KNF NF 1.60 User manual

KNF Flodos AG BA_NF1.60_EN_05_161566.docx
Translation of Original Operating and Installation Instructions Keep for future reference!
DIAPHRAGM LIQUID PUMP
NF 1.60
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 ....................................................................................... 4
4. Technical data .......................................................................... 6
5. Assembly and function ............................................................. 8
6. Installation and connection ....................................................... 9
7. Operation ................................................................................ 12
8. Servicing ................................................................................. 14
9. Troubleshooting ...................................................................... 17
10. Return of the pump ................................................................. 19
KNF Flodos AG
Wassermatte 2
6210 Sursee, Switzerland
Tel. [phone]
Fax [phone]
www.knf.com
[e-mail]
NF 1.60 KP DC 24V
- / PMLxxxx / PLxxxx [Ch. 1]
NF / UNF
1.60
KP / KT [Ch. 4]
DC / DCB
-
B / DCB
-
4B
Supply voltage [Ch. 4]

Diaphragm-liquid pump NF 1.60 About this document
KNF Flodos AG BA_NF1.60_EN_05_161566.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
potentially
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 indicates important information.
Project pumps

Diaphragm-liquid pump NF 1.60 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.
Pumps must only be operated 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
pumped medium.
The temperature of the medium must lie within the permissible
temperature range (see Chapter 4).
The pumped medium 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.
2.2. Improper use
The pumps must not be operated in an explosive atmosphere.
For special modifications outside the standard technical
specifications please contact a KNF pump specialist.
Operating parameters and
conditions
Requirements for transferred
medium

Diaphragm-liquid pump NF 1.60 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.
When pumping dangerous media, observe the safety regulations
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
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 1.60 Safety
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The pumps are in accordance with the requirements of the
guidelines 2011/65/EU (ROHS2)
Under Machinery Directive 2006/42/EC, pumps are partly
completed machinery, and as such should not be regarded as
ready for use. The partly completed machinery must not be put into
service until the final machinery into which it is to be installed has
been declared to be in conformity with the provisions of this
Directive. 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 1.60 DCB-B / DCB-4B
 IEC/EN 61000-6-2
 IEC/EN 61000-6-3
NF 1.60 DC
 EN 55011
All repairs to the pump(s) must be carried out by the relevant KNF
Customer Service team.
Only use KNF original parts for all maintenance work.
EU directives/standards
Customer service and
repairs

Diaphragm-liquid pump NF 1.60 Technical data
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4. Technical data
Pump materials
The pump type KP stands for:
Assembly Material1)
Pump head * PP
Valves EPDM
O-rings EPDM
Diaphragm EPDM
Resonating diaphragm PTFE
Tab. 2 1) according to DIN ISO 1629 and 1043.1
The pump type KT stands for:
Assembly Material1)
Pump head * PP
Valves FFKM
O-ring FFKM
Diaphragm PTFE-coated
Resonating diaphragm PTFE
Tab. 3 1) according to DIN ISO 1629 and 1043.1
* Pump head (Fig. 1) comprises an intermediate plate and a connecting
plate
Hydraulic ratings
Parameter 3) Value
Flow rate [l/min] 1), 2)  0.65
Permissible pressure [bar g] 6
Suction head [mWG] 3
Max. inlet pressure [mWG] 3
Tab. 4
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 special modifications outside the standard technical specifications
please contact a KNF pump specialist.
Hydraulic connections
Parameter Value
Hose connection NF ID / AD [mm] 4 - 6
Hose connection UNF ID / AD [Inch] 1/8“ - 1/4“
Tab. 5

Diaphragm-liquid pump NF 1.60 Technical data
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Specifications NF 1.60 DCB-B / DCB-4B
Motor variant DCB-B DCB-B DCB-4B
Supply voltage [V] 12 24 10..26.4
Power consumption [W] 10.2 10.6 10.9
Max. I load [A] 0.85 0.44 1.1..0.39
Protection class [-] IP50
Weight1) [g] 260
Tab. 6
Specifications NF 1.60 DC
Motor voltage 12V 24V
Power consumption [W] 10
Max. I load [A] 0.8 0.4
Max. permissible current
consumption [A]
1.4 0.71
Protection class [-] IP00
Weight1) [g] 320
Tab. 7
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 the
media [cSt]
≤ 150
Tab. 8

Diaphragm-liquid pump NF 1.60 Assembly and function
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5. Assembly and function
Assembly
1 Outlet
2 Inlet
3 Head plate
4 Connecting plate
5 Intermediate plate
6 Motor
Fig. 1: Diaphragm liquid pump NF 1.60
1 Exhaust valve
2 Inlet valve
3 Working chamber
4 Diaphragm
5 Eccentric
6 Connecting rod
7 Pump 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 1.60 version (specified flow rate)
This pump type represents this product in its simplest form and
delivers media at the specified flow rate.

Diaphragm-liquid pump NF 1.60 Installation and connection
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6. Installation and connection
Only install 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 5)
Fig. 3: Mounting dimensions NF 1.60 DCB-B
Fig. 4: Mounting dimensions NF 1.60 DCB-4B
Fig. 5: Mounting dimensions NF 1.60 DC
Mounting dimensions

Diaphragm-liquid pump NF 1.60 Installation and connection
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 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.
 The pump can be mounted in any orientation.
 Generally speaking, the pump can be mounted in any
orientation. For maximum precision and rapid venting, install
pump as shown in the illustration (Fig. 6).
 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.
6.2. Electrical connection
For pumps with direct current motors:
 Pump should only be connected by an authorised specialist.
 Only connect the pump when the power supply is turned off.
 All electrical connection work must adhere to the pertinent
norms, directives, 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. For electrical data see 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 the electronics.
Installation location
Mounting orientation
Fig. 6: Optimal mounting
orientation
Decoupling

Diaphragm-liquid pump NF 1.60 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 sufficiently chemically resistant to the
liquids being pumped.
Connected
components
Hoses

Diaphragm-liquid pump NF 1.60 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 Chapter
2.1).
 Improper use of the pumps must be prevented (see Chapter
2.2).
 Observe the safety notes (see Chapter 3).
 Pumps are components intended to be incorporated into
another machine. Ensure that the machinery/equipment in
which the pumps are installed complies with the pertinent
regulations before putting them into service.
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 pressures and the dangers thus caused 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 specialist
(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.
Pump standstill

Diaphragm-liquid pump NF 1.60 Operation
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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
Duty cycle / short cycle 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 must also be done after a short power cut.
For more specific information contact the KNF specialists.
Turning the pump off
 KNF recommends: if pumping aggressive liquids, the pump
should be rinsed thoroughly prior to switch off (see Chapter
8.2.1), as this will help to lengthen the service life of the
diaphragm.
 Restore the system to normal atmospheric pressure (release
hydraulic pressure in pump).
Flow rate NF 1.60
Fig. 7: Flow rate of pumps NF 1.60 DCB-B / DCB-4B and NF 1.60 DC
Adjusting and controlling the
motor speed
Impulse operation

Diaphragm-liquid pump NF 1.60 Servicing
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8. Servicing
8.1. Servicing schedule
Component Servicing interval
Pump - Regular inspection for external
damage or leaks
Pump head - Clean if the flow rate decreases, the
pump does not work or no vacuum
is created (Chapter 8.2)
Diaphragm, valve
plates and seals
- Change as soon as pumping
capacity decreases, preferably
sooner
Tab. 9
8.2. Cleaning
WARNING
Health hazard due to dangerous substances in the
pump
Depending on the medium pumped, risk of caustic
burns or poisoning.
 Wear protective clothing if necessary, e.g.
protective gloves.
 Rinse the pump with a neutral liquid and pump
empty.
8.2.1. Flushing the pump
 If pumping aggressive media, KNF recommends flushing the
pump with a neutral fluid under atmospheric conditions for a
few minutes before switching off, to extend the service life of
valves and diaphragm.
8.2.2. Cleaning the pump
 Where possible, wipe the components with a dry cloth. Do not
use cleaning solvents as these may corrode plastic parts.
 If there is compressed air available, blow off components.
 Pump or drive must be switched off and disconnected from
mains.
 The pump must be free of any hazardous substances.
 Hoses must be disconnected from the pump head.
 We recommend replacing the diaphragm when the head
parts are removed.
Qty. Tool
1 T10 Torx screwdriver
Tab. 10
Information on procedure
Prior requirements
Tools

Diaphragm-liquid pump NF 1.60 Servicing
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Dismantling the pump head
1. Undo the 4 head screws (1) using a Torx T10 screwdriver.
2. Undo the union nut (5) and remove hose. Leave clamp ring (6)
on hose.
3. Remove seal (3) and resonating diaphragm (4) from the
connecting plate (7).
Removing the valves and seals
4. Remove both anchor valves (9) from the intermediate plate
(10) and the connecting plate (7).
5. Remove both anchor valve seals (8) from the connecting plate
(7).
6. Loosen the rolled diaphragm (11) by means of the connecting
plate (7). Make sure that no washers (12) fall into the housing.
We recommend replacing the rolled diaphragm (11).
Cleaning the parts
7. Clean the anchor valves (9), anchor valve seals (8), resonating
diaphragm (4) and associated seal (3) and rolled diaphragm
(11) with a cloth and then blow off with compressed air.
8. Use compressed air to blow out the intermediate plate (10),
connecting plate (7) and head plate (2).
Mounting the diaphragm
9. Check position of insert ring (13)
10. Screw rolled diaphragm (11) with washers (12) into the
connecting rod. Make sure that no washers (12) fall into the
housing.
11. Tighten rolled diaphragm carefully using the connecting plate
(7).
Mounting the valves and seals
12. Place the seals (8) and anchor valves (9) into the intermediate
plate (10) and the connecting plate (7).
Fig. 8
1 Head screws
2 Head plate
3 Seal
4 Resonating diaphragm
5 Union nuts
6 Clamp ring
7 Connecting plate
8 Seals
9 Anchor valves
10 Intermediate plate
11 Rolled diaphragm
12 Washers
13
Insert ring

Diaphragm-liquid pump NF 1.60 Servicing
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Mounting the pump head
13. Insert intermediate plate (10)
CAUTION: Make sure that the orientation is correct so that the
connections point in the right direction.
A pin and hole system prevents incorrect assembly.
14. Place the connecting plate (7) on top of the intermediate plate
(10).
15. Insert seal (3) and resonating diaphragm (4) in connecting
plate (7).
16. Place head plate (2) on connecting plate (7) and secure using
the 4 head screws (1).
17. Push hose with clamp ring (6) onto connecting plate (7) and
secure with union nut (5).
8.3. Replacing diaphragm, valves and seals
Same procedure as in Chapter 8.2, "Cleaning", except that the
rolled diaphragm (11), resonating diaphragm (4), anchor valves (9)
and seals (8) are replaced rather than cleaned.

Diaphragm-liquid pump NF 1.60 Troubleshooting
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9. Troubleshooting
Pump does not work
Cause Fault remedy
Pump not connected to mains
power supply
 Connect pump to mains supply
Power supply is not switched on  Switch on power supply
Thermal switch or pump
electronics have tripped
 Disconnect pump from mains power supply
 Allow pump to cool
 Identify and eliminate cause of overheating/overload
Connections or pipes are
blocked
 Check pipes and connections
 Remove blockage
External valve is closed or filter
is blocked
 Check external valves and filters
Diaphragm, valve plates or
seals are worn out
 Replace diaphragm, valve plates and seals
(see Chapter 8.3)
Tab. 11
Pump is not priming
Cause Fault remedy
Suction side of pump not
connected
 Connect the suction side of the pump
Liquid in the priming container is
too low
 Fill priming container
Hose connections are not leak-
tight
 Secure transition joints between hose and connections with
clamps or other clamping elements
System valve is closed or filter
is blocked
 Open the system valve
 Clean filter
Pump head is filled with gas.
The system is unable to handle
the pressure on the pressure
side.
 Reduce pressure on pressure side
Particles in the pump  Clean the pump head (see Chapter 8.2)
The pump parts are not
resistant to the medium to be
pumped
 Replace the pump head with a compatible version
Incorrect interchange of outlet
and inlet line connections
 Remove outlet and inlet lines and re-connect correctly
Tab. 12

Diaphragm-liquid pump NF 1.60 Troubleshooting
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Flow rate, suction head or pressure head is too low
The pump does not achieve the performance stated in the Technical Data or on the data sheet.
Cause Fault remedy
Components in the system
connected to the suction and
pressure sides, such as hoses,
valves or filters, are causing too
much resistance
 Modify installation, check cross-sections of components
Hose connections are not leak-
tight
 Secure transition joints between hose and hose connections
with clamps or other clamping elements
Particles in the pump  Clean the pump head, install suction-side filter if required
(see Chapter 8.2)
Viscosity of the pumped
medium is too high
 Contact KNF
Incorrect interchange of outlet
and inlet line connections
 Remove outlet and inlet lines and re-connect correctly
The pump parts are not
resistant to the medium to be
pumped
 Replace the pump head with a compatible version
Tab. 13
Fault cannot be rectified
If you are unable to identify any of the above causes, please send
the pump to KNF customer services (see address on last page).
1. Flush the pump to clear the pump head of any hazardous or
aggressive fluids (see Chapter 8.2.1).
2. Dismantle the pump.
3. Clean the pump (see Chapter 8.2.2).
4. Send the pump, with completed decontamination declaration
(see Chapter 10), to KNF customer services stating the nature
of the pumped medium.

Diaphragm-liquid pump NF 1.60 Return of the pump
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10. Return of the pump
KNF undertakes to repair the pump only under the condition
that the customer provides a certificate of the pumped medium
and cleaning of the pump. For this purpose, please follow the
instructions on www.knf.com/repairs.
Please contact your KNF sales representative directly if you
need additional support for your return service.

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