KNF PJ25481-950.50.18 User manual

Pump module
MANUAL
Appliance sizes
PM/PMP 29
PM/PMP 49
PM/PMP 101
100% ATMOSAFE.MADE IN GERMANY
www.memmert.com I www.atmosafe.net
1
00%
ATM
O

2
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
About this manual
Purpose and target audience
This manual, together with the operating manual for the MEMMERT vacuum oven, describes
how to use and put into operation the MEMMERT pump module. Pump modules can be pur-
chased with or without a pre-installed vacuum pump.
The manual contains the original maintenance and operating manual for the membrane vacu-
um pump, which may have been installed, from the company KNF.
The pump module may only be used in combination with the MEMMERT vacuum oven VO or
VOcool. All information in terms of safety instructions, assembly, function, transport, putting
into operation, operation, troubleshooting, maintenance and decommissioning/disposal can be
found in the operating manual for the vacuum oven VO.
This manual is intended for use by trained personnel of the owner, who have the task of ope-
rating and/or maintaining the respective appliance. If you are asked to work on the appliance,
read this manual carefully before starting.
Familiarise yourself with the safety regulations. Only perform work that is described in this ma-
nual. If there is something you do not understand, or certain information is missing, ask your
manager or contact the manufacturer. Do not do anything without authorisation.
Other documents to be observed as applicable:
►The operating manual for the MEMMERT vacuum oven VO
►The original maintenance and operating manual for the vacuum pump from KNF
Storage and resale
This operating manual belongs with the appliance and should always be stored where per-
sons working on the appliance have access to it. It is the owner's responsibility to ensure that
persons who are working on or are going to work on the appliance know where to find the
operating manual. We recommend that it is always stored in a protected location close to the
appliance. Make sure that the operating manual is not damaged by heat or humidity. If the
appliance is resold or transported and then set up again at a different location, the operating
manual must remain with it.
The current version of this operating manual in PDF format is also available for download from
http://www.memmert.com/en/service/downloads/user-manual/.

3
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
Safety regulations
After removing covers, live parts may be exposed. Touching these can lead to an
electric shock. Disconnect the mains plug before removing any covers. Work on
the electrical system must only be performed by qualified electricians.
Toxic gases or vapours may be produced in certain applications. These
can escape from the vacuum pump into the room. This can injure people
nearby. The appliance may only be used for such applications if a suction
is attached to the vacuum pump used, which reliably keeps toxic gases or
vapours away from people. Observe the respective national regu-lations for
occupational safety and environmental protection.
NOTICE
The operating manual of the MEMMERT vacuum oven contains important
information and instructions how to use the pump module. Followall pos-
sible information from the related operating manual of the vacuum oven
exactly.
WARNING
WARNING

4
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
Intended use
The appliance may only be used to accommodate and control a vacuum pump by means of a
MEMMERT vacuum oven VO29, VO49 or VO101. Any other use is improper and may result in
hazards and damage.
Changes and alterations
No unauthorised changes or alterations may be made to the appliance. No parts may be added
or inserted which have not been approved by the manufacturer.
Unauthorised changes or alterations result in the CE declaration of conformity losing its validity,
and the appliance may no longer be operated.
The manufacturer is not liable for any damage, danger or injuries that result from unauthorised
changes or alterations, or from non-compliance with the provisions in this manual.
Requirements of the operating personnel
The appliance may only be operated and maintained by persons who are of legal age and have
been instructed accordingly. Personnel who are to be trained, instructed or who are undergo-
ing general training may only work with the appliance under the continuous supervision of an
experienced person.
Repairs may only be performed by qualified specialists. The provisions in the operating and
installation manual from KNF also need to be observed.
Behaviour in case of malfunctions and irregularities
The appliance may only be used in a flawless condition. If you as the operator notice irregula-
rities, malfunctions or damage, immediately take the appliance out of service and inform your
superior.
Switching off the appliance in
an emergency
Press the main switch on the pump module.
This disconnects the appliance from the
power supply at all poles.

5
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
Putting into operation
When operating the appliance for the first time, do not leave it unattended until it has reached
a steady state.
Connecting the vacuum pump
►Connect the vacuum pump's
230 V plug with earthing con-
tact to the internal socket in
the pump module.
Connecting the appliance
Caution:
For connection, please observe
the national regulations. Observe
the connection and power ratings
(see nameplate and technical
data).
Make sure to establish a safe PE
conductor connection.
Place the power cable so that
►it is easily accessible at all times
and can be pulled out quickly,
for example in case of a mal-
function or emergency;
►it does not represent a trip
hazard;
►it cannot come into contact
with any hot parts.

6
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
Connecting the vacuum pump to the VO
The connection for the signal lead
(left) and the connection for the
vacuum hose (right) can be found
at the rear of the PM.
Connect the vacuum oven and the
pump module to the signal lead
and the vacuum hose as described
in the operating manual for the
MEMMERT vacuum oven.
Switching on
►Press the main switch for the
vacuum pump.
►Press the main switch for the
pump module.

7
MEMMERT GmbH + Co. KG
Willi-Memmert-Strasse 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Fax: [phone]
Email: [email protected]
© 2018 Memmert GmbH + Co. KG
Maintenance and cleaning
Depending on the customer process, condensate may accumulate in the
collection container of the pump module. No condensate can be sucked in
by the pump. Check and empty the container regularly.
Emptying the collection container
►Unscrew and remove the
ducts from the collection
container.
►Remove the collection con-
tainer from the holder and
empty it.
►Insert the collection container
into the holder and attach
the ducts.

8
MEMMERT GmbH + Co. KG
Willi-Memmert-Straße 90-96
D-91186 Büchenbach
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.memmert.com
Customer service:
Hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
© 2018 Memmert GmbH + Co. KG
Technical data
Appliance size 29 49 101
Appliance width D [mm] 550 550 710
Appliance height E [mm] 600 680 760
Appliance depth F [mm] 400 480 550
Depth of door lock [mm] 38
Weight without/with pump [kg] 25/33 30/38 41/49
Power [W]* 140
Current consumption [A]* 1.9
*All other technical data can be found in the operating and installation manual for the KNF
pump which follows
Spare parts and service
In the event of a malfunction or if the pre-installed membrane vacuum pump requires mainte-
nance or service work, contact the Customer Service department at Memmert.
The spare parts required for complete maintenance of the pump head are available from
Memmert under the following order number:
►E07534 spare parts kit for membrane.
Operating and installation information
Information about the assembly and functionality of the pre-installed KNF vacuum pump
N950.50 KNE-W can be found in the manufacturer's original operating manual (provided).

KNF 125530-316634 06/18
LAB
PJ25481-950.50.18
TRANSLATION OF ORIGINAL INSTALLATION
INSTRUCTIONS
ENGLISH
DIAPHRAGM PUMP
Note!
Before operating the pump and the accessories, please read the operating instructions and pay attention to
the safety precautions!

Contents Page
1. About this document.................................................................3
2. Use............................................................................................4
3. Safety........................................................................................6
4. Technical Data..........................................................................8
5. Design and function................................................................10
6. Installation and connection.....................................................11
7. Operation................................................................................15
8. Servicing.................................................................................20
9. Troubleshooting......................................................................28
10. Returns .................................................................................300
11. Health and safety clearance and decontamination form......311
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Phone [phone]
Fax [phone]
E-mail: [e-mail]
www.knf.de

Diaphragm pump PJ25481-950.50.18 About this document
Original-Installation Instructions, english, KNF 125530-316634 06/18 3
1. About this document
1.1. Using the Installation Instructions
The Installation Instructions are part of the pump.
Carefully study the Installation Instructions before using the
pump.
Always keep the Installation Instructions handy in the work
area.
Pass on the Installation Instructions to the next owner.
1.2. Symbols and markings
Warning
WARNING
A danger is located here.
Possible consequences of a failure to observe the
warning are
specified here. The signal word, e.g.
Warning, indicates the danger level.

Measures for avoiding the danger and its conse-
quences are specified here.
Danger levels
Signal word
Meaning
Consequences if not observed
DANGER
warns of immedi-
ate danger
Death or serious injuries and/or
serious damage are the conse-
quence.
WARNING
warns of possible
danger
Death or serious injuries and/or
serious damage are possible.
CAUTION
warns of a possi-
bly dangerous
situation
Minor injuries or damage are
possible.
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.

Use Diaphragm pump PJ25481-950.50.18
4 Translation of original Installation Instructions, english, KNF 125530-316634 06/18
2. Use
2.1. Proper use
The pumps are exclusively intended for transferring gases and va-
pors.
Owner’s responsibility
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 pro-
tected against rain, splash, hose and drip water as well as other
pollutions.
The gas-tightness of the connections between the application
pipes and the pump (or the pump connection) must be checked
regularly; with leaky connections, there is a danger that hazardous
gases or vapors may escape from the pump system.
Before using a medium, check whether the medium can be trans-
ferred 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.
Laboratory equipment or additional components connected to a
vacuum pump system have to be suitable for use with the pneu-
matic capabilities of the pump. (see Chapter 4. Technical Data).
Operating parameter and
conditions
Requirements for
transferred medium
Accessories

Diaphragm pump PJ25481-950.50.18 Use
Translation of original Installation Instructions, english, KNF 125530-316634 06/18 5
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 are not suitable for transferring aerosol.
The pumps are not suitable for transferring biological and microbio-
logical substances.
The pumps are not suitable for transferring fuel.
The pumps are not suitable for transferring explosive and combus-
tible materials.
The pumps are not suitable for transferring fibers.
The pumps are not suitable for transferring oxidizing agent.
The pumps are not suitable for transferring foodstuffs.
The pumps must not be used to create vacuum and overpressure
simultaneously.
Pumps designed to create either a vacuum or an overpressure
must not be used for these two purposes simultaneously.
An overpressure must not be applied to the suction side of the
pump.

Safety Diaphragm pump PJ25481-950.50.18
6 Translation of original Installation Instructions, english, KNF 125530-316634 06/18
3. Safety
Note the safety precautions in Chapter 6. Installation and con-
nect
ion and 7. Operation.
The pumps are built according to the generally recognized rules of
the 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 Installation Instructions, at all times.
Components connected to the pump must be designed to with-
stand the pneumatic performance of the pump.
Take care that safety regulations are observed when connecting
the pump to the electricity supply.
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 Instal-
lation Instructions, and in particular the “Safety” chapter.
Observe the accident prevention and safety regulations when per-
forming any work on the pump and during operation.
Do not expose any part of your body to the vacuum.
Ensure that the pump is separated from the mains and is de-ener-
gized.
The pump heads heat up during operation – avoid contact with
them.
Make sure that there are no hazards due to flow with open gas
connections, noises or hot gases.
Ensure that an EMC-compatible installation of the pump is ensured
at all times and that this cannot lead to a hazardous situation.
When transferring dangerous media, observe the safety regula-
tions when handling these media.
If the diaphragm ruptures, the transferred medium will mix with the
air in the environment.
Take all necessary care to prevent this leading to a dangerous situ-
ation.
Be aware that the pumps are not designed to be explosion-proof.
Make sure the temperature of the medium is always sufficiently be-
low the ignition temperature of the medium, to avoid ignition or ex-
plosion. This also applies for unusual operational situations.
Note that the temperature of the medium increases when the pump
compresses the medium.
Personnel
Working in a safety
conscious manner
Handling dangerous media
Handling combustible media

Diaphragm pump PJ25481-950.50.18 Safety
Translation of original Installation Instructions, english, KNF 125530-316634 06/18 7
Hence, make sure the temperature of the medium is sufficiently be-
low the ignition temperature of the medium, even when it is com-
pressed to the maximum permissible operating pressure of the
pump. The maximum permissible operating pressure of the pump
is stated in the technical specifications (Chapter 4).
If necessary, consider any external sources of energy, such as ra-
diation, that may add heat to the medium.
In case of doubt, consult the KNF customer service.
Store all replacement parts in a protected manner and dispose of
them properly in accordance with the applicable environmental pro-
tection regulations. Observe the respective national and interna-
tional regulations. This especially applies to parts contaminated
with toxic substances.
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 DIN EN 60664-1:
The overvoltage category II
The pollution degree 2
The pump is maintenance-free. But KNF recommends, checking
the pump regularly with regard to conspicuous changes in noise
and vibrations.
Only have repairs to the pumps carried out by the KNF Customer
Service responsible.
Housing with voltage-caring parts may be opened by technical per-
sonnel only.
Use only genuine parts from KNF for servicing work.
Use only the original KNF power supply.
Environmental protection
Standards
Customer service and
repairs

Technical Data Diaphragm pump PJ25481-950.50.18
8 Translation of original Installation Instructions, english, KNF 125530-316634 06/18
4. Technical Data
Pump materials
Assembly
Material
Diaphragm
PTFE coated
Valve plates
FFPM
O-ring
FPM (head 1-3)
FFPM (head 4)
Head plate
PPS
Intermediate plate
PPS
Tab. 2
Pneumatic values
Parameter
Value
Max. permissible operating
pressure [bar g]
-
Ultimate vacuum [mbar abs.]
with closed gas ballast
2.0
Delivery rate at atm. pressure
and 5V control voltage [l/min]*
55.0
Tab. 3 *Liters in standard state (1013 mbar)
Pneumatic Connections
Pump type
Value
PJ25481-950.50.18
Hose ID 10
Tab. 4
Electrical data
Parameter
Value
Automatic voltage selection
100-240 V
50 – 60 Hz
Max. current consumption [A]
1.9
Max. power consumption [W]
140
Maximum permitted mains
voltage fluctuations
± 10%
Protection class Motor
IP 20
Protection class Pump
IP 20
Tab. 5
The pump is supplied by a universal power supply with inte-
grated overload
protection.
They are protected against overheating by a temperature sen-
sor on the motor board and equipped with overcurrent protec-
tion.
If one of these safety functions is triggered, the pump will
be
shut down and must be manually reset, as follows:

Separate pump from mains.
Remove the cause(s) of the fault before restarting.

Diaphragm pump PJ25481-950.50.18 Technical Data
Translation of original Installation Instructions, english, KNF 125530-316634 06/18 9
Weight
Pump type
Value
PJ25481-950.50.18
Approx. 7.2 kg
Tab. 6
Other parameters
Parameter
Value
Permissible ambient tempera-
ture
+ 10°C to + 40°C
Permissible media tempera-
ture
+ 5°C to + 40°C
Dimensions
See Fig. 3, Chapter 6.1
Maximum permissible ambient
relative humidity
80% for temperatures up to
31°C, decreasing linearly to
50% at 40°C.
Max. altitude of site:
[m above sea level]
2000
Tab. 7

Design and function Diaphragm pump PJ25481-950.50.18
10 Translation of original Installation Instructions, english, KNF 125530-316634 06/18
5. Design and function
Design
Fig. 1: Design PJ25481-950.50.18
Function Diaphragm Pump
Fig. 2: Pump head
Diaphragm pumps transfer, compress (depending on pump ver-
sion) and evacuate gases and vapors.
The elastic diaphragm (4) is moved up and down by the eccentric
(5) and the connection 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.
1 Inlet (suction side)
2 Outlet (pressure side)
3 Power switch, removable
mains cable
4 Sub-D-plug (motor control)
1 Outlet valve
2 Inlet valve
3 Transfer chamber
4 Diaphragm
5 Eccentric
6 Connection rod
7 Pump drive

Diaphragm pump PJ25481-950.50.18 Installation and connection
Translation of original Installation Instructions, english, KNF 125530-316634 06/18 11
6. Installation and connection
Only install and operate the pumps under the pneumatic operating
parameters and conditions described in Chapter 4, Technical Data.
Observe the safety precautions (see Chapter 3).
6.1. Installation of the pump
Choose a safe location (flat surface) for the pump.
Before installation, store the pump at the installation location to
bring it up to ambient temperature.
See Fig. 3 for mounting dimensions.
Fig. 3: Mounting dimensions PJ25481-950.50.18 (All dimensional toler-
ances conform to DIN ISO 2768-1, Tolerance Class V)
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 as well as
other pollutions.
Make sure, that the installation location is accessible for
maintenance and service.
The IP protection class of the pump motor is indicated on the
type plate.
Install the pump at the highest point in the system to prevent
condensate from collecting in the pump head.
Protect the pump from dust.
Mounting dimensions
Cooling air supply
Installation location

Installation and connection Diaphragm pump PJ25481-950.50.18
12 Translation of original Installation Instructions, english, KNF 125530-316634 06/18
Protect the pump against grease and oils.
Protect the pump from vibrations and jolts.
WARNING
Personal injury and/or damage to property because
of vibration
In conjunction with adjacent components, vibration of
the pump may result in crushing and/or damage to
these components.

Make sure that vibrations of the pump do not re-
sult in hazards associated with adjacent compo-
nents.
Protect the pump against contact and intrusion of foreign mat-
ter.
Foreign matter protection