M&C EC-30C Instruction Manual
EC®
Ultra Low Gas Cooler
EC-30C
Instruction Manual
Version 1.00.02
Software Version 1.00
Get help
For more information about using your M&C product, please contact
M&C TechGroup. We will answer your questions about commissioning,
handling and technical service. With our experience and know-how, we
will get your M&C product running in no time - and with no charge.
Please contact our service center in Ratingen, Germany,
for US Service Ventura, California
For faster service, please have this information ready when you contact
us:
Product model
Product serial number
M&C order or invoice number
Germany service center:
+49 2102 935 - 888
service-DE@mc-techgroup.com
US service:
+1 805-654-6970
info-usa@mc-techgroup.com
For online service and support information go to:
www.mc-techgroup.com
EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com 1
Table of Contents
1 About this instruction manual 6
2 Important safety information 7
2.1 Intended use 7
2.2 Personal safety 7
2.3 Warning signs and definitions 7
2.4 Safety instructions 8
2.5 Working on electrical and electronic devices 9
2.6 Not certified in hazardous areas 9
3 Introduction 10
4 Product overview 11
4.1 Application 11
4.2 Principle 12
5 Technical Data 14
5.1 Max. possible water vapor dew point input [°C] / [°F] 15
5.2 Dimensions 16
6 Receiving the EC-30C 17
6.1 Product label and serial number 17
7 Using the EC-30C 18
7.1 Graphical user interface (GUI) 18
7.2 LED color coding and possible color combinations 18
7.3 Self-monitoring after powering-on the unit 19
7.4 Self-monitoring during operation 20
7.4.1 Power consumption readjustment 20
7.4.2 Pre-warning messages 20
7.5 Display during start-up of the EC-30C 21
7.6 Overview screen 23
7.7 Alarm and warning history 24
7.7.1 Error codes 27
7.7.2 Warning symbols 27
7.7.3 Alarm symbols 29
7.8 Temperature diagrams 32
7.8.1 Diagram of the pre-cooler unit (PCU) 32
7.8.2 Diagram of the deep cooling units (DCU 1 and DCU 2) 33
7.9 Parameter menu 34
7.9.1 Parameter settings 36
7.10 Device information 37
7.11 Service-Reset (qualified personnel only) 39
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8 Installation instructions and mounting of the EC-30C 40
8.1 Installation instructions 40
8.2 Wall and rack mount 41
8.3 Mounting instructions for SR25.2 peristaltic pump (optional) 43
8.4 Tubing without heat exchanger purging (standard tubing) 44
8.4.1 Heat exchanger connections for tubing without purging 44
8.5 Tubing with heat exchanger purging for special requirements (optional) 46
8.5.1 Heat exchanger connections for tubing with purging 47
8.6 Duran-glass heat exchanger with GL-connections 48
8.7 PVDF- heat exchanger with PVDF-tube connectors 48
8.8 Electrical connections 49
8.8.1 mA-output 51
8.8.2 Liquid alarm sensor LA (optional) 51
8.8.3 Gas flow sensor FA 20 and gas flow meter FM 40 (optional) 52
9 Start-up 53
9.1 Preparation for start-up 53
9.2 Temperature chart of the start-up stages 54
10 Maintenance 58
10.1 Maintenance of the peristaltic pump type SR25.2 (optional) 58
10.1.1 Changing the pump tubing 59
10.1.2 Changing the contact pulley and springs 60
10.1.3 Cleaning the pump head 60
10.2 Changing the heat exchanger 61
10.3 Changing the 0-20 V-Module 62
10.4 Changing the buffer battery 63
10.5 Checking the temperature sensors 64
10.6 Changing the compressor unit 65
11 Decommissioning 66
12 Appendix 67
12.1 Overview of the EC-30C screens 67
12.2 How to configure the mA-output 68
12.2.1 How to calculate temperature based on measured mA-value 68
12.2.2 How to calculate mA-value based on measured temperature 69
12.3 Spare parts and consumables 70
12.4 Additional Information 71
12.5 Declaration of conformity 71
12.6 Certificates 72
12.7 Warranty 72
12.8 Liability and disclaimer 72
12.9 Storage 73
12.10 Shipping and handling 73
12.11 Proper disposal of the device 73
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13 About us 74
13.1 M&C‘s group of companies 74
13.2 The quality-oriented M&C catalog 75
13.3 Technical consulting services 76
13.3.1 Ideas, suggestions and feedback 76
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Table of Illustrations
Fig. 1: Application example of the EC-30C 11
Fig. 2: Jet-Stream heat exchanger 12
Fig. 3: Front view: dimensions including optional peristaltic pumps 16
Fig. 4: Side view: dimensions including optional peristaltic pumps 16
Fig. 5: Graphic user interface 18
Fig. 6: Smiley symbols during self-test 19
Fig. 7: The smileys on the display after self-testing 19
Fig. 8: ‘Service‘-monitor: Self-test failed 20
Fig. 9: Start-up phase: first cooling phase 21
Fig. 10: Start-up phase: TKS reaches and/or exceeds ‘0 °C / 32 °F’-limit 22
Fig. 11: Start-up phase: Target temperature reached 22
Fig. 12: That’s how you reach the overview screen 23
Fig. 13: Overview screen 23
Fig. 14: How to reach the alarm and warning history 24
Fig. 15: Alarm and warning history 25
Fig. 16: How to chose an alarm or warning message 25
Fig. 17: How to scroll through stored messages 26
Fig. 18: Detailed information for a selected message 26
Fig. 19: How to reach the graphical temperature diagrams 32
Fig. 20: Temperature diagram of the pre-cooling unit 32
Fig. 21: Temperature diagram of the deep-cooling units 33
Fig. 22: How to reach the parameter menu (screen 1) 34
Fig. 23: Parameter menu, screen 1 34
Fig. 24: Parameter menu, screen 2 35
Fig. 25: How to reach the parameter settings 36
Fig. 26: How to reach the device information 37
Fig. 27: Device information 38
Fig. 28: Activating Service Reset (Qualified personnel only) 39
Fig. 29: Reset screen (Qualified personnel only) 39
Fig. 30: Min. assembly dimensions (unit with optional peristaltic pumps) 41
Fig. 31: Mounting rail for wall or rack mounting 42
Fig. 32: SR25.2: Mounting distance between pump motor and front panel 43
Fig. 33: Standard tubing: DCU 1 active, solenoid valve triggered, no FA 44
Fig. 34: Heat exchanger connectors (device with four optional peristaltic pumps) 45
Fig. 35: Tubing with purging: DCU 1 activ, solenoid valves triggered, no FA 46
Fig. 36: Heat exchanger connections, tubing with purging 47
Fig. 37: Electrical connections 50
Fig. 38: Temperature chart of the start-up stages 55
Fig. 39: Changing the pump tubing 59
Fig. 40: Resistor - temperature characteristic of the PT100 64
Fig. 41: Compressor: electrical connections 65
Fig. 42: Overview: screens 67
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1 About this instruction manual
Welcome to the M&C product manual. The goal of this document is to give a broad overview of the main functions of the EC-30C. It will help you to get started with using the
EC-3 0 C .
If you have any questions about this instruction manual, please contact M&C or one of our
official distributors.
Document: Instruction Manual EN for EC-30C
Version: 1.00.02
Software Version: 1.00
Release date: 10.2019
Copyright: © 2019 M&C TechGroup
Published by: M&C TechGroup Germany GmbH, Rehhecke 79
40885 Ratingen, Deutschland
This instruction manual does not claim to be complete and it may be subject to technical
modifications. We appreciate any feedback you may have to this document .
Any copy of this document or of its content is not allowed without explicit approval of
M&C.
With the release of this version all older manual versions will no longer be valid.
Registered trademarks
EC® is a registered trademark of M&C Techgroup Germany GmbH.
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2 Important safety information
Please read this important safety information carefully before installing the EC-30C. Follow
these safety precautions during commissioning, start-up and regular operation.
2.1 Intended use
This product is designed to be used as an ultra-low cooler to reduce the dew-point of
humid sample gas to provide a stable and very low dew point.
Do not use this product for any other purpose. Improper use and handling can create
hazards and cause damage. For more information, please refer to the safety information in
this instruction manual.
2.2 Personal safety
Please read this instruction 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 an M&C authorized distributor.
Please follow all instructions and warnings closely.
The product described in this instruction manual has been built and tested in our production facility. All ultra-low cooler 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 instruction manual includes all information regarding proper transportation, storage,
installation, operation and maintenance of this product by qualified personnel.
2.3 Warning signs and definitions
DANGER
WARNING
CAUTION
ATTENTION
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
ATTENTION is used to address practices not related to physical injury.
EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com 7
High
Voltage!
Caution, risk of electric shock!
High
Pressure!
Hot Surface! Caution, hot surface! Do not touch!
Hazardous
Gas!
Qualified
personnel
Safety
Gloves!
Pull Main
Plug!
Note
Caution, system might be under pressure.
Caution, hazardous and toxic gas! Do not inhale!
‘Qualified personnel’ are experts who are familiar with the installation,
mounting, commissioning and operation of these types of products.
Put on safety gloves for your protection.
Unplug power supply before opening!
‘Note’ indicates important information relating to the product or
highlights parts of the documentation for special attention.
Do you need
help?
Please contact M&C!
2.4 Safety instructions
Please follow these safety directions and instructions regarding installation, commissioning and operation of the EC-30C.
Qualified
personnel
Install the device only in protected areas, sheltered from sun, rain and moisture.
Operate the device only in the permitted temperature and pressure ranges. See details on
page 14 chapter ‘5 Technical Data’ .
Don‘t repair or maintain this product without M&C‘s specific maintenance- and service
instructions.
Installation, commissioning, maintenance, inspections and any repairs
of all M&C products and components must be carried out by qualified personnel in compliance with the current regulations.
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When replacing parts, use only original M&C spare parts.
Pull Main
Plug!
If there is any indication that safe operation of the EC-30C is no
longer possible, turn off the power and disconnect the device from
the power supply immediately.
Then protect the defective device against accidental switch-on and mark it clearly as
defective.
2.5 Working on electrical and electronic devices
Only qualified and authorized personnel are permitted to work on equipment which operates on 115 or 230 VAC supply voltage. Please be sure to observe the generally accepted
engineering standards and all of your national and local regulations.
Note
High
Voltage!
Before connecting the device, please make sure that the supply
voltage matches the specified voltage on the product label.
Protect yourself and others against damages which might be caused
by high voltages. Disconnect the power supply before opening the
device for access. Make sure that all external power supplies are
disconnected.
Please make sure to take appropriate precautions even by working on unplugged or
low-voltage devices. Unplugged devices need to be properly grounded to prevent damage to internal electronics from electrostatic discharges (ESD).
2.6 Not certified in hazardous areas
This device is NOT certified to be installed or operated in hazardous areas.
Explosion hazard!
WARNING
For general purpose areas ONLY. Don’t use the EC-30C in hazardous
areas.
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3 Introduction
Congratulations on your purchase of the EC-30C ultra-low cooler. We know from experience that you surely will enjoy this reliable and durable M&C product.
M&C is one of the premium and performance-driven companies in the business. With this
in mind, our customers benefit from a number of significant advantages. We offer proven,
durable and advanced products and solutions. We have listened to our customers needs,
when designing our products, allowing M&C to provide premium products at a comparatively lower cost over the entire life cycle.
Our products and special systems are designed and tested in our own facilities by our
highly skilled staff that are always quality-oriented. We carefully package our goods and
send them to our customers worldwide.
With our 30-years of experience in customer specific solutions for almost 30 different industries and applications, it is our goal to supply you with an excellent product. Our products offer fast commissioning, safe and reliable day-to-day operation and low
maintenance.
We expect that our products fully meet your expectations. 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. Our service does not end with delivery of the products.
Thanks again for your purchase.
We appreciate your business.
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4 Product overview
4.1 Application
The M&C ultra-low cooler EC-30C is used in the gas analysis technique to reduce the dew
point of humid sample gases and to provide a stable and very low dew point. This eliminates condensate built-up and aerosol formation in the analyzer.
Due to the extremely stable and low gas dew point, there are no water vapor cross-sensitivity and volumetric errors.
Sample gas IN
Condensate OUT
Test gas IN
Fig. 1: Application example of the EC-30C
1 Gas sample probe SP2000-H 2 Electrically heated sample line 4M4/6
3 Ultra-low cooler EC-30C 4 3-way ball valve 3L/PV-1
5 Filter 6 Bellows pump MP-F
7 Aerosol filter CLF -5/W optional depend-
ing on application
8 Analyzer, e.g. PMA1000
9 Flow meter FM40, 25-250 Nl/h 10 Option: 4.peristaltic pump with solenoid valve
(heat exchanger purging)
11 O ption: three SR25.2 peristaltic pumps
(condensate removal)
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4.2 Principle
The M&C gas cooler EC-30C is a two stage combination of compressor and Peltier cooler.
The automatic defrost function of the dual deep freezer unit ensures 100 % availability
during operation.
The micro processor-controlled electronics of the EC-30C in combination with the graphical display, offers a high degree of functionality, convenience in use, and safe operation.
The EC-30C is built for 24/7 hours of operating time. The cooling capacity of 130 kJ/h is
constant, even under maximum allowed ambient temperature.
A capacity reserve compensates parts of the natural aging process and maximizes the
service life of the EC-30C.
The pre-cooler unit is equipped with a Jet-Stream heat exchanger. The heat exchanger is
cooled down to the constant temperature of +2 °C (35.6 °F) by a separate, microprocessor
controlled, compressor cooling unit.
Sample gas - OUT
M&C Jet-Stream
heat exchanger
Cooling block
Condensate - OUT
Sample gas - IN
Fig. 2: Jet-Stream heat exchanger
The Jet-Stream heat exchanger in the pre-cooler unit removes a large amount of condensate, this ensures a safe and reliable pre-drying of the sample gas. An additional external
vessel to separate the condensate is under normal conditions not necessary. The cooling
unit of the pre-cooler dissipates the heat of the Peltier elements.
The dual deep freezer unit is equipped with two modified Jet-Stream heat exchangers.
Two separate pairs of Peltier elements are cooling the heat exchangers down to a constant
temperature between -20 °C (~-4 °F) and -30 °C (~-22 °F). The factory setting is -30°C (~-22
°F).
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The EC-30C switches automatically every 3 hours between the two deep freezer units. The
deep freezer which is currently not in use, will be defrosted to prevent freezing of the heat
exchanger and clogging of the gas lines. Upon special request, this cycle of 3 hours can be
reduced directly at your facility by M&C personnel.
The new graphical user interface is icon-based for easy and intuitive navigation. The messages are displayed in form of easy-to-understand icons. Features like time stamps for the
alarm message history, periodically self-monitoring and pre-warning messages to inform
about upcoming maintenance work ensure a maximum degree of comfort, ease-of-use
and safety of operation of the EC-30C.
The smart periodically self-monitoring of the EC-30C, helps to plan upcoming maintenance and service work to prevent unnecessary down time.
A configurable mA-output is part of the EC-30C standard version.
Three optional peristaltic pumps SR-25.2 for automatic condensate removal can be installed into the unit.
An internal flow meter including an optical flow sensor can be installed into the unit as an
option. Another option would be an external flow meter including an optical flow sensor
or an external humidity sensor.
A fourth optional peristaltic pump can be installed in combination with a second solenoid
valve to provide permanently fresh test gas to the inactive cooling unit. This makes sure
that even in systems, where water vapor cross sensitivity exists, there are no visible peaks
at switching of the dual deep freezer unit. This also prevents short peaks in the sample gas
concentration due to stagnant gas.
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5 Technical Data
Series EC
Part No.: 02 K 6100 (a)*
Gas connection DN 4/6 tube connector
Condensate connections 3x tube connector GL25-12 mm
Material of sample contacting
parts
Single stream, gas flow rate 90 Nl/h – 250 Nl/h
Gas pressure max. 3 bar abs.
Ambient temperature +5 °C to +45 °C (+41 °F to +113 °F)
Storage temperature -20 °C to +60 °C (~-4 °F to +140 °F)
Sample outlet dew point -20 °C to -30 °C (default -30 °C) (~-4 °F to ~-22 °F, default
Sample inlet temperature max. 180 °C (+356 °F)
Water vapor dew point input max. 70 °C (+158 °F)
Cooling capacity max. 130 kJ/h** (at given input conditions)
Main power connection /
Power consumption
Start up time < 60 min
Dead space approx. 160 ml (5.41 fl. oz)
∆P at 250 Nl/h flow rate 5 mbar
Electrical connection 2.5 mm2 (0.0039 in2) terminals, cable glands PG (1 x 12
mA-output 0 - 20 mA / 4 - 20 mA, max. 500 Ohm load (including
Relay output alarm 1 changeover contact: 230 V AC 3 A, 24 V DC 3 A
Relay output warning 1 NO contact, 24 V (AC/DC), 0.5 A
Relay output freezer units I and II1 NO contact, 24 V (AC/DC), 0.5 A
Case protection IP20, EN 60529
Electrical equipment standard EN 61010
Method of mounting 19" rack or wall mount
Case color RAL 9003
Dimension (w x h x d) 84 HP x 8U (with connections) x 360 mm (14.17“)
Weight 39.34 kg (86.73 lbs)
©
Version EC-30C
Duran Glass, PTFE, PVDF
~-22 °F)
230 V, 50 Hz, 380 VA
or* Part-No. …-a=115 V, 60 Hz, 380 VA
mm, 2 x 16 mm, 2 x 20 mm)
cable resistance),
alarm: COM & NC closed
No alarm: COM & NO closed
warning: open
unit I on: closed
unit II on: open
* (a)Addition to the part number for EC-30C with 115 V
** For the given input conditions, please have a look at the table on page 15 chapter ‘5.1 Max.
possible water vapor dew point input [°C] / [°F]’ .
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Options
Part-No.: 01 P 9145 Peristaltic pump SR25.2, to mount into the EC-30C (See
spare parts for SR25.2 on page 70 chapter ‘12.3
Spare parts and consumables’ )
Part-No.: 03 F 3000 Aerosol-Filter CLF-5: External mounting in the outlet of
an ultra low gas cooler EC-30C when sample tends to
form aerosols.
Technical data see data sheet 7.7 Fluid particle filter
CLF-5
Part-No.: 02 K 9700 (a)* Heat-exchanger purging: 4. peristaltic pump with
solenoid valve
Part-No.: 03 E 1001 LA 1S humidity sensor, 4 m (13.12 ft) cable with cable
breakage detection
Part-No.: 03 E 3500 FA 20 (Flow sensor with 0.45 m [1.48 ft] cable)
Part-No.: 02 K 9710 FM 40 (Flow meter, 25-250 Nl/h)
* (a)Addition to the part number for EC-30C with 115 V
5.1 Max. possible water vapor dew point input [°C] / [°F]
This table shows the max. possible water vapor dew point input (°C) / (°F) depending on
the incoming gas temperature and the flow rate.
These values correspond to the maximum cooling capacity of 130 kJ/h. The maximum
possible water vapor dew point input (°C) / (°F) indicated must not be exceeded.
Incoming gas temperature in °C (°F)
Gas flow [l/h] 70
(158 °F)
90 70
(158 °F)
110 68
(154.4 ° F )
130 65
(149 °F)
150 62
(143.6 °F)
170 59
(138.2 °F)
190 57
(134.6 °F)
210 55
(131 ° F)
230 53
(127. 4 ° F)
250 52
(125.6 ° F)
90
(194 °F)
70
(158 °F)
67
(152. 6 °F)
64
(147.2 ° F )
61
(141. 8 °F)
58
(136.4 ° F )
56
(132. 8 ° F )
54
(129. 2 ° F )
52
(125.6 ° F)
50
(122 °F)
120
(248 °F)
69
(156.2 °F)
66
(150.8 ° F )
63
(145.4 °F)
59
(138.2 °F)
56
(132. 8 ° F )
54
(129. 2 ° F )
52
(125.6 ° F)
49
(120.2 °F)
47
(116.6 °F)
150
(302 °F)
68
(154.4 ° F )
65
(149 °F)
61
(141. 8 °F)
58
(136.4 ° F )
55
(131 ° F)
52
(125.6 ° F)
49
(120.2 °F)
47
(116.6 °F)
44
(111. 2 ° F)
180
(356 °F)
67
(152. 6 °F)
63
(145.4 °F)
59
(138.2 °F)
56
(132. 8 ° F )
53
(127. 4 ° F)
50
(122 °F)
46
(114 . 8 ° F)
43
(109.4 °F)
41
(105.8 °F)
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5.2 Dimensions
Dimensions in mm [Inch]
Fig. 3: Front view: dimensions including optional peristaltic pumps
Dimensions in mm [Inch]
Note
You will find mounting directions on page 40 chapter ‘8 Installation instructions and mounting of the EC-30C’ .
Fig. 4: Side view: dimensions including optional peristaltic pumps
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6 Receiving the EC-30C
Heavy device!
CAUTION
Note
The ultra-low cooler EC-30C is a complete pre-installed unit.
Please remove the cooler carefully from the packaging. Check the scope of the delivery
specified on the delivery note. Please make sure that you have received all items stated on
the delivery note.
Please check the unit for any transport damages after receipt and report any complaints to
the transport company immediately.
For transport reasons, the heat exchangers are not mounted inside of the cooler. They are
included in the packaging, but wrapped separately. Connect the heat exchangers properly before commissioning.
Risk of injury when handling heavy equipment.
Do not lift, move or carry the device without help. A second person is
required to lift, move or carry the device.
The cooler should always be transported and stored in an upright
position, with the equipment feet facing downwards to ensure that
the oil in the closed compressor circuit cannot run out of the compressor case.
If the device is transported on its back, it needs to be standing in an
upright position for at least 2 hours before turning on.
Follow the instructions to connect the tubing to the heat exchangers
Note
on page 40 chapter ‘8 Installation instructions and mounting of the
EC-3 0 C’
6.1 Product label and serial number
There are two product labels on the EC-30C. One of them is located on the right side of the
cooler and the second one is inside the cooler housing on the bottom plate. Please refer
to this serial number if you have any questions about the device or if you need to order
spare parts or consumables.
Note
The EC-30C features two serial numbers. One serial number is for the
device and the other one for the display controller.
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7 Using the EC-30C
PRG
ESC
7.1 Graphical user interface (GUI)
The EC-30C has a graphical, icon-based intuitive menu navigation. The graphic user interface includes three LED indicators, the display and the operating buttons. The figure below shows the screen, where the deep cooling unit has reached its target temperature of
-30 °C (~-22 °F), and describes the components of the user interface.
1 2 3
4
5
6
7
8
9
Fig. 5: Graphic user interface
1 Red LED (alarm message) 2 Yellow LED (warning message)
3 Green LED is on (OK) 4 Snow-flake-symbol with ‘1’ in its center (Tempera-
ture ≤ 0 °C and DCU 1 is active)
5 UP button (upwards pointing arrow) 6 PROGRAM button (PRG)
7 Temperature indication 8 DOWN button (downwards pointing arrow)
9 ESCAPE button (ESC)
Note
With the ESC button you will return to the start screen from any other
screen.
7.2 LED color coding and possible color combinations
Red Yellow Green Description
Everything is OK
One or more warning messages
One or more alarm messages
A combination of one or more alarm messages and
warning messages
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7.3 Self-monitoring after powering-on the unit
1
2
PRG
ESC
1 2 3
4 5 6
The EC-30C automatically monitors and controls its correct functioning and the wear out
of its components. The self-test includes six different tests, each of them being symbolized
by a smiley icon.
Fig. 6: Smiley symbols during self-test
1 ‘Test passed’-symbol 2 ‘Test failed’-symbol
Please switch on the EC-30C. After powering-on the unit starts the self-testing. After successful self-testing the display shows the following picture.
Fig. 7: The smileys on the display after self-testing
1 Internal low voltages 2 Power supply voltage
3 D/A converter 4 0-20 V-Module
5 Peltier elements 6 decoupling capacitor/ rectifier
If the self-test has succeeded, the unit enters the start-up phase and starts cooling.
If the display shows a ‘Test failed’-symbol, this means that an error has been detected
which prevents the correct operation of the unit.
In case of a failed self-test the display alternates between the monitor with smiley symbols
and the service monitor. These monitors will be shown on the display until the fault is
cleared.
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Please contact the M&C Service in case of self-test failures. The M&C Service will recom-
PRG
ESC
mend suitable measures to repair the unit.
Fig. 8: ‘Service‘-monitor: Self-test failed
In some cases it is helpful to switch off the unit and to switch it on
Note
again after approx. one hour.
If a ‘Test failed’-symbol is shown again after that, please contact the
M&C Service!
7.4 Self-monitoring during operation
Note During its regular operation the unit runs automatic self-tests.
7.4.1 Power consumption readjustment
Over time the signs of aging of the Peltier elements increase gradually the value of the
internal resistance. As a consequence the power necessary to keep the target temperature
constant can not be supplied anymore. The projected capacity reserve compensates this
unavoidable aging effect and maximizes the service life of the EC-30C.
7.4.2 Pre-warning messages
If the capacity reserve has been exhausted up to a critical value, the unit will show a warning message about the upcoming failure. An exact definition of the remaining time, until
the breakdown of the unit, is not possible.
Please plan servicing the unit ahead of time. The remaining service
Note
life of the unit after the failure warning can not be determined
exactly.
If the reserve capacity is exhausted, an alarm message will occur. The unit still keeps on
cooling, but the target temperature will not be reached any more. The longer the unit will
be kept in this modus, the less it will be able to cool. The possible cooling temperature will
constantly rise.
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If the operation process allows it, it is possible to set the target temperature a little bit
PRG
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2 3
higher, e.g. to -25 °C or -20 °C (~-13°F or ~-4°F). This will delay the alarm message until the
capacity reserve will be exhausted even for this higher target temperature.
7.5 Display during start-up of the EC-30C
The start screen will always show the temperature of the active
deep-cooling unit (DCU).
At the beginning of the start-up phase the temperature will decrease
Note
very slowly, given that the active DCU is cooled only via the passive
pre-cooler unit (PCU). After the PCU reaches +2°C (35.6 °F), the active
cooling phase of the DCU starts. From this point on, the temperature
will decrease considerably faster.
1
Fig. 9: Start-up phase: first cooling phase
1 ’Falling’ thermometer 2 Red LED is on (alarm)
3 Temperature of the active DCU
Directly after the successful self-test, the EC-30C will start cooling the pre-cooling unit
(PCU) to +2°C (35.6 °F) (target temperature of the pre-cooling unit). Depending on the
load, the compressor of the pre-cooling unit will switch between 12 to 120 times per hour,
in order to reach this target temperature.
The ‘falling’ thermometer is the symbol for this first cooling phase. At this point the initial
dew point of the sample gas is still higher than 0 °C (32 °F), which means that the target
temperature has not been reached yet, and the EC-30C is still in alarm modus.
Note
The red LED shows the status of the alarm relay. Operation mode of
the relay (safety first): alarm active = red LED
EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com 21
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1
2 3
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Fig. 10: Start-up phase: TKS reaches and/or exceeds ‘0 °C / 32 °F’-limit
1 Snowflake-symbol with a clock in its center 2 Red LED is on (alarm)
3 Temperature of the active DCU
As soon as the first DCU reaches the 0 °C (32 °F) temperature limit, the thermometer-symbol changes to a snowflake-symbol. The clock in its center stands for the start-up phase of
the active DCU. The EC-30C is still in alarm modus (red LED is on), because the DCU has not
reached its target temperature yet.
1
Fig. 11: Start-up phase: Target temperature reached
1 Snowflake-symbol with ‘1’ for DCU 1 2 Green LED is on (ready for operation)
3 Temperature of the active DCU (here DCU 1)
Note
The ‘1’ in the center of the snowflake stands for the active deep-cooling unit DCU 1.
22 EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com
As soon as the EC-30C reaches the target temperature of DCU 1, including the alarm hys-
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3 7
teresis of 5 °C (41 °F), it changes from alarm modus to OK modus. The red LED goes out and
the green LED turns on.
7.6 Overview screen
The overview screen shows detailed information about the pre-cooling unit PCU and the
two deep-cooling units DCU 1 and DCU 2. You can change from the start display to the
overview display by pressing the DOWN button.
Fig. 12: That’s how you reach the overview screen
The icons on the overview screen inform you about the current conditions of the three
cooling units.
4
5
6
Fig. 13: Overview screen
1 2
8
9
1 Column: target-temperatures 2 Column: current temperatures
3 DCU 1 temperature displayed on start screen 4 ‘M‘-symbol: PCU (not active)
5 DCU 1-symbol: cooling (active) 6 DCU 2-symbol: heating (active)
7 Smiley icon: PCU target temperature reached 8 Smiley icon: DCU 1 target temperature
reached
9 Clock icon: DCU 2 target temperature not
reached
EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com 23
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