M&C MP-F Series User manual

Bellows pump series MP®-F
MP-F05/EX, MP-F05/R/EX,
MP-F10/EX, MP-F10/R/EX
(Valid as of Serial No. 21021130)
Instruction Manual
Version 1.05.04

2MP-F…/EX | 1.05.04 www.mc-techgroup.com
Dear customer,
Thank you for buying our product. In this manual you will find all necessary information about this M&C product.
The information in the manual is fast and easy to find, so you can start using your M&C product right after you have
read the manual.
If you have any question regarding the product or the application, please don’t hesitate to contact M&C or your
M&C authorized distributor. You will find all the addresses in the appendix of this instruction manual.
For additional information about our products, please go to M&C’s website www.mc-techgroup.com. There you
can find the data sheets and manuals of our products in German and English.
Disclaimer
This instruction manual does not
claim to be complete and it may be sub-
ject to technical modifications.
.
© 0
6/2022 M&C TechGroup Germany GmbH.
The reproduction of this instruction
manual as well as parts of the content are not permitted and are subject to ap-
proval by M&C
TechGroup.
MP
®is a registered trade mark.
Version; 1.05.0
4
The original instruction manual is in German.

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Table of Contents
1Important product information: new drive motor..........................................................................................4
2General information.............................................................................................................................................4
3Declaration of conformity ...................................................................................................................................5
4Warranty.................................................................................................................................................................5
5Warning signs and definitions............................................................................................................................6
6Correct operation .................................................................................................................................................8
7Wrong operation ..................................................................................................................................................9
8Safety instructions for using the pump in potentially explosive atmospheres .......................................10
9Application ..........................................................................................................................................................10
9.1 MP-F05/R/EX and MP-F10/R/EX with integrated needle valve .................................................................................................11
10 Technical data .....................................................................................................................................................13
10.1 Pump capacity .........................................................................................................................................................................................................15
10.2 Dimensions ................................................................................................................................................................................................................15
11 Receiving and storing the bellows pump.......................................................................................................16
12 Installation instructions.....................................................................................................................................17
12.1 Installation in potentially explosive atmospheres..............................................................................................................................19
12.2 Mounting the pump ............................................................................................................................................................................................21
12.3 Rotating the pump head...................................................................................................................................................................................22
12.4 Routing the gas outlet tubing with a downward slope.................................................................................................................22
12.5 Electrical connections .........................................................................................................................................................................................23
12.6 Motor protection circuit breaker for motor II 2 G Ex db flameproof enclosure...............................................................24
12.7 Pneumatic connections.....................................................................................................................................................................................28
13 Start up.................................................................................................................................................................29
14 Operating the pump ..........................................................................................................................................30
15 Decommissioning...............................................................................................................................................30
16 Disassembly.........................................................................................................................................................31
17 Maintenance........................................................................................................................................................32
17.1 Replacing the valve plates................................................................................................................................................................................34
17.2 Replacing the bellows.........................................................................................................................................................................................35
17.3 Cleaning instructions...........................................................................................................................................................................................36
18 Trouble shooting ................................................................................................................................................37
19 Proper disposal of the device ...........................................................................................................................38
20 Accessories: motor protection circuit breaker...............................................................................................38
21 Spare parts list.....................................................................................................................................................38
22 Appendix..............................................................................................................................................................40
Table of Figures
Figure 1 Needle valve in a half-section view with one quarter removed ....................................................................................12
Figure 2 Pump with bypass needle valve ........................................................................................................................................................12
Figure 3 Pump capacity MP-F.../EX.......................................................................................................................................................................15
Figure 4 Dimensions MP-F.../R/EX.........................................................................................................................................................................15
Figure 5 Installing the MP-F.../R/EX......................................................................................................................................................................21
Figure 6 Rotating the pump head........................................................................................................................................................................22
Figure 7 Pump head facing down: install outlet tubing with a downward slope..................................................................23
Figure 8 Wiring diagram: 3-phase motor protection circuit breaker connection to 1-phase motor..........................25
Figure 9 Motor protection characteristic, tripping: 1.2 times setting current, within 2 hrs. .............................................26
Figure 10 Electrical connection...........................................................................................................................................................................27
Figure 11 Ground wire connection to the motor....................................................................................................................................27
Figure 12 Pneumatic connections.....................................................................................................................................................................28
Figure 13 Sectional drawing MP-F../EX...........................................................................................................................................................34

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Headquarters
M&C TechGroup Germany GmbH Rehhecke 79 40885 Ratingen Germany
Phone: +49 - 2102 - 935 - 0
E - Mail: [e-mail]
Website: www.mc-techgroup.com
1Important product information: new drive motor
Our longtime supplier, the company ATB, has stopped the production of our drive motors. For this reason the MP-
F/EX pumps will be delivered with a new drive motor from the company ORANGE1 ELECTRIC MOTORS S.p.A. start-
ing with serial No. 21021130.
The new drive motor has a new Ex-protection class. The Ex-protection type changes as follows:
•Old ATB drive motor: II 2 G Ex eq IIC T3
•New ORANGE1 ELECTRIC MOTORS drive motor: II 2 G Ex db eb IIC T4.
The new drive motor, including the operating capacitor, is designed in the "flameproof enclosure" (db) type of
protection. The terminal box has the ignition protection type "Increased safety" Ex "eb".
Note
The changed temperature class (T4) has no effect on the temperature class
of the entire pump, which remains unchanged T3.
The new motor does not bring any changes for you as a user. One advantage of the new motor is that it is suitable
for the frequency range from 50 to 60 Hz.
The options previously offered for 115 V/50 Hz (Part No. 05P1140) and 230 V/60 Hz (Part No. 05P1142) no longer
apply.
2General information
The product described in this instruction manual has been built and tested in our production facility.
All M&C products are packed to be shipped safely. To ensure the safe operation and to maintain the safe condition,
all instructions and regulations stated in this instruction manual need to be followed. This instruction manual in-
cludes all information regarding proper transportation, storage, installation, operation and maintenance of this
product by qualified personnel.
Follow all instructions and warnings closely.
Read this manual carefully before commissioning and operating the device. If you have any questions regarding
the product or the application, please don’t hesitate to contact M&C or your M&C authorized distributor.

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3Declaration of conformity
CE - Certification
The product described in this operating manual complies with the following EU directives:
ATEX-Directive
The product described in this manual is produced in accordance with the EU directive for devices and protection
systems for appropriate use in hazardous areas 2014/34/EU appendix II.
Machinery Directive
The requirements of the EU directive 2006/42/EC are met. The compliance with this EU directive has been examined
according to DIN EN 60204-1.
RoHS Directive
The requirements of the RoHS2 (‘Restriction of Hazardous Substances 2’) directive 2011/65/EU and its annexes are
met.
Declaration of conformity
The EU Declaration of conformity can be downloaded from the M&C homepage or directly requested from M&C.
4Warranty
In case of a device failure, please contact immediately M&C or your M&C authorized distributor.
We have a warranty period of 12 months from the delivery date. The warranty covers only appropriately used prod-
ucts and does not cover the consumable parts. Please find the complete warranty conditions in our terms and
conditions.
The warranty includes a free-of-charge repair in our production facility or the free replacement of the device. If you
return a device to M&C, please be sure that it is properly packaged and shipped with protective packaging. The
repaired or replaced device will be shipped free of delivery charges to the point of use.

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5Warning signs and definitions
Danger
The ‘Danger’ warning sign indicates that death, serious injury and/or significant ma-
terial damage will be the consequence, if the appropriate precautions should not
be taken.
Warning
The ‘Warning’ warning sign indicates that death, serious injury or damage to prop-
erty may occur, if the relevant precautionary measures are not observed.
Caution
The ’Caution’ warning sign indicates that slight personal injury can occur, if the ap-
propriate safety precautions are not ob-served.
Caution ’Caution‘ indicates that damage to property can occur, if the appropriate safety
precautions are not observed.
Note
‘Note’ indicates important information relating to the product or highlights parts of
the documentation for special attention.
Qualified personnel
These are persons who are familiar with the installation, commissioning, mainte-
nance and operation of the product and have the necessary qualifications through
training or instruction. Qualified personnel must have at least the following
knowledge:
•Instructed person in EX-protection
•Trained person in the electrotechnical field
•Detailed knowledge of the operating instructions and the applicable safety
regulations
‘EX‘ indicates important information about the product or about the corresponding
parts in the instruction manual, relating to usage in potentially explosive atmos-
pheres.
High voltages!
Protect yourself and others against damages which might be caused by high volt-
ages.
Toxic!
Acute toxicity (oral, dermal, inhalation)! Toxic when in contact with skin, swallowed
or inhaled.
Corrosive!
These substances destroy living tissue and equipment upon contact.
Do not breathe vapors; avoid contact with skin and eyes.

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Wear protective gloves!
Working with chemicals, pointed objects or extremely
high temperatures requires
wearing protective gloves.
Wear safety glasses!
Protect your eyes while working with chemicals or pointed
objects. Wear safety
glasses to avoid getting something in your eyes.
Wear protective clothes!
Working with chemicals, pointed objects or extremely
high temperatures requires
wearing protective clothes.

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6Correct operation
Follow these fundamental safety precautions during installation, commissioning and operation of the de-
vice:
•Read this instruction manual before commissioning and operating the product. Make sure to follow all
warnings and safety instructions.
•Installation and commissioning of electrical devices must be carried out only by qualified skilled personnel
in compliance with the current regulations.
•The installation and commissioning of the device must conform to the requirements of VDE 0100 ‘Regula-
tions on the Installation of Power Circuits with Nominal Voltages below 1000 V’ and must be in compliance
with all relevant regulations and standards.
•Attention should be paid to all relevant national and international regulations and standards regarding the
usage of the device in potentially explosive atmospheres.
•Before connecting the device, please make sure to compare the supply voltage with the specified voltage
on the product label.
•Protection against contact to components carrying high voltages: Disconnect the power supply before
opening the device for access. Make sure that all extern power supplies are disconnected.
•Operate the device only in the permitted temperature and pressure ranges. For details please refer to the
technical data sheet or instruction manual.
•Install the device only in protected areas, sheltered from sun, rain and moisture. Avoid heat sources nearby.
•If an operation involves sample gases, which are toxic and hazardous to the health, protective measures
need to be taken against any accidental leakage, e.g. unexpected damage of the pump bellows, the related
tubing or tube connections.
•To troubleshoot failing or decreasing pump performance, we recommend installing a flow monitoring de-
vice downstream from the pump.
•The pump is only designed for sample gases, which are not contaminated with particles. It might be nec-
essary to install a suitable particle filter upstream of the pump.
•The pump is not designed for liquid. To protect the pump against condensate, a cooler might be necessary
to be installed upstream of the pump.
•Only gas or gas mixtures can be used, which do not react with each other or with materials of the pump
components.
•Installation, maintenance, inspections and any repairs of the devices must be carried out only by qualified
skilled personnel in compliance with the current regulations.
•In processes where in the event of a fault condensate is to be expected, turn the pump head downwards
and mount the pump at the highest point. If this installation is not possible, the outlet tubing must be
installed with a downward slope (see Figure 7) to the downstream components.

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7Wrong operation
Warning
Please make sure to install and operate the pump for the intended use described in
this instruction manual only.
Warning
The pump can only be operated within the parameters stated in the technical data
of chapter ‘10Technical data’ on page 13.
Warning
The pump is not designed for liquids or particles.
Condensation in the pump is not permissible and can lead to a defect.
Even if condensation could occur in the rarest of cases, the pump head must be
turned downwards for normal operation and the sample gas outlet must be laid
with a downward slope to the downstream components.
The pump head can be electrostatically charged by particles, liquids and drops of
condensate.
Warning
The materials of the pump, which are in contact with the sample gas, need to be
suitable for the used sample gas.
Warning In order to operate the pump, it needs to be securely installed.
Warning
Install the pump only in weather protected areas.
Make sure to provide sufficient ventilation.
Warning It is necessary to protect the pump motor with a suitable motor protection device.
Warning
The permitted maximum pressure within the pump is 1.5 bar (gauge pressure).
Do not close the sample gas output. A sufficient sample gas flow needs to be pro-
vided to prevent the pump pressure from exceeding the permitted maximum pres-
sure value.
A sufficient sample gas flow also prevents the temperature of the pump head to in-
crease over the permitted temperature range.

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Warning
If components downstream from the pump can block or reduce the sample gas
flow, appropriate measure, e.g. a pressure valve, needs to be installed to prevent
the process pressure from exceeding the maximum permitted pressure value.
8Safety instructions for using the pump in potentially explosive atmospheres
The bellows pump MP-F…/EX is designed to be used in potentially explosive atmospheres of zone 1, and belongs
to the equipment category 2G.
The explosion protection marking of the equipment is:
II 2 G c IIC T3 X
The type examination certificate of the pump is issued by IBExU Institut für Sicherheitstechnik GmbH, an affiliate
institute of the TU Bergakademie Freiberg. You will find a copy of the type examination certificate IBExU 15 ATEX B
005 X, available in the corresponding editions, in the appendix of this instruction manual.
Note
As of serial No. 21021130, the MP-F.../EX is supplied with a new drive motor.
The new drive motor has the Ex protection class: II 2 G Ex db eb IIC T4.
The changed temperature class (T4) of the drive motor has no effect on the
temperature class of the entire pump, which remains unchanged T3. See
also chapter 1 "Important product information: new drive motor".
9Application
The bellows pump MP-F …/EX is suitable for 100 % oil-free operation of corrosive and flammable gases. The con-
struction and performance of the pump is especially tailored to the requirements of the analysis technique. The
pump is gas tight and its operation is maintenance-free.
All parts of the bellows pump MP-F …/EX, which are in contact with the sample gas, are corrosion resistant. To
connect the pump head to the tubing, the upper part of the pump head is also available in stainless steel (optional).
The pump operates absolutely lubricant free, this prevents the sample gases from any contamination. Due to a
special bellows and valve system, the pump operates maintenance-free and has a long service life. The straightfor-
ward valve design ensures low maintenance costs. The pump is available with EX electric motors for 230 V AC or
115 V AC.
Note
As of serial No. 21021130, the MP-F.../EX is supplied with a new drive motor.
See also chapter 1 "Important product information: new drive motor".

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Two different pump capacities are available:
•MP-F05/EX pump capacity 5 Nl/min (approx. 320 Nl/h)
•MP-F10/EX pump capacity 10 Nl/min (approx. 600 Nl/h)
Liter capacity with a counter pressure of ±50 mbar on the vacuum and pressure side.
•Option: integrated needle valve to adjust the flow rate in the pump head of the MP F.../R/EX
and/or
•Option: stainless steel pump head with NPT – thread.
The sample gas line can be connected to the top or the side of the pump head. The pump head can be rotated
and mounted in 90° steps.
9.1 MP-F05/R/EX and MP-F10/R/EX with integrated needle valve
To ensure that the needle valve works properly, the output of the pump needs to be operated with at least 0.1 bar
counter pressure.
To adjust the pump capacity, a needle valve used as an internal pump bypass is integrated into the pump head.
The optimized shape of the needle valve makes it possible to adjust the pump capacity over a wide range. All parts
of the valve, which are in contact with the sample gas, are made out of PTFE and PVDF. There are no O-rings in the
needle valve.
•To open the needle valve completely, turn out the valve until it stays at 35 mm [≈ 1.38”] (lowest pump capac-
ity).
•To close the needle valve completely, turn in the valve, until it stays at 25 mm [≈ 0.98”] (highest pump capacity)
After adjusting the needle valve, the locknut (see position ①) needs to be fastening hand-tight with a wrench. This
ensures that the needle valve is gas tight, and avoids accidental misalignment of the valve.
Warning
Bellows pumps series MP-F…/EX are not suitable for liquids or particles.
These pumps only operate dry and particle-free gases.

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Figure 1 Needle valve in a half-section view with one quarter removed
The reliability of the pump is increased by use of a bypass needle valve. This needle valve protects the pump from
unnecessary high loads or overload.
Figure 2 Pump with bypass needle valve
1

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10 Technical data
Bellows pump
MP-F05/EX
MP-F05/R/EX
Part No.
05P1100
05P1100a
05P1110
05P1110a
Integrated needle valve
No
Yes
Voltage
230 V
115 V
230 V
115 V
Frequency
50 to 60 Hz
Voltage tolerance
In accordance with IEC 60034-1 Voltage ±10 % Frequency ±1 %
Degree of protection
IP 54 - DIN 40050
Capacity max.
320 Nl/h (approx. 5 l/min)
Liter capacity with a counter pressure of ±50 mbar on the vacuum and
pressure side
Operating pressure
Max. 0.4 to 2.5 bar abs.
Marking
II 2 G c IIC T3 XIBExU 15 ATEX B 005 X
Gas temperature
-20 to +50 °C [-4 to +122 °F]for dry sample gas
Ambient temperature
-10 to +50 °C [+14 to +122 °F]/0 to +50 °C [+32 to +122 °F] for dry sam-
ple gas, installation altitude of < 1000 m [≈ 3281 ft] above sea level
Storage temperature
-20 to +60 °C [-4 to +140 °F]
Sample gas connections
G 1/4" female, DIN ISO 228/1*
Gas tightness of pump head
< 6 x 10-3 mbar l/s
Current consumption @ 50 Hz, I
N
0.8 A
1.6 A
0.8 A
1.6 A
Current consumption @ 60 Hz, IN
0.8 A
2.2 A
0.8 A
2.2 A
Power consumption
90 W
cos φ @ 50 Hz
0.97
cos φ @ 60 Hz
0.97
0.99
0.97
0.99
Cable fittings
M20 x 1.5 clamp range 6 – 10 mm
Electrical equipment standard
EN 60204-1, EN 13463-1: 2009, EN 13463-5: 2011,
EN 60079-0:2012 + A11:2013
Material of sample gas contacting
parts
PTFE, PFA, FEP
PTFE, PFA, FEP, PVDF
Weight
7.1 kg
[≈ 15.7 lbs]
7.75 kg
[≈ 15.8 lbs]
7.1 kg
[≈ 15.7 lbs]
7.75 kg
[≈ 15.8 lbs]

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Bellows pump
MP-F10/EX
MP-F10/R/EX
Part No.
05P1105
05P1105a
05P1115
05P1115a
Integrated needle valve
No
Yes
Voltage
230 V
115 V
230 V
115 V
Frequency
50 to 60 Hz
Voltage tolerance
In accordance with IEC 60034-1 Voltage ±10 % Frequency ±1 %
Degree of protection
IP 54 - DIN 40050
Capacity max.
600 Nl/h (approx. 10 l/min)
Liter capacity with a counter pressure of ±50
mbar on the vacuum and
pressure side
Operating pressure
Max. 0.3 to 2.5 bar abs.
Marking
II 2 G c IIC T3 X IBExU 15 ATEX B 005 X
Gas temperature
-20 to +50 °C [-4 to +122 °F] for dry sample gas
Ambient temperature
-10 to +50 °C [+14 to +122 °F]/0 to +50 °C [+32 to +122 °F] for dry sam-
ple gas, installation altitude of < 1000 m [≈ 3281 ft] above sea level
Storage temperature
-20 to +60 °C [-4 to +140 °F]
Sample gas connections
G 1/4" female, DIN ISO 228/1*
Gas tightness of pump head
< 6 x 10
-3
mbar l/s
Current consumption @ 50 Hz, IN
0.8 A
1.6 A
0.8 A
1.6 A
Current consumption @ 60 Hz, I
N
0.8 A
2.2 A
0.8 A
2.2 A
Power consumption
90 W
cos φ @ 50 Hz
0,97
cos φ @ 60 Hz
0,97
0,99
0,97
0,99
Cable fittings
M20 x 1.5 clamp range 6 – 10 mm
Electrical equipment standard
EN 60204-1, EN 13463-1: 2009, EN 13463-5: 2011,
EN 60079-0:2012 + A11:2013
Material of sample gas contacting
parts
PTFE, PFA, FEP
PTFE, PFA, FEP, PVDF
Weight
7.1 kg
[≈ 15.7 lbs]
7.75 kg
[≈ 15.8 lbs]
7.1 kg
[≈ 15.7 lbs]
7.75 kg
[≈ 15.8 lbs]
Options
05P1050
Mounting bracket with 4 anti-vibration pads for bellows pump MP-F
05P1060
Extra charge for upper pump head of bellows pump MP-F made out of stain-
less steel, connecting thread sample gas: 1/4" NPT
05P1070
Extra charge for upper pump head of bellows pump MP-F.../R made out of
stainless steel with needle valve made out of PVDF, connecting thread sample
gas: 1/4" NPT
* The dimensions and designation of the screw-in threads correspond to the respective applicable standard. The tolerances of
the thread standards are matched to metal threads and cannot be applied to plastic threads.
Please note: Nl/h and Nl/min refer to the German standard DIN 1343 and are based on these standard conditions: 0 °C [32 °F],
1013 mbar.

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10.1 Pump capacity
Figure 3 Pump capacity MP-F.../EX
10.2 Dimensions
Figure 4 Dimensions MP-F.../R/EX
Prohibited pressure area

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11 Receiving and storing the bellows pump
1. Please remove the bellows pump carefully from the packaging. Check the scope of the delivery specified
on the delivery note. Please make sure that you have received all items stated on the delivery note.
2. Please check the unit for any transport damages after receipt and report any complaints to the transport
company immediately.
Note
The bellows pump should be stored in a protected, frost-free room!

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12 Installation instructions
All relevant regulations regarding accident prevention and safety need to be met during installation and operation
of the pump.
Warning
High voltage!
Working without disconnecting the power supply may cause an electrical shock. Dis-
connect power supply before any assembly, maintenance or repair work. Secure the
pump against accidental restart!
Warning
Protect yourself and others against contact to parts of the pump, e.g. electrical con-
nections, which may be still connected to a power supply. Protect yourself and oth-
ers against contact to moving parts of the pump. Protect the pump against entering
of water and particles.
Note
Make sure to comply with the current safety regulations regarding the sample gas
used in the pump.
Install the pump in well ventilated rooms and away from heat sources to prevent any
heat accumulation.
For outdoor installation, install the pump in a protective housing. The housing
needs to provide protection against frost in winter, and ventilation in summer. Avoid
exposure to direct sunlight.
Warning
Pumps have mechanical moving parts which may induce vibrations. An appropriate
vibration decoupling system is necessary to protect the pump, peripheral compo-
nents and facilities from vibration damages. A vibration decoupling system also mini-
mizes the noise level of the operating pump. M&C offers e.g.
vibration control air
springs to de-couple the vibration source from the vibration-free environment.
Especially the connections of the sample gas lines to the pump head need to be de-
coupled.
Warning
The components, which will be connected to the pump, need to meet the require-
ments of the pneumatic data of the pump. For details please refer to the technical
data sheet or manual.
Make sure to comply with the current safety regulations when connecting the pump
to the power supply.
Make sure to comply with the current safety regulations regarding the sample gas
used in the pump.

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Aggressive condensate possible!
Chemical burns caused by aggressive media possible!
For general electrical and mechanical work on the pump, wear personal protective
equipment (PPE) in accordance with the risk assessment.
Warning
Moisture in the pump head will destroy the pump.
Even though condensation could occur in the rarest of cases, e.g. due to the pres-
sure dew point being exceeded or due to a malfunction in the extraction process,
the following measures must be taken:
•Turn the pump head downwards so that the gas connections point down-
wards.
•Mount the pump at the highest point in the system. If this is not possible,
route the outlet tubing away from the pump at an incline (see Figure 7).
These measures allow condensate formed in the pump outlet to flow out of the
pump head and be safely discharged.
Note
To immediately detect pump malfunctions, we recommend installing a flow moni-
toring device downstream from the pump.

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12.1 Installation in potentially explosive atmospheres
In potentially explosive areas (zones) use only pumps, which are in the correspond-
ing equipment category, explosive group and temperature class!
If the standard configuration is changed by using components or parts not speci-
fied and not authorized by M&C, the type examination certificate will no longer be
valid. Repair and services with parts not specified by M&C will also lead to the can-
cellation of the EX certificate.
If you have any questions or doubts about parts, components or repair and ser-
vices, please don’t hesitate to contact M&C or one of our official distributors.
•Markings:
Motor marking: II 2 G Ex db eb IIC T4. Protection class eb applies
to the terminal box.
Pump marking: II 2 G c IIC T3 X
•The pump is suitable to be installed and operated in zone 1
Explosion group IIC
Temperature class T3
•The pump is suitable to operate sample gases from zone 1
Explosion group IIC
Temperature class T3
Warning
The pump is not suitable to operate particles and liquids.
The pump head can be electrostatically charged by particles, liquids and drops of
condensate.
Moisture in the pump head will destroy the pump.
Even though condensation could occur in the rarest of cases, e.g. due to the pres-
sure dew point being exceeded or due to a malfunction in the extraction process,
the following measures must be taken:
•Turn the pump head downwards so that the gas connections point down-
wards.
•Mount the pump at the highest point in the system. If this is not possible,
route the outlet tubing away from the pump at an incline (see Figure 7).
These measures allow condensate formed in the pump outlet to flow out of the
pump head and be safely discharged.
Before operating the pump with sample gas, make sure that the sample gas is
compatible with the material of the pump head, pump bellows and valves. You will
find information about the different materials in chapter ‘10 Technical data’ on
page 13.
There are no solid particles and/or aerosols allowed in the sample gases or gas mix-
tures. Solid particles or aerosols in combination with the materials of the pump can
generate static electricity, and sparks from friction or impact.

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Make sure to pay attention to the current version of the explosion protection regu-
lations (EX-RL) regarding the environment of the pump in an explosion protected
area (zone):
‘A collection of technical regulations on the prevention of hazards caused by an ex-
plosive atmosphere with a collection of examples showing how to classify risk areas
into zones’(available in German)
For specific cases or if you have any doubt about the correct category of a poten-
tially explosive zone, please inform and seek advice from your appropriate control
agency in charge of the regulations.
The following applies to the usage of the pump in potentially explosive areas,
which contain flammable gases, vapors and mists:
The lowest ignition temperature of the eligible potentially explosive atmospheres
must to be higher than the permitted ‘maximum surface temperature’ of the
pump.
The maximum surface temperature is according to EN 60079-0 and EN 13463-1, the
maximum temperature, which can be reached during operation under worst case
conditions (within the permitted tolerance range) at one part or one surface of the
pump.
The maximum surface temperature is determined by the design of the pump, the
ambient air and the temperature of the sample gas. The maximum surface temper-
ature is noted at the product label as the temperature class of the pump. During
operation with hazardous gases, follow closely the safety regulations regarding the
handling of these gases.
Note
As of serial No. 21021130, the MP-F.../EX is supplied with a new drive motor. The
new drive motor has the Ex protection class: II 2 G Ex db eb IIC T4.
The changed temperature class (T4) of the drive motor has no effect on the tem-
perature class of the entire pump, which remains unchanged T3. See also chapter 1
"Important product information: new drive motor".