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
Instruction Manual
Version 1.04.00

2MP-F…/EX | 1.04.00 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 subject to technical modifications..
© 11/2017 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 approval by M&C TechGroup.
MP®is a registered trade mark.
Version; 1.04.00

www.mc-techgroup.com MP-F…/EX | 1.04.00 3
Table of Contents
1General information.................................................................................................................... 4
2Declaration of conformity........................................................................................................... 4
3Warranty...................................................................................................................................... 5
4Warning signs and definitions................................................................................................... 5
5Correct operation........................................................................................................................ 7
6Wrong operation......................................................................................................................... 8
7Safety instructions for using the pump in potentially explosive atmospheres...................... 9
8Application.................................................................................................................................. 9
8.1 MP-F05/R/EX and MP-F10/R/EX with integrated needle valve................................................ 10
9Technical data........................................................................................................................... 11
9.1 Pump capacity ........................................................................................................................ 12
9.2 Dimensions............................................................................................................................. 12
10 Receiving and storing the bellows pump................................................................................ 13
11 Installation instructions ........................................................................................................... 14
11.1Installation in potentially explosive atmospheres..................................................................... 16
11.2Mounting the pump ................................................................................................................. 18
11.3Rotating the pump head.......................................................................................................... 19
11.4Electrical connections ............................................................................................................. 20
11.5Motor protection circuit breaker............................................................................................... 20
11.6Pneumatic connections........................................................................................................... 24
12 Start up...................................................................................................................................... 25
13 Operating the pump.................................................................................................................. 26
14 Decommissioning..................................................................................................................... 26
15 Disassembly.............................................................................................................................. 27
16 Maintenance.............................................................................................................................. 28
16.1Replacing the valve plates ...................................................................................................... 30
16.2Replacing the bellows ............................................................................................................. 31
16.3Cleaning instructions............................................................................................................... 32
17 Trouble shooting ...................................................................................................................... 33
18 Spare parts list.......................................................................................................................... 34
19 Appendix................................................................................................................................... 35
Table of Figures
Figure 1 Needle valve in a half-section view with one quarter removed.......................................... 10
Figure 2 Pump with bypass needle valve........................................................................................ 10
Figure 3 Pump capacity MP-F.../EX................................................................................................ 12
Figure 4 Dimensions MP-F.../R/EX................................................................................................. 12
Figure 5 Installing the MP-F.../R/EX ............................................................................................... 18
Figure 6 Rotating the pump head................................................................................................... 19
Figure 7 Wiring diagram: 3-phase motor protection circuit breaker connection to 1-phase motor... 21
Figure 8 Tripping characteristic: heating time t versus IA/IN............................................................. 22
Figure 9 Electrical wiring ................................................................................................................ 23
Figure 10 Ground wire connection to the motor ............................................................................ 23
Figure 11 Pneumatic connections................................................................................................. 24
Figure 12 Sectional drawing MP-F../EX ........................................................................................ 30

4MP-F…/EX | 1.04.00 www.mc-techgroup.com
Headquarters
M&C TechGroup Germany GmbH Rehhecke 79 40885 Ratingen Germany
Phone: +49 - 2102 - 935 - 0
E - mail: [email protected]m
Website: www.mc-techgroup.com
1 General 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 includes all information regarding proper transportation, storage, installation, opera-
tion 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.
2 Declaration 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.

www.mc-techgroup.com MP-F…/EX | 1.04.00 5
3 Warranty
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 products 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.
4 Warning signs and definitions
Danger
The ‘Danger’ warning sign indicates that death, serious injury
and/or significant material damage will be the consequence, if
the appropri-ate precautions should not be taken.
Warning
The ‘Warning’ warning sign indicates that death, serious injury
or damage to property may occur, if the relevant precautionary
measures are not observed.
Caution
The ’Caution’ warning sign indicates that slight personal injury
can occur, if the appropriate safety precautions are not ob-
served.
Caution
’Caution‘ indicates that damage to property can occur, if the ap-
propriate 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, com-
missioning, maintenance 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 us-
age in potentially explosive atmospheres.

6MP-F…/EX | 1.04.00 www.mc-techgroup.com
High voltages!
Protect yourself and others against damages which might be
caused by high voltages.
Toxic!
Acute toxicity (oral, dermal, inhalation)! Toxic when in contact
with skin, swollowed or inhaled.
Corrosive!
These substances destroy living tissue and equipment upon
contact.
Do not breathe vapors; avoid contact with skin and eyes.
Wear protective gloves!
Working with chemicals, sharpe objects or extremly high tem-
peratures requires wearing protective gloves.
Wear safety glasses!
Protect your eyes while working with chemicals or sharpe ob-
jects. Wear safety glasses to avoid getting something in your
eyes.
Wear protective clothes!
Working with chemicals, sharpe objects or extremly high tem-
peratures requires wearing protective clothes.

www.mc-techgroup.com MP-F…/EX | 1.04.00 7
5 Correct operation
Follow these fundamental safety precautions during installation, commissioning and operation
of the device:
•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
‘Regulations on the Installation of Power Circuits with Nominal Voltages below 1000V’ and must
be in compliance with all relevant regulations and standards.
•Attention should be paid to all relevant national and international regulations and standards re-
garding 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 devicefor access. Make surethat allextern 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.
•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 moni-
toring device downstream from the pump.
•The pump is only designed for sample gases, which are not contaminated with particles. It might
be necessary 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.

8MP-F…/EX | 1.04.00 www.mc-techgroup.com
6 Wrong operation
Warning
Please make sure to install and operate the pump for the in-
tended use described in this instruction manual only.
Warning
The pump can only be operated within the parameters stated in
the technical data of chapter ‘9Technical data’ on page 11.
Warning
The pump is not designed for liquids or particles.
It is prohibited to operate the pump with condensate.
Condensate accumulated inside the pump head destroys the
pump.
Even if condensate might occur only on very rare occasions,
the pump head needs to be rotated 180° facing downwards.
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 provided to prevent the pump pressure from
exceeding the permitted maximum pressure value.
A sufficient sample gas flow also prevents the temperature of
the pump head to increase over the permitted temperature
range.

www.mc-techgroup.com MP-F…/EX | 1.04.00 9
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.
7 Safety 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 cer-
tificate IBExU 15 ATEX B 005 X, available in the corresponding editions, in the appendix of this instruc-
tion manual.
8 Application
The bellows pump MP-F …/EX is suitable for 100 % oil-free operation of corrosive and flammable gases.
The construction 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 straightforward valve design ensures low maintenance costs. The pump is available with EX
electric motors for 230 VAC or 115 VAC.
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.
Warning
Bellows pumps series MP-F…/EX are not suitable for liquids or par-
ticles. These pumps only operate dry and particle-free gases.

10 MP-F…/EX | 1.04.00 www.mc-techgroup.com
8.1 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
capacity).
•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.
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

www.mc-techgroup.com MP-F…/EX | 1.04.00 11
9 Technical data
Bellows pump
MP-F05/EX
MP-F05/EX
MP-F10/EX
MP-F10/EX
Part no.
05 P 1100
05 P 1100a
05 P 1105
05 P 1105a
Part no. with needle valve
MP-F…/R/EX
05 P 1110
05 P 1110a
05 P 1115
05 P 1115a
Voltage
230 V; 50 Hz
115 V; 60 Hz
230 V; 50 Hz
115 V; 60 Hz
Voltage tolerance
In accordance with IEC 60034-1 Voltage ±5 % Frequency ±2 %
Degree of protection
IP 54 - DIN 40050
Capacity max.
320 Nl/h (approx. 5 l/min)
600 Nl/h (approx. 10 l/min)
Liter capacity with a counter pres-
sure of ±50 mbar on the vacuum
and pressure side
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.
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 (approx. -4 °F to +122 °F) for dry sample gas
Ambient temperature
+10 to +50 °C / 0 to +50 °C for dry sample gas
(+50 °F to +122 °F / +32 °F to +122 °F for dry sample gas)
installation altitude of < 1000 m (< 3281 ft.) above sea level
Storage temperature
-20 to +60 °C
(approx. -4 to +140 °F)
Sample gas connections
G1/4" i DIN ISO 228/1
Gas tightness of pump
head
< 6 x 10-3 mbar l/s
Power consumption
90 W
Current consumption
0.88 A
1.78 A
0.88 A
1.78 A
IA/IN
3.6
Temperature rise time of
the motor TEfor tempera-
ture class T3
80 s
Cable fittings
M20 x 1.5 clamp range 6 –10 mm (0.24” – 0.39”)
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 (+PVDF for pump type /R)
Weight
8.55 kg
(18.85 lbs)
7.75 kg
(17.09 lbs)
8.55 kg
(18.85 lbs)
7.75 kg
(17.09 lbs)

12 MP-F…/EX | 1.04.00 www.mc-techgroup.com
9.1 Pump capacity
Figure 3 Pump capacity MP-F.../EX
9.2 Dimensions
Figure 4 Dimensions MP-F.../R/EX
Prohibited pressure area

www.mc-techgroup.com MP-F…/EX | 1.04.00 13
10 Receiving and storing the bellows pump
•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.
•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!

14 MP-F…/EX | 1.04.00 www.mc-techgroup.com
11 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 elec-
trical shock. Disconnect power supply before any assembly, mainte-
nance or repair work. Secure the pump against accidental restart!
Warning
Protect yourself and others against contact to parts of the pump, e.g.
electrical connections, which may be still connected to a power sup-
ply. Protect yourself and others 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 venti-
lation in summer. Avoid exposure to direct sunlight.
Warning
Pumps have mechanicalmoving parts which may induce vibrations. An
appropriate vibration decoupling system is necessary to protect the
pump, peripheral components and facilities from vibration damages. A
vibration decoupling system also minimizes the noise level of the op-
erating 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 requirements 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 con-
necting the pump to the power supply.
Make sure to comply with the current safety regulations regarding the
sample gas used in the pump.

www.mc-techgroup.com MP-F…/EX | 1.04.00 15
Aggressive condensate possible!
Chemical burns caused by aggressive media possible!
For general electrical and mechanical work on the pump, wear per-
sonal protective equipment (PPE) in accordance with the risk assess-
ment.
Warning
Condensate accumulated inside the pump head destroys the pump.
Even if condensate might occur only on very rare occasions, the
pump head needs to be rotated 180° facing downwards.
Note
To immediately detect pump malfunctions, we recommend installing a
flow monitoring device downstream from the pump.

16 MP-F…/EX | 1.04.00 www.mc-techgroup.com
11.1 Installation in potentially explosive atmospheres
In potentially explosive areas (zones) use only pumps, which are in the
corresponding equipment category, explosive group and temperature
class!
If the standard configuration is changed by using components or parts
not specified and not authorized by M&C, the type examination certifi-
cate will no longer be valid. Repair and services with parts not speci-
fied by M&C will also lead to the cancellation of the EX certificate.
If you have any questions or doubts about parts, components or repair
and services, please don’t hesitate to contact M&C or one of our offi-
cial distributors.
•Markings:
Motor marking: II 2 G Ex eq IIC T3
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.
Condensate accumulated inside the pump head destroys the pump.
Even if condensate might occur only on very rare occasions, the pump
head needs to be rotated 180° facing downwards.
Before operating the pump with sample gas, make sure that the sam-
ple gas is compatible with the material of the pump head, pump bel-
lows and valves. You will find information about the different materials
in chapter ‘9 Technical data’ on page 11.
There are no solid particles and/or aerosols allowed in the sample
gases or gas mixtures. Solid particles or aerosols in combination with
the materials of the pump can generate static electricity, and sparks
from friction or impact.

www.mc-techgroup.com MP-F…/EX | 1.04.00 17
Make sure to pay attention to the current version of the explosion pro-
tection regulations (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 explosive 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 potentially 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 at-
mospheres 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 temperature is noted at the product label as the tem-
perature class of the pump. During operation with hazardous gases,
follow closely the safety regulations regarding the handling of these
gases.

18 MP-F…/EX | 1.04.00 www.mc-techgroup.com
11.2 Mounting the pump
The mounting site needs to comply with the following requirements:
•Ambient temperature range during operation: +10 °C to +50 °C / 0 °C to +50 °C for dry sample
gas (+50 °F to + 122 °F / +32 °F to + 122 °F for dry sample gas)
•The pump is rated IP54 (protection class) and it needs to be protected against water and dust
ingress.
•During operation, the pump needs to have an adequate supply of cooling air for heat dissipation.
•If possible install the pump at the highest elevation point of your system, to make sure that no
condensate and no dust will ingress the pump.
•Mount the pump through the four 6.5 mm (0.26“) holes located in the base of the pump. If vibra-
tions are likely to occur at this location, use vibration control air springs to de-couple the vibration
source. Screw the pump tightly to the ground. For dimensions, please see Figure 4 on page 12.
For sufficient supply of cooling air, the pump needs to be mounted at least 35 mm (1.38“) apart
from the wall.
Figure 5 Installing the MP-F.../R/EX

www.mc-techgroup.com MP-F…/EX | 1.04.00 19
11.3 Rotating the pump head
Warning
Condensate accumulated inside the pump head destroys the pump.
Even if condensate might occur only on very rare occasions, the pump
head needs to be rotated 180° facing downwards.
By loosening the four flange screws, the position of the pump head relative to the motor foot can be
changed in 90° steps. Proceed as follows:
•Please unscrew and remove the three lid screws.
•Remove lid.
•Unscrew and remove the four flange screws with the lock washers shown in Figure 6.
•Now you can change the position of the pump head in 90° steps.
Please be sure to put the lock washers back under the four flange screws.
The lock washers are essential to electrically connect the motor with the
pump head to avoid potential differences.
•After rotating the pump head to the selected position, please insert the four flange screws with
the lock washers back again and tighten them.
•Put the lid back on, and secure the lid by tightening the three lid screws.
Figure 6 Rotating the pump head

20 MP-F…/EX | 1.04.00 www.mc-techgroup.com
11.4 Electrical connections
Be sure to observe all relevant safety regulations during the electrical installation of the pump. Before
connecting the pump, the electrical supply must be disconnected from the power supply.
Warning
Wrong voltage can destroy the device.
When connecting the equipment, please make sure that the supply volt-
age is identical with the supply voltage stated on the product label. The
supply voltage can only deviate max. ±5 %, and the frequency ± 2% from
the value stated on the product label.
Exceeding the tolerance increases heating of the device and influences
the electromagnetic compatibility (EMC).
The air-cooled motor is designed for an ambient temperature range +10
°C to +50 °C / 0 °C to +50 °C for dry sample gas (+50 °F to + 122 °F / +32
°F to + 122 °F for dry sample gas) and an installation altitude of < 1000 m
(< 3281 ft.) above sea level.
Note
The installation and commissioning of the device must conform to the re-
quirements of VDE 0100 ‘Regulations on the Installation of Power Circuits
with Nominal Voltages below 1000 V’ and must be in compliance with all
relevant regulations and standards!
The current supply circuit of pump type MP-F.../EX (230 V) needs to be
equipped with a motor protection circuit breaker 0.88 A, which is matched
to the corresponding rated motor current (overcurrent protection).
The current supply circuit of pump type MP-F.../EX (115 V) needs to be
equipped with a motor protection circuit breaker 1.78 A, which is matched
to the corresponding rated motor current (overcurrent protection).
11.5 Motor protection circuit breaker
In an event of an overload trip, the protection and monitor device must disconnect all poles from the
main circuit to stop the power flow to the monitored motor directly. It also needs to ensure that the motor
does not switch on by itself after the overload trip.
In addition to the previous requirements and the installation instructions mentioned in chapter ‘11.4
Electrical connections’ on page 20, the following electrical and pump installation requirements need to
be complied with:
The pump needs to be protected according to EN 60079-14 against impermissible high temperature due
to overload. This overcurrent protection device needs to be provided by the customer. According to EN
60947 the overcurrent protection device protects the pump by disconnecting all poles from the main
circuit by current-dependent delayed tripping.
This overcurrent protection device needs to be set to the maximum rated current of the pump motor (see
product label for more information).
A motor with an overcurrent protection device can only be used for continuous duty with only a few easy
recurring startups, with no significant start-up warming.