M&C EC Series User manual

Electric gas cooler series EC
®
EC/ECS (from model nos.: 95...)
Instruction Manual
Version 1.01.01

2 EC/ECS | 1.01.01 www.mc-techgroup.com
Dearcustomer,
Thank you for buying our product. In this manual you will find all necessary information about this M&C product.
Theinformation in themanual isfastand easytofind, soyoucan start using your M&Cproductright after youhave
read the manual.
If you have any question regarding the product or the application, please don’t hesitate to contact M&C or your
M&C authorized distributor. You will find all the addresses in the appendix of this instruction manual.
For additional information about our products, please go to M&C’s website www.mc-techgroup.com. There you
can find the data sheets and manuals of our products in German and English.
This Operating Manual does not claim completeness and may be subject to
technical modifications.
© 11/2021M&CTechGroup
GermanyGmbH. Reproduction ofthisdocument or
its content is not allowed without permission fromM&C.
EC®is a registered trade mark.
Version: 1.01.01

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Listof Contents
1Generalinformation....................................................................................................................5
2Declaration of conformity ...........................................................................................................5
3Safety instructions......................................................................................................................6
4Warranty ....................................................................................................................................6
5Usedterms andsignalindications...............................................................................................7
6Introduction...............................................................................................................................9
7Application.................................................................................................................................9
8Technicaldata ..........................................................................................................................10
9Description...............................................................................................................................11
10 Function...................................................................................................................................13
11 Receptionandstorage..............................................................................................................14
12 Installationinstructions ............................................................................................................14
13 Supplyconnections ..................................................................................................................15
13.1 Hose connections..............................................................................................................15
13.2 Electrical connections.........................................................................................................16
14 Start-up....................................................................................................................................18
14.1 Function sequence and LED function display.........................................................................19
15 Closingdown............................................................................................................................20
16 Maintenance.............................................................................................................................20
16.1 Change of filter element at option EC-F or EC-FD ...................................................................20
16.2 Adding and replacing the heat exchangers ...........................................................................21
16.3 Maintenance of the optional mounted peristaltic pump(s), typeSR25.......................................22
16.3.1 Mounting instructions for SR25.2 peristaltic pump (optional).............................................22
16.3.2 Change of the pump tube............................................................................................23
16.3.3 Change of contact pulleys and springs...........................................................................24
16.3.4 Cleaning the pump head..............................................................................................24
17 Troubleshooting......................................................................................................................25
18 ECautomatic controlboard.......................................................................................................27
18.1 Connecting the cooling compressor.....................................................................................28
18.2 Temperature setting for the EC/ECS cooler............................................................................29
18.3 Connection of an external temperature reading with option second PT100 sensor (Part-No.:
02K9500) ..........................................................................................................................29
19 Checkingthe temperaturesensor..............................................................................................30
20 Changingthecooler aggregate.................................................................................................31
21 Retrofittinga digitaltemperatureindicator...............................................................................33
21.1 Technical data: ditigal temperature indicator.........................................................................33
21.2 Installation instructions: digital temperature indicator.............................................................33
21.3 Electrical connections: digital temperature indicator...............................................................34
22 Proper disposalof thedevice ....................................................................................................34
23 Spareparts list..........................................................................................................................35
24 Appendix..................................................................................................................................37

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Listof Illustrations
Figure 1 Example of application of EC/ECS...................................................................................................................................................9
Figure 2 EC/ECS with options EC-F and EC-FD........................................................................................................................................11
Figure 3 Peristaltic pump SR25.2 mounted into the front panel..................................................................................................12
Figure 4 Schematic diagram of functioning of heat exchanger...................................................................................................13
Figure 5 Electrical sockets......................................................................................................................................................................................17
Figure 6 Pin configuration from model nos. 96.......................................................................................................................................17
Figure 7 Pin configuration for EC/ECS up to model nos. 95............................................................................................................18
Figure 8 SR25.2: Mounting distance between front panel and pump motor......................................................................22
Figure 9 Change of the pump tube................................................................................................................................................................23
Figure 10 EC automatic control board.............................................................................................................................................................27
Figure 11 Connection diagram for compressor.........................................................................................................................................28
Figure 12 Voltage in relation to the temperature of the cooling stage.......................................................................................30
Figure 13 Resistance-temperature characteristics of the PT100 temperature sensor........................................................30
Figure 14 EC cooler aggregate..............................................................................................................................................................................31
Figure 15 Locating distance of digital temperature indication........................................................................................................33
Figure 16 Sample outletdew point...................................................................................................................................................................38
Figure 17 Circuit diagram EC automatic control board (drawing-No.: 2300-5.04.2)............................................................39
Figure 18 Wiring plan automatic condensate removal unit EC-FD (drawing-No.: 2300-5.05.0)...................................40

www.mc-techgroup.com EC/ECS | 1.01.01 5
Head Office
M&CTechGroup Germany GmbH wRehhecke 79w40885Ratingen wGermany
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 packedto be shippedsafely. To ensure thesafe operation and tomaintain thesafe 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’thesitate to contact M&C or your M&C authorized distributor.
2DECLARATIONOF CONFORMITY
CE - Certification
The product described in this operating manual complies with the following EU directives:
EMV-Instruction
The requirements of the EU directive2014/30/EU “Electromagnetic compatibility“are met.
LowVoltageDirective
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.
Declarationof conformity
The EU Declaration of conformity can be downloaded from theM&C homepage or directly requested from M&C.

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3SAFETYINSTRUCTIONS
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 beheeded.
Any work on electrical equipment is only to be carried out bytrained 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 1000V, together with the associated standards and stipulations.
Check the details on the type plate toensure 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 or moisture.
The device must not be used in hazardous areas.
Installation, maintenance, monitoring and any repairs may only be done by authorized personnel with respect to
the relevant stipulations.
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
productsand doesnot cover theconsumable parts.Please find thecomplete warrantyconditionsin ourterms and
conditions.
Thewarrantyincludes afree-of-charge repair in our production facility or thefree replacement of thedevice. 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 chargesto the point of use.

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5USED TERMS AND SIGNAL INDICATIONS
DANGER!
This means that death, severe physical injuries and/or important material
damages willoccur in case the respective safety measures are not fulfilled.
WARNING!
This means that death, severe physical injuries and/or important material
damages may occur in case the respective safety measures are not fulfilled.
CAUTION!
This means that minor physical injuries may occur in case the respective
safety measures are not fulfilled.
CAUTION!
Without the warning triangle means that a material damage may occur in
case the respective safety measures are not met.
ATTENTION!
This means that an unintentional situation or an unintentional status may
occur in case therespective note is not respected.
NOTE!
These are important information about the product or parts of the operating
manual which require user’s attention.
QUALIFIED PERSONNEL These are persons with necessary qualification who are familiar with
installation, use and maintenance of the product.
High voltages!
Protect yourself and others against damages which might be caused by
high voltages.
Corrosive!
These substances destroy living tissue and equipment upon contact.
Do not breathe vapors; avoid contact with skin and eyes.
Wear protective gloves!
Working with chemicals, sharp objects or extremely high temperatures
requires wearing protective gloves.

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Wear safety glasses!
Protect your eyes while working with chemicals or sharp objects. Wear
safety glasses toavoid getting something in your eyes.
Wear protectiveclothes!
Working with chemicals, sharp objects or extremely high temperatures
requires wearing protectiveclothes.

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6INTRODUCTION
The patented M&C EC/ECS gas cooler unit is always to be installed in situations where there is interference from
moisture in the gas to be measured.
Reduction of the gas temperature inside the cooler to a stable and very low dew point effects a condensing-out
of the sample gas.
7APPLICATION
Figure 1 shows a typical example of an application for installation of anEC/ECS gas cooler unit.
‰
Š
•
‚
ƒ
Sample gas
in
+5°C
(41 °F)
EC
…
‡
ˆ
†
„
Collecting vessel
Check-
gas in
• Filter sample probe SP... „ 3-way ball valve ‡ Super-fine filter FP...
‚ Heated sample line … Peristaltic pump ˆ Aerosol filter CLF
ƒ EC/ECScooler † Membrane pump ‰ Flow meter FM 10
Š Analyzer
Figure1 Example of application ofEC/ECS
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 EC/ECS ƒto a dew point of +5°C (41 °F). The emerging condensate is
removed by a peristaltic pump or a collecting vessel …. 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
liquidalarm sensor.If requiredan aerosolfilterˆcan be installedin front ofthe flowmeter‰.The gasthustreated
can now be passed into the analyzer Š. Forcalibration of the analyzer a ball valve „is existing.

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8TECHNICAL DATA
Sampleoutlet dewpoint Range of adjustment: +2 °C [35.6 °F]..... +7 °C [44.6 °F], factory setting:
+5 °C [41 °F]
Dewpointstability
A
t constant conditions
±
0
.
25 °C
[
±0.45 °F
]
Sampleinlet temperature
**Max. + 180 °C [356°F]
Sampleinlet dewpoint
**Max. +80 °C [176°F]
Gasflowrate per heatexchanger
**Max. 250 l/h
Numberof heatexchangers
1*,installation of max. 4 heat exchangers possible
Materialof heatexchangers
Duran glass or PVDF or stainless steel 316
Ambienttemperature **+5 to+45 °C [41 to 113 °F]
with option EC-F and EC-FD: +5 to +50°C [41 to 122 °F]
Storage
temperature
-20 to +60°C [-4 to 140 °F]
Admissiblegas pressure With glass and PVDF: max. 3 bar
With stainless steel : 10 bar*
With option EC-FD : 1.2 bar
Totalcooling power
Max. 520 kJ/h at +25°C [77 °F]
Deadvolume per heat
exchanger
70 ml
∆
P
per
heatexchanger at300l/h
1 mbar
Sample gasconnection glass:
PVDF:
stainlesssteel:
For tube∅6 mm*,
option: 8 mm, 10 mm or hose connector
G 1/4“i,
option: hose connector
G 1/4“i*,
option: NPT or hose connector
Condensateconnection glass:
PVDF:
stainlesssteel:
For tube
∅
12 mm*,
option: 8 mm, 10 mm or hose connector
G 3/8“i,
option: hose connector
G 3/8“i*,
option: NPT or hose connector
Readyfor operation
< 30 minutes
Powerconsumption
280VA, start up current at 230 V = 7.9 A
Mainspower supply
230V 50 Hz +/-10 % *, or: 115 V 60Hz +/-10 %
Electricalconnections
Terminal 2.5 mm²
Statusalarm
2 changeover contacts,max. 250 V 2A AC/DC 500 VA, 50 W
Caseprotection
IP20 (EN 60529)
Case
colo
r
RAL 9003
Method of mounting
19“rack or wall mounting
Case dimensions EC : 19“x 7 U x 450 mm [≈ 17.72”], 32 kg [≈ (70.55 lbs]
ECS:
19“
x 7
U
x 360
mm
[
≈
14.17”
]
, 31 kg
[
≈
68.34 lbs
]
Refrigerant 230 V: R134A 100 % CFC free
115V: R404A 100 % CFC free
Electricalequipmentstandard
EN 61010
* standard
** Maximum valuesin technicaldatasmust be ratedin considerationof total coolingcapacityat25 °C[77°F]
ambient temperatureandan outletdewpoint of5 °C[41°F].

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9DESCRIPTION
Figure 2 shows the EC/ECScooler unit with the optional universal units EC-Fand EC-FD.
EC-FD
Universal unit
Kondensat Aus
Condensate out
°C>
ON
°C<
View A
A
235
310
ECS 360
435
133
45
57
2 X cable glands
PG 13,5
max. 4 X condensate out
1
2
6
8
9
10
12 13
4
7
3
37,5
6,2
Option: EC-F
Option: EC-FD
EC/ECS
355
443
* necessary locating distance
24070
85
88 * 2HE
100 *
100 * 3 HE
1 HE
7 HE
465
84 TE
SR 25
SR 25
SR 25
SR 25
EC 450
5
Figure2 EC/ECS with options EC-Fand EC-FD
(18.31“)
(1.48“)
(9.25“)
(17.13“)
(9.45“)
(2.76“)
(0.24“)
(17.72“)
(3.35“)
(12.2“)
(13.98“)
(17.44“)
(14.17“)
(3.94“)*
(3.94“)*
(3.46“)*
(1.77“)*
(2.24“)* (5.24“)*

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The EC/ECS•is equally suitable for wall installation or mounting in a 19“-rack.
The versions differ in the positioning of the LED function display ‚. While for wall installation the LED function
display ‚can be fitted into the corresponding cut-outs in the EC/ECS front panel, for 19”rack mounting this is
doneusing thecut-outsin the back panel ofthehousing.This positioning can bedone atthe factorywhen stating
the type of installation of the EC/ECS gas cooler. It is relatively simple to subsequently reconfigure it on site at the
user location. The location for installation ofthe LED function display ‚will be marked correspondingly.
The housing depth of the EC-..cooler is 450mm [≈ 17.72”] . The ECS cooler unit differs in its lesshousing depthof
360mm [≈ 14.17”] and thereby is appropriate for mounting in a gas analysis cabinet with swing frame.
On the upper side of the cooler housing you will see the cut-outs…for maximum 4 heat exchangers. Sample gas
enters and leaves the heat exchangers by the correspondingly connections on the upper part of the heat
exchangers.
At the rear part of thehousing the condenser „to remove heat given off in the compressor can be seen.
The EC automatic control board is located in the plastic housing ƒbehind the removable front panel of the
EC/ECShousing.
On the underside of the housing the following connections are provided as standard:
†Standard condensate outlets from the heat exchangers respectively,
‡Cable glands PG 13,5;
As standard, the condensate is removed externally with collecting vessels, peristaltic pumpsSR25.1 or SR25.2, or
by “over-pressure operation”, with automatic drawing-off of condensate, as e.g. typeAD-... .
The heat energy from the cooling system is drawnoff by a forced-ventilation „. The required fans ‰and large air
suction filter elements are provided as standard in This is arranged below the EC/ECS housing and is absolutely
essential for operation of the cooler unit.
Optionally, theautomatic condensateremoval unitEC-FD(10)with maximum 4peristaltic pumpsSR25.1(13)can
by mounted by factory below the housing of the EC/ECS cooler. The fans ‰and large air suction filter elements
guarantee the above-mentioned condenser forced ventilation and make operation at higher ambient
temperatures up to +50 °C [122 °F] possible. The connection for the common condensate outlet (12) is located in
the front panel of the EC-FDunit.
If no forced ventilation for the condenser is required, peristaltic pumps type SR25.2 can be build into the front
plate of the cooler (Part No.01P9140).
Figure3 Peristaltic pump SR25.2mounted intothe frontpanel
Instead of the unit EC-FD the universal unit EC-F ˆoptionally can be used for operation at higher ambient
temperatures up to +50 °C [122°F] without automatic condensate removal. The unit is mounted by factory below
the housing of the EC/ECS cooler and contains as well the above mentioned fans ‰with large air suction filter
elements.

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10 FUNCTION
TheM&C EC/ECSgas cooler isa compressor cooler withstatus alarm capability. This ensuresa reliable continuous
operation of the cooler.
Up to 4 Jet-stream heat exchangers made of Duran 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..
+5°C
Sample gas
out Sample gas
in
Condensate out
Cooling-
block
Figure4 Schematic diagram of functioningof heatexchanger
Thecompressorcooler systemhasaheat-insulatedcoolingblockataconstant temperatureof+5°C [41°F].Control
of the compressor for models as from serial numbers 95... is done contactless by the EC automatic control
electronics and is therefore not subject to wear.
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.
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]) .
[41 °F]

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11 RECEPTIONANDSTORAGE
The EC/ECSgas cooler is a complete pre-installed unit.
•Carefully inspect the EC/ECS 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!
•Checktheitemsforanydamagein transitand,ifrequired,inform theshippinginsurancecompanyimmediately
of the damage found!
NOTE!
Thecooler mustbestored ina 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
mistake, it must stood in the operating position for approx. 24 hours before it is
switched on!
12 INSTALLATION INSTRUCTIONS
The EC/ECScooler is equally suitable for wall mounting or for installation in a 19" rack.
NOTE!
Please state the desired type of mounting when ordering so that the LED function
display can be positionedto matchat the factory!
NOTE!
The operating position for this cooler is exclusively vertical. This is the only way to
ensureproper separation andremoval ofcondensate inthe heatexchangers.During
transport andinstallation,thecoolermustalwaysbe stoodupwith thetransportfeet
positionedunderneath sothat theoil intheclosedcompressor circuitcannotrun out
ofthe compressorcase.
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.
Theminimuminstallation dimensions(fig.2)mustbe followed withoutfail.Iftheunit
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 gassamplelines mustbe providedwith slope upto thecooler. Inthatcase
pre-separationof thecondensate isnot required.
Connectthe heatedsamplelinewithsufficient thermaldecouplingtothecooler!

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13 SUPPLY CONNECTIONS
13.1 HOSE CONNECTIONS
WARNING!
Aggressive condensateispossible.
Wear protective glasses and properprotective clothing!
The gas inlet and outlet connections are at the upper part of the heat exchanger. For possible connectors see
technical data (see chapter 8).
Corresponding tube or hose connectors areavailable optional at M&C.
NOTE!
Do not mix up the hose connections; the inlet and outlet connections of the heat
exchangers aremarked witharrows;
Ensurethat theconnectionsaresealedadequately;
To ensure free removal of the condensate, ensure that the listed diameters for the
condensate removallines arenot reduced!
Ensure that the connections are sealed adequately by noting the following:
Duran glassheat exchangers withconnectionsGL18-6respectivelyGL25-12
•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 themedium.
PVDFrespectively stainlesssteelheatexchangerswithG1/4“irespectively G3/8“i
•The corresponding tube respectively hose couplings with threaded connections have to be screwed in with
PTFE thread sealing tape.
•Togrant a functional and unproblematic mounting werecommend touseunion pieceswith taper pipe thread
type Raccording to DIN 2999/1 in connection with suitable sealing tape.
NOTE!
When fixingthe connectorsin thePVDF heatexchangerhold upwith awrenchat the
paneof thebolthead!
Option:stainless steelheatexchangerwithNPT
•The heat exchangers with NPT threaded connectors are marked with circulated notches.
•To ensure the tightness of the connections, the NPT connection threads are inserted or glued in place with
sealing paste.

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In the standardconfiguration, the tubes forremoval of condensate are connected directlyto the heat exchangers.
Theseprotrude with the GL25-12 tube connectors* (Duran glassheat exchanger)respectively with G3/8“* thread
joint (PVDF or stainless steel heat exchanger) above the base plate of the cooler housing (Fig.2).
Condensate removal is done by customer according tothe type of operation with:
-Automatic float-type condensate traps AD-... only for over-pressure operation;
NOTE!
Stainless steel heat exchangers with G 3/8“thread joint can be directly fitted up with
the float-type condensate trap AD-SS by means of a thread adapter part number FF
11000 (1/2“NPT to G 3/8“i). By this wallmounting of theAD-SSunit isn’t necessary!
-Condensate collector container that is emptied manually;
-peristaltic pump.
Option:automatic condensateremovalwithperistalticpump SR25.1resp. SR25.2
In case of peristaltic pumps type SR25.2, build in the front plate, the condensate outlet 4/6 mm hose is provided
directly at the corresponding pump.
The Universal unit EC-FD with peristaltic pumps SR25.1 is equipped with a condensate outlet for 4/6mm hose
connection on the front panel (see fig. 2).
13.2 ELECTRICAL CONNECTIONS
WARNING!
When connectingthe equipment, pleaseensure thatthe supplyvoltage is
identicalwith theinformationprovided onthe model 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
1000V, togetherwith theassociatedstandardsand stipulations.
Check the details on the type plate to ensure that the equipment is
connected upto thecorrect mains voltage.
The main circuit must be equipped with a fuse of 10 A
T
(over current
protection);forelectricaldetailssee technicaldata.

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Figure 5 shows the electrical connections at the plastic housing behind the front panel of theEC/ECS housing.
Power supply : 230V/50Hz or 115V/60Hz (see type plate)
Status alarm : two potential free changeover contacts
Contact rating : 250V AC, 2A, 500VA or
250V DC, 2A, 50W
Supply
main
18
19
20
L
N
PE
EC automatic
control electronics
27 28 30 31 3229
NCMC NONC MCNO
Status alarm
to PG 13,5 to PG 13,5
ECS
EC
Clamp connection X0 (from model nos. 96...)
Figure5 Electrical sockets
For location of clamp X0 see Fig.6 .
Figure6 Pin configuration frommodelnos.96...
Two PG 13.5 cable glands are provided for the cable bushings throughthe base plate of the cooler housing.
Before model nos.96... the pin configuration for power and alarm connection was as follows:
12345678910
NC MC NO NC MC NOPENL
X0
Power connection to
EC electronics Alarm connection to
EC electronics
Power In
by customer Alarm connection by
customer

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The power connector is on the front panel of the EC automatic control board. This is within the plastic housing,
behind the removable front panel of the cooler unit. The pin arrangement of the power connector is as shown
below:
Thepotential-free contactsofthe statuscollectoralarm are locatedas wellon theECautomatic controlboard (Fig.
5), pins 27 to32. Further details are given in the pin configuration in Figure 7.
Netz ein
1
2
3
4
schwarz
schwarz
23
20
L PE
M
51
50
49
N
48
27
29
28
30
31
32
15
13
14
16
17
19
22
44
45
46
EC-Sensor
Regelelektronik EC/ECS
Kompressor
Power in
Compressor
Universaleinheit EC-FD s. Anhang
Universal unit EC-FD see appendix
EC/ECS Automatic
NO
MC
NC
NO
NC
MC
18
21
24
40
41
42
43
47
1
2
3
1
3
2
230V
oder/or
115V
PT 100
~
M
~
M
L
N
PE
Universaleinheit
EC-F
Universal unit
<
<
Control electronics
black
black
s. Kapitel 13.1
see chapter 13.1
The 115V aggregate is forced
ventilated by connecting the
fan (90 K 0042a) to terminals
41, 45 respectively 49 or using
optional the universal units
EC-F/FD.
Figure7 Pin configuration forEC/ECSup to modelnos.95...
14 START-UP
The automatic control electronics of the EC/ECS permit automatic start-up of the cooler. The error diagnostics
guarantee full monitoring andreporting of possible sources of error.
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 i its operating position for at
leasttwohours.Theliquidinsidethesystemmayhavebeen redistributed,andthis
couldcause problemsinoperating!
Terminal
18
19
20
ECautomatic controlboard
Connection
L
N
PE

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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 230V, as shown on the typeplate!
•Lead the status contacts for reporting of under- and over-temperature 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
cuttingoff thegassupplyinthe eventof errormessages fromthe cooler!
14.1 FUNCTION SEQUENCEAND LEDFUNCTION DISPLAY
Three function display LEDs are provided to give a visualization of the function sequence during start-up of the
cooler. According to the type of installation, they are located either on the front panel or the back panel of the
cooler (Fig. 2). The top LED (red) indicates that the temperature set by the EC automatic control electronics has
been exceeded or has not been reached. The two-colour (pink/green) LED in the middle shows that the cooler
compressor is operating. The bottom red function display LED gives an alarm if the temperature falls too low.
Switchingthe cooleron
As soon as there is a mains voltage, the top red LED lights up. This indicates that
the temperature of the cooler is above +8 °C [46.4 °F]. The two-coloured LED in
the middle lights up as pink once the cooler compressor is in operation.
Normaloperation
After around 30 minutes the cooler has been cooled down to a temperature
below +8 °C [46.4 °F]. The top red LED goes out.
The status collector alarm contacts are deactivated and control the automatic
external release for gas measurement.
The cooler compressor is switched of as soon as the cooler stage reaches the
controlled temperature of +5 °C [41°F]. The middle LED lights up as green.
The cooler compressor will be alternately switched on and off by the EC automatic control electronics in a load-
dependent cycle. The middle LED will alternately light upas pink and green (normal operating functions).
°C >
ON
°C <
red
pink
green
°C >
ON
°C <
pink
green

20 EC/ECS | 1.01.01 www.mc-techgroup.com
15 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 recommended sweeping the cooler with inert gas or ambient air while the unit is putting out of action for a
longer time.
WARNING!
Aggressive condensateispossible.
Wearprotective glasses andproper protectiveclothing!
16 MAINTENANCE
The safety instructions specific to the plant and process are to be consulted prior to any maintenance work!
WARNING!
It is necessary to take the ECP electric gas cooler off the mains before any
assembly, maintenance orrepair workis carriedout!
The EC/ECScooler unit does not require any special maintenance intervals.
Depending on the degree of contamination of the ambient air, the cooling fins need to be cleaned periodically
with compressed air.
16.1 CHANGE OF FILTER ELEMENTATOPTION EC-F OR EC-FD
The air suction filter units in the EC- F/EC-FD universal unit are to be cleaned or replaced according to the
contamination level of the ambient air. They are located in a plug-in box underneath the cooler unit. The filter
elements are removed as follows:
•Unclamp the plug-in box byturning the quick-lock screw plug 90° to theleft;