Laboport Laboratory Pumps Operating Instructions

Laboport Laboratory Pumps  Operating Instructions
Operating Instructions
Read and observe these Operating Instructions!
Laboport® Laboratory Pumps
N 820 AN.18
N 820 AT.18
N 820.3 AN.18
N 820.3 AT.18
Contents
KNF Neuberger GmbH
Alter Weg 3
D-79112 Freiburg
Germany
Phone +49-(0)7664 / 5909-0
Fax +49-(0)7664 / 5909-99
E-Mail: [email protected]
www.knf.de
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Page
About this document ................................................................. 3
Use ............................................................................................ 4
Safety ........................................................................................ 5
Technical Data .......................................................................... 7
Design and Function ...............................................................12
Installation and connection ......................................................13
Operation .................................................................................14
Servicing ..................................................................................16
Troubleshooting.......................................................................20
Spare parts and accessories ...................................................22
Returns ....................................................................................24
Health and safety clearance and decontamination form .........25
KNF 121209-121371 04/16
Translation of original Operating Instructions, english
Keep for future use!
Laboratory Pumps N 820 A_.18
About this document
1.
About this document
1.1. Using the Operating Instructions
The Operating Instructions are part of the pump.
 Carefully study the Operating Instructions before using a
pump.
 Always keep the Operating Instructions handy in the work
area.
 Pass on the Operating Instructions to the next owner.
 If you use a pump from the N 820.A_.18 or N 820.3 A_.18
range in a vacuum system, take care to observe the Operating
Instructions for Vacuum Systems as well as these instructions.
Project pumps
Customer-specific project pumps (pump models which begin with
“PJ” or “PM”) may differ from the Operating Instructions.
 For project pumps, also observe the agreed upon specifications.
1.2. Symbols and Markings
Warning
A danger warning is located here.
Possible consequences of a failure to observe the
warning are specified here. The signal word, e.g.
WARNING Warning, indicates the danger level.
 Measures for avoiding the danger and its consequences are specified here.
Danger levels
Signal word Meaning
DANGER
warns of immediate danger
WARNING
CAUTION
Consequences if not observed
Death or serious injuries
and/or serious damage are the
consequence.
warns of possible
Death or serious injuries
danger
and/or serious damage are
possible.
warns of a possibly Minor injuries or damage are
dangerous situapossible.
tion
Tab. 1
Other information and symbols
 An activity to be carried out (a step) is specified here.
1. The first step of an activity to be carried out is specified here.
Additional, consecutively numbered steps follow.
This symbol refers to important information.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
3
Use
Laboratory Pumps N 820 A_.18
2.
Use
2.1. Proper use
The pumps are exclusively intended for transferring gases and
vapors.
Owner's responsibility
Operating parameters and
conditions
Only install and operate the pumps under the operating parameters
and conditions described in chapter 4, Technical data.
Make sure that the installation location is dry and the pump is
protected against rain, splash, hose and drip water.
Requirements for
transferred medium
Before using 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, diaphragm and valves with the medium.
Only transfer gases which remain stable under the pressures and
temperatures occurring in the pump.
Accessories
Laboratory equipment or additional components connected to a
pump have to be suitable for use with the pneumatic capabilities of
the pump.
2.2. Improper use
The pumps may not be operated in an explosive atmosphere.
The pumps are not suitable for transferring dusts.
The pumps are not suitable for transferring liquids.
The pumps must not be used to create vacuum and overpressure
simultaneously.
An overpressure must not be applied to the suction side of the
pump.
4
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Safety
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 occupational safety and
accident prevention regulations. Nevertheless, dangers can result
during their use which lead to injuries to the user or others, or to
damage to the pump or other property.
Only use the pumps when they are in a good technical and proper
working order, in accordance with their intended use, observing the
safety advice within the operating instructions, at all times.
Personnel
Make sure that only trained and instructed personnel or specially
trained personnel work on the pumps. This especially applies to
assembly, connection and servicing work.
Make sure that the personnel has read and understood the operating instructions, and in particular the "Safety" chapter.
Working in a safetyconscious manner
Observe the accident prevention and safety regulations when
performing any work on the pump and during operation.
Do not expose any part of your body to the vacuum.
Open housing parts with notice sticker (see fig. 1) only after
separating mains plug from power source.
Fig. 1: Notice sticker
Handling dangerous media
When transferring dangerous media, observe the safety regulations when handling these media.
Handling flammable media
Be aware that the pumps are not designed to be explosion-proof.
Make sure the temperature of the medium is always sufficiently
below the ignition temperature of the medium, to avoid ignition or
explosion. This also applies for unusual operational situations.
Note that the temperature of the medium increases when the pump
compresses the medium.
Hence, make sure the temperature of the medium is sufficiently
below the ignition temperature of the medium, even when it is
compressed to the maximum permissible operating pressure of the
pump. The maximum permissible operating pressure of the pump
is stated in the technical specifications (see chapter 4).
If necessary, consider any external sources of energy, such as
radiation, that may add heat to the medium.
In case of doubt, consult the KNF customer service.
Environmental protection
Store all replacement parts in a protected manner and dispose of
them properly in accordance with the applicable environmental
protection regulations. Observe the respective national and international regulations. This especially applies to parts contaminated
with toxic substances.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
5
Safety
Laboratory Pumps N 820 A_.18
Standards
The pumps conform to the Directive 2011/65/EU (RoHS2).
The pumps conform to the safety regulations of the EC Directive
2014/30/EU concerning Electromagnetic Compatibility and the EC
Directive 2006/42/EC concerning Machinery.
The following harmonized standards have been used:

DIN EN 61010-1

DIN EN 61326-1 - class A

DIN EN 50581
The pumps correspond to IEC 664:
Customer service and
repairs

the overvoltage category II

the pollution degree 2.
Only have repairs to the pump carried out by the KNF Customer
Service responsible.
Only authorized personnel should open those parts of the housing
that contain live electrical parts.
Use only genuine parts from KNF for servicing work.
6
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Laboratory Pumps N 820 A_.18
Technical Data
4.
Technical Data
All pumps are secured against overheating with thermal
switches and are equipped with a mains fuse.
Pump materials N 820 AN.18 and N 820.3 AN.18
Component
Pump material
Pump head
Diaphragm
Valve
Aluminum alloy
CR
NBR
Tab. 2
Pump materials N 820 AT.18 and N 820.3 AT.18
Component
Pump material
Pump head
Diaphragm
Valve
Aluminum alloy
PTFE coated
FFPM
Tab. 3
Refer to the type plate for the pump’s electrical configuration.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
7
Technical Data
Laboratory Pumps N 820 A_.18
N 820 AN.18
Pneumatic performance
Max. permissible operating
pressure [bar g]
Ultimate vacuum [mbar abs.]
Delivery rate at atm. pressure
[l/min]*
1.0
 100
max. 22
Pneumatic connections
Hose connection [mm]
ID 9
Other parameters
Weight [kg]
Dimensions : L x H x W [mm]
Maximum permissible ambient
relative humidity
Max. altitude of site
[m above sea level]
7.1
261 x 204 x 110
80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C
2000
Ambient and media temperature
Permissible
ambient temperature
Permissible media temperature
+ 5 °C to + 40 °C
+ 5 °C to + 40 °C
Electrical Data
Voltage [V]
Frequency [Hz]
Max. operating current [A]
Power consumption pump [W]
Maximum permitted mains
voltage fluctuations
Fuse pump
(2x) T [A]
Protection class motor
Tab. 4
8
100
50/60
2.2
145
+/- 10 %
115
60
1.9
145
+/- 10 %
230
50
0.9
130
+/- 10 %
4.0
3.15
2.0
IP44
* Liters in standard state (1,013 mbar)
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Technical Data
N 820 AT.18
Pneumatic performance
Max. permissible operating
pressure [bar g]
Ultimate vacuum [mbar abs.]
Delivery rate at atm. pressure
[l/min]*
1.0
 100
max. 20
Pneumatic connections
Hose connection [mm]
ID 9
Other parameters
Weight [kg]
Dimensions : L x H x W [mm]
Maximum permissible ambient
relative humidity
Max. altitude of site
[m above sea level]
7.1
261 x 204 x 110
80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C
2000
Ambient and media temperature
Permissible
ambient temperature
Permissible media temperature
+ 5 °C to + 40 °C
+ 5 °C to + 40 °C
Electrical Data
Voltage [V]
Frequency [Hz]
Max. operating current [A]
Power consumption pump [W]
Maximum permitted mains
voltage fluctuations
Fuse pump
(2x) T [A]
Protection class motor
Tab. 5
100
50/60
2.2
145
+/- 10 %
115
60
1.9
145
+/- 10 %
230
50
0.9
130
+/- 10 %
4.0
3.15
2.0
IP44
* Liters in standard state (1,013 mbar)
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
9
Technical Data
Laboratory Pumps N 820 A_.18
N 820.3 AN.18
Pneumatic performance
Max. permissible operating
pressure [bar g]
Ultimate vacuum [mbar abs.]
Delivery rate at atm. pressure
[l/min]*
1.0
8
max. 22
Pneumatic connections
Hose connection [mm]
ID 9
Other parameters
Weight [kg]
Dimensions : L x H x W [mm]
Maximum permissible ambient
relative humidity
Max. altitude of site
[m above sea level]
9.3
304 x 204 x 110
80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C
2000
Ambient and media temperature
Permissible
ambient temperature
Permissible media temperature
+ 5 °C to + 40 °C
+ 5 °C to + 40 °C
Electrical Data
Voltage [V]
Frequency [Hz]
Max. operating current [A]
Power consumption pump [W]
Maximum permitted mains
voltage fluctuations
Fuse pump
(2x) T [A]
Protection class motor
Tab. 6
10
100
50/60
1.8
130
+/- 10 %
115
60
1.2
130
+/- 10 %
230
50
0.7
120
+/- 10 %
3.15
2.5
1.6
IP44
* Liters in standard state (1,013 mbar)
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Technical Data
N 820.3 AT.18
Pneumatic performance
Max. permissible operating
pressure [bar g]
Ultimate vacuum [mbar abs.]
Delivery rate at atm. pressure
[l/min]*
1.0
8
max. 20
Pneumatic connections
Hose connection [mm]
ID 9
Other parameters
Weight [kg]
Dimensions : L x H x W [mm]
Maximum permissible ambient
relative humidity
Max. altitude of site
[m above sea level]
9.3
304 x 204 x 110
80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C
2000
Ambient and media temperature
Permissible
ambient temperature
Permissible media temperature
+ 5 °C to + 40 °C
+ 5 °C to + 40 °C
Electrical Data
Voltage [V]
Frequency [Hz]
Max. operating current [A]
Power consumption pump [W]
Maximum permitted mains
voltage fluctuations
Fuse pump
(2x) T [A]
Protection class motor
Tab. 7
100
50/60
1.8
130
+/- 10 %
115
60
1.2
130
+/- 10 %
230
50
0.7
120
+/- 10 %
3.15
2.5
1.6
IP44
* Liters in standard state (1,013 mbar)
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
11
Design and Function
Laboratory Pumps N 820 A_.18
5.
Design and Function
Design
1
2
3
4
5
6
Connection piece
Pneumatic connection
Pump head
Outlet (pressure side)
Inlet (suction side)
Power switch
Fig. 2: Diaphragm pump (shown: pump N 820.3 AT.18, symbolic))
Function Diaphragm Pump
1
2
3
4
5
6
7
Outlet valve
Inlet valve
Transfer chamber
Diaphragm
Eccentric
Connecting rod
Pump drive
Fig. 3: Pump head
Diaphragm pumps transfer, compress (depending on pump version) and evacuate gases and vapors.
The elastic diaphragm (4) is moved up and down by the eccentric
(5) and the connecting rod (6). In the downward stroke it aspirates
the gas to be transferred via the inlet valve (2). In the upward
stroke, the diaphragm presses the medium out of the pump head
via the outlet valve (1). The transfer chamber (3) is hermetically
separated from the pump drive (7) by the diaphragm.
12
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Installation and connection
6.
Installation and connection
Only install the pumps under the operating parameters and conditions 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 room temperature.
Dimensions
Cooling air supply
Installation location
 See chapter 4, Technical data, for the dimensions of pump.
 Install the pump so that the motor fan can intake sufficient
cooling air.
 Make sure that the installation location is dry and the pump is
protected against rain, splash, hose and drip water.
 Choose a safe location (flat surface) for the pump.
 Protect the pump from dust.
 Protect the pump from vibration and jolt.
6.2. Connection
Connected components
Pump exhaust
Connection
 Only connect components to the pump which are designed for
the pneumatic data of the pump (see chapter 4).
 If the pump is used as a vacuum pump, safely discharge the
pump exhaust at the pump’s pneumatic outlet.
A marking on the pump head shows the direction of flow.
1. Remove the protective plugs from the pneumatic connectors of
the pump.
2. Connect the suction line and pressure line (tube: inner diameter 9 mm).
3. Lay the suction and pressure line at a downward angle to
prevent condensate from running into the pump.
4. Insert the power cable’s plug into a properly installed
shockproof socket.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
13
Operation
Laboratory Pumps N 820 A_.18
7.
Operation
7.1. Preparing for Start-up
Before switching on the pump, observe the following points:
Pump
Operational requirements
 All hoses attached properly

Fan openings not blocked

Specifications of the power supply correspond with
the data on the pump’s type plate.

The pump outlet is not closed or constricted.
Tab. 8
7.2. Starting
 Only operate the pump under the operating parameters and
conditions described in chapter 4, Technical data.
 Make sure the pump is used properly (see chapter 2.1).
 Make sure the pump is not used improperly (see chapter 2.2).
 Observe the safety precautions (see chapter 3).
Hazard of the pump head bursting due to excessive
pressure increase
 Do not exceed max. permissible operating
pressure (see chapter 4).
WARNING
 Monitor pressure during operation.
 If the pressure exceeds the maximum permissible operating pressure, immediately shut down
pump and eliminate fault (see chapter 9. Troubleshooting).
 Only throttle or regulate the air or gas quantity in
the suction line to prevent the maximum permissible operating pressure from being exceeded.
 If the air or gas quantity in the pressure line is
throttled or regulated, make sure that the maximum permissible operating pressure of the
pump is not exceeded.
Excessive pressure (with all of the related hazards) 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.
Pump standstill
14
 With the pump at a standstill, open pressure and suction lines
to normal atmospheric pressure.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Operation
Automatic starting can cause personal injury and
pump damage
When the operation of the pump is interrupted by the
WARNING thermal switch, the pump will restart automatically
after cooling down.
 After triggering of the thermal protection or in the
event of power failure, remove the pump’s mains
plug from the socket so that the pump cannot
start uncontrollably.
 Attempt work on the pump only if the pump is
separated from mains power.
7.3. Switching pump on and off
Switching pump on
The pump may not start up against pressure during switch-on.
This also applies in operation following a brief power failure. If
a pump starts against pressure, it may block. This activates the
thermal switch, and the pump switches off.
 Make sure that no pressure is present in the lines during
switch-on.
 Switch on pump with mains switch (see fig. 2).
Switching off the pump/removing from operation
 When transferring aggressive media, flush the pump prior to
switch-off to increase the service life of the diaphragm (see
chapter 8.2.1).
 Switch off pump with mains switch (see fig. 2).
 Open pressure and suction lines to normal atmospheric pressure.
 Disconnect the power source.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
15
Servicing
Laboratory Pumps N 820 A_.18
8.
Servicing
8.1. Servicing Schedule
Component
Pump
Diaphragm and
valve plates/ sealings
Servicing interval
Regular inspection for external damage or
leaks
Replace at the latest, when pump output
decreases
Tab. 9
8.2. Cleaning
When cleaning, make sure that no liquids enter the inside of
the housing.
8.2.1. Flushing Pump
 Before switching off the pump, flush it with air (if neccesary for
safety reasons: with an inert gas) for about five minutes under
atmospheric conditions (ambient pressure).
8.2.2. Cleaning Pump
 Only use solvents for cleaning if the head materials cannot be
attacked (check the resistance of the material!).
 If compressed air is available, blow out the components.
16
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Servicing
8.3. Changing Diaphragm and Valves
Conditions
Spare parts/tools

Pump is switched off and mains plug is removed from the
socket

Pump is clean and free of hazardous materials

Tubes removed from pump’s pneumatic inlet and outlet

Pump is removed from baseplate (if pump is integrated into a
system)
Spare part/tool
Service Set (according to chapter 10)
Philips-head screwdriver No. 2
Felt-tip pen
Tab. 10
Information on procedure
 Always replace diaphragm and valve plates/sealings together
to maintain the pump performance.
With multi-head pumps, parts of the individual pump heads can be
confused.
 Replace the diaphragm and valve plates/sealings of the individual pump heads consecutively.
Health hazard due to dangerous substances
in the pump!
Depending on the substance transferred, caustic
WARNING burns or poisoning are possible.
 Wear protective clothing if necessary, e.g.
protective gloves.
 Flush pump before replacing the diaphragm and
valve plates/sealings (see chapter 8.2.1).
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
17
Servicing
Laboratory Pumps N 820 A_.18
Removing pump head
1. For two-headed pumps: On the pneumatic head connection
(3), loosen the union nuts (2) by hand. Then slightly loosen the
angle-fitting (1) in the pump head (4) by turning it counterclockwise, so that the connecting tube can be pulled out.
2. Mark the position of head plate (fig. 5/2), intermediate plate
(fig. 5/4) and adapter (fig. 5/10) relatively to each other by a
drawing line (for two-headed pumps: at both pump heads) with
a felt-tip pen. This helps to avoid incorrect assembly later.
3. Loosen the outer screws (5) on the pump head/pump heads.
4. Carefully remove pump head / pump heads.
Fig.4: Removing pump head
Change diaphragm
Replace the diaphragms of two-headed pumps consecutively
in order to ensure that the same number of diaphragm spacers
is used.
1. For two-headed pumps: Push down one diaphragm until other
diaphragm is pushed upwards to its highest position.
2. Carefully unscrew the upper diaphragm (fig. 5/6) counterclockwise using both hands.
3. Shift spacer thick (7) and spacers thin (8) from the old diaphragm onto the screw thread of the new diaphragm (same
number and order).
4. Screw in the new diaphragm and tighten it by hand.
5. For two-headed pumps: Carry out steps 1 to 4 for the second
pump head.
Specification
1
2
3
4
5
6
7
8
9
10
11
Screw
Head plate
Valve plate/sealing
Intermediate plate
Pin guide
Diaphragm
Spacer (thick)
Spacer (thin)
Dampening ring
Adapter
Screw
Fig. 5: Pump head
18
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Servicing
Change valve plates/sealings
Replacing the valve plates/sealings of two-headed pumps
consecutively.
1. Remove head plate (2) from intermediate plate (4).
Valve plates/sealings (3) are visible.
2. Remove old valve plate/sealings.
3. Clean intermediate plate (4) carefully (if there should be deposits in the recesses in the intermediate plate).
4. Insert new valve plates/sealings (3) in the recesses in the
intermediate plate (4).
5. For two-headed pumps: Carry out the steps 1 to 4 for the
second pump head.
6. Dispose of the old diaphragm and valve plates/sealings
properly.
Refitting pump head
1. Apply pressure all around the edge of the diaphragm. With a
two-headed pump: Apply pressure to diaphragm on only one
pump head.
2. Place the intermediate plate (4) with valve plates/sealings (3)
on the adapter (10) in accordance with the felt-tip pen marking.
3. Place the head plate (2) on the intermediate plate (4) in the
position indicated by the guide pin (5).
4. Gently tighten screws (1) in diagonal order.
5. For two-headed pumps: Carry out steps 1 to 4 for the second
pump head.
6. For two-headed pumps: Refit the pneumatic head connection:
Place tube onto the connecting part of the angle fitting, turn
angle fitting to a straight position and tighten the union nut.
Final steps
1. Remount the pump to the baseplate (if applicable).
2. Reconnect suction and pressure line to the pump.
3. Reconnect the pump to the electricity supply.
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
19
Troubleshooting
Laboratory Pumps N 820 A_.18
9.
Troubleshooting
Extreme danger from electrical shock!
 Disconnect the pump power supply before working
on the pump.
DANGER  Make sure the pump is de-energized and secure.
 Check the pump (see Tab. 11 to 14).
Pump does not transfer
Cause
No voltage in the power source
Fault remedy
 Check room fuse and switch on if necessary.
Thermal switch has operated
following to over-heating.






Connections or lines blocked.
External valve is closed or filter
is clogged.
Condensate has collected in
pump head.
Diaphragm or valve plates/
sealings are worn.
Disconnect pump from mains.
Allow pump to cool.
Trace cause of over-heating and eliminate it.
Check connections and lines.
Remove blockage.
Check external valves and filters.
 Detach the condensate source from the pump.
 Flush pump (see chapter 8.2.1).
 Replace diaphragm and valve plates/sealings (see chapter
8.3).
Tab. 11
Flow rate, pressure or vacuum too low
The pump does not achieve the output specified in the Technical data or the data sheet.
Cause
Fault remedy
Condensate has collected in
 Detach the condensate source from the pump.
pump head.
 Flush pump (see chapter 8.2.1).
There is gauge pressure on
 Change the pressure conditions.
pressure side and at the same
time vacuum or a pressure
above atmospheric pressure on
suction side.
Pneumatic lines or connection
 Disconnect pump from system to determine output values.
parts have an insufficient cross  Eliminate throttling (e.g. valve) if necessary.
section.
 Use lines or connection parts with larger cross section if
necessary.
Leaks occur on connections,
 Check that tubes sit correctly on hose nozzles.
lines or pump head.
 Replace leaky tubes.
 Eliminate leaks.
Connections or lines completely  Check connections and lines.
or partially clogged.
 Remove the clogging parts and particles.
20
Head parts are soiled.
 Clean head components.
Diaphragm or valve plates/
sealings are worn.
 Replace diaphragm and valve plates/sealings (see chapter
8.3).
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Troubleshooting
Flow rate, pressure or vacuum too low
The pump does not achieve the output specified in the Technical data or the data sheet.
Cause
Fault remedy
Replaced diaphragms and valve  Check that the spacers have been replaced onto the diaplates/sealings
phragm screw thread.
 Check head connection and hose connections for leaks.
 Possibly carefully tighten the outer screws (fig. 5/1) of the top
plate crosswise.
Tab. 12
Pump is switched on, but does not run, the on/off-switch on the pump is not lit
Cause
Pump is not connected with the
power source.
No voltage in the power source
Fuse in the pump is defective.
Fault remedy
 Connect pump to mains power.




Check room fuse and switch on if necessary.
Remove pump’s mains plug from the socket.
Loosen marked lid on underside of the pump.
Select and replace suitable fuse (see chapter 4).
Tab. 13
Pump is switched on, but does not run, the on/off-switch on the pump is lit
Cause
The thermal switch has opened
due to overheating
Cause
 Remove pump´s mains plug from the socket.
 Allow pump to cool.
 Trace cause of over-heating and elimate it.
Tab. 14
Fault cannot be rectified
If you are unable to determine any of the specified causes, send
the pump to KNF Customer Service (see last page for the address).
1. Flush the pump to free the pump head of dangerous or aggressive gases (see chapter 8.2.1).
2. Clean the pump (see chapter 8.2.2).
3. Send the pump, together with completed Health and Safety
Clearance and Decontamination Form (Chapter 12), to KNF
stating the nature of the transferred medium.
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21
Spare parts and accessories
Laboratory Pumps N 820 A_.18
10. Spare parts and accessories
10.1. Spare parts
Service Set contains all replacement parts needed for one
complete service.
One-headed pumps:
Service Set contains 1 diaphragm and 2 valve plates/sealings.
For pump type:
N 820 AN.18
N 820 AT.18
Order No.
058081
058078
Two-headed pumps:
Service Set contains 2 diaphragm, and 4 valve plates/sealings.
For pump type:
N 820.3 AN.18
N 820.3 AT.18
Order No.
058080
057358
10.2. Accessories
®
A program of accessories completes the LABOPORT range of
plumps:
Separator, High Performance Condenser, and Vacuum-Controller.
These components can quickly and easily be assembled to a
system by simple plug-in connectors.
Base plate
®
Basic requirement for the assembly of a LABOPORT -system is a
base plate on which all components are mounted.

Base plate and mounting:
Item NP810/820, Order No. 028129
Separator

Separator complete including tray:
Item: NR 800
Order No. 026225
High Performance Condenser

High Performance Condenser complete including support
Item: NH 800
Order No. 026231
Vacuum-Controller

22
Vacuum-Controller complete including support and Electrical
Supply Unit
Item: NC 800A
Order No. 046380
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Laboratory Pumps N 820 A_.18
Spare parts and accessories

Vacuum-Controller complete without Electrical Supply Unit (for
upgrading from system with one Vacuum-Controller to system
with two Vacuum Controllers)
Item: NC 800B
Order No. 046381

Two Vacuum-Controllers complete including support and
Electrical Supply Unit
Item: NC 800A/B Order No. 046382
Your KNF technical adviser will advise you how to upgrade your
pump to a system. See page 1 for telephone number.
When ordering accessories please tell us to include the operating
instructions for vacuum systems.
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23
Returns
Laboratory Pumps N 820 A_.18
11. Returns
Pumps and systems used in laboratories and process-based
industries are exposed to a wide variety of conditions. This means
that the components contacting pumped media could become
contaminated by toxic, radioactive, or otherwise hazardous substances.
For this reason, customers who send any pumps or systems back
to KNF must submit a Health and safety clearance and decontamination form in order to avoid a hazardous situation for KNF employees. This Health and safety clearance and decontamination
form provides the following information, among other things:

physiological safety

whether medium-contacting parts have been cleaned

whether the equipment has been decontaminated

media that have been pumped or used
To ensure worker safety, work may not be started on pumps or
systems without a signed Health and safety clearance and decontamination form.
For optimal processing of a return, a copy of this declaration
should be sent in advance via e-mail, regular mail, or fax to KNF
Customer Service (refer to final page for address). In order to avoid
endangering employees who open the shipment's packaging,
despite any residual hazards, the original version of the Health and
safety clearance and decontamination form must accompany the
delivery receipt on the outside of the packing.
The template for the Health and safety clearance and decontamination form is included with these Operating Instructions and may
also be downloaded from the KNF website.
The customer must specify the device type(s) and serial number(s)
in the Health and safety clearance and decontamination form in
order to provide for the unambiguous assignment of the Declaration to the device that is sent to KNF.
In addition to the customer's declaration of physiological safety,
information about operating conditions and the customer's application are also of importance to ensure that the return shipment is
handled appropriately. Therefore, the Health and safety clearance
and decontamination form requests this information as well.
24
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
Laboratory Pumps N 820 A_.18
Health and safety clearance and decontamination form
12. Health and safety clearance and decontamination form
Translation of original Operating Instructions, English, KNF 121209-121371 04/16
25
KNF worldwide
Please find our local KNF partners at: www.knf.com
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