
2006/42/EC (general principles) are applied and observed.
The following harmonised standards are met:
NF 100 AA / NF 1.100 AA
 EN 55014 - 1
NF 100 DC / NF 1.100 DC
 EN 55014 - 1
NF 100 DCB / NF 1.100 DCB1)
 EN 55011
 EN 55022
 EN 61000-4-3
NFB 100 DCB-41)
 EN 55011
 EN 55022
 EN 61000-4-3
1) In order to comply with the specified standards, the pump must be
connected as described in Chapter 6.2.
All repairs to the pump(s) must be carried out by the relevant KNF
Customer Service team.
Only use genuine parts from KNF for servicing work.
EU directives/standards
Customer service and
repairs

Diaphragm liquid pump NF 100 Technical data
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4. Technical data
Pump materials
The pump type KP / KP.51 stands for:
Assembly Material1)
Pump head* PP
Valve plate EPDM
Diaphragm PTFE-coated
Resonating diaphragm PTFE
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-coated
Resonating diaphragm PTFE
Diaphragm. 27 FFKM / FKM
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-coated
Resonating diaphragm PTFE
Diaphragm. 27 FFKM / FKM
Tab. 4 1) according to DIN ISO 1629 and 1043.1
The pump type FT stands for:
Assembly Material1)
Pump head* PTFE
Valve plate FFKM
Diaphragm PTFE-coated
Resonating diaphragm PTFE
Tab. 5 1) according to DIN ISO 1629 and 1043.1
* The pump head (Fig. 1) comprises a connecting plate and an intermedi-
ate plate

Diaphragm liquid pump NF 100 Technical data
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Hydraulic ratings
Parameter Value
Flow rate NF 100 [l/min] 1), 2)  1.2
Flow rate NF 1.100 [l/min] 1), 2)  1.3
Flow rate NFB 100 [l/min] 1), 2)  2 x 1.3
Max. permissible pressure NF 100, NFB 100 [bar g] 1
Max. permissible pressure NF 1.100 [bar g] 6 3)
Suction head [mWG] 3
Tab. 6
1) Measured with water at 20 °C / at atmospheric pressure
2) Flow rates may vary from the values shown, depending on fluid viscosi-
ty, pump head material and the hoses / hose connectors used.
3) for DCB and AA version 4 barg
Hydraulic connections
Parameter Value
NF 100 / NF 1.100 / NFB 100 G 1/8"
UNF 100 / UNF 1.100 / UNFB 100 NPT 1/8"
Recommended hose size ID [mm] 8
Tab. 7
Specifications NF 100 AA
Motor voltage 230V / 50Hz
Power consumption [W] 86
Max. I load [A] 0.36
Max. permissible current
consumption [A] 0.50
Protection class [-] IP 54
Weight1) [g] 2430
Tab. 8
Specifications NF 100 DC
Motor voltage 12V / 24V
Power consumption [W] 9.6 / 8.4
Max. I load [A] 0.8 / 0.35
Max. permissible current
consumption [A] 2.2 / 1.0
Protection class [-] IP 50
Weight1) [g] 600
Tab. 9
Specifications NF 100 DCB
Motor voltage 12V / 24V
Power consumption [W] 11 / 11
Max. I load [A] 0.67 / 0.37
Max. permissible current
consumption [A] 0.93 / 0.46
Protection class [-] IP 30
Weight1) [g] 480
Tab. 10

Diaphragm liquid pump NF 100 Technical data
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Specifications NF 1.100 AA
Motor voltage 230V / 50Hz
Power consumption [W] 86
Max. I load [A] 0.36
Max. permissible current
consumption [A] 0.50
Protection class [-] IP 54
Weight1) [g] 2450
Tab. 11
Specifications NF 1.100 DC
Motor voltage 12V / 24V
Power consumption [W] 33 / 34
Max. I load [A] 1.3 / 0.5
Max. permissible current
consumption [A] 2.8 / 1.0
Protection class [-] IP 50
Weight1) [g] 720
Tab. 12
Specifications NF 1.100 DCB
Motor voltage 12V / 24V
Power consumption [W] 18 / 18
Max. I load [A] 1.29 / 0.75
Max. permissible current
consumption [A] 1.5 / 0.75
Protection class [-] IP 30
Weight1) [g] 500
Tab. 13
Specifications NFB 100 DCB-4
Motor voltage 12V / 24V
Power consumption [W] 15 / 15
Max. I load [A] 1.25 / 0.63
Max. permissible current
consumption [A] 1.5 / 0.75
Protection class [-] IP 30
Weight1) [g] 640
Tab. 14
1) The weight may differ slightly from the stated value, depending on the
version.
Electrostatic sensitive components (ESD)
Other parameters
Parameter Value
Permissible
ambient temperature range (°C)
+ 5 to + 40
Permissible media temperature range (°C) + 5 to + 80
Permissible kinematic viscosity of medium [cSt] ≤ 150
Tab. 15

Diaphragm liquid pump NF 100 Assembly and function
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5. Assembly and function
1 Outlet
2 Inlet
3 Connecting plate
4 Motor
5 Leads
6 Head plate
7 Intermediate plate
Fig. 1: Diaphragm liquid pump NF 100
1 Outlet valve
2 Inlet valve
3 Working chamber
4 Diaphragm
5 Eccentric
6 Connecting rod
7 Pump drive
Fig. 2: Operating principle
The diaphragm liquid pumps are based on reciprocating displace-
ment pump technology. The elastic diaphragm (4) is moved up and
down by the eccentric (5) and the connecting rod (6). In the down-
ward stroke it aspirates the medium to be transferred via the inlet
valve (2). In the upward stroke, the diaphragm pushes the medium
out of the pump head via the outlet valve (1). The diaphragm
hermetically seals off the working chamber (3) from the pump drive
(7).
NF 100 version (fixed flow rate)
This pump type represents this product in its simplest form and
transfers media at the fixed flow rate.
NF 100.27 version (fixed flow rate with overpressure limiting)
If the diaphragm liquid pump is operating against a closed system,
the delivery pressure quickly exceeds the maximum permissible
value. To prevent this from happening, an overflow valve is inte-
grated in the top part of the pump head. If the pressure exceeds
the adjustable limit range (min. 1.5 to max. 6.5 barg), the valve
opens and the liquid circulates from the pressure side to the suc-
tion side via an internal bypass system. This prevents any further
pressure rise.

Diaphragm liquid pump NF 100 Assembly and function
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NFB 100 version (double-headed pump with fixed flow rate)
This pump type has two NF100 pump heads that can be operated
individually or together (see Chapter 6.3.2).

Diaphragm liquid pump NF 100 Installation and connection
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6. Installation and connection
Only install the pumps under the operating parameters and condi-
tions described in Chapter 4, Technical data.
Observe the safety precautions (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 9)
Fig. 3: Mounting dimensions NF 100 AA
Fig. 4: Mounting dimensions NF 1.100 AA
Mounting dimensions

Diaphragm liquid pump NF 100 Installation and connection
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Fig. 5: Mounting dimensions NF 100 DC
Fig. 6: Mounting dimensions NF 1.100 DC
Fig. 7: Mounting dimensions NF 100 DCB

Diaphragm liquid pump NF 100 Installation and connection
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Fig. 8: Mounting dimensions NF 1.100 DCB
Fig. 9: Mounting dimensions NFB 100 DCB-4
 For pumps with fan: When installing the pump, make sure that
the motor’s fan can draw in an adequate amount of cooling air.
 Make sure that the installation location is dry and the pump is
protected against water in the form of rain, spray, splashes and
drips.
 Protect the pump against dust.
 Protect the pump against vibration and impact.
 Generally speaking, the pump can be installed in any position.
The venting and accuracy of one-headed pumps is optimal if
installed as shown in the illustration (Fig. 10).
Cooling air supply
Installation location
Installation
position
Fig. 10: optimum installation
position for one-headed pumps:
vertical

Diaphragm liquid pump NF 100 Installation and connection
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 KNF recommends mechanically decoupling the pump from the
piping system. This can be achieved with flexible hoses or
pipes, for example. This prevents any oscillations of the pump
being transferred to the system.
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 pene-
trate the motor (see protection class).
Decoupling
Contact and foreign-object
protections

Diaphragm liquid pump NF 100 Installation and connection
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6.2. Electrical connection
For pumps with alternating current motors:
DANGER
Risk of electric shock, danger of death

Only have the pump connected by an authorized
specialist.
 Only have the pump connected when the power
supply is disconnected.
For pumps with direct current motors:
 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
norms, directives, regulations and technical standards must be
observed.
Connecting the pump
Make sure that the power supply data match the data on the
motor's type plate. The current consumption can be found on
the type plate.
Connect the motor cables. For electrical data see Chapter 4.
Note the proper polarity.
For DC motors:
red motor cable: +
black / blue motor cable: -
In the case of brushless DC motors:
CAUTION
Damage to the motor
Incorrect polarity may damage the electronics.
Leads DCB-4
Function lead signal name signal
+ voltage red +Vs 12 / 24 VDC
ground blue GND -
control voltage white Vctrl 2 .. 5 VDC
impulse generator green FG 6 pulses / rot.
Tab. 16
If using AC motors, the power supply must not deviate more
than a maximum of +/- 10 % from the specifications on the
type plate.

Diaphragm liquid pump NF 100 Installation and connection
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In order to ensure that emissions comply with the EN 55011 or EN
55022 emission standards, this pump type with a brushless DC
motor DCB must be fitted with a supplemental circuit. The supple-
mental circuit must be installed as close as possible to the motor.
The supplemental circuit must be installed according to the follow-
ing wiring diagram and its defined components in order to achieve
the required level of attenuation.
Optimum circuit Adequate circuit
Fig. 11: Supplemental circuit
Supplemental circuit
for brushless DCB motors
C1: Condenser
1 µF / UN > 30 V
C2: Condenser
1000 µF / UN > 30 V
L1: Choke coil
6 µH / IN > 1.5 A

Diaphragm liquid pump NF 100 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 permissible
operating pressure of the pump (see Chapter 4).
 Only use hoses that are sufficiently chemically resistant to the
liquids being transferred.
6.3.1. Connecting the pump
Arrows on the pump head indicate the flow direction.
Remove the protective caps.
Connect the suction and pressure lines.
Keep the suction line as short as possible in order to keep the
priming process as brief as possible.
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
and securely.
Check that the system is leak-tight.
Connected
components
Hoses

Diaphragm liquid pump NF 100 Installation and connection
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6.3.2. NFB 100 hose configuration
A double-headed pump is normally selected to reduce the
pressure surges caused by the alternation between suction
and exhaust in a diaphragm pump. In order to achieve this
effect, in addition to the pump configuration it is important to
configure the hoses correctly.
For low pulsation (pressure surges) in NFB pumps:
 Use pump in non-boxer (standard) version so that the heads
expel alternately.
 Configure pump head hoses in parallel (see Fig. 13).
 Keep hoses between pump and junction as short as possible.
 As little constriction as possible should be caused when using
connecting components. As a guide: min. inner diameter 5.5
mm.
Contact your KNF technical advisor if you have any questions
(see last page for telephone number).
Fig. 13: NFB 100 hose configuration for low pulsation
CAUTION
Changed technical characteristics
In the case of NFB versions, the use of .27 versions
may affect technical characteristics. (See Fig. 12,
Hose connection optionsb) and d) ).
Fig. 12: Hose connection options
for NFB versions
Fig. 14: no series connection in the
case of NFB versions
CAUTION
Series connection damages pump
If the two heads in the NFB versions are connected
in series, the pump will be damaged, and may leak.

Diaphragm liquid pump NF 100 Operation
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7. Operation
 Operate the pumps only under the operating parameters and
conditions described in Chapter 4, Technical data.
 Make sure that the pumps are being used properly (see Chap-
ter 2.1).
 Avoid improper use of the pumps (see Chapter 2.2).
 Observe the safety precautions (see Chapter 3).
 The pumps are components that are intended to be incorpo-
rated into another machine. Before putting them into service it
must be established that the machinery or systems in which
they are installed meet the relevant regulations.
CAUTION
Risk of burning
The drive heats up.
 Avoid contact with the pump drive.
 Avoid contact with flammable materials.
WARNING
Danger of bursting of the fluid system due to
overpressure.
The pump builds up pressure. A closed system can
cause the max. permitted operating pressure to be
exceeded. This can cause injuries or damage to the
pump and the system.
 Avoid operation against a closed system.
 Only use wetted parts that are rated for at least
the operating pressure of the pump.

If necessary, limit the maximum system pressure
by suitable measures.
Excessive pressure and the inherent dangers thereof can be
prevented by placing a bypass line with a pressure relief valve
between the
pressure and suction side of the pump. For further
information, contact your KNF technical adviser (for telephone
number, see last page).
CAUTION
Risk of burns when transferring hot media
 Do not touch the pump or the media transfer
system.
 Avoid contact with flammable materials.
 If the pump stops running, restore the system to normal at-
mospheric pressure.
For pumps with thermal switch or electronic overload protection:
Pump standstill