KNF 316780-316783 05/19
OEM
NPK012
TRANSLATION OF ORIGINAL OPERATING AND
INSTALLATION INSTRUCTION
ENGLISCH
SWING PISTON
VACUUM PUMP
Note!
Before operating the pump and the accessories, please read the operating and installation instructions and
pay attention to the safety precautions!
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Phone +49-(0)7664/5909-0
Fax. 07664/5909-99
www.knf.com
Contents
1 About this document ......................................................... 3
2 Use ...................................................................................4
3 Safety................................................................................ 5
4 Technical data ..................................................................7
5 Design and function .......................................................... 9
6 Transport ........................................................................11
7 Installation and connection ............................................. 12
8 Operation ........................................................................ 18
9 Cleaning.......................................................................... 22
10 Troubleshooting .............................................................. 23
11 Accessories .................................................................... 25
12 Returns ...........................................................................26
Swing Piston vacuum pump NPK012 About this document
1 About this document
1.1 Using the operating and installation instructions
The operating and installation instructions are part of the pump.
à
Give the operating and installation instructions to the next owner.
à
Keep 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 instructions.
à
For project pumps, also observe the agreed specifications.
1.2 Symbols and markings
Warning notice
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
WARNING
word, e.g., warning, indicates the danger level.
à Measures for avoiding the danger and its
consequences are specified here.
Danger levels
Signal word Meaning Consequences if not
observed
DANGER warns of immediate
danger
WARNING warns of possible dan-
ger
CAUTION warns of a possibly
dangerous situation
Tab.1
Other notices and symbols
à
An activity to be carried out is specified here (a step).
1. The first step of an activity to be carried out is specified here.
This symbol indicates important information.
Death or serious injury
or serious damage will
result.
Death or serious injury
or serious damage are
possible.
Minor injuries or damage are possible.
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
3
Use Swing Piston vacuum pump NPK012
2 Use
2.1 Proper use
The pumps are intended exclusively for transferring gases and vapors.
Responsibility of the owner
Operating parameters and
conditions
Requirements for the transferred
medium
Only install and operate the pumps in accordance with the operating parameters and conditions described in Chapter 4 Technical data.
Protect compressors with a pressure relief device between the pressure
side of the compressor and the first shut-off valve.
Only fully assembled pumps may be operated.
Make sure that the installation location is dry and that the pump is protected against rain, splash, gushing and drip water as well as from other
contaminants.
The tightness of the connections between the pipes of the application and
the pump (or the connection of the pump) is to be checked at regular intervals. Leaky connections carry the risk of releasing dangerous gases and
vapors from the pump system.
Before transferring a medium, check whether the medium can be transferred danger-free in the specific application.
Before using a medium, check the compatibility of the media-contacting
components (see 4 Technical data) with the medium.
Risk of dangerous gas mixtures during pump operation if the sealing lip
breaks: Depending on the medium being transferred, breakage of the sealing lip can result in a dangerous mixture if the medium mixes with the air in
the compressor housing.
Only transfer gases that remain stable under the pressures and temperatures that arise in the pump.
2.2 Improper use
The pumps may not be operated in explosive atmospheres.
The pumps are not suitable for transferring:
§
Dusts
§
Liquids
§
Aerosols
§
Biological and microbiological substances
§
Fuel
§
Explosives and flammable material
§
Fibers
§
Oxidants
§
Food
Pumps that can produce both vacuum as well as overpressure may not be
used to simultaneously produce vacuum and operating pressure.
No operating pressure may be applied to the suction side of the pump.
4 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Safety
3 Safety
Observe the safety notices in chapters 7 Installation and connection
and 8.1 Operation.
The pumps are built in accordance with the generally recognized rules of
technology and the occupational safety and accident 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 aware of the dangers and in observation of the operating 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 mains, observe the corresponding safety rules.
Personnel Make sure that only trained and instructed personnel or specially trained
personnel work on the pumps. This applies, in particular, to assembly, connection and servicing work.
Make sure that the personnel have read and understood the operating and
installation instructions, particularly the chapter on safety.
Working in a safety conscious
manner
Working with hazardous media When transferring hazardous media, observe the safety regulations for the
Working with combustible media Note that the pumps are not designed to be explosion-proof.
Environmental protection Store and dispose of all replacement parts in accordance with environmen-
EU/EC directives/standards With respect to the Machinery Directive 2006/42/EC, the pumps are partly
Observe the regulations on accident prevention and safety during all work
on the pumps and during operation.
The pump heads heat up during operation; therefore avoid contact with
them.
Make certain that the pump is disconnected from mains and without
power.
Make sure that no dangers arise from flow when gas connections are
open, from noises or from hot, corrosive, dangerous and environmentally
hazardous gases.
Make sure that an EMC-compliant installation of the pump is ensured at all
times and that no dangerous situation can thereby arise.
handling of these media.
Make sure that the temperature of the medium is always sufficiently below
the ignition temperature of the medium so as to prevent ignition or explosion. This also applies for abnormal operating situations.
Note here that the temperature of the medium increases when the pump
compresses the medium.
Therefore, make sure 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 the
technical specifications (4 Technical data).
If applicable, also take into consideration external energy sources (e.g., radiation sources) that could add heat to the medium.
In case of doubt, contact KNF Customer Service.
tal regulations. Observe the respective national and international regulations. This applies in particular to parts that are contaminated with toxic
substances.
completed machinery and are, therefore, to be regarded as not ready for
use. Partly completed machinery may not be commissioned until it has
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5
Safety Swing Piston vacuum pump NPK012
been determined that the machine into which the partly completed machinery is to be installed complies with the provisions of the Machinery Directive 2006/42/EC. The following fundamental requirements of Annex I of Directive 2006/42/EC (general principles) are applied and observed:
§
General principles no. 1
§
No. 1.1.2. / 1.1.3. / 1.3.1. / 1.3.3. / 1.3.4. / 1.4.1. / 1.5.8. / 1.5.9. /
1.7.4. / 1.7.4.1. / 1.7.4.3.
As these partly completed machines are built-in devices, the mains connections and equipment for disconnecting and switching off the partly completed machinery as well as overcurrent and overload protection gear must
be considered when mounting.
Furthermore, protection against contact with moving and hot parts, if
present, must be provided during installation.
The pumps comply with Directive 2011/65/EC (RoHS2).
The following harmonized standards are satisfied:
§
DIN EN 50581
§
DIN EN 61000-6-2/3
Customer service and repairs The pumps are maintenance-free. KNF does, however, recommend peri-
odically inspecting the pumps for noticeable changes to noises and vibrations.
Only have repairs to the pumps performed by the responsible KNF Customer Service.
Housings with live components may only be opened by specialist personnel.
6 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Technical data
4 Technical data
Technical data
Pump materials
Assembly Material
Ribbed plate, cylinder PPS
Sealing lip PTFE compound
Valve plate FPM
Retainer plate Aluminum
Screw Galvanized steel
Tab.2
Pneumatic values
Parameter Value
NPK012PR
Max. permissible operating pressure
[bar rel*]
-Continuous operation
-Interm. operation
Ultimate vacuum [mbar abs.] 220 140
Flow rate at atm. pressure [l/min]** 12.0 ± 10% 13.5 ± 10%
Tab.3 *Bar rel related to 1013 hPa
**Liters in standard state (1013 hPa, 20°C)
Pneumatic connections
Pump type Value
NPK012 Hose connection ID 6
Tab.4
2.5
5.0
Value
NPK012VA
1.0
-
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7
Technical data Swing Piston vacuum pump NPK012
Electrical data
Parameter Value
NPK012
Voltage [V] 24
Frequency [Hz] -
Power P1 [W] 43
Max. current consumption [A] 1.8
Motor protection class IP 20
Max. permissible mains voltage fluc-
See operating instructions for motor
tuations
Tab.5
The pump is equipped with an overcurrent protection. If this safety
function is actuated, the pump is switched off and must be manually
reset:
à Disconnect pump from mains.
à Before switching back on, eliminate the cause of the error(s).
Weight
Pump type Weight [kg]
NPK012 approx. 0.6
Tab.6
Other parameters
Parameter Value
NPK012PR
Permissible ambient temperature
+ 5 to + 40
Value
NPK012VA
[°C]
Permissible media temperature [°C] + 5 to + 40
Max. surface temperature* [°C] + 150 + 120
Dimensions
See Chapter 7.1 Installing the pump
Fig. 3
Highest permissible relative air humidity of the environment
Maximum installation altitude [m
80% for temperatures to 31°C, decreasing linearly to 50% at 40°C.
2000
above sea level]
Protection class of pump IP 00
Starts against:
- Pressure [bar gauge]
- Vacuum [mbar abs.]
Tab.7 *Value measured at pump head
5.0
220
1.0
140
8 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Design and function
1
2
3
4
5 Design and function
Design
1 Pneumatic pump outlet
2 Pneumatic pump inlet
3 Motor
4 Pump head
Fig.1 Design NPK012
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
9
Design and function Swing Piston vacuum pump NPK012
Function of swing piston pump
1 Inlet valve
2 Outlet valve
3 Transfer chamber
4 Retainer plate
5 Sealing lip
6 Eccentric
7 Connecting rod
8 Compressor housing
Fig.2 Function principle of swing piston pump
Swing piston pumps transfer, compress and evacuate air.
The swing piston, consisting of retainer plate (4) and sealing lip (5), is moved
up and down by the eccentric (6) and the connecting rod (7). In the downwards stroke, the swing piston aspirates the gas to be transferred via the inlet
valve (1). In the upwards stroke, the swing piston presses the medium out of
the pump head via the outlet valve (2). The swing piston is sealed at the pump
housing by a sealing lip (5) and functions oil-free.
10 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Transport
6 Transport
General
Personal injury and/or property damage due to incorrect or improper transport of the pump
In the event of incorrect or improper transport, the
CAUTION
CAUTION
pump can fall down, be damaged or injure persons.
àUse suitable auxiliary means if necessary
(carrying strap, lifting gear, etc.).
àWhere appropriate, wear suitable personal
protective equipment (e.g., safety shoes,
safety gloves).
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.
à Where appropriate, wear suitable personal
protective equipment (e.g., safety shoes,
safety gloves).
à
Transport the pump in the original packaging to the installation location.
à
Store the original packaging of the pump (e.g., for later storage).
à
Inspect the pump for transport damage after receiving it.
à
Document any transport damage in writing.
à
Remove any transport safeguards on the pump prior to commissioning.
Parameter
Parameter Value
Storage temperature [°C] + 5 to + 40
Transport temperature [°C] - 10 to + 60
Permissible humidity (non-condensing) [%]
Tab.8 Transport parameters
Prior to commissioning, make sure that the pump has reached the
ambient temperature (4 Technical data).
30 to 85
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11
Installation and connection Swing Piston vacuum pump NPK012
7 Installation and connection
The pumps are only to be installed in accordance with the operating parameters and conditions described in Chapter 4 Technical data.
à
Observe safety notices (see Chapter 3 Safety).
7.1 Installing the pump
à
Before installing, store the pump at the installation location to allow it to
reach the ambient temperature.
Mounting dimensions
à
For mounting dimensions, see the following figures:
Fig.3 Mounting dimensions pump series NPK012
*Maximum screw-in depth
Cooling air supply
Danger of getting burned by hot surfaces
Hot surfaces could occur if the pump overheats.
à When installing the pump, make sure that
WARNING
Immediate environment of the
hot pump parts
12 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
à
During installation, make sure that no combustible or thermally deformable objects are positioned in the immediate environment of the
hot pump parts (head, motor).
sufficient cooling air infeed and discharge is
ensured.
Swing Piston vacuum pump NPK012 Installation and connection
Installation location
Protection against foreign
objects
à
Make sure that the installation location is dry and that the pump is protected against rain, splash, gushing and drip water as well as from
other contaminants.
à
Make sure that the installation location is accessible for maintenance
and service.
à
Make sure that the pump is securely attached to the intended fastening
holes.
à
Mount the pump at the highest point in the system to prevent condensate from collecting in the pump head.
à
Protect pump from dust.
à
Protect pump from vibration and impact.
à
Take protective measures against touching and foreign objects which
could enter the pump.
7.2 Electrical connection
Danger to life from electric shock
àOnly have the pump connected by an autho-
rized specialist.
DANGER
àOnly have the pump connected if the power
supply is disconnected.
à
When connecting to a power source, observe the applicable standards,
directives, regulations and technical standards.
à
Install a device for separating the pump motor from the electrical mains
in the electrical installation (in accordance with EN 60335-1).
à
Protect the pump motors in accordance with EN 60204-1 (overcurrent
protection, overload protection).
à
The motors may only be operated in an SELV circuit.
The control lines of the BLDC motor are only protected to a voltage
of up to 1.5 kV (cf. DIN EN 6100-4-2).
If higher ESD requirements are needed, measures are to be provided by the owner himself.
Refer to the pump type plate for the max. current consumption.
à
It is recommended that an additional emergency-off system be installed.
à
Mount the pumps in such a way that it is not possible to touch the electrically live parts (electrical connection).
The ground potential of the power supply, the interface(s) and the
pump housing are to be at the same potential. Compensating currents via the motor controller are to be prevented as they may result
in the destruction of the electronics. A sufficient potential equalization in accordance with EN 60479-1 is to be dimensioned.
Fastening the connection cables
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
à
Fasten the connection cables so that
– the cables do not come into contact with movable or hot parts.
– the cables cannot be worn or damaged on sharp corners or edges
– no tensile and pressure forces are exerted on the connection point
of the cables (strain relief)
13
Installation and connection Swing Piston vacuum pump NPK012
Connecting the pump
1. Compare the data of the supply voltage with the details on the motor
type plate. See the pump type plate for the maximum current consumption of the pump.
The supply voltage may deviate by maximum +10% or –10% from
the values on the type plate.
2. Establish the electrical connection to the pump.
Set the direction of rotation according to the arrow on the fan hood
(see 7.1 Installing the pump and operating instructions for the mo-
tor).
Control voltage may only be applied if the motor controller is supplied with an operating voltage. The motor controller may otherwise
be damaged.
Ensure the correct polarity (see designation on motor). With brushless three-phase motors (indicated by a B at the end of the type
designation), incorrect polarity will result in destruction of the electronics.
14 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Installation and connection
Connection diagram for motor controller
Motor
Rated voltage [V] 24
Voltage range [V] 9 – 26.4
Electrical connections
Leads connections
Function Wire lead color Signal name Size
+ Supply voltage Red U
+
AWG 26 / UL 3266
- Supply voltage (0 V) Black U- / GND AWG 26 / UL 3266
Input signal for speed control Blue U
Output signal for speed Green U
Input signal for remote ON/OFF White U
Input signal for direction of motor rotation Yellow U
Ctrl
Spd
Rmt
Rot
AWG 26 / UL 3266
AWG 26 / UL 3266
AWG 26 / UL 3266
AWG 26 / UL 3266
Input signal for speed control UCtrl
PWM frequency range [kHz] 20
[10 … 30]
Input level "high" [V] 5
[2.5…5.5]
Input level "low" [V] 0
[0…0.8]
Duty cycle range [%] PR VA
30… 0 50…0
Pulse duration description:
Min. → min. pump output
Max. → max. pump output
[%] PR VA
30
0
50
0
Input impedance @ 1 kHz [kΩ] ≥ 10
Output signal for speed USpd
Pulses per revolution [-] 6
Pulse duty cycle [%] 50
Output level "high" [V] 5
[2.5…6.0]
Output level "low" [V] 0
[0…0.8]
Max. current carrying capacity [mA] 2
Input impedance @ 1 kHz [kΩ] ≥ 10
Input signal for remote ON/OFF URmt
Input level "high" → Motor ON [V] 5
[2.5…5.5 or open contact]
Input level "low" → Motor OFF [V] 0
[0…0.8]
Input impedance @ 1 kHz [kΩ] ≥ 10
Input signal for direction of motor rotation URot
Standard for pump
Input level "high" → Motor CCW
Not recommended for pump
Input level "low" → Motor CW
[V] 5
[2.5…5.5 or open contact]
[V] 0
[0…0.8]
Input impedance @ 1 kHz [kΩ] ≥ 10
Tab.9 Connection diagram for motor controller NPK 012_DC-B-M
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
15
Installation and connection Swing Piston vacuum pump NPK012
Fig.4 Connection diagram without external setpoint setting
Connected components
Pressure relief device
Pump discharge
Fig.5 Connection diagram with external setpoint setting
7.3 Pneumatic connection
Personal injury or property damage through
ejected plugs
If not removed, the plugs on the pressure side of
CAUTION
the pump can be ejected by the resulting operating pressure.
à Remove plugs during installation.
à
Only connect components to the pump that are designed for the pneumatic data and thermal requirements of the pump. (see Chapter 4
Technical data).
à
Protect compressors by means of a pressure relief device between the
pressure-side connections of the compressor and the first shut-off
valve.
à
If the pump is used as a vacuum pump, safely (with respect to medium
and noise) drain the hot pump discharge that may, under certain circumstances, occur at the pneumatic outlet of the pump.
16 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Installation and connection
Connecting the pump
Risk of injury from mixing up suction and pressure
side
Mixing up the suction and pressure side can result
CAUTION
in breakage of connected components on the suction and pressure side.
à Observe the marking of inlet and outlet.
1. Remove protective plugs from the hose connection threads.
2. Connect suction and pressure line (for mounting dimensions, see
Chapter 4 Technical data).
3. Lay the suction and pressure line at a downward angle to prevent condensate from running into the pump.
Secure the pressure-side connections with a fastener (e.g., hose/
pipe clamp) to prevent the hoses from slipping down from the connection.
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
17
Operation Swing Piston vacuum pump NPK012
8 Operation
8.1 General
Risk of burns from hot pump parts and/or hot
medium
Some pump parts may be hot during or after oper-
WARNING
WARNING
ation of the pump.
àAllow pump to cool after operation.
àTake protective measures to protect against
touching hot parts.
Risk of crushing from moving components
Reaching into the open housing during operation
of the pump may result in crushing injuries to fingers.
àMake sure that reaching into the housing is
avoided.
CAUTION
WARNING
àCover the housing.
Risk of injury from bursting hoses during pressure
applications due to excessively high temperatures
When operating the pump in pressure applications, hoses that are not designed for the head
temperatures of the pump at the respective operating point could become porous and burst.
àUse temperature-resistant pressure hoses at
the pneumatic connections.
àWear protective equipment if necessary (e.g.,
safety gloves, hearing protection).
Injury to eyes
Coming too close to the inlet/outlet of the pump
may result in injury to the eyes due to the present
vacuum/operating pressure.
à Do not look into the pump inlet/outlet during
operation.
à
Only operate the pumps in accordance with the operating parameters
and conditions described in Chapter 4 Technical data.
à
Ensure the proper use of the pumps (See Chapter 2.1 Proper use).
à
Eliminate the possibility of improper use of the pumps (see Chapter 2.2
Improper use).
à
Observe safety notices (Chapter 3 Safety).
18 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Operation
à
The pumps are built-in devices. Before they are commissioned, it must
be ensured that the machines or systems into which the pumps are installed comply with the relevant provisions.
Risk of bursting of pump head due to excessive
pressure increase
àDo not exceed the maximum permissible op-
WARNING
erating pressure (see 4 Technical data).
àMonitor the pressure during operation.
àIf the pressure exceeds the maximum permis-
sible operating pressure of the pump: immediately switch off the pump and remedy the fault
(see Chapter 10 Troubleshooting).
àOnly throttle or regulate the air or gas quantity
on the suction line to prevent the maximum
permissible operating pressure from being exceeded.
àIf the air or gas quantity on the pressure line is
throttled or regulated, make sure that the maximum permissible operating pressure at the
pump is not exceeded.
àEnsure that the pump outlet is not closed or
restricted.
Excessive pressure, with all of the associated hazards, can be prevented by means of a bypass line with a pressure relief valve between the pressure and suction sides of the pump. Further information is available from the KNF technical adviser (for contact data,
see www.knf.de).
Operation with open suction-side gas connection can result in contaminants and objects being drawn in.
Pump standstill
Vapors as medium The service life of the sealing lip can be extended by preventing the forma-
à
When the pump is at a pump standstill, establish normal atmospheric
pressure in the lines.
The pump may start up against pressure and/or vacuum during
switch-on (see 4 Technical data). This also applies during operation
after a brief power failure.
à
Ensure that normal atmospheric pressure is present in the lines when
switching on.
tion of condensate in the pump. Therefore:
à
Only perform work with saturated or nearly saturated vapors with a
warm pump.
à
KNF recommends: When transferring aggressive media, flush the
pump before switching off (see Chapter 9.1 Flushing the pump) to ex-
tend the service life of the sealing lip.
Switching off/decommissioning
pump
Recommissioning
Inspecting the pump
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
à
Establish normal atmospheric pressure in the lines (relieve pump
pneumatically).
à
Before recommissioning, observe the applicable standards, guidelines,
regulations and technical standards at the electrical connection.
à
Inspect the pump periodically for external damage or leakage.
19
Operation Swing Piston vacuum pump NPK012
8.2 Control functions DC-B-M
8.2.1 Speed specification
Speed without external setpoint setting
The motor operates the pump with a non-variable speed over the entire
permissible pressure range (see Fig. 4).
Speed with external setpoint setting
The motor operates the pump with a variable speed between n
(see Fig. 5). The speed is specified by means of the control voltage (U
Specification of the speed is performed via the blue lead ( Connection dia-
gram for motor controller NPK 012_DC-B-M).
8.2.2 Speed output
The speed is output via the green lead ( Connection diagram for motor
controller NPK 012_DC-B-M).
The motor controller generates a speed synchronous square frequency ().
min
and n
max
Ctrl
).
Fig.6 Speed output NPK 012_DC-B-M
8.2.3 Input signal for direction of motor rotation
The input signal for direction of motor rotation is applied via the yellow lead
( Connection diagram for motor controller NPK 012_DC-B-M).
8.2.4 Input signal for remote ON/OFF
The input signal for remote ON/OFF is applied via the white lead ( Connec-
tion diagram for motor controller NPK 012_DC-B-M).
8.3 Intermittent operation (NPK012PR)
Switch-on duration/pulsed operation
At pressures in excess of 2.5 bar, the switch-on duration must be limited.
We recommend a maximum switch-on duration of 15 min followed by a
rest time of equal length.
The switch-on duration and switch-off duration are dependent on the heat
generated in the pump head as well as its heat dissipation while at rest. If
the pump is allowed to cool further, the switch-on duration can be extended or the rest phase shortened.
The maximum permissible temperature in operation should not exceed
150°C at the pump head and 95°C at the motor housing.
See sketch for measuring point:
20 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Operation
Measuring point for
max. temperature on
pump head
Measuring point for
max. temperature on
motor housing
Fig.7 Temperature measuring points NPK012
Contact KNF Customer Service for further information. Contact data: see
www.knf.de.
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
21
Cleaning Swing Piston vacuum pump NPK012
9 Cleaning
9.1 Flushing the pump
When transferring dangerous and environmentally hazardous media, KNF
recommends flushing the pump at atmospheric pressure for a few minutes
prior to switch-off (if necessary for safety reasons: with an inert gas) to extend the service life of the diaphragm.
à
Discharge the media safely.
9.2 Cleaning the pump
Risk of burns from hot pump parts
The pump head or motor may still be hot after operation of the pump.
CAUTION
WARNING
à Allow pump to cool after operation.
Health hazard due to dangerous substances in the
pump
Depending on the medium being transferred,
caustic burns or poisoning is possible.
àWear protective equipment if necessary, e.g.,
protective gloves, goggles.
àClean pump with suitable measures.
During cleaning work, ensure that no fluids enter the interior of the
housing.
à
Solvents should only be used during cleaning if head materials are not
affected (ensure resistance of the material).
à
If compressed air is available, blow out parts.
22 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Troubleshooting
10 Troubleshooting
Danger to life from electric shock
àAll work on the pump may only be performed
by authorized specialists.
DANGER
àDisconnect the pump power supply before
working on the pump.
àCheck and ensure that no voltage is present.
Check the pump (see following tables).
Pump does not transfer
Cause Fault remedy
Pump is not connected to the electrical mains.
No voltage in the electrical mains.
Connections or lines are blocked.
External valve is closed or filter is
clogged.
Condensate has collected in the
pump head.
Max. voltage range of motor exceeded.
Tab.10
à
Connect pump to the electrical mains.
à
Check room fuse and switch on if necessary.
à
Check connections and lines.
à
Remove blockage.
à
Check external valves and filters.
à
Separate the source of the condensate from the
pump.
à
Flush the pump with air at atmospheric pressure
for a few minutes (if necessary for safety reasons:
with an inert gas).
à
Disconnect pump from electrical mains.
à
The applied voltage must not exceed the value
specified in Chapter 7.2 Electrical connection.
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
23
Troubleshooting Swing Piston vacuum pump NPK012
Flow rate, pressure or vacuum too low
The pump does not achieve the flow rate specified in the technical specifications or
in the data sheet.
Cause Fault remedy
Condensate has collected in the
pump head.
There is overpressure on the pressure side and at the same time
vacuum or pressure above atmospheric pressure on the suction
side.
Pneumatic lines or connection
parts have insufficient cross section or are throttled.
Leaks occur at connections, lines
or pump head.
Connections or lines are completely or partially plugged.
Head parts are soiled.
Sealing lip broken
Tab.11
à
Separate the source of the condensate from the
pump.
à
Flush the pump with air at atmospheric pressure
for a few minutes (if necessary for safety reasons:
with an inert gas).
à
Change the pneumatic conditions.
à
Disconnect pump from the system to determine
the output values.
à
Eliminate throttling (e.g., valve) if necessary.
à
Use lines or connection parts with larger cross
section if necessary.
à
Eliminate leaks.
à
Check connections or lines.
à
Remove the parts and particles that are causing
the plugging.
à
Clean head components.
à
Stop pump immediately.
Fault cannot be rectified
If you are unable to identify any of the specified causes, send the pump to
KNF Customer Service (contact data: see www.knf.com).
1. Flush pump with air at atmospheric pressure for a few minutes (if necessary for safety reasons: with inert gas) to free the pump head of dan-
gerous or aggressive gases (see Chapter 9.1 Flushing the pump).
2. Clean the pump (see Chapter 9.2 Cleaning the pump).
3. Send the pump together with completed Health and Safety Clearance
and Decontamination Form to KNF, stating the nature of the transferred medium.
24 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Swing Piston vacuum pump NPK012 Accessories
11 Accessories
Accessories Order number
Suction filter 319074
Silencer 058987
Tab.12
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
25
Returns Swing Piston vacuum pump NPK012
12 Returns
Prerequisite for repairing a pump by KNF is a completed Decontamination
Form.
This is made available on the KNF website as a download. To find the
form, select your country on the overview page (www.knf.com). You can
find the Decontamination Form in the download area.
If you have questions, please contact your sales partner (contact data: see
www.knf.com).
26 Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
KNF worldwide
Find your local KNF partner on: www.knf.com
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