M&C SR Series User manual

Peristaltic Pump Series SR®
SR25.2, SR25.2-G, SR25.2-W
SR25.3, SR25.3-G, SR25.3-W
SR25.6, SR25.6-G, SR25.6-W
Instruction Manual
Version 1.01.01

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Dear customer,
Thank you for buying our product. In this instruction manual you will find all necessary information about
this M&C product. The information in the instruction 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 manual.
For additional information about our products and our company, please go to M&C’s website www.mc-
techgroup.com. There you will find the data sheets and manuals of all our products in German and
English.
This Operating Manual does not claim completeness and may be
subject to technical modifications.
© 10/2018 M&C TechGroup Germany GmbH. Reproduction of this
document or its content is not allowed without permission from M&C.
SR®is a registered trade mark.
Version: 1.01.01

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Content
1General information.................................................................................................................... 4
2Declaration of conformity........................................................................................................... 4
3Safety instructions...................................................................................................................... 5
4Warranty...................................................................................................................................... 5
5Warning signs and definitions................................................................................................... 6
6Introduction................................................................................................................................. 8
7Technical Data ............................................................................................................................ 8
8Important safety instructions for using the SR25.X-X.............................................................. 9
9Description................................................................................................................................ 10
10 Reception and storage............................................................................................................. 12
11 Installation instructions ........................................................................................................... 13
11.1 Mounting instructions for SR25.2 peristaltic pump................................................................ 13
12 Supply connections.................................................................................................................. 14
12.1 Tubing connections.............................................................................................................. 14
12.2 Electrical connections .......................................................................................................... 15
13 Start-up...................................................................................................................................... 16
14 Closing down............................................................................................................................ 16
15 Maintenance.............................................................................................................................. 17
15.1 Changing the pump tubing................................................................................................... 18
15.2 Changing contact pulleys and springs.................................................................................. 19
15.2.1 Reassembly of the driver .............................................................................................. 20
15.3 Cleaning the pump head...................................................................................................... 21
16 Repair information.................................................................................................................... 21
17 Spare parts list.......................................................................................................................... 22
18 Appendix................................................................................................................................... 22
List of illustrations
Figure 1 Dimensions SR25.X......................................................................................................... 10
Figure 2 Drilling pattern for SR25.X ............................................................................................... 11
Figure 3 Dimensions SR25.X-W.................................................................................................... 11
Figure 4 Dimensions SR25.X-G..................................................................................................... 12
Figure 5 SR25.2: Mounting distance between front panel and pump motor ................................... 14
Figure 6 Supply voltage connection for SR25.X-W and SR25.X-G ................................................ 15
Figure 7 Changing the pump tubing............................................................................................... 18
Figure 8 Different pump tube sizes................................................................................................ 18
Figure 9 Disassembly of pump head and driver............................................................................. 19
Figure 10 Check of axes and rolls.................................................................................................... 19
Figure 11 Spare parts (Drawing No.: 2435-1.07.0)........................................................................... 23

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Head Office
M&C TechGroup Germany GmbH Rehhecke 79 40885 Ratingen Germany
Telephone: 02102 / 935 - 0
Fax: 02102 / 935 - 111
E - mail: [e-mail]
www.mc-techgroup.com
1 GENERAL INFORMATION
The product described in this 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 manual need to be followed. This manual
includes 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.
2 DECLARATION OF CONFORMITY
CE - Certification
The product described in this operating manual complies with the following EU directives:
RoHS Directive
The requirements of the RoHS2 (‘Restriction of Hazardous Substances 2’) directive 2011/65/EU and its
annexes are met.
EMC-Instruction
The requirements of the EU directive 2014/30/EU ‘Electromagnetic compatibility’ are met.
Low Voltage Directive
The requirement of the EU directive 2014/35/EU ‘Low Voltage Directive’ are met.
The compliance with this EU directive has been examined according to DIN EN 61010.
Declaration of conformity
The EU Declaration of conformity can be downloaded from the M&C homepage or directly requested
from M&C.

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3 SAFETY INSTRUCTIONS
Follow these safety directions and instructions regarding installation, commissioning and
operation:
•Read this manual beforecommissioning and operating theproduct. Make sure to followall 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
(IEC 364) ‘Regulations on the Installation of Power Circuits with Nominal Voltages below 1000
V’ and must be in compliance with all relevant regulations and standards.
•Before connecting the device, please make sure to compare the supply voltage with the specified
voltage on the product label.
•The peristaltic pumps SR25.X-X are not certified to be used in hazardous areas.
•Protection against damages caused by 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 manual.
•Install the device only in protected areas, sheltered from sun, rain and moisture. The product
should not be exposure to the elements.
•Installation, maintenance, inspections and any repairs of the devices must be carried out only by
qualified skilled personnel in compliance with the current regulations.
4 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.

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5 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
appropriate 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 observed.
Caution
’Caution‘ indicates that damage to property can occur if the
appropriate safety precautions are not observed.
Attention
‘Attention’ indicates that an unintended result or situation can occur
if the corresponding information is not taken into account.
Note
‘Note’ indicates important information relating to the product or
highlights parts of the documentation for special attention.
Qualified personnel
‘Qualified personnel’ are experts who are familiar with the
installation, mounting, commissioning and operation of these types
of products.
High voltages!
Protect yourself andothers 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 destroyliving tissue and equipment upon contact.
Do not breathe vapors; avoid contact with skin and eyes.
Contains gas under pressure. Do not open container!
Check pressure before opening container, and adjust pressure to
atmosheric pressure.

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

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6 INTRODUCTION
The peristaltic pump SR25... has been specially developed for the condensate removal in analysis
applications. It ensures a continuous condensate discharge at gas sample coolers, condensate
collecting vessels, etc.
Synchronous motor and gearing unit with return stop make a condensate backflow impossible. The safe
disposal of condensate is guaranteed with the pumping capacities stated in the technical data table.
The 0.3 Nl/h pumping capacity corresponds to the amount of condensate collected, when cooling a
sample gas flow of 850 Nl/h to 5 °C [41 °F] with an inlet dew point of +70 °C [158 °F].
7 TECHNICAL DATA
Peristaltic pump series SR25®
version SR25.2
version SR25.2-G
version SR25.2 W
Part No.
SR25.2 01P1300
SR25.3 01P1310
SR25.6 01P1350
SR25.2-G 01P1120
SR25.3-G 01P1110
SR25.6-G 01P1400
SR25.2-W 01P1307
SR25.3-W 01P1320
SR25.6-W 01P1360
Housing
No
Yes, out of
polystyrene
No
Method of mounting
Attached to a front plate
Wall mounting
Inside or attached to
an enclosure
Protection / electrical standard
IP 10 EN60529
IP 52 EN60529
IP 10 EN60529
Electrical connection
Terminal 1.5 mm2
Terminal 1.5 mm2
1 x M20 x 1.5
Terminal 1.5 mm2
Dimensions*
(HxWxD)
84 x 64 x 52 mm plus
40 mm for the motor
[3.31“ x 2.50“ x 2.04“
plus 1.56“for the motor]
126 x 105 x 108 mm
[4.98“ x 4.13“ x 4.26“]
107 x 80 x 94 mm
[4.21“ x 3.15“ x 3.71“]
0.4 kg [0.88 lb]
0.6 kg [1.32 lb]
0.5 kg [1.10 lb]
Suction max.
200 mbar abs.
Pressure max.
2200 mbar abs.
Sample temperature
0 to +60 °C [32 to 140 °F]
Ambient temperature
0 to +50 °C [32 to 122 °F]
Storage temperature
-10 to +60 °C [14 to 140 °F]
Power supply
230 V/50 Hz or 115 V/60 Hz
Power consumption
3.5 VA
Duty cycle
100 % duty cycle
Gas connection
Tube connection 4/6 mm (standard)
Tube support 4
Tube connection 6/8
Tube connection 1/4“
Tube material
Novopren (standard) used for water, weak acids or bases
Masterflex (reinforced contact springs necessary!) used for strong acids
or bases, carbon disulfide, toluene, gasoline; alcohols
Chemsure used for methyl ethyl ketone, acetone,tetrahydrofuran
Tube selection
Peristaltic pump
SR25.3
SR25.2
SR25.6
Rotational speed (revolutions per minute)
1 rpm
5 rpm
10 rpm
Pumping capacity
Tube Ø 1.6 mm ID
0.012 l/h (standard)
0.06 l/h
0.12 l/h
Tube Ø 3.2 mm ID
0.05 l/h
0.3 l/h (standard)
0.6 l/h
Tube Ø 4.8 mm ID
0.08 l/h
0.4 l/h
0.8 l/h (standard)
* Metric dimensions are rounded. Inch dimensions are for reference only. In case of doubt or conflict, metric units take priority.

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8 IMPORTANT SAFETY INSTRUCTIONS FOR USING THE SR25.X-X
Warning
Inhalation hazard possible, if using toxic or asphyxiant gases!
Purge peristaltic pump with inert gas or air before opening! If the pump is
used for toxic gas or asphyxiant (oxygen-displacing) gas, it needs to be
purged with inert gas or air before opening. Follow closely all relevant
occupational safety regulations during operation.
Warning
Disconnect power supply before opening the device for access.
Make sure that all external power supplies are disconnected.
Aggressive condensate possible!
Media residues in tubing!
Chemical burns caused by aggressive media possible!
Wear protective gloves and protective glasses!
Wear proper protective clothing!
Peristaltic pump is under pressure! Do not open housing!
A peristaltic pump might be part of a system, which is under pressure.
Check pressure before opening peristaltic pump, and adjust pressure to
atmosheric pressure.

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9 DESCRIPTION
The peristaltic pump SR25.X-X is self-suctioning and designed for continuous operation. It consists of 3
compact components:
•synchronous motor,
•gearing unit with return stop and
•pump head.
The slow speed of 1 to 5 rpm of the two PVDF hose contact pulleys together with the Novoprene tubing
guarantee a good mechanical and chemical resistance with a long service life. Pre-assembled flexible
tubing sets make it easy to replace tubing, even without using any tools. The tube connector DN 4/6
also allows connecting PTFE tubing. The peristaltic pump SR25.X-X can be equipped with a power
supply of 230 V/50 Hz or 115 V/60 Hz.
Danger
Type SR25.X has open electrical wiring!
Risk of death due to electric shock!
The unused wires must be safely insulated, preferably to a third free
terminal.
The following installation options are available:
•Type SR25.X to integrate into a front plate
•Type SR25.X-G with a wall mounting case
•Type SR25.X-W with mounting bracket
Metric dimensions (mm) are rounded. Inch dimensions are for reference only. In case of doubt or conflict, metric units take priority.
Figure 1 Dimensions SR25.X
Note
Check the compatibility of the tube material with unknown gases before using the
peristaltic pump.

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Figure 2 Drilling pattern for SR25.X
Metric dimensions (mm) are rounded. Inch dimensions are for reference only. In case of doubt or conflict, metric units take priority.
Figure 3 Dimensions SR25.X-W

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Metric dimensions (mm) are rounded. Inch dimensions are for reference only. In case of doubt or conflict, metric units take priority.
Figure 4 Dimensions SR25.X-G
10 RECEPTION AND STORAGE
The peristaltic pump is a complete pre-installed unit.
•Please remove the peristaltic pump carefullyfrom the packaging. Check thescope 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 peristaltic pump must be stored in a weather protected frost-free area!

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11 INSTALLATION INSTRUCTIONS
When installing the pump make sure that accident prevention regulations and safety instructions
including those for subsequent operation are observed. The safety instructions in section must be
observed.
The following ambient conditions must be observed:
•Ambient temperature during operation: max. +50 °C [122 °F]
•Protect the pump against water and dust.
•During operation, a sufficient supply of cooling air must be guaranteed.
Danger
Do not operate the peristaltic pump SR25.X-X in hazardous areas.
Note
The pump must only be used in the conditions specified in the technical data.
The pump should be installed away from heat sources and freely ventilated
to prevent any accumulation of heat.
For outdoor installation, the pump must be installed in a housing protected
from frost in the winter and sufficiently ventilated in summer. Exposure to
direct sunlight must be avoided.
Danger
It is therefore essential to provide protection for persons against contact with
alive parts (e.g. electrical connections, motor windings) and moving parts
(e.g. fan). Protection against the entry of foreign bodies must also be
provided.
11.1MOUNTING INSTRUCTIONS FOR SR25.2 PERISTALTIC PUMP
Make sure to mount the peristaltic pump SR25.2 to a front plate with a minimum thickness of 3.5 mm
[0.138”]. If the front plate is thinner than 3.5 mm [0.138”], use shims to adjust spacing. The maximum
thickness of the front plate is 5.5 mm [0.216”].
The minimum distance avoids damages to the pump motor, and the maximum distance prevents the
motor shaft from loosing the guide inside the pump head.

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1 Pump head [outside the cooler housing) 2Cooler front panel
3Recommended monting distance 4Pump motor (inside the cooler housing)
Figure 5 SR25.2: Mounting distance between front panel and pump motor
12 SUPPLY CONNECTIONS
12.1TUBING CONNECTIONS
The tube connections are on the upper side of the pump. The standard threaded tube connectors are
DN 4/6. Tube connections with tube nipples are available as an option (see spare parts list chapter 16).
Note
Do not mix up tube connections for sample gas inlet and outlet; the
connections are marked accordingly! Check for tightness of all sample lines
after connecting!
Connect the tubing to the regular tubing connectors as follows:
•Remove the unionnut from the sealing ring couplings by turning it anti-clockwise.The nut should
be removed from the thread with great care to ensure that the loose sealing ring inside the nut
is not lost.
•Place the union nut over the connecting hose.
•Place the sealing ring over the connecting hose with the thicker bead towards the nut.
•Place the tubing over the nipple on the thread.
•The union nut is to be screwed tight by hand.
The tubing will no longer be able to slip off, and is now compression-proof.

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Note
The tightness of the connections can only be guaranteed if the connection
tubing has a straight rim (hose cutter).
Aggressive condensate possible!
Media residues in tubing!
Chemical burns caused by aggressive media possible!
Wear protective gloves and protective glasses!
Wear proper protective clothing!
12.2ELECTRICAL CONNECTIONS
Connect the cables for the power supply as follows:
Figure 6 Supply voltage connection for SR25.X-W and SR25.X-G
The supply voltage of the SR25. X peristaltic pump must be connected as follows:
Connection at 230 V: blue wire
red wire
Connection at 115 V: white wire
blue wire
Danger
Open electrical wiring!
Risk of death due to electric shock!
The unused wires must be safely insulated, preferably to a third free
terminal.
Power
SR25.X-W
SR25.X-G

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Caution
Incorrect system voltage can damage the unit. Before connecting the power
supply, make sure that the system voltage corresponds with the voltage
shown on the type plate!
The supply voltage is only allowed to deviate max. +6% resp. -10% from the
specification on the model type plate.
Setting up of electrical power installations must be conform to the
requirements of IEC 364 (DIN 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 main circuit of the pump type SR25.X-X must be equipped with a fuse (0.25 A
recommended) corresponding to the nominal current (over current protection EN 60335-1);
•A device to separate the motor from the power supply needs to be provided as part of the
electrical installation (EN 60335-1);
•The pump must be installed in such a way, that contact with alive parts (connections, possibly
windings) is impossible.
13 START-UP
Specific safety instructions for media being handled must be observed. Before pumping a medium, the
compatibility of the flexible tube material with the medium must be checked.
Before initial start-up and during operation, make sure to follow these instructions:
•Do not exceed the maximum allowed operating pressure (see technical data).
•For required ambient conditions: see technical data.
14 CLOSING DOWN
Note
The installation site of the pump must be frost free at all times! Even if pump
is not in use!
•If the pump is turned off, make sure to adjust the operating pressure to atmospheric pressure.
No other measures need to be taken.

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15 MAINTENANCE
Before starting any maintenance work, make sure that any work done on the device is in compliance
with all relevant regulations and standards.
Warning
Inhalation hazard possible, if using toxic or asphyxiant gases!
Purge peristaltic pump with inert gas or air before opening! If the pump is
used for toxic gas or asphyxiant (oxygen-displacing) gas, it needs to be
purged with inert gas or air before opening. Follow closely all relevant
occupational safety regulations during operation.
Warning
Disconnect power supply before opening the device for access.
Make sure that all external power supplies are disconnected.
Aggressive condensate possible!
Media residues in tubing!
Chemical burns caused by aggressive media possible!
Wear protective gloves and protective glasses!
Wear proper protective clothing!
Peristaltic pump is under pressure! Do not open housing!
A peristaltic pump might be part of a system, which is under pressure.
Check pressure before opening peristaltic pump, and adjust pressure to
atmosheric pressure.
Flexible tube, conveying belt, contact pulleys and contact springs are the only parts of the pump subject
to wear. They are simple to change.
Note
If you send back the peristaltic pump to the M&C service for repair, please
let us know what kind of condensate has been pumped.
Before sending the pump back clean all parts from dangerous or highly
aggressive contaminants.

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15.1CHANGING THE PUMP TUBING
1 Conveying belt
2 S-bolt
3 Tubing set
4 contact pulley
5 springs
Figure 7 Changing the pump tubing
For changing the pump tubing please proceed as follows:
•Unplug the pump from the mains voltage. The device needs to be voltage free.
•
•Press conveying belt at the recessed grips and turn S-bolt clockwise up to limit stop;
•Take away conveying belt and remove the old tubing set from the guides by pulling on the
tube connectors;
•Press the two contact pulleys and check whether the spring pressure is still sufficient, if not,
the contact springs have to be changed (see chapter 15.2);
•Put the new tubing set with the tube connectors into the guides of the conveying belt ;
Note
Only the usage of the original tubing set guarantees a proper functionality.
Never lubricate the tube.
Before mounting the pump check all parts for contaminations and clean if
necessary.
•Put the conveying belt with the new tubing into the dovetail guide of the pump body;
•Press conveying belt at the recessed grips and simultaneously turn the S-bolt anticlockwise
until it snaps;
•Switch on pump.
Figure 8 Different pump tube sizes

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15.2CHANGING CONTACT PULLEYS AND SPRINGS
Note
While mounting, make sure that the center of rotation and the driver
are aligned.
Use genuine spare parts only!
Follow these instructions to change the contact pulley and springs:
•Disconnect the peristaltic pump from power supply;
•Unscrew nuts of the pump head (wrench size 5.5) ;
1 Pump head nuts
2 Pump head
3 Springs
4 Groove
5Driver (roll carrier)
6Collar of the shaft bore
Figure 9 Disassembly of pump head and driver
•Remove the pump head from the motor shaft
•Now the driver can be removed from the pump head and is ready for maintenance.
•The removal of the springs .4 pcs.) away from the driver is easily possible without the aid of
any tools. For this take spring out of the groove near to the shaft bore.
•Dismount roller axes and change contact pulleys. Take care that axes are not worn out by the
springs and have damaged the dent at the axes front end. In case of abrasion the axes have to
be changed (see Figure 10).
Figure 10 Check of axes and rolls
The dent prevents
rotation of the axis
new
worn out

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Note
The springs may come in different colorings. This is not a quality impairment.
Make sure to use the right spring strength. This can be identified by the spring
wire diameter. The ‘standard version for Novoprene pump tubing’(Part No.
90P1010) has a diameter of 1.1 mm and the ‘reinforced version for FPM-,
Acidflex- or Masterflex-tubing’(Part No. 90P1015) has a diameter of 1.2 mm.
Note
Two different types of springs are mounted inside the driver (right and left
springs) for the first delivery. When spare springs are ordered, for simplified
storage, only one type will be delivered (right spring) which can be used for all
four springs and will replace without any problems the initial springs. The
replacement springs guarantee full functionality when all four springs are
replaced.
•Make sure that contact pulleys move easily on the axis. After remounting the axis with contact
pulley into the driver the spring has to be mountedas shown as in Figure 10. Please pay attention
to the alignment of the dent.
15.2.1 REASSEMBLY OF THE DRIVER
Reassemble the driver in reverse order:
•Insert the roll carrier back into the pump head.
•Push the pump head with the roll carrier onto the motor shaft .
•Tighten the nuts of the pump head fastening (SW 5.5) .
Note
While mounting, make sure that the center of rotation and the roll carrier (driver)
are aligned.
Make sure that the collar of the shaft bore (see figure 9) faces towards the front
of the pump head while mounting the roll carrier.
Use genuine spare parts only !