KNF N 810 FT.18, N 820 FT.18, N 840 FT.18, N 840.1.2 FT. 18, N 810.3 FT.18 User guide

Operating Instructions

Read and observe these Operating Instructions!

Laboport®

Chemically-resistant Laboratory Pumps

and Systems

N 810 FT.18
N 820 FT.18
N 840 FT.18
N 840.1.2 FT.18

N 810.3 FT.18
N 820.3 FT.18
N 840.3 FT.18
N 842.3 FT.18

SR
SH
SC
SCC

KNF Neuberger GmbH
Alter Weg 3
D-79112 Freiburg
Germany
Phone ++49 / (0)7664 / 5909-0
Fax ++49 / (0)7664 / 5909-99
E-Mail:
www.knf.de

KNF 121211-121345 07/13
Translation of original Operating Instructions, english

[e-mail]

LABOPORT Pumps and Systems Content

Content Page

1. About this document 4

1.1. Using the Operating Instructions 4

1.2. Symbols and Markings 4

2. Use 5

2.1. Proper Use 5

2.2. Improper Use 5

3. Safety 6

4. System overview 8

5. Technical Data 10

5.1. Pumps 10

5.2. Electrical Supply Unit 17

5.3. Vacuum Controller 17

5.4. Vacuum Systems 18

6. Design and Function 19

6.1. Pump 19

6.2. Separator 20

6.3. High Performance Condenser 21

6.4. Vacuum Controller 22

7. Installation, mounting and
connection 23

7.1. Connect pump 23

7.2. Baseplate 24

7.3. Separator 24

7.4. High Performance Condenser 25

7.5. Electrical Supply Unit and

Vacuum Controller 25

7.6. Gas Ballast 28

7.7. Mounting of Systems 28

7.7.1. System SR 28

7.7.2. System SH 29

7.7.3. System SC 30

7.7.4. System SCC 31

7.7.5. Retrofitting from System SC to

System SCC 32

9.2.3. Emptying and Cleaning the
Separator 37

9.2.4. Emptying and Cleaning the
Condenser 37

9.3. Changing Diaphragm and Valve

Plates/Sealings 38

10. Troubleshooting 42

10.1. Pump/System without Vacuum

Controller 42

10.2. System with one Vacuum

Controller 43

10.3. System with two Vacuum

Controllers 45

10.4. Fault cannot be rectified 45

11. Ordering Information 46

11.1. Pumps and Spare Parts 46

11.2. Accessories for Pump Systems 46

12. Decontamination Declaration 47

8. Operation 33

8.1. Pump 33

8.1.1. Preparing for Start-up 33

8.1.2. Starting 33

8.2. Switching Pump/System on and
off 35

8.3. Notices related to System
Operation 35

8.3.1. Separators 35

8.3.2. High Performance Condenser 35

8.3.3. Vacuum Controller 36

8.3.4. Gas Ballast 36

9. Servicing 37

9.1. Servicing Schedule 37

9.2. Cleaning 37

9.2.1. Flushing Pump 37

9.2.2. Cleaning Pump 37

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 3

About this document LABOPORT Pumps and Systems

warning are specified here. The signal word, e.g.

1. About this document

1.1. Using the Operating Instructions

The Operating Instructions are part of the pump/system.

 Carefully study the Operating Instructions before using a pump

or system.

 Always keep the Operating Instructions handy in the work

area.

 Pass on the Operating Instructions to the next owner.

Project systems and pumps

Customer-specific project systems or pumps (systems and pump
models which begin with “PJ” or “PM”) may differ from the Operat­ing Instructions.

For project systems and 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

Danger levels

Signal word Meaning Consequences if not observed

DANGER

WARNING

CAUTION

Tab. 1

Other information and symbols

Warning, indicates the danger level.

 Measures for avoiding the danger and its conse-

quences are specified here.

warns of immedi­ate danger

warns of possible
danger

warns of a possibly
dangerous situa­tion

Death or serious injuries
and/or serious damage are the
consequence.

Death or serious injuries
and/or serious damage are
possible.

Minor injuries or damage are
possible.

4 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

 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.

LABOPORT Pumps and Systems Use

2. Use

2.1. Proper Use

The pump/system is exclusively intended for transferring gases
and vapors.

Owner's responsibility

Operating parameters and

conditions

Requirements for

transferred medium

High performance condenser

Accessories

Only install and operate the pump/system under the operating
parameters and conditions described in chapter 5, Technical data.

Make sure that the installation location is dry and the pump/system
is protected against rain, splash, hose and drip water.

Before using a medium, check the compatibility of the materials of
the pump head, diaphragm and valves with the medium.

Before using a medium, check whether the medium can be trans­ferred danger-free in the specific application case.

Only transfer gases which remain stable under the pressures and
temperatures occurring in the pump.

The high performance condenser must be installed on the outlet
side of the pump; if it is installed on the inlet side there is a danger
of implosion.

Observe the correct usage of the gas- and cooling liquid­connections on the high performance condenser. Inlet and outlet
connections for the gas are not interchangeable.

Laboratory equipment or additional components connected to a
pump/system have to be suitable for use with the pneumatic capa­bilities of the pump (see chapter 5.1, page 10).

2.2. Improper Use

The pump/system may not be operated in an explosive atmos­phere.

The pump/system is not suitable for transferring dusts.

The pump/system is not suitable for transferring liquids.

For LABOPORT systems with vacuum controller: The vacuum
system must not be used if the entry of air or gas into the vacuum
system during venting (pump vent valve) could result in the crea­tion of reactive, explosive or otherwise hazardous mixtures (e.g.
with the medium).

The pump/the system must not be used to create vacuum and
overpressure simultaneously.

An overpressure must not be applied to the suction side of the
pump/ the system.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 5

Safety LABOPORT Pumps and Systems

3. Safety

Note the safety precautions in chapters 7. Installation, mount­ing and connection, and 8. Operation.

The pump/system is 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/system or other property.

Only use the pump/system when it is in a good technical and
proper working order, in accordance with its intended use, observ­ing the safety advice within the operating instructions, at all times.

Personnel

Working in a safety-

conscious manner

Fig. 1: Notice sticker

Handling dangerous media

Handling flammable media

Make sure that only trained and instructed personnel or specially
trained personnel work on the pump/system. 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.

Observe the accident prevention and safety regulations when
performing any work on the pump/system 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.

When transferring dangerous media, observe the safety regula­tions when handling these media.

Be aware that the pump/system is not designed to be explosion­proof.

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 5.1, page 10).

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

6 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

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.

LABOPORT Pumps and Systems Safety

Standards

Customer service and

repairs

The pumps conform to the Directive 2011/65/EU (RoHS2).

The pumps conform to the safety regulations of the EC Directive
2004/108/EC concerning Electromagnetic Compatibility and the EC
Directive 2006/42/EC concerning Machinery. The requirements of
the following harmonised standards are fulfilled:

 DIN EN 61010-1

 DIN EN 61326-1

 DIN EN 61000-3-2/3

The pumps correspond to IEC 664:

 the overvoltage category II

 the pollution degree 2

Only have repairs to the pump/system 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.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 7

System overview LABOPORT Pumps and Systems

4. System overview

1 Electrical supply unit
2 Vacuum controller
3 Vent valve at vacuum

controller

4 On/off switch of vacuum

controller
5 Pump vent valve
6 Vacuum valve
7 High performance conden-

ser
8 Hose connector
9 Angled nozzle for coolant
10 Spring clamp
11 Flask for condenser
12 Support for high perfor-

mance condenser
13 Locating pin for pump
14 Separator
15 Holder for Separator
16 Support for vacuum control-

ler
17 Baseplate
18 Vacuum pump
19 On/off switch of pump

Fig. 2: Full expanded LABOPORT System SCC..., for example pump
model N 840.3 FT.18 (symbolic)

8 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems System overview

Fig. 3: LABOPORT Systems

Module SR... SH... SC... SCC...

System

Pump X X X X
Baseplate X X X X
2 separators X
1 separator X X X
High performance

X X X

condenser
Electrical supply unit X X
1 vacuum controller X
2 vacuum controllers X

Tab. 2

Each pump and all systems can be expanded modularly up to
a full system SCC (see chapter 7.7, page 28).

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 9

Technical Data LABOPORT Pumps and Systems

≤

5. Technical Data

5.1. Pumps

All pumps are secured against overheating with thermal
switches and are equipped with a mains fuse.

Pump materials (for all pump types) *

Pump head PTFE
Diaphragm PTFE coated
Valve FFPM

Tab. 3 *according to DIN ISO 1629 and 1043.1

Refer to the type plate for the pump’s electrical configuration.

N 810 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

100

max. 10

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 5.9

Dimensions: L x H x W [mm] 256 x 187 x 146

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

1.4 1.3 0.6

tion [A]
Power consumption pump [W] 110 110 100
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

2.5 2.5 1.25

(2x) T [A]
Protection class motor IP44

Tab. 4 * Liters in standard state (1,013 mbar)

10 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Technical Data

≤

N 820 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

100

max. 20

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 7.1

Dimensions: L x H x W [mm] 268 x 207 x 159

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

2.2 1.9 0.9

tion [A]
Power consumption pump [W] 145 145 130
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

4.0 3.15 2.0

(2x) T [A]
Protection class motor IP44

Tab. 5 * Liters in standard state (1,013 mbar)

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 11

Technical Data LABOPORT Pumps and Systems

≤

N 840 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

100

max. 34

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 10.3

Dimensions: L x H x W [mm] 297x 226 x 171

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

4.4 3.2 1.5

tion [A]
Power consumption pump [W] 200 220 180
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

6.3 6.3 3.15

(2x) T [A]
Protection class motor IP44

Tab. 6 * Liters in standard state (1,013 mbar)N 810.3 FT.18

12 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Technical Data

≤

N 810.3 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

8

max. 10

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 6.9

Dimensions: L x H x W [mm] 281 x 187 x140

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

1.4 1.3 0.6

tion [A]
Power consumption pump [W] 100 110 90
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

2.5 2.5 1.25

(2x) T [A]
Protection class motor IP44

Tab. 7 *Liters in standard state (1,013 mbar)

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 13

Technical Data LABOPORT Pumps and Systems

≤

N 820.3 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

8

max. 20

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 9.3

Dimensions: L x H x W [mm] 312 x 207 x 144

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

1.8 1.2 0.7

tion [A]
Power consumption pump [W] 130 130 120
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

3.15 2.5 1.6

(2x) T [A]
Protection class motor IP44

Tab. 8 *Liters in standard state (1,013 mbar)

14 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Technical Data

≤

N 840.3 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

8

max. 34

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 12.6

Dimensions: L x H x W [mm] 341 x 226 x 166

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

4.4 3.2 1.5

tion [A]
Power consumption pump [W] 220 250 245
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

6.3 6.3 3.15

(2x) T [A]
Protection class motor IP44

Tab. 9 *Liters in standard state (1,013 mbar)

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 15

Technical Data LABOPORT Pumps and Systems

≤

N 840.1.2 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

90

max. 60

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 12.6

Dimensions: L x H x W [mm] 341 x 226 x 160

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

5.1 4.2 1.9

tion [A]
Power consumption pump [W] 275 280 270
Maximum permitted mains

+/- 10 % +/- 10 % +/- 10 %

voltage fluctuation
Fuse pump

6.3 6.3 3.15

(2x) T [A]
Protection class motor IP44

Tab. 10 *Liters in standard state (1,013 mbar)

16 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Technical Data

≤

N 842.3 FT.18

Pneumatic performance

Max. permissible operating

1.0

pressure [bar g]
Ultimate vacuum [mbar abs.]

Delivery rate at atm. pressure

2

max. 34

[l/min]*

Pneumatic connection

Hose connection [mm] ID 10

Ambient and media temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature
Permissible media temperatu-

+ 5 °C to + 40 °C

re

Other parameters

Weight [kg] 13.4

Dimensions: L x H x W [mm] 341 x 223 x 167

Maximum permissible ambient
relative humidity

80 % for temperatures up to
31 °C, decreasing linearly to
50 % at 40 °C

Maximum altitude of site

2000

[m above sea level]

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Maximum current consump-

4.4 3.2 1.5

tion [A]
Power consumption pump [W] 260 290 245

Fuse pump

6.3 6.3 3.15

(2x) T [A]
Protection class motor IP44

Tab. 11 *Liters in standard state (1,013 mbar)

5.2. Electrical Supply Unit

Electrical Data

Voltage [V] 100 115 230
Frequency [Hz] 50/60 60 50
Power consumption* [W] 270 300 295
Fuse pump

6.3 6.3 3.15

(2x) T [A]

Tab. 12

* includes the power consumption of the whole system (inclusive pump
and vacuum controller); for pumps N 840.1.2 FT.18 and N 842.3 FT.18
power consumption raises by approx. 50 W.

5.3. Vacuum Controller

See Operating Manual of the vacuum controller.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 17

Technical Data LABOPORT Pumps and Systems

5.4. Vacuum Systems

Ambient temperature

Permissible

+ 5 °C to + 40 °C

ambient temperature

Operating parameters of coolant (only for high performance condensers)

Permissible pressure [bar g] 3
Permissible temperature - 15 °C to + 20 °C
Condenser connectors For tube 8mm ID

Tab. 13

18 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Design and Function

6. Design and Function

6.1. Pump

Design

1 Connection piece
2 Pneumatic connection
3 Pump head
4 Outlet (pressure side)
5 Inlet (suction side)
6 Power switch

1 Outlet valve
2 Inlet valve
3 Transfer chamber
4 Diaphragm
5 Eccentric
6 Connecting rod
7 Pump drive

Fig. 4: Diaphragm pump (shown: pump N 840.3 FT.18)

Function Diaphragm pump

Fig. 5: 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.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 19

Design and Function LABOPORT Pumps and Systems

1

2

3

4

6.2. Separator

Design

1 Tubing
2 Hose nozzle
3 Separator container
4 Holder for separator

Fig. 6: Separator (shown: LABOPORT system SR with pump
N 840.3 FT.18 as example)

Function

Condensable components in the gas can be separated on the
pressure side of the pump. On the suction side the separator
collects particular matter and droplets. This protects the pump from
contamination.

The separator is made of a specially treated glass and features
implosion protection.

20 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Design and Function

1

2

3

3

4

5

6

7

6.3. High Performance Condenser

Design

1 Hose nozzle
2 High Performance Conden-

ser

3 Angled nozzle for coolant
4 Tubing
5 Spring clamp
6 Flask
7 Support

Fig. 7: High performance condenser (shown: LABOPORT system SH with
pump N 840.3 FT.18 as example)

Function

The high performance condenser at pump outlet enables conden­sable components in the vapour to be separated out.

The condensate is collected in a glass flask. The flask is attached
to the condenser flange with a clamp. The condensation tempera­ture is maintained by running cold water or recirculated coolant
through the condenser.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 21

Design and Function LABOPORT Pumps and Systems

1 2 2 3 1

5

5

4

6.4. Vacuum Controller

1 Tubing
2 Power switch
3 Support
4 Electrical supply unit
5 Vacuum controller

Fig. 8: Vacuum controller (shown: LABOPORT system SCC with pump
N 840.3 FT.18 as example)

Function

In laboratory systems without a vacuum controller the pump runs
continuously and works against its vacuum. If there is a vacuum
controller, it will switch the pump off once the selected target
vacuum has been reached.

With two vacuum controllers it becomes possible to simultaneously
run two different and independent processes with just one pump.

Once one vacuum controller’s set point has been reached, that
vacuum controller will close the valve it is controlling. If two
vacuum controllers are used, the pump will continue to work until
the second controller’s set point has been reached. Then the
second vacuum controller will close the valve it is controlling. The
pump switches off and the pump vent valve is opened.

If one of the two vacuum values falls below the hysteresis range,
the pump will switch back on.

Refer to the vacuum controller’s operating instructions for more
information.

22 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Installation, mounting and connection

7. Installation, mounting and connection

Only install and operate the pumps/systems under the operating
parameters and conditions described in chapter 5, Technical data.

Observe the safety precautions (see chapter 3, page 6).

 Before installation, store the pump/the accessories at the

installation location to bring it up to room temperature.

Dimensions

Cooling air supply

Installation location

Connected components

Pump exhaust

 See chapter 5, Technical data, for the dimensions of system.

 Install the pump/system so that the motor fan can intake suffi-

cient cooling air.

 Make sure that the installation location is dry and the

pump/system is protected against rain, splash, hose and drip
water.

 Choose a safe location (flat surface) for the pump/system.

 Protect the pump/system from dust.

 Protect the pump/system from vibrations and jolts.

7.1. Connect pump

 Only connect components to the pump which are designed for

the pneumatic data of the pump (see chapter 5.1, page 10).

 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.

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 121211-121345 07/13 23

Installation, mounting and connection LABOPORT Pumps and Systems

7.7.1 (system SR), 7.7.2 (system SH), 7.7.3 (system SC), 7.7.4

7.2. Baseplate

Condition

Fig. 9: Installation of the mounts at

the pump

Conditions

Tools and material

 Pump disconnected from mains

1. Unscrew the pump`s rubber feet (1) anti-clockwise.

2. Install the mounts (2) onto the pump.

3. Stand the pump (fitted with the mounts) onto the baseplate

4. Aligne the mounts on the pump and the baseplate.

5. Slide the locating pin (see fig. 2/13) through the mount holes

on the baseplate and on the pump until they are fully engaged.

6. Check that the pump is securely fastened to the baseplate via
both mounts.

7.3. Separator

 Baseplate mounted (see chapter 7.2)

 Pump disconnected from mains

Qty Material
1 Phillips-head screwdriver No. 3

Tab. 14

1. Slide the container for the separator (see fig. 6/4) into the
baseplate’s upward-pointing slotted bar.

2. Fix the holders by tighten the screw in the bottom of them.

3. Place the glass separators into the holders.

Laying hoses: depending on system configuration see chapter

(system SCC) or 7.7.5 (retrofitting from system SC to system
SCC).

24 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Installation, mounting and connection

7.4. High Performance Condenser

The high performance condenser is delivered installed on a
support.

Conditions

Touls and material

 Baseplate mounted (see chapter 7.2, page 24)

 Pump disconnected from mains and de-energized

Qty Material
1 Allen key 5 mm

Tab. 15

Installing the high performance condenser

Danger of implosion if installed improperly

There is a danger of implosion if the high
performance condenser is installed on the pump

WARNING

1. Slide the support of high performance condenser (see fig. 7/7)

into the baseplate’s upward-pointing slotted bar.

inlet.
 Connect the high performance condenser to the

pump outlet only.

Conditions

Tools and material

2. Fix the support to the baseplate by tightening the allen screw.

3. Align the high performance condenser so that the hose
connection at the inlet is lower than the pump outlet.

Laying hoses: depending on system configuration see chapter

7.7.2 (system SH), 7.7.3 (system SC), 7.7.4 (system SCC) or

7.7.5 (retrofitting from system SC to system SCC).

7.5. Electrical Supply Unit and Vacuum Controller

The vacuum controller(s) is (are) delivered with the ventilation
valve and pump vent valve installed on a support.

When retrofitting from system SC to system SCC, the second
vacuum controller is delivered complete with the ventilation
valve installed on a new support. Install the existing vacuum
controller on the new support. For more information about
retrofitting from system SC to system SCC, refer to chapter

7.7.5, page 32.

 Baseplate mounted (see chapter 7.2, page 24)

 Pump disconnected from mains

Qty Material
1 Allen key 4 mm
1 Allen key 5 mm

Tab. 16

Mounting the electrical supply unit

1. Slide the electrical supply unit (see fig. 8/4) with both tightening
nuts into the baseplate’s lateral slotted bar.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 25

Installation, mounting and connection LABOPORT Pumps and Systems

2. Tighten the allen screws at the bottom of the electrical supply
unit.

Mounting the vacuum controller

1. Slide the support’s attachment part (see fig. 8/3) into the
baseplate’s lateral, upward-pointing slotted bar.

2. Tighten the allen screw at the bottom of the support.

Wire and connect with each other the electrical supply unit
and the vacuum controller

Figures 11 and 12 provide an overview of the electrical
connections for LABOPORT systems SC and SCC.

1. Connect signal socket of the vacuum controller with the elet­rical supply unit socket marked VC 1 (fig. 10/5) using the con­nection cable.

2. When using two vacuum controllers, connect the second
vacuum controller’s signal socket to the electrical supply unit’s
VC2 connection (6).

Fig. 10: Connections of the electri-

cal supply unit

3. Insert the vacuum controller power cord plug into the designat­ed electrical supply unit socket (2).

4. When using two vacuum controllers, insert the vacuum valves’
plugs into the electrical supply unit’s VV1 (4) und VV2 (3)
connections.

5. Insert the pump vent valve plug into the electrical supply unit
socket marked PRV (7).

6. Insert the vacuum pump power cord plug into the designated
electrical supply unit socket (1).

7. Tuck all of the wires into the electrical supply unit and secure
the cover.

8. Make sure power switches on the pump and on the vacuum
controller(s) are switched off.

9. Insert the electrical supply unit`s system power cord plug into a
shockproof socket.

26 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Installation, mounting and connection

(optional)

Pump vent

to vacuum pump

System
power
connect

Electrical
supply unit

valve

Vacuum controller (rear)

Fig. 11: Electrical connection LABOPORT System SC

Vacuum controller 1 (rear)

to vacuum pump

System
power
connect

Vacuum
valve 1

Vacuum
valve 2

Pump vent
valve

Vacuum controller 2

Coolant valve

Electrical
supply unit

Fig. 12: Electrical connection LABOPORT System SCC

Laying hoses: depending on system configuration see chapter

7.7.3 (system SC), 7.7.4 (system SCC) or 7.7.5 (retrofitting
from system SC to system SCC).

Mounting coolant valve for high performance condenser
(optional)

With a coolant valve it becomes possible to stop the flow of
coolant if the system’s control operation is interrupted or
terminated.

Danger of the high performance condenser bursting

 Make sure that the coolant valve is mounted

between the coolant supply and the coolant inlet

WARNING

port of high performance condenser.

1. Connect the coolant valve to the coolant supply.

2. Insert the coolant valve’s plug into the vacuum

controller’s VV1 socket (see fig. 10/4).

See fig. 16, page 29 for coolant inlet and outlet.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 27

Installation, mounting and connection LABOPORT Pumps and Systems

7.6. Gas Ballast

Only for two-headed pumps.

Condition

1 2

4

Fig. 13: Mounting the gas ballast

 Motor disconnected from mains and de-energized

Mounting

1. Disconnect the tubes from the inlet (4) and the outlet (3) of the

3

pump.

2. Remove the pump from the baseplate.

3. Open the connection (2) of the pump heads.

4. Screw out the connecting piece (1) of the vacuum side head.

5. Screw the gas ballast into the pump head.

6. Remount the connection (2) between the both pump heads.

7.7. Mounting of Systems

The displayed system tube configuration is for two-headed
pumps only.

Contact KNF Service for information about laying tubes for
one-headed pumps and pumps with aluminum heads (“A” in
the type designation).

7.7.1. System SR

Tools and material

Fig. 14: Tubing system SR

The system SR consists of:

 baseplate

 two separators

Qty Material
1 Phillips-head screwdriver No. 3
2 Tubes (see fig. 14)

 Resistant to the medium employed

 Inside diameter 10 mm

 Length: approx. 150 mm

Tab. 17

1. Attach pump to the baseplate (see chapter 7.2, page 24).

2. Install the separators (chapter 7.3, page 24).

3. Lay tubes for separators (see fig. 14).

28 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Installation, mounting and connection

7.7.2. System SH

The system SH consists of:

 Baseplate

 1 separator

 1 high performance condenser

Tools and material

Qty Material
1 Phillips-head screwdriver No. 3
1 Allen key 5 mm
2 Tubes (see fig. 15)

 Resistant to the medium employed

 Inside diameter 10 mm

 Length: (1) approx. 150 mm, (2) approx. 220 mm

Tab. 18

Danger of the high performance condenser bursting

 Make sure that the high performance conden-

ser´s upper gas outlet is not blocked.

WARNING

Fig. 15: Tubing system SH

Fig. 16: Coolant supply of high

performance condenser

Improper laying of hoses will result in damage to the
pump

 Correctly assign gas and coolant hose

DANGER

connections.

 Do not reverse the gas connections’ inlets and

outlets.

1. Attach pump to the baseplate (see chapter 7.2, page 24).

2. Install the separator (see chapter 7.3, page 24).

3. Install the high performance condenser (see chapter 7.4, page

25).

4. Lay hoses for system (see fig. 15).

The condenser-connectors for the coolant require connection
tubing with an inside diameter of 8 mm.
Coolant inlet and outlet see fig. 16.

When using a coolant valve:

Danger of the high performance condenser bursting

WARNING

 Make sure that the coolant valve is mounted

between the coolant supply and the coolant inlet
port of high performance condenser.

1 Coolant inlet
2 Coolant outlet

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 29

Installation, mounting and connection LABOPORT Pumps and Systems

) approx. 300 mm,

7.7.3. System SC

The system SC consists of:

 Baseplate

 1 separator

 1 high performance condenser

 Electrical supply unit with 1 vacuum controller

Tools and material

Qty Material
1 Phillips-head screwdriver No. 3
1 Allen key 4 mm
1 Allen key 5 mm
4 Tubes (see fig. 17)

 Resistant to the medium employed

 Inside diameter 10 mm

 Length: (1,4) approx. 220 mm, (2

(3) approx. 150 mm

Tab. 19

1. Attach pump to the baseplate (see chapter 7.2, page 20).

Fig. 17: Tubing system SC

2. Install the separator (see chapter 7.3, page 20).

3. Install the high performance condenser (see chapter 7.4, page

21).

4. Install the electrical supply unit and the vacuum controller (see
chapter 7.5, page 21).

5. Lay hoses for system (see fig. 17).

Coolant inlet and outlet see fig. 16.

When using a coolant valve:

Danger of the high performance condenser bursting

 Make sure that the coolant valve is mounted

between the coolant supply and the coolant inlet

WARNING

port of high performance condenser.

6. Wire and connect with each other the electrical supply unit and
the vacuum controller (see chapter 7.5, page 21).

30 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Installation, mounting and connection

7.7.4. System SCC

The system SCC consists of:

 Baseplate

 1 separator

 1 high performance condenser

 Electrical supply unit with 2 vacuum controllers

Tools and material

Qty Material
1 Phillips-head screwdriver No. 3
1 Allen key 4 mm
1 Allen key 5 mm
8 Tubes (see fig. 18)

 Resistant to the medium employed

 Inside diameter 10 mm

 Length: (1) approx. 320 mm, (2) approx. 260 mm,

(3,4) approx. 120 mm, (5) approx. 220 mm, (6) approx.
135 mm, (7) approx. 175 mm, (8) approx. 350 mm

Tab. 20

1. Attach pump to the baseplate (see chapter 7.2, page 20).

Fig. 18: Tubing system SCC

2. Install the separator (see chapter 7.3, page 20).

3. Install the high performance condenser (see chapter 7.4, page

21).

4. Install the electrical supply unit and both vacuum controllers
(see chapter 7.5, page 21).

5. Lay hoses for system (see fig. 18).

Coolant inlet and outlet see fig. 16.

When using a coolant valve:

Danger of the high performance condenser bursting

 Make sure that the coolant valve is mounted

between the coolant supply and the coolant inlet

WARNING

port of high performance condenser.

6. Wire and connect with each other the electrical supply unit and
the vacuum controller (see chapter 7.5, page 21).

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 31

Installation, mounting and connection LABOPORT Pumps and Systems

7.7.5. Retrofitting from System SC to System SCC

The second vacuum controller is delivered complete with the
vent valve installed on a new support (length: 410 mm). Install
the existing vacuum controller on the new support.

Conditions

Tools and material

 Pump removed from operation (see chapter 8.2, page 35)

 Pump disconnected from mains

Qty Material
1 Allen key 4 mm
1 Allen key 5 mm
See chapter 7.7.4 for the required hoses

Tab. 21

Removing the existing vacuum controller

The following item numbers refer to fig. 2, page 8.

1. Disconnect the tubes from the pump vent valve (5) as well as
from the controller (2) vent valve (3).

2. Pull out all plugs from the electrical supply unit (1).

3. Remove the vacuum controller from the support (16) after
loosening the clamp assembly.

4. Remove the lateral support from the main support after loosen­ing the clamp assembly.

5. Loosen the allen screw at the foot of the main support.

Fig. 19: Tubing system SCC

6. Slide the support out of the baseplate (17) mounting slot as­sembly.

Mount new vacuum controller

The following item numbers refer to fig. 2, page 8.

1. Slide the removed vacuum controller (2) into the slot on the
new support (16) and fix it in place with the clamp connection.

2. Slide the support’s attachment part into the baseplate’s (17)
lateral upward-pointing slotted bar.

3. Tighten the allen screw at the foot of the support.

4. Mount the lateral support onto the main support.

5. Slide two additional vacuum valves(6) onto the lateral support
mounting slot and fix the device with help of the clamping as­sembly.

6. Lay hoses for system (see fig. 19).

7. Wire and connect with each other the electrical supply unit and
the vacuum controller (see chapter 7.5, page 25).

32 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Operation

8. Operation

8.1. Pump

8.1.1. Preparing for Start-up

Before switching on the pump/system, observe the following
points:

Operational requirements
Pump  All hoses attached properly

Pump/
System

System  Clamp connections are tight

Tab. 22

8.1.2. Starting

 Only operate the pump under the operating parameters and

conditions described in chapter 5, Technical data.

 Make sure the pumps are used properly (see chapter 2.1,

page 5).

 Fan openings not blocked

 Specifications of the power supply correspond with

the data on the pump’s/the electrical supply unit’s
type plate.

 The pump outlet is not closed or constricted.

 When using two vacuum controllers: The media

are compatible with each other (when running two
different processes simultaneously)

 When using a gas ballast: No explosive or

poisonous mixtures may be produced when
ventilating the vacuum system through the air inlet.

 All cables attached properly

 Make sure the pumps are not used improperly (see chapter

2.2, page 5).

 Observe the safety precautions (see chapter 3, page 6).

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 33

Operation LABOPORT Pumps and Systems

Only throttle or regulate the air or gas quantity in

When the operation of the pump is interrupted by the

the

event of power failure, remove the pump’s mains

Hazard of the pump head bursting due to excessive
pressure increase

 Do not exceed max. permissible operating

WARNING

pressure (see chapter 5.1, page 10).

 Monitor pressure during operation.

 If the pressure exceeds the maximum permissi-

ble operating pressure, immediately shut down
pump and eliminate fault (see chapter 10, page

42).



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 suctions sides of the pump. For
further information, contact our technical adviser.

Pump standstill

 With the pump at a standstill, open pressure and suction lines

to normal atmospheric pressure.

Automatic starting can cause personal injury and
pump damage

WARNING

thermal switch, the pump will restart automatically
after cooling down.

 After triggering of the thermal protection or in

34 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

plug from the socket so that the pump cannot
start uncontrollably.

 Attempt work on the pump or system only if the

pump/system is separated from mains power.

LABOPORT Pumps and Systems Operation

on. This also applies in operation following a brief power

water connection or recirculated cooling system.

8.2. Switching Pump/System on and off

Switching pump on

The pump may not start up against overpressure during
switch­failure. 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. 2/19)

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 9.2.1, page 37).

 Switch off pump with mains switch (see fig. 2/19).

 Open pressure and suction lines to normal atmospheric pres-

sure.

Tools and material

 Disconnect the power source.

8.3. Notices related to System Operation

8.3.1. Separators

You can move the holders for the separator vessels after
loosening the attachment screw.

8.3.2. High Performance Condenser

Danger of high performance condenser bursting

 Make sure that the high performance

condenser’s upper gas outlet is not blocked.

CAUTION

A high performance condenser may be used only with a cold-

Adjustment of the high performance condenser altitude level

Qty Material
1 Allen key 5 mm

Tab. 23

1. Loosen the both allen screws at the foot of the high perfor­mance condenser.

2. Remove the high performance condenser’s clamp assembly in

3. Retighten the allen screws.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 35

the support mounting slot.

Operation LABOPORT Pumps and Systems

Make sure that no reactive or explosive mixtures

of reactive, explosive or

The gas ballast is adjusted with the button

open

8.3.3. Vacuum Controller

Personal injury caused by poisoning or explosion
and damage to the pump.



WARNING

will be produced when ventilating the vacuum
system through the air inlet.

 Make sure that the media are compatible with

each other (when running two different
processes simultaneously).

Use the mains switch to switch the vacuum controller on and
off.

Each vacuum controller can be set individually and will work
independently of the other.

Refer to the vacuum controller’s operating instructions for more
information.

8.3.4. Gas Ballast

closed

Fig. 20: Gas ballast operating

knob

Personal injury caused by poisoning or explosion
and damage to the pump.

 Ensure that the creation

WARNING

otherwise hazardous mixtures during the supply
of air is prevented.

If the gas ballast valve is open the maximum achievable vacu­um level is reduced.
(see fig. 20).

36 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Servicing

9. Servicing

9.1. Servicing Schedule

Component Servicing interval
Pump/system Regular inspection for external damage or

leaks

Diaphragm and
valve
plates/sealings

Tab. 24

9.2. Cleaning

When cleaning, make sure that no liquids enter the inside of
the housing.

9.2.1. Flushing Pump

 Before switching off the pump, flush it with air (if necessary for

safety reasons: with an inert gas) for about five minutes under
atmospheric conditions (ambient pressure).

9.2.2. Cleaning Pump

Replace at the latest, when pump output
decreases

 Only clean pump with a damp cloth and non-flammable clean-

ing agents.

9.2.3. Emptying and Cleaning the Separator

1. Unscrew the connecting nozzles (fig. 2/8, page 8).

2. Remove separator (fig. 2/14) from the holder (fig. 2/15) and
dispose of contents according to applicable regulations in your
area. Then rinse out the separator.

3. Replace separator into the holder.

4. Screw the connecting nozzles back on.

9.2.4. Emptying and Cleaning the Condenser

1. Carefully remove the spring clamp (fig. 2/10) while supporting
the flask (fig. 2/11).

2. Empty and clean the flask – observing safety precautions.

3. Re-connect the flask to the condenser and replace the spring
clamp.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 37

Servicing LABOPORT Pumps and Systems

9.3. Changing Diaphragm and Valve
Plates/Sealings

Conditions

Tools and material

Information on procedure

 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)

Qty Material
1 Phillips-head screwdriver No. 2
1 Service Set (see chapter 11.1, page 46)
1 Felt-tip pen

Tab. 25

 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 indi-

vidual pump heads consecutively.

Health hazard due to dangerous substances
in the pump!

WARNING

Depending on the substance transferred, caustic
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 9.2.1, page

37).

38 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Servicing

mber of diaphragm spacers

Removing pump head

Pump N 842.3 FT.18 has a round shape of head, not a
hexagonal.

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 anticlock­wise, so that the connecting tube can be pulled out.

2. Mark the position of top plate (fig. 24/5), head plate (fig. 24/6),

intermediate plate (fig. 24/8) and adapter relatively to each
other by a drawing line (for two-headed pumps: at both pump
heads) with a felt-tip pen (1). This helps to avoid incorrect as­sembly later.

Fig. 21: Removing pump head

be loosened in the next work step.

3. Loosen the outer screws (5) on the pump head/pump heads.

In version N 842.3 FT.18, twelve (instead of six) screws must

4. Carefully remove pump head / pump heads.

Change diaphragm

Fig. 22: Changing structured

diaphragm

Replace the diaphragms of two-headed pumps consecutively
in order to ensure that the same nu
is used as before.

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 (1) anti-clockwise

using both hands.

3. Replace spacer thick (2) and spacers thin (3) onto the screw

thread of the new diaphragm (same number and order).

4. Screw in the new diaphragm and tighten it by hand.

5. With a two-headed pump: Complete steps 1 through 4 for the

second pump head.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 39

Servicing LABOPORT Pumps and Systems

Change valve plates/sealings

Replacing the valve plates/sealings of two-headed pumps
consecutively.

In version N 842.3 FT.18, three (instead of one) screws must
be loosened in the first work step.

1. Loosen screw(s) (1) in the center of the top plate (2). With a

two-headed pump: loosen the screw(s) from just one pump
head.

2. Remove top plate (2) and head plate (3) from intermediate

plate (5).
Valve plates/sealings are visible.

3. Remove old valve plate/sealings.

Fig. 23: Changing valve

plates/sealings

1

2
3

4
5

6
7

8

Fig. 24: Refitting pump head

4. Clean intermediate plate (5) carefully (if there should be depos-

its in the recesses in the intermediate plate).

5. Insert new valve plates/sealings (4) in the recesses in the

intermediate plate (5).

6. For two-headed pumps: Carry out the steps 1 to 5 for the

second pump head.

7. Dispose of the old diaphragm(s) 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.

2. Place the intermediate plate (8) with valve plates/sealings on

the adapter in accordance with the felt-tip pen marking.

3. Place the head plate (6) on the intermediate plate (8) in the

position indicated by the guide pin (7).

4. Place the top plate (5) on the head plate (6) in accordance with

the felt-tip pen marking.

5. Gently tighten screws (4) in diagonal order.

In version N 842.3 FT.18, three (instead of one) screws must
be tightened in the next work step.

6. Insert screw(s) (1) with disk springs (2, 3) in the center of the

top plate (5). In doing so, make sure that the disk springs are
arranged properly (see fig. 24).

7. Screw in the screw/screws (1) in the centre of the pump top

plate (5) until it is flush with the top plate (they are flush with
the top plate); then screw one final half turn to tighten.

8. For two-headed pumps: Carry out steps 1 to 7 for the second

pump head.

9. 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.

40 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Servicing

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 121211-121345 07/13 41

Troubleshooting LABOPORT Pumps and Systems

Disconnect the pump power supply before working

10. Troubleshooting

Extreme danger from electrical shock!



on the pump.

DANGER

 Check the pump (see Tab. 26 to 35).

10.1. Pump/System without Vacuum Controller

Pump does not transfer

Cause Fault remedy
No voltage in the power source  Check room fuse and switch on if necessary.

 Make sure the pump is de-energized and secure.

Thermal switch has operated
following to over-heating.

Connections or lines blocked.  Check connections and lines.

External valve is closed or filter
is clogged.

Condensate has collected in
pump head.

Diaphragm or valve plates/
sealings are worn.

Flow rate, pressure or vacuum too low

The system/the pump does not achieve the output specified in the Technical data or the data sheet.
Cause Fault remedy
Condensate has collected in

pump head.

There is gauge pressure on
pressure side and at the same
time vacuum or a pressure
above atmospheric pressure on
suction side.

Pneumatic lines or connection
parts have an insufficient cross
section or they are throttled.

Leaks occur on connections,
lines or pump head.

Connections or lines completely
or partially jammed.

Head parts are soiled.  Clean head components.

 Disconnect pump from mains.
 Allow pump to cool.
 Trace cause of over-heating and eliminate it.

 Remove blockage.
 Check external valves and filters.

 Detach the condensate source from the pump.
 Flush pump (see chapter 9.2.1, page 37).

 Replace diaphragm and valve plates/sealings (see chapter

9.3, page 38).

Tab. 26

 Detach the condensate source from the pump.
 Flush pump (see chapter 9.2.1, page 37).

 Change the pressure conditions.

 Disconnect pump from system to determine output values.
 Eliminate throttling (e.g. valve) if necessary.
 Use lines or connection parts with larger cross section if

necessary.

 Check that tubes sit correctly on hose nozzles.
 Replace leaky tubes.
 Eliminate leaks.

 Check connections and lines.
 Remove the jamming parts and particles.

Diaphragm or valve
plates/sealings are worn.

42 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

 Replace diaphragm and valve plates/sealings,

(see chapter 9.3, page 38).

LABOPORT Pumps and Systems Troubleshooting

Flow rate, pressure or vacuum too low

The system/the pump does not achieve the output specified in the Technical data or the data sheet.
Cause Fault remedy
After diaphragm and valve

plates/sealings have been
replaced.

 Check that the spacers have been replaced onto the dia-

phragm screw thread.

 Check head connection and hose connections.
 Possibly carefully tighten the outer screws (fig. 21/5, page

39) of the top plate crosswise.

Tab. 27

Pump is switched on, but does not run, the on/off-switch on the pump is not lit

Cause Fault remedy
Pump is not connected with the

 Connect pump to mains power.

power source.
No voltage in the power source
Fuse in the pump is defective.

 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 5.1, page 10).

Tab. 28

Pump is switched on, but does not run, the on/off-switch on the pump is lit

Cause Fault remedy
The thermal switch has opened

due to overheating.

 Remove pump’s mains plug from the socket.
 Allow pump to cool.
 Trace cause of over-heating and eliminate it.

Tab. 29

10.2. System with one Vacuum Controller

See also chapter 10.1, pump/system without vacuum
controller, table 26 and 27.

Sufficient vacuum is not reached

Cause Fault remedy
Solid particles in the pump vent

valve
Condensate in pump head

 Clean pump vent valve.

 Let the pumpe run to the ultimate vacuum (Drying Mode, see

Operating Manual of Vacuum Controller).

Tab. 30

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 43

Troubleshooting LABOPORT Pumps and Systems

Vacuum Controller is switched on and set on "Regulation Mode", the desired vacuum level
is not reached, pump does not run, the on/off-switch on the pump is not lit

Cause Fault remedy
Pump is not switched on.
Incorrect electrical connection of

controller

Fuse in the pump is defective.

 Switch on pump.
 Switch off system and separate from power supply.

 Check cabling.
 Remove pump’s mains plug from the socket.
 Loosen marked lid on underside of the pump.
 Select and replace suitable fuse (see chapter 5.1, page 10).

Tab. 31

Vacuum Controller is switched on and set on "Regulation Mode", the desired vacum level is
not reached, pump does not run, the on/off-switch on the pump is lit

Cause Fault remedy
The thermal switch has opened

due to overheating.

 Remove pump’s mains plug from the socket.
 Allow pump to cool.
 Trace cause of over-heating and eliminate it.

Tab. 32

Vacuum Controller is switched on, no LED-indication

Cause Fault remedy
In the electrical supply unit the

vacuum controller plug is
plugged into the socket for the

 Make sure that the vacuum controller’s mains plug is plugged

into the socket (on the electrical supply unit) for vacuum
controllers (see fig. 10, page 26, position 2).

pump.
The fuse in the vacuum control-

ler is defective.

 Switch off system and separate from power supply.
 Select an appropriate fuse (refer to the vacuum controller’s

operating instructions).

 Replace fuse above the circuit closer/circuit breaker.

The fuse in the electrical supply
unit is defect.

 Switch off system and separate from power supply.
 Select suitable fuse (see chapter 5.2, page 17).
 Replace fuse on the front side, below the mains connection.

Tab. 33

Vacuum Controller shows unrealistic values

Cause Fault remedy
The factory-set pressure

 Contact KNF (see page 47).

equalization has changed.
Sensor is defective  Contact KNF (see page 47).

Tab. 34

44 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Troubleshooting

10.3. System with two Vacuum Controllers

See also chapter 10.2, system with one vacuum controller.

System does not work, despite one Vacuum Controller (both controllers) being set on "Reg­ulation Mode"

Cause Fault remedy
In the electrical supply unit the

connecting wires for the vacuum
controllers are plugged in incor­rectly.

In the electrical supply unit the
connecting wires for the vacuum
valve are plugged incorrectly.

 Exchange the plugs between vacuum controller 1 and vacu-

um controller 2.

 Exchange the plugs between vacuum valve 1 and vacuum

valve 2.

Tab. 35

10.4. 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 ag-

gressive gases (see chapter 9.2.1, page 37).

2. Remove the pump.

3. Clean the pump (see chapter 9.2.2, page 37).

4. Send the pump to KNF with a filled out decontamination decla-

ration (see chapter 12) and specification of the medium trans­ferred.

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 45

Ordering Information LABOPORT Pumps and Systems

11. Ordering Information

11.1. Pumps and Spare Parts

A service set contains:
 1 diaphragm and 2 valve plates/sealings for one-headed

pumps

 2 diaphragms and 4 valve plates/sealings for two-headed

pumps

Pump type Order-No. pump Order-No. Service Set
N 810 FT.18 057986 058077
N 820 FT.18 057901 058078
N 840 FT.18 057911 058079
N 810.3 FT.18 057500 057357
N 820.3 FT.18 057501 057358
N 840.3 FT.18 057502 057359
N 840.1.2 FT.18 057571 057359
N 842.3 FT.18 057634 057359

Tab. 36

11.2. Accessories for Pump Systems

Accessory

Baseplate and mounting
Baseplate and mounting
Separator complete including tray
High performance condenser (in-

cluding support)
Gas ballast
Gas ballast
Vacuum controller (including support

and electrical supply unit)
Vacuum controller (including sup-

port) *
Two vacuum controllers (complete

including support and electrical
supply unit)

Vacuum chemical tubing for pneu­matic connection** (yard ware***)

Tab. 37 * For retrofitting from system SC to SCC
** Material: Norprene A60G
*** Please specify the required length (in whole meters).

Type

N 810 FT.18

N 820 FT.18

N 840 FT.18

N 810.3 FT.18

N 820.3 FT.18

N 840.3 FT.18

NP 810/820 X X X X 028129
NP 840 X X X X 028128
NR 800 X X X X X X X X 026225
NH 800

NG 810 X 028476
NG 820/840 X X X 028477
NC 800A

NC 800B

NC 800A/B

X X X X X X X X 026231

X X X X X X X X 046380

X X X X X X X X 046381

X X X X X X X X 046382

X X X X X X X X 028187

N 840.1.2 FT.18

Order-No.

N 842.3 FT.18

46 Translation of original Operating Instructions, english, KNF 121211-121345 07/13

LABOPORT Pumps and Systems Decontamination Declaration

12. Decontamination Declaration

The condition for the repair of a pump by KNF is the certifica­tion of the customer on the transferred media and on the
cleaning of the pump (decontamination declaration).

 Copy this page.

 Enter the pump model, the Serial No. and the transferred

media in the form below and sent the signed form together with
the flushed and cleaned pump to KNF Customer Service (see
last page for the address).

Customer decontamination declaration for
repair order

We herewith confirm that the following media have been pumped
with the pump listed below, and that the pump has been flushed
and cleaned.

Pump model

Serial No.

Fed media

The pump contains neither aggressive, biological, radioactive,
poisonous nor other dangerous media.

Company

Translation of original Operating Instructions, english, KNF 121211-121345 07/13 47

Date/Signature

KNF worldwide

Benelux

Netherlands

KNF Verder B.V.

Utrechtseweg 4a
NL-3451 GG Vleuten
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf-verder.nl

Benelux

Belgium, Luxembourg

KNF Verder N.V.

Kontichsesteenweg 17
B-2630 Aartselaar
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.be

China

KNF Neuberger Trading

(Shanghai) Co., Ltd
No. 36 Lane 1000
Zhang Heng Road
Shanghai 201203, P.R. China
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.com.cn

Germany

KNF Neuberger GmbH

Alter Weg 3
D-79112 Freiburg
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.de

France, Morocco,
Algeria

KNF Neuberger

4, Bld. d’Alsace Z.I.
F-68128 Village-Neuf
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.fr

Great Britain

KNF Neuberger U.K. Ltd.

Avenue 2
Station Lane
Industrial Estate
Witney Oxon OX28 4FA
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.co.uk

India

KNF Pumps + Systems
(India) Pvt. Ltd.

RAJIV GANDHI INFOTECH
PARK
Phase 1
Ganga Estate, Survey No. 152/2/2
Above AXIS BANK
Hinjewadi
Pune 411 057
Tel. [phone]
0091 (0)20 640 08 923
Fax [phone]
E-mail: [e-mail]

www.knfpumps.in

Italy

KNF ITALIA S.r.l.

Via Flumendosa, 10
I-20132 Milano
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.it

Japan

KNF Japan Co.Ltd.

Across Shinkawa Bldg. Annex 3F
1-16-14 Shinkawa, Chuo-ku,
Tokyo, Japan 104-0033
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.co.jp

Korea

KNF Neuberger Ltd.

Woosan Bldg.RM#202,
336-4, Hwikyung-Dong
Dongdaemun-Ku.,
130-090, Seoul
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knfkorea.com

Sweden, Denmark,
Finland, Norway

KNF Neuberger AB

Mejerivägen 4,
P.O. Box 44060
SE-10073 Stockholm
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.se

Switzerland

Sales

KNF Neuberger AG

Stockenstrasse 6
CH-8362 Balterswil
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.ch

Taiwan

KNF Neuberger Ltd.

9-2 FL., No., 24, Lane 123,
Section 6,
Ming Chuan East Road
Taipei City, Taiwan
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knftwn.com.tw

USA, Canada, South America

KNF NEUBERGER, INC.

Two Black Forest Road
Trenton, New Jersey
08691-1810
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knfusa.com

South America
Direct Phone: [phone]
1010
E-mail: [e-mail]

KNF product centres

Product centre for gas
pumps:

Germany

KNF Neuberger GmbH

Alter Weg 3
D-79112 Freiburg
Phone [phone]
Fax [phone]
E-mail: [e-mail]

www.knf.de

Product centre for fluid
pumps:

Switzerland

KNF FLODOS AG

Wassermatte 2
CH-6210 Sursee
Phone [phone]
Fax [phone]
E-mail: [e-mail]

www.knf-flodos.ch

Product centre for micro
pumps:

Switzerland

KNF Micro AG

Zelglimatte 1b
CH-6260 Reiden
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

www.knf-micro.ch