M&C EC Series User manual

Electric Gas Cooler Series EC®
ECM
Instruction Manual
Version 1.02.00

2 ECM | 1.02.00 www.mc-techgroup.com
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 Operating Manual does not claim completeness and may be subject to
technical modifications.
©
02/2024 M&C TechGroup
Germany GmbH. Reproduction of this document or
its content is not allowed without permission from
M&C
ECM
®is a registered trademark.
With the release of this version all older manual versions will no longer be valid.
The German instruction manual is the original instruction manual. In case of
arbitration only the German wording shall be valid and binding.
Version: 1.0
2.00

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Content
1General information.........................................................................................................................................5
2Declaration of conformity...............................................................................................................................5
3Safety instructions ...........................................................................................................................................6
4Warranty ............................................................................................................................................................6
5Used terms and signal indications.................................................................................................................7
6Introduction ......................................................................................................................................................9
6.1 Serial number.........................................................................................................................................................................................................9
7Application ......................................................................................................................................................10
8Technical Data.................................................................................................................................................11
8.1 For basic cooler ECM without heat exchanger ..............................................................................................................................11
8.2 Options for basic cooler ECM....................................................................................................................................................................12
9Description ......................................................................................................................................................12
10 Function ...........................................................................................................................................................13
11 Reception and storage ..................................................................................................................................14
12 Installation instructions ................................................................................................................................15
13 Hose connections ...........................................................................................................................................15
14 Electrical connections....................................................................................................................................17
15 Preparations for commissioning..................................................................................................................18
16 Start-up ............................................................................................................................................................18
17 Closing down ..................................................................................................................................................19
18 Maintenance ...................................................................................................................................................20
18.1 Adding and replacing the heat exchangers.....................................................................................................................................20
18.2 Cleaning the fins of the condenser........................................................................................................................................................21
18.3 Maintenance of the optional mounted peristaltic pump(s), type SR25.2......................................................................21
18.3.1 Mounting instructions for SR25.2 peristaltic pump (optional)..................................................................................22
18.3.2 Changing the pump tubing...........................................................................................................................................................23
18.3.3 Changing contact pulleys and springs ....................................................................................................................................24
18.3.4 Reassembly of the driver...................................................................................................................................................................26
18.3.5 Cleaning the pump head.................................................................................................................................................................26
18.3.6 Repair information for integrated peristaltic pump type SR25.2 (optional)......................................................26
19 Operating of the built-in electronic temperature controller ..................................................................27
19.1 Temperature controller version until March 2022........................................................................................................................27
19.1.1 Changing the set value......................................................................................................................................................................28
19.2 Temperature controller version starting April 2022 ....................................................................................................................28
19.2.1 Changing the set value......................................................................................................................................................................28
19.3 Temperature controller version starting 09.2023 ........................................................................................................................28
19.3.1 Changing the setpoint.......................................................................................................................................................................29
20 Trouble shooting............................................................................................................................................29
21 Proper disposal of the device.......................................................................................................................30
22 Spare parts list ................................................................................................................................................31
23 Risk assessment ..............................................................................................................................................32
24 Appendix .........................................................................................................................................................35

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List of illustrations
Figure 1 Type plate......................................................................................................................................................................................................9
Figure 2 Application example of the ECM.................................................................................................................................................10
Figure 3 ECM-2G........................................................................................................................................................................................................ 12
Figure 4 Schematic diagram of the heat exchanger function ......................................................................................................14
Figure 5 Gas and condensate connections ..............................................................................................................................................15
Figure 6 Electrical sockets alarm contact....................................................................................................................................................17
Figure 7 SR25.2: Mounting distance between front panel and pump motor..................................................................... 22
Figure 8 Changing the pump tubing...........................................................................................................................................................23
Figure 9 Different pump tube sizes ...............................................................................................................................................................24
Figure 10 Disassembly of pump head and driver....................................................................................................................................24
Figure 11 Check of axes and rolls....................................................................................................................................................................... 25
Figure 12 Hysteresis behavior of the status alarm at factory settings......................................................................................... 27
Figure 13 Front view of the temperature controller version until 03.2022.............................................................................. 27
Figure 14 Front view of the temperature controller version starting 04.2022....................................................................... 28
Figure 15 Front view of the temperature controller version starting 09.2023....................................................................... 28
Figure 16 Overview risk assessment................................................................................................................................................................. 33
Figure 17 Dependency of gas outlet dew point at a gas inlet point of 60 °C [140 °F]...................................................... 35
Figure 18 Circuit diagram ECM............................................................................................................................................................................36
Figure 19 ECM compressor connection.........................................................................................................................................................37

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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
1GENERAL 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, 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.
2DECLARATION OF CONFORMITY
CE - Certification
The product described in this operating manual complies with the following EU directives:
EMV-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.
CSA - Certification
The product described in this operating manual complies with the following CSA directive:
CAN/CSA-C22.2 No.61010.1-04 UL Std.61010-1 (3 Edition).

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3SAFETY INSTRUCTIONS
Please take care of the following basic safety procedures when mounting, starting up or operating this
equipment:
•Read this operating manual before starting up and use of the equipment. The information and warnings
given in this operating manual must be heeded.
•Any work on electrical equipment is only to be carried out by trained specialists as per the regulations
currently in force.
•Attention must be paid to the requirements of VDE 0100 (IEC 364) when setting high-power electrical units
with nominal voltages of up to 1000 V, together with the associated standards and stipulations.
•Check the details on the type plate to ensure that the equipment is connected to the correct mains voltage.
•Protection against touching dangerously high electrical voltages:
Before opening the equipment, it must be switched off and hold no voltages. This also applies to any
external control circuits that are connected.
•The device is only to be used within the permitted range of temperatures and pressures.
•Check that the location is weather-protected. It should not be subject to either direct rain, sun or moisture.
•Do not use the device in hazardous areas.
•Installation, maintenance, inspections and any repairs of the devices must be carried out only by qualified
skilled personnel in compliance with the current regulations.
4WARRANTY
In case of a device failure, please contact immediately M&C or your M&C authorized distributor.
We have a warranty period of 12 months from the delivery date. The warranty covers only appropriately used
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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5USED 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,
mounting, commissioning and operation of these types of products.
High voltages!
Protect yourself and others against damage which might be caused by high
voltages.
Toxic!
Acute toxicity (oral, dermal, inhalation)! Toxic when in contact with skin,
swallowed or inhaled.
Corrosive!
These substances destroy living tissue and equipment upon contact.
Do not breathe vapors; avoid contact with skin and eyes.
Contains gas under pressure. Do not open container!
Check pressure before opening container, and adjust pressure to
atmospheric pressure.

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Hot surface!
Contact may cause burn! Do not touch!
Caution, risk of being crushed due to rotating parts.
Do not open the device. Use personal protective equipment (PPE).
Wear protective gloves!
Working with chemicals, sharp objects or extreme
ly high temperatures
requires wearing protective gloves.
Wear safety glasses!
Protect your
eyes while working with chemicals or sharp objects. Wear
safety glasses to avoid getting something in your eyes.
Wear protective clothes!
Working with chemicals, sharp objects or extreme
ly high temperatures
requires wearing protective clothes.
Use foot protection
Use safety helmet and full protective goggles

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6INTRODUCTION
The M&C cooler ECM is used for applications where interfering moisture loading in the sample gas is to be
expected.
By lowering to a very low stable dew point, condensation is prevented in the analyzer and a fluctuating
measurement value due to water vapour cross sensitivities or volumetric errors is avoided.
6.1 SERIAL NUMBER
The type plate with the serial number is located on the right side of the cooler housing (wall-mount). Please always
quote the serial number in case of queries and spare parts orders.
Figure 1 Type plate

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7APPLICATION
Figure 2 shows a typical example of an application for installation of an ECM gas cooler unit.




Sample gas IN
+5°C
[41 °F]
ECM-1





Alternative to peristaltic pump:
Collecting vessel
Test
gas IN
Figure 2 Application example of the ECM
Sample probe SP
Heated sample line
ECM cooler
3-way ball valve
Peristaltic pump SR25 (option)
Membran pump
Super fine filter FP
Aerosol filter CLF-5
Flow meter FM10
Analyzer
The gas to be measured is taken from the ECM gas cooler by a gas sample probe via a heated sample line 
and cooled down to a dew point of +5 °C [41 °F]. The super-fine filter located afterwards removes solid particles.
For increased operating safety of the entire system we recommend installing a super-fine filter with a liquid
alarm sensor. If required an aerosol filter can be installed in front of the flow meter . The gas thus treated can
now be passed into the analyzer .

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8TECHNICAL DATA
8.1 FOR BASIC COOLER ECM WITHOUT HEAT EXCHANGER
Gas cooler series EC
Version ECM-1
Version ECM-2
Part No. for 240 V, 50-60 Hz
02K7500X*
02K7510X*
Part No. for 120 V, 50-60 Hz
02K7500Xa*
02K7510Xa*
Amount of possible heat exchangers
1 heat exchanger
2 heat exchangers
Sample outlet dew point
Range of adjustment: +2 to +7 °C [35.6 to 44.6 °F], factory setting: +5 °C [41 °F]
Dew point stability
At const. conditions: < ±0.1 °C [±0.18 °F]
Sample inlet temperature
**Max. +180 °C [356 °F]
Sample inlet dew point
**Max. +80 °C [176 °F]
Gas flow rate
**Max. 250 l/h
**Max. 2 x 150 l/h
Ambient temperature
+10 to +50 °C [50 to 122 °F]
Max relative humidity
80 % at temperatures up to 31 °C, decreasing linearly to 50 % at 40 °C
Storage temperature
-20 to +60 °C [-4 to 140 °F]
Total cooling capacity
40 W at 10 to 50 °C [50 °F to 122 °F] ambient temperature
Ready for working
< 15 min
Power consumption
Max. 200 VA (start up current at 240 V, 50-60 Hz = 2.5 A; at 120 V, 50-60 Hz = 4.5
A)
Main power connection
240 V, 50-60 Hz/120 V, 50-60 Hz, -15/+10 %
Electrical connections
Terminals: 2.5 mm
2
, tightening torque for terminals X1 and X3: 0.5 to 0.6 Nm,
cable glands: 2 x M20 x 1.5, clamping range: 6-12 mm
Status alarm
1 free configurable status alarm with 2 potential free change-over contacts,
contact rating 250 V AC, 2 A; 500 VA; 50 W, see chapter 18, Figure 12 for under
and over temperature settings
Electrical safety
EN
EN 61010
UL Std. No. 61010-1(3 Edition) and
61010.1-04 61010-2-011
Installation sites
The cooler is intended for indoor use.
The maximum altitude is 2,000 m above sea level.
Overvoltage category/
Pollution degree
II/2
Refrigerant
R134a, content: 130 g [≈ 0.3 lb], max. operating pressure: 17 bar
System of protection
IP20 (EN 60529)
Case colour
RAL 9003
Method of mounting
Wall-mount
Dimensions (W x H x D)
Weight
270 x 270 x 316 mm [≈ 10.6” x 10.6” x 12.4”]
Version: 240 V, 50-60 Hz: 12 kg [≈ 26.5 lbs]
Version: 120 V, 50-60 Hz: 13.5 kg [≈ 29.8 lbs]
* Option
**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].

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8.2 OPTIONS FOR BASIC COOLER ECM
Heat exchanger type
ECM-1G
ECM-1PV
ECM-1SS
ECM-2G
ECM-2PV
ECM-2SS
Part No.
93K0140
93K0170
93K0160
97K0100
97K0110
97K0115
Material of heat
exchanger
Borosilicate
glass
PVDF
Stainless steel
316Ti
Borosilicate
glass
PVDF
Stainless steel
316Ti
Max. gas flow rate
250 Nl/h
250 Nl/h
250 Nl/h
150 Nl/h
150 Nl/h
150 Nl/h
Sample gas pressure abs.
Max. 2 bar
(3 bar)
1
Max. 3 bar
Max.
10 bar
Max. 2 bar
(3 bar)
1
Max. 3 bar
Max. 10 bar
Sample gas connection
GL18
for Ø 6 mm
a.d. tube*
G1/4“ i
G1/4“ i
or 1/4“ NPT**
GL18
for Ø 6 mm
a.d. tube*
Tube
Ø 6 mm*
Tube
Ø 6 mm*
Condensate connection
GL25 for Ø 12
mm tube*
Ø 8 mm or
Ø 10 mm**
G3/8“ i
G3/8“ i o.
3/8“ NPT**
GL25 for Ø12
mm tube*
Ø 8 mm or
Ø 10 mm**
G3/8“ i
G3/8“ i o.
3/8“ NPT**
∆
P at max. flow
1 mbar
1 mbar
1 mbar
1 mbar
1 mbar
1 mbar
Stagnant space approx.
100 ml
100 ml
100 ml
40 ml
25 ml
30 ml
Peristaltic pump SR25.2
1 pc. incorporated in the cooler, compl. installed, part no. 01P9125; cooler weight plus 0.6 kg
[≈ 1.32 lb] per pump
the sample gas pressure is limited to 2 bar absolute
* Standard, other version on request 1with GL connecting adapter
** Option
*** 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].
9DESCRIPTION
Figure 3 shows the ECM-2G cooler unit.
Minimum distance
100
[≈ 3.9"]
100
[≈ 3.9"]
EC
Cooler
220 [≈ 8.7"]
240 [≈ 9.4"]
30 [≈ 1.2"]
208 [≈ 8.2"]
270 [≈ 10.6"]
204 [≈ 8.0"]
270 [≈ 10.6"]
46
[≈ 1.8"]
11
[≈ 0.4"]
6 [≈ 0.2"]
84
[≈ 3.3"]
50
[≈ 1.8"]
Ventilation
opening
Compressor
ventilation outlet
Dimensions in mm [Inch]
Figure 3 ECM-2G

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The cooler ECM is equally suitable for wall installation. The depth of the housing of the cooler is 270 mm [≈ 10.6"]
(316 mm [≈ 12.4"] with optional mounted peristaltic pumps).
On the upper side of the cooler housing you will see the cut outs for 1 or 2 heat exchangers. Sample gas enters and
leaves the heat exchangers by the correspondingly connections on the upper part of the heat exchangers (see
chapter 8. technical data).
The main power connector and the contact output for the status alarm can be connected at terminals X1
respectively X3 located behind the removable front panel of the ECM housing.
At the bottom of the housing the following connections are provided as standard:
•standard condensate outlets from the heat exchangers,
•cable bushings 2 x M20 x 1.5 clamping range 6-12 mm;
Condensate disposal is carried out in "negative pressure operation" (pump behind cooler) with peristaltic pumps
of type SR25.2 optionally installed in the cooler or, alternatively, externally using collecting vessels of type TG/TK.
For "overpressure operation", condensate disposal is carried out through automatic float-type condensate traps e.g.
type AD.
10 FUNCTION
The M&C gas cooler ECM, which was specially developed for analytical technology, operates according to the
compressor cooling principle, and is equipped with a status alarm for safe continuous operation.
Up to 2 Jet-stream heat exchangers made of Borosilicate glass, PVDF or stainless steel are located in a heat-insulated
cooling block. All the heat exchangers are easily accessible and are arranged in such a way that they can be removed
very simply.
Figure 4 shows a schematic diagram of the functioning of the heat exchanger: The compressor cooler system has
a heat-insulated cooling block at a constant temperature of +5 °C [41 °F]. The novel construction of the heat
exchanger guarantees a very good pre-separation of condensate and for that reason an optimal drying of sample
gas.

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Figure 4 Schematic diagram of the heat exchanger function
11 RECEPTION AND STORAGE
The ECM gas cooler is a complete pre-installed unit.
Carefully inspect the ECM and any special accessories included with it immediately on arrival by removing them
from the packing and checking for missing articles against the packing list! Check the items for any damage in
transit and, if required, inform the shipping insurance company immediately of the damage found!
Note
The cooler must be stored in a weather protected frost-free area!
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 mistake, it must be placed
in the operating
position for approx. 24 hours before it can be switched on!
+5 °C
[41 °F]
Sample
OUT
Sample
IN
Condensate OUT
Cooling
block

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12 INSTALLATION INSTRUCTIONS
The ECM cooler is suitable for wall mounting.
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 3) 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 of min. 20 cm [≈ 7.9"] to the cooler!
13 HOSE CONNECTIONS
The connection for sample gas inlet and outlet are located on the upper part of the heat exchangers. For possible
connectors see technical data (chapter 8).
1
EC
Cooler
2
3
1 Gas inlet and outlet
2 Condensate outlet
3 Condensate outlet with optional mounted
peristaltic pump
Figure 5 Gas and condensate connections
Correspondingly tube and hose connectors are optional available at M&C.

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Note
Do not mix up the hose connections; the inlet and outlet connections of the heat
exchangers are marked with arrows;
Ensure that the connections are sealed adequately;
To ensure free removal of the condensate, ensure that the listed diameters for the
condensate removal lines are not reduced!
Ensure that the connections are sealed adequately by noting the following:
Borosilicate glass heat exchangers with connections GL18-6 respectively GL25-12 (standard)
•Before assembly, check the GL coupling rings to see if the PTFE/silicon locking rings have been damaged.
•The sealing rings should be installed with the PTFE side facing the medium.
PVDF- resp. stainless steel heat exchangers with G1/4“ i resp. G3/8“ i
•The correspondingly dimensioned tube respectively tube couplings with threaded connections have to be
screwed in with PTFE thread sealing tape.
•To grant a functional and unproblematic mounting we recommend using union pieces with taper pipe
thread type R according to DIN 2999/1 in connection with suitable sealing tape.
Note
When fixing the connectors in the PVDF
respectively stainless steel heat exchanger hold
up with a wrench at the pane of the bolt head!
Option: stainless steel heat exchanger with NPT
•The heat exchangers with NPT threaded connectors are marked with circulated notches.
•In order to ensure the tightness of the connections, the NPT thread must be screwed in with sealant or
fixed with adhesive.
In the standard configuration, the tubes for removal of condensate are connected directly to the heat exchangers.
These protrude with the GL25-12 tube connectors (standard, Borosilicate glass heat exchanger) respectively with
G3/8” (standard) thread joint PVDF or stainless steel heat exchanger above the base plate of the cooler housing
(figure 5).
Condensate removal is done by customer according to the type of operation with:
•peristaltic pump(s) type SR25.2 implemented optionally in the cooler housing,
•external mounted condensate vessel(s) with manually emptying respectively,
•automatic float-type condensate traps type AD (only for over-pressure operation).
Note
When using the stainless steel heat exchanger with G3/8" condensate connection, the
automatic condensate trap AD-SS can be mounted directly using a threaded adapter, part
no. FF11000 (1/2" NPT to G3/8" i). This eliminates the otherwise necessary wall mounting
and piping or tubing of the trap.

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14 ELECTRICAL CONNECTIONS
Caution
Incorrect mains voltage can destroy the device: When connecting the device,
make sure that the mains voltage is correct as specified on the type plate!
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.
An easily accessible main switch with appropriate labeling must be provided
externally.
The main circuit must be equipped with a slow-blow fuse of 10 A (over current
protection); for electrical details see technical data (chapter 8).
Warning
Cooler versions with 120 V have a built-
in transformer to generate an internal
current of 240 V. That means, device internal live parts have a current of 240 V not
120 V.
Figure 6 shows the electrical connection options behind the front panel of the ECM housing:
A freely configurable status alarm with two potential-free changeover contacts is available for alarming the over or
under temperature. An alarm is triggered with factory configuration (gas outlet dew point: 5 °C [41 °F], alarm
window: 3 °C [5.4 °F], alarm hysteresis: 1 °C [1.8 °F]) within the limits < +1.5 °C [34.7 °F] (under temperature) and >
+8.5 °C [47.3 °F] (over temperature). See also chapter 18, Figure 12.
Figure 6 Electrical sockets alarm contact
Caution
Use only copper cables.

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Use the following procedure to connect the mains line and the signal lines:
1. Loosen the screws (7 pieces) of the cooler top and remove the cooler top.
2. Pull the cable through the two cable glands with a clamping range of 6-12 mm in the bottom of the cooler.
3. Connect the mains cable (3 x 1 mm²/AWG 17) to X1 according to the wiring diagram. The tightening torque
for terminal X1 is 0.5 to 0.6 Nm.
4. Connect the status alarm cable (0.75 mm²/AWG 20) to terminal X3, number of cores 2 to 6, depending on
the required contacts (two changeover contacts are available). The tightening torque for terminal X3 is 0.5
to 0.6 Nm.
5. Assemble the housing parts in reverse order.
15 PREPARATIONS FOR COMMISSIONING
Before initial startup, all plant- and process-specific safety measures must be observed. It is mandatory for the
operator to complete the enclosed risk assessment of the product.
The gas exposure risk must be assessed by the operator with regard to the hazards posed by process and calibration
gas and the setup at the installation site (e.g. tubing, system cabinet/container/plant). If the risk assessment reveals
increased exposure hazards, further measures are required.
A visible label must be attached to the installation site in accordance with the risk assessment provided by the
operator.
16 START-UP
The thermo-hydraulic controlled cooling system of the ECM permits 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].
Note
Before starting up the gas cooler, it must be placed in its operating position for at least
two hours. The liquid inside the system may have been redistributed, and this could
cause problems in operating.
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, 120 V or 240 V, as shown on the type plate.
•Lead the status contact for status alarm to the measuring station;
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!

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17 CLOSING DOWN
Note
The location for the cooler must remain frost-free, even when the unit has been
switched off!
If the cooler unit is putting out of action for a short time no particular measures need
to be taken.
We recommend sweeping the cooler with inert gas or ambient air while the unit is
putting out of action for a longer time.
Caution
Aggressive condensate is possible.
Wear protective glasses and proper protective clothing!

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18 MAINTENANCE
The safety instructions specific to the plant and process are to be consulted prior to any maintenance work!
Danger
Dangerous voltage!
It is necessary to take the gas cooler off the mains before any assembly, maintenance
and repair work is carried out!
The ECM cooler does not require any special maintenance intervals. The cooler is to be cleaned with compressed
air according to the contamination level of the ambient air.
18.1 ADDING AND REPLACING THE HEAT EXCHANGERS
Removal of the heat exchangers may be necessary to carry out maintenance or repair work.
We recommend the following procedures and in this order for replacement of the heat exchangers:
1. Release the upper gas connections and lower condensate connections;
2. Pull the heat exchangers upwards with rotation out of the cooling block;
Replace the heat exchangers as follows:
1. Dry and clean the push-in opening in the aluminium cooling block with a cloth;
2. Smear the push-in opening with a thin and equal layer of thermal conductivity paste (part no. 90K0115);
3. Smear the heat exchangers with a thin and equal layer over the whole surface with thermal conductivity
paste (part no. 90K0115) to ensure good conduction of heat. It is best to close off the condensate removal
of the heat exchangers tube with adhesive tape to prevent any of the thermal conductivity paste from
getting into the heat exchanger;
4. Lightly push the heat exchangers with rotation back into the push-in opening of the cooling block and
press to the upper block;
5. Remove the adhesive tape and any surplus thermal conductivity paste;
6. Reconnect the hoses.
Note
Do not mix up the hose connections; gas outlet and gas inlet are marked with arrows!
Mounting the Borosilicate glass heat exchangers please notice:
1. Check the PTFE/Silicon locking rings for damage. In assembly, the locking rings must have the PTFE side
facing the medium, otherwise the required degree of sealing cannot be guaranteed!
2. Hand-tighten the GL union nuts by turning them clockwise;
To ensure a safe connection of the sample gas respectively condensate tubes to the Borosilicate glass heat
exchanger(s) we recommend the use of GL-couplings.
Please feel free to contact us, if you need any help choosing the right connectors or couplings.