M&C EC Series User manual

Electric Gas Cooler Series EC®
ECS-SS HF EX2
II 3 G Ex nA nC IIC T4 Gc
Instruction Manual
Version 1.00.00

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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 our products in German and English.
This Instruction Manual does not claim completeness and may be
subject to technical modifications.
© 03/2019
M&C TechGroup
Germany GmbH. Reproduction of this
document or its content is not allowed without permission from
M&C.
EC
®is a registered trade mark.
Version
1.00.00

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List of Contents
1General information ................................................................................................................ 4
2Declaration of conformity....................................................................................................... 4
3Safety instructions.................................................................................................................. 5
4Information and safety instructions for using the cooler in hazardous areas.................... 5
5Warranty .................................................................................................................................. 6
6Used terms and signal indications ........................................................................................ 6
7Introduction ............................................................................................................................. 8
8Application .............................................................................................................................. 8
9Technical data ......................................................................................................................... 9
10 Description ............................................................................................................................ 10
11 Function................................................................................................................................. 11
12 Reception and storage.......................................................................................................... 12
13 Installation instructions........................................................................................................ 12
14 Supply connections .............................................................................................................. 13
14.1 Hose connections .......................................................................................................... 13
14.2 Electrical connections .................................................................................................... 13
15 Start-up .................................................................................................................................. 15
16 Closing down......................................................................................................................... 16
17 Maintenance .......................................................................................................................... 17
17.1 Cleaning the fins of the condenser ................................................................................. 17
17.2 Maintenance of the optional mounted peristaltic pump, type SR25.6 ............................. 18
17.2.1 Changing the pump tubing....................................................................................... 19
17.2.2 Changing contact pulleys and springs...................................................................... 20
17.2.3 Reassembly of the driver ......................................................................................... 21
17.2.4 Cleaning the pump head.......................................................................................... 22
18 Operating of the built-in electronic temperature controller ............................................... 23
18.1 Changing the set value .................................................................................................. 23
18.2 Changing the temperature alarm window ....................................................................... 23
19 Trouble shooting................................................................................................................... 24
20 Spare parts list ...................................................................................................................... 25
21 Appendix................................................................................................................................ 26
List of Illustrations
Figure 1 Example of application of ECS-SS HF ............................................................................ 8
Figure 2 ECS-SS HF EX2 ............................................................................................................10
Figure 3 Electrical connection ECS-SS HF EX2...........................................................................14
Figure 4 Changing the pump tubing .............................................................................................19
Figure 5 Different pump tube sizes...............................................................................................19
Figure 6 Disassembly of pump head and driver ...........................................................................20
Figure 7 Check of axes and rolls..................................................................................................21
Figure 8 Front view of the temperature controller
.........................................................................23
Figure 9 Sample gas outlet dew point characteristics...................................................................27
Figure 10 Circuit diagram ECS-SS HF EX2 ...................................................................................28
Figure 11 EC declaration of conformity ..........................................................................................29

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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 EC 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.
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 basic safety procedures when using this equipment:
Read these operating instructions carefully before start-up and use of the equipment! The information
and warnings given in these operating instructions must be heeded.
Work on electrical equipment is only to be carried out by trained specialists as per the regulations
currently in force.
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. Also EN 60079-14 has to be fulfilled.
For use in hazardous area observe the relevant national and international instructions and regulations.
Check the details on the type plate to ensure that the equipment is connected up to the correct mains
voltage.
Protection against touching dangerously high electrical voltages. Before opening the equipment, it must
be switched and hold no voltages. This also applies to any external control circuits that are connected.
The device needs to be mounted inside a housing or cabinet with protection class IP54 or higher,
complying with the IEC 60079-0 standard.
Use the device only in permitted temperature and pressure ranges.
Opening the enclosure is only permitted in an Ex-free environment.
Check that the location is weather-protected. It should not be subjected to either direct rain or moisture.
Installation, maintenance, monitoring and any repairs may only be done by authorised personnel with
respect to the relevant stipulations.
4 INFORMATION AND SAFETY INSTRUCTIONS FOR USING THE COOLER IN
HAZARDOUS AREAS
The compressor cooler ECS-SS HF EX2 is suitable for use in hazardous area category 3G.
Type of explosion protection: II 3 G Ex nA nC IIC T4 Gc
Any change in the standard configuration with unspecified or not M&C approved parts, as well as repair
and service with unspecified parts will result in the loss of Ex certification.
In case of doubt, please contact M&C or your M&C distributor directly.

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5 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.
Return deliveries must be made in appropriate and proper protective packaging. Please do not send
glass heat exchanger with the unit.
6 USED TERMS AND SIGNAL INDICATIONS
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,
commissioning, maintenance
and operation of these types of
products. The following knowledge is at least required for the work:
•Instructed person in EX-protection
•Trained person in the electrotechnical field
•Detailed knowledge of the manual and the applic
able safety
regulations
‘Ex‘ indicates important information about the product or about the
corresponding parts in the instruction manual, relating to usage in
potentially explosive atmospheres.

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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.
Contains gas under pressure. Do not open container!
Check pressure before opening container, and adjust pressure to
atmosheric pressure.
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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7 INTRODUCTION
The ECS-SS HF EX2 gas cooler is used in gas analysis to lower the dew point of high flow rates of
humid gases to avoid condensation in the analyzer for applications where fast response times are
requested. An extremely stable gas dew point avoids water vapor cross sensitivity and volumetric errors.
8 APPLICATION
Figure 1shows a typical example of an application for installation of an ECS-SS HF EX2 gas cooler unit.
Gas sample probe SP... 3-way ball valve Ultrafine filter FP...
Heated sample line Peristaltic pumpSR25.6 Aerosol filter CLF
ECS-SS HF EX2 cooler Diaphragm pump MP Flow meter FM
Analyser
Figure 1 Example of application of ECS-SS HF
The gas to be measured is extracted with a gas sample pump via a gas sample probe and a
heated sample line and cooled down in the gas cooler ECS-SS HF EX2 to a dew point of +5 °C
[41 °F]. The emerging condensate is removed by a peristaltic pump or a collecting vessel . The
ultrafine filter located afterwards removes solid particles. For increased operating safety of the entire
system we recommend installing an ultrafine filter with a liquid alarm sensor. If required an aerosol
filter can be installed downstream the flow meter . The gas thus treated can now be passed into
the analyzer . For calibration of the analyzer a ball-valve is existing.

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9 TECHNICAL DATA
Gas Cooler Series EC®
ECS-SS HF EX2
Protection class
II 3 G Ex nA nC IIC T4 Gc
Number of heat exchanger
1
Gas flow rate
1500 Nl/h* for gas inlet dew point 70 °C [158 °F] and 1000
Nl/h* for gas inlet dew point 80 °C [176 °F]
Ambient temperature
+5 to +40 °C [41 to 104 °F]
Storage temperature
-20 to +60 °C [-4 to 140 °F]
Sample outlet dew point
Range of adjustment: 0 to +7 °C [32 to 44.6 °F], factory
setting: +5 °C (±1°C) [41 °F (±1.8 °F)]
Dew point stability
At constant conditions ±0.2 °C [±0.36 °F]
Sample inlet temperature
Max. 180 °C* [356 °F*]
Sample inlet dew point
Max. 80 °C* [176 °F*]
Total cooling power
Max. 1400 KJ/h (390 W) at 25 °C [77 °F] ambient
temperature
Power consumption
450 VA
Main connection
230 V ±10%, 50 Hz, optional 115 V ±10 %, 60 Hz
Ready for working
Approx. 10 min at ambient temperature
Electrical connection
2,5 mm2 terminals
cable entry: 2 x M20 x 1,5, clamping range: 6 to 12 mm
Status alarm
1 free configurable status alarm with 2 potential free
changeover contacts switching point: ±3 °C [±5.4 °F] to set
point, Contact rating: 250 V, 2 A, 500 VA, 50 W
230 V or 115 V:
II 3 G Ex nA nC IIC T4 Gc
Case protection
IP20; EN 60529
Electrical standard
EN 61010
Case color
RAL 9003
Method of mounting
Wall mounting
Dimension/Weight
84HP x 7U x 360 mm [14.2“]/ 28 kg [61.7 lbs]
Material of heat exchanger
Stainless steel 316Ti
Gas pressure
Max. 5bar or 2 bar abs. with built-in peristaltic pumps
Sample gas connection
G 1/4’’ i
Condensate connection
G 3/8’’ i
∆P at 100 l/h
6 mbar
Dead volume per heat exchanger
0,85 l
Options
01P9150
Extra charge for 1-piece peristaltic pump SR25.6 integrated
in the front plate of the cooler, completely mounted, cooler
weight plus 0.6 kg [1.3 lb]. Sample gas pressure with built-in
peristaltic pumps max. 2 bar abs.
* Maximum values in technical data must be rated in consideration of total cooling capacity at 25 °C [77 °F]
ambient temperature and an outlet dew point of 5 °C [41 °F].
(a) Addition to part number for execution in 115 V

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10 DESCRIPTION
High-output, maintenance-free and self-controlling. Intelligent detailed solutions provide optimum
cooling of the sample gas and direct separation of condensate to avoid contamination effects.
The new controlled compressor cooling system and the special design of the jet stream heat exchanger
guarantee an optimum dew point reduction to a low, stable value. An additional pre-drainage device is
not necessary in standard applications.
The condensate should be removed with integrated small peristaltic pump SR25.6 or optionally by
external condensate traps AD... respectively collection vessels TG../TK…
The digital display in the front plate indicates the present cooling temperature.
A temperature deviation of ±3 °C [±5.4 °F] triggers an alarm that can be controlled externally via the
alarm contact. The gas coolers are self-controlling and maintenance-free in operation.
Figure 2 ECS-SS HF EX2
The ECS-SS HF EX2 is suitable for wall mounting.
On top of the cooler housing there are cutouts for sample gas in- and outlet.
In the back part of the cooler housing the condenser for compressor waste heat dissipation is visible.
Power supply, electronic control board and contact output of the status alarms are located behind the
dismountable front plate of the cooler housing.
At the bottom of the housing there are the following standard connections:
Standard-condensate outlet of the heat exchanger;
Cable bushings 2 x M20 x 1.5, clamping range: 6 to 12 mm.
The condensate removal takes place at excess pressure operation with automatic liquid drainer e.g.
type AD-.. and at low pressure operation (pump downstream cooler) with peristaltic pump type SR25.6
or with condensate collecting vessel.

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11 FUNCTION
The especially for gas analysis designed M&C ECS-SS HF EX2 gas cooler is a compressor cooler
equipped with status alarm for safe continuous operation. The heat exchanger made of stainless steel
works on the principle of Jet-Stream. The construction of the Jet-Stream-heat exchanger ensures a
good condensate pre-separation and an optimal drying of the sample gas.
The compressor cooling system keeps the temperature on a constant value of +5 °C [41 °F]. The control
of the compressor cooling system happens via contactless and therefore wear free electronic control.
Alarm warnings for excess- and low-temperature are given as a collective status alarm via a relay output
with two potential-free changeover contacts. Alarm will be released if the current temperature is out of
a range of ±3 °C [±5.4 °F] referring to the set-temperature (+5°C [41 °F]) .

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12 RECEPTION AND STORAGE
The ECS-SS HF EX2 gas cooler is a complete pre-installed unit.
•Remove the cooler and any special accessories immediately after arrival carefully from the shipping
packaging, and check the scope of delivery according to the delivery note;
•Check the goods for possible transport damage and, if necessary, inform your transport insurance
company immediately about any damage!
Note
The cooler must be stored in a weather-protected frost-free area!
Note
During transport and when in storage, the cooler must always be stood up with the
transport feet positioned underneath so that the oil in the closed compressor circuit
cannot run out of this compressor case. If the cooler is transported on its back by
mist
ake, it must stood in the operating position for approx. 24 hours before it is
switched on!
13 INSTALLATION INSTRUCTIONS
The ECS-SS HF EX2 cooler is suitable for wall mounting.
Note
Please state the desired type of mounting when ordering so that the LED function
display can be positioned to match at the factory!
Note
The operating position for this cooler is exclusively vertical. This is the only way to
ensure proper separation and removal of condensate in the heat exchangers.
During transport and installation, the cooler must always be stood up with the
transport feet positioned underneath so that the oil in the closed compressor circuit
cannot run out of the compressor case.
The cooler should be kept away from sources of heat and well ventilated when
installed, so that condensation from warmth will not occur and interfere with
operation.
The minimum installation dimensions (Figure 2) must be followed without fail. If the
unit is installed in the open, the cooler must be installed in a housing that is frost-
free in winter and adequately ventilated in summer. Avoid locating the unit in direct
sunlight.
Unheated gas sample lines must be provided with slope up to the cooler. In that
case pre-separation of the condensate is not required.
Connect the heated sample line with sufficient thermal decoupling to the cooler!

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14 SUPPLY CONNECTIONS
14.1 HOSE CONNECTIONS
The connection for sample gas in- and outlet is located on the upper part of the heat exchangers at the
G ¼” female threads. Correspondingly tube or hose connectors are optional available at M&C.
Note
Do not mix up the tube connections for sample gas inlet and outlet; connections are
marked by arrows on the heat exchangers.
After connecting all lines, check the tightness of the connections.
To ensure free removal of the condensate, do not reduce the specified discharge
cross sections!
Ensure that the connections are sealed adequately by noting the following:
•The correspondingly dimensioned tube fitting with connecting thread must be screwed in with PTFE
sealing tape.
•For a functional and trouble-free installation, only use connections acc. to EN 10226-1 with tapered
R-thread in conjunction with a suitable sealing tape/sealing fluid.
The connection of the condensate removal is located at the bottom of the cooler at the G 3/8“ female
thread of the heat exchanger by means of an adequate hose resp. tube fitting (fig.2).
Condensate removal is done by customer according to the type of operation with:
•Automatic float-type condensate traps AD-... only for over-pressure operation,
Note
If the stainless steel heat exchanger with G 3/8" condensate connection is used, the
automatic liquid drainer AD-
SS can be mounted directly using a threaded adapter,
article no. FF 11000 (1/2" NPT to G 3/8" i). This eliminates the otherwise necessary
wall mounting!
•Condensate collecting vessels with manual condensate discharge,
•peristaltic pump.
Option: automatic condensate removal with peristaltic pump SR25.6
In case of peristaltic pumps type SR25.6, is built-in to the front plate, the condensate outlet 4/6 mm tube
is provided directly at the corresponding pump.
14.2 ELECTRICAL CONNECTIONS
Warning
When connecting the equipment, make sure that the supply voltage is
identical with the information provided on the model type plate.
Cooler versions with 115 V or 120 V have a built-in transformer to
generate an internal current of 230 V. That means, device internal live
parts have a current of 230 V not 115 V/120 V.

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Warning
Only carry out work on live parts, when the area has been proved to be
„safe“.
Only carry out work on the protective cover in front of the temperature
controller, when the area has been proved to be „safe“.
NOTE!
Attention must be paid to the requirements of IEC 364 (DIN VDE 0100)
when setting high-power electrical units with nominal voltages of up to
1000 V, together with the associated standards and stipulations.
The main circuit must be equipped with a fuse of 10AT(wire protection,
protection against short circuits). A motor circuit braker is integrated in
the device !
Figure 3 Electrical connection ECS-SS HF EX2
Power : 230 V 50/60 Hz or 115 V
50/60 Hz (s. type plate)
Status alarm : 2 potential free change
over contacts
Switching capacity : 250 V, 2 A,
500 VA or 250 V, 2 A, 50 W

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The power connections are located behind the removable front plate of the cooler housing at terminal
X0. The potential free contact outputs of the collective status alarm are to be connected at terminal X3.
For the cable bushings through the bottom plate of the cooler housing 2 cable glands 2 x M20 x 1.5,
clamping range 6-12 mm are available (see Figure 2).
15 START-UP
Qualified personnel
The work described in this chapter can be carried out by qualified
personnel. The following knowledge is at least required for the work:
•Instructed person in EX-protection
•Trained person in the electrotechnical field
•
Detailed knowledge of the manual and the applicable safety
regulations
The operator must ensure that all work on the ECS-SS HF EX2 is carried out only by authorised and
qualified personnel. Observe the plant- and process-specific regulations and the regulations which are
applicable to Ex zones.
Any work must only be carried out after the EX-free measurement has been completed. Immediately
after finishing the work, all safety and protective devices must be reattached or put into operation and
tested.
The automatic control electronics of the ECS-SS HF EX2 permit automatic start-up of the cooler.
The following description is valid for start-up of the gas cooler for an ambient temperature > 8 °C
[46.4 °F].
Only carry out any work at the gas cooler, when the process and the environment
of the cooler is declared as an explosion-free zone. A zone is declared as
explosion-free zone, if it is free of explosive atmosphere.
Only open the protective cover in front of the temperature controller, when the
process and the environment of the cooler is declared as an explosion-free zone.
A zone is declared as explosion-free zone, if it is free of explosive atmosphere.
Note
Before starting up the gas cooler, it must be placed its operating position for at
least two hours. The liquid inside the system may have been redistributed, and
this could cause problems in operating!
Warning
Connect the cooler to earth (electrical bonding terminal).
The bleeder resistor needs to have an overall value of < 106Ω.
The following steps should be carried out before initial start-up:
•Connect the cooler unit to the mains power supply; Check that the equipment is connected to the
correct mains voltage, 115 V or 230 V, as shown on the type plate!
•Lead the status contacts for reporting of low- and excess-temperature to the measuring station;

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Note
The status contacts must be connected to the external sample gas pump or to a
valve in the sample gas line to protect the entire analysis system by immediately
cutting off the gas supply in the event of error messages from the cooler!
16 CLOSING DOWN
Note
The site where the cooler is installed, must also remain frost-
free even
when the unit is switched off.
No special measures need to be taken if the cooler is taken out of service for a short time.
If the cooler is to be taken out of service for a longer period, we recommend flushing it with inert gas or
air. Residual condensate should be completely removed from the cooler.
Aggressive condensate is possible.
May cause chemical burns due to aggressive media!
Wear protective gloves and protective glasses!
Wear proper protective clothing!

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17 MAINTENANCE
Qualified personnel
The inspections and maintenance work described in this chapter can be
carried out by qualified personnel. The following knowledge is at least
required for the work:
•Instructed person in EX-protection
•Trained person in the electrotechnical field
•Detailed
knowledge of the manual and the applicable safety
regulations
The operator must ensure that all work on the ECS-SS HF EX2 is carried out only by authorised and
qualified personnel. Observe the plant- and process-specific regulations and the regulations which are
applicable to Ex zones.
Any work must only be carried out after the EX-free measurement has been completed. Immediately
after finishing the work, all safety and protective devices must be reattached or put into operation and
tested.
Warning
High Voltage.
Before opening the enclosure, disconnect the cooler from the power
supply!
Do not open in hazardous areas.
When opening the electronics housing (pressure-
resistant enclosure),
make sure that the transmission paths of an internal ignition (blank
surfaces and threads on the enclosure base and cover) are absolutely
clean and undamaged. If the surface or thread is damaged, the enclosure
must be replaced.
The ECS-SS HF EX2 cooler does not require any special maintenance intervals.
Depending on the degree of contamination of the ambient air, the cooling fin block must be cleaned from
time to time with compressed air.
When using an automatic condensate disposal system with peristaltic pumps, depending on the
operating conditions, the pump tubing must be checked quarterly or semi-annually and replaced if
necessary. Refer to the corresponding SR25.6instruction manual for instructions on how to replace the
tubing.
17.1 CLEANING THE FINS OF THE CONDENSER
Dust on the fins of the condenser reduces the cooling capacity. Therefore it is necessary to clean the
fins from time to time. The following steps are recommended:
•Shut off the gas flow;
•Take off the cooler of the mains
•Clean the fins carefully with compressed air;

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17.2 MAINTENANCE OF THE OPTIONAL MOUNTED PERISTALTIC PUMP, TYPE
SR25.6
Before starting any maintenance work, make sure that any work done on the device is in compliance
with all relevant regulations and standards.
Warning
Dangerous voltage!
Disconnect power supply before opening the device for access.
Make sure that all external power supplies are disconnected.
The plug is only allowed to be pulled in
case the cooler has been taken off
the mains or the surrounding area is declared as “safe” area.
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.
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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17.2.1 CHANGING THE PUMP TUBING
1 Conveying belt
2 S-bolt
3 Tubing set
4 contact pulley
5 springs
Figure 4 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.
•Open tube connections at the pump;
•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 17.2.2);
•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 5 Different pump tube sizes

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17.2.2 CHANGING 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 6 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 7).