Lauda MC 250 User manual

Microcool
MC 250, MC 350, MC 600, MC 1200
Operation manual
Circulation chillers
V7R6 Read this manual prior to performing any task!

Replaces issue V6R17/16, V5R8, V5R7, V5R5, V4R13, V4R6, V3R20, V3R19, V3R17
2/2/2022
Translation of the original operation manual
Manufacturer
LAUDA DR. R. WOBSER GMBH & CO. KG
Laudaplatz 1
97922 Lauda-Königshofen
Germany
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: https://www.lauda.de
Q4DT-E_13-001, 7, en_US ©LAUDA 2021
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Table of contents
1 Safety...................................................................................................................................................................................... 6
1.1 General safety instructions.......................................................................................................................................... 6
1.2 Intended Use.................................................................................................................................................................. 6
1.3 Foreseeable misuse........................................................................................................................................................ 7
1.4 EMC requirements........................................................................................................................................................ 7
1.5 Prohibition of modifications to the device.................................................................................................................. 7
1.6 Requirements for the heat transfer liquid.................................................................................................................. 8
1.7 Materials......................................................................................................................................................................... 8
1.8 Hose requirements........................................................................................................................................................ 8
1.9 Application area............................................................................................................................................................. 8
1.10 Personnel qualification.................................................................................................................................................. 8
1.11 Personal protective equipment.................................................................................................................................... 9
1.12 Structure of warnings.................................................................................................................................................... 9
2 Unpacking.............................................................................................................................................................................. 11
3 Device description................................................................................................................................................................ 12
3.1 Device types................................................................................................................................................................. 12
3.2 Structure of the circulation chiller............................................................................................................................. 12
3.3 Operating elements..................................................................................................................................................... 17
3.3.1 Mains switch............................................................................................................................................... 17
3.3.2 Display buttons.......................................................................................................................................... 17
3.4 Functional elements.................................................................................................................................................... 18
3.4.1 LEDs for function display........................................................................................................................ 18
3.4.2 Hydraulic circuit........................................................................................................................................ 18
3.4.3 Pressure gage............................................................................................................................................ 19
3.4.4 Level indication.......................................................................................................................................... 19
3.4.5 Cooling unit............................................................................................................................................... 19
3.4.6 Interfaces.................................................................................................................................................. 20
3.5 Rating label.................................................................................................................................................................... 21
4 Before starting up................................................................................................................................................................ 22
4.1 Install device................................................................................................................................................................. 22
4.2 External consuming unit............................................................................................................................................. 23
4.2.1 Hoses......................................................................................................................................................... 23
4.2.2 Connecting an external consuming unit............................................................................................... 24
5 Commissioning.................................................................................................................................................................... 26
5.1 LAUDA heat transfer liquids..................................................................................................................................... 26
5.2 Establishing a mains connection................................................................................................................................ 27
5.3 Switching on the device and filling with heat transfer liquid................................................................................... 27
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5.4 Setting the pump pressure......................................................................................................................................... 29
6 Operation.............................................................................................................................................................................. 31
6.1 Switching on the device............................................................................................................................................... 31
6.2 Basic display and menu items..................................................................................................................................... 31
6.3 Indications in the display............................................................................................................................................ 33
6.4 Setting the temperature set point............................................................................................................................ 33
6.5 Restricting the temperature limits............................................................................................................................ 34
6.6 Configuring the clock timer....................................................................................................................................... 34
6.7 RS 232 interface......................................................................................................................................................... 37
6.7.1 Configuring the RS 232 interface......................................................................................................... 37
6.7.2 Protocol..................................................................................................................................................... 37
6.7.3 Cable test and interface test of RS 232............................................................................................... 38
6.7.4 Write commands...................................................................................................................................... 39
6.7.5 Read commands....................................................................................................................................... 39
6.7.6 Error messages........................................................................................................................................ 40
6.8 Alarm output............................................................................................................................................................... 40
6.8.1 Configuring the alarm output................................................................................................................ 40
6.8.2 Interface potential-free contact............................................................................................................. 41
6.9 Enter the oset for the temperature probe............................................................................................................ 42
6.10 Restore factory setting............................................................................................................................................... 42
7 Maintenance....................................................................................................................................................................... 44
7.1 General safety instructions........................................................................................................................................ 44
7.2 Maintenance intervals................................................................................................................................................ 44
7.3 Cleaning the device.................................................................................................................................................... 45
7.4 Cleaning the air-cooled condenser.......................................................................................................................... 45
7.5 Check the heat transfer liquid................................................................................................................................... 45
8 Faults.................................................................................................................................................................................... 46
8.1 Alarms, errors and warnings....................................................................................................................................... 46
8.2 Overview of alarms..................................................................................................................................................... 47
8.3 Overview of warnings.................................................................................................................................................. 47
9 Decommissioning................................................................................................................................................................ 48
9.1 Draining the device..................................................................................................................................................... 48
10 Disposal................................................................................................................................................................................ 49
10.1 Disposing of refrigerant............................................................................................................................................. 49
10.2 Device disposal............................................................................................................................................................ 49
10.3 Disposing of packaging............................................................................................................................................... 49
11 Technical data...................................................................................................................................................................... 50
11.1 General data................................................................................................................................................................ 50
11.2 Cooling unit.................................................................................................................................................................. 51
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11.3 Refrigerant and filling charge...................................................................................................................................... 51
11.4 Hydraulic circuit.......................................................................................................................................................... 52
11.5 Voltage-dependent data............................................................................................................................................ 52
12 General................................................................................................................................................................................. 53
12.1 Copyright..................................................................................................................................................................... 53
12.2 Technical changes....................................................................................................................................................... 53
12.3 Contact LAUDA......................................................................................................................................................... 53
12.4 Declaration of Conformity........................................................................................................................................ 53
12.5 Product Returns and Clearance Declaration.......................................................................................................... 55
13 Index..................................................................................................................................................................................... 56
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1 Safety
1.1 General safety instructions
nThe devices can only be operated as intended under the conditions
specified in this operating manual. Any other mode of operation is
considered to be unintended use and could compromise the protection
provided by the device.
nThe devices are not designed for use in medical applications in accord-
ance with DIN EN 60601-1 and IEC 601-1!
nThis operating manual is part of the device. The information in this oper-
ating manual must therefore be kept at hand in the immediate vicinity of
the device. Be sure to carefully store this copy of the operating manual.
If this operating manual is lost, contact LAUDA Service Constant
Temperature Equipment. You will find the contact information here
ÄChapter 12.3 “Contact LAUDA” on page 53.
When operating the device, there is a risk of injury from high and low
temperatures, fire and the presence of electrical energy. These risks posed
by the device have been mitigated in the design to the extent possible in
keeping with the applicable norms. The remaining risk can be reduced using
one of the following measures:
nIf relevant, safety fittings are available for the device. This equipment is
critical to the safety of the device. Appropriate maintenance activities
must be implemented to ensure the device remains in good working
order.
The safety fittings for the device are described in this "Safety" chapter.
nIf relevant, various warning symbols are located on the device. These
symbols must be observed without fail.
The warning symbols on the device are described in this "Safety" chapter.
nThis operating manual contains safety information. This information
must be followed at all times.
nPersonnel and the protective equipment worn by personnel are also
subject to specific requirements.
These requirements are described in this "Safety" chapter.
An overview of authorized personnel and the protective equip-
ment can be found in ÄChapter 1.10 “Personnel qualification”
on page 8 and ÄChapter 1.11 “Personal protective equip-
ment” on page 9.
Refer to ÄChapter 1.12 “Structure of warnings” on page 9
for more information on the general structure of safety notices.
1.2 Intended Use
The present device is exclusively permitted to be used for tempering and
delivering non-flammable heat transfer liquids in a closed circuit.
Intended Use
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The following applications are considered to be non-intended:
nin potentially explosive areas
nfor tempering foodstus
nwith a glass reactor without overpressure protection
1.3 Foreseeable misuse
Misuse of the device must always be prevented.
Among other things, the following uses are considered to be foreseeable
misuse:
nOperation of the device without heat transfer liquid
nIncorrect connection of hoses
nSetting the device up on a tabletop surface, only permitted for MC 250
and MC 350
nSetting an incorrect pump pressure
1.4 EMC requirements
Table 1: Classification in accordance with EMC requirements
Device Immunity requirements Emissions class Customer power supply
Microcool Table 2 (Industrial) in accord-
ance with DIN EN 61326-1 Emissions Class B in accordance with CISPR 11
Only for EU
Domestic connection value
³100 A
Microcool Table 2 (Industrial) in accord-
ance with DIN EN 61326-1 Emissions Class B in accordance with CISPR 11
Rest of the world (outside EU)
No limitation
"This equipment has been tested and found to comply with the limits for
Class A digital device, pursuant to Part 15 of the FCC (Federal Communica-
tion Commission) Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communica-
tions. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the
interference at his own expense."
“This Class A digital apparatus complies with Canadian ICES-003” (ICES =
Interference Causing Equipment Standards).
« Cet appareil numérique de la classe A est conforme à la norme NMB-003
du Canada ».
1.5 Prohibition of modifications to the device
Any technical modification of the device by the user is prohibited. Any
damage resulting from unauthorized modification is not covered by customer
service or the product warranty. Service work may only be performed by the
LAUDA Service department or a service partner authorized by LAUDA.
Non-intended use
Instructions for Class A digital device, USA
Instructions for Class A digital device,
Canada
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1.6 Requirements for the heat transfer liquid
nHeat transfer liquids are used to control the temperature. LAUDA heat
transfer liquids are recommended for the constant temperature equip-
ment. LAUDA heat transfer liquids have been tested by the company
LAUDA DR. R. WOBSER GMBH & CO. KG and approved for this
device.
nThe heat transfer liquids are suitable for a specific temperature range.
This temperature range must correspond with the temperature range of
your application.
nHazards caused by high or low temperatures or fire may arise during
operation if the heat transfer liquid exceeds or falls below certain tem-
peratures or if the container ruptures causing a reaction with the heat
transfer liquid.
nThe safety data sheet of the heat transfer liquid specifies hazards and
the corresponding safety measures required for handling the liquid. The
safety data sheet of the heat transfer liquid must therefore be observed
to ensure proper use of the device.
nIf you wish to use your own heat transfer liquids, check to ensure that
the fluids are compatible with the materials used.
nThe heat transfer liquid must be provided with corrosion protection.
1.7 Materials
All parts that come into contact with heat transfer liquid are manufactured
from high-quality materials adapted to withstand the operating temperature.
High-quality stainless steels and premium-quality heat-resistant plastics are
used.
1.8 Hose requirements
The hoses for the external hydraulic circuit must be resistant to:
nthe heat transfer liquid used
nthe pressure in the hydraulic circuit
nthe high and low working temperatures
1.9 Application area
The device may only be used in the following areas:
nProduction, quality assurance, research and development in an industrial
environment
nInternal areas, not suitable for outdoor installation
1.10 Personnel qualification
Operating personnel
Operating personnel are employees that have been instructed by technical
sta in the intended use of the device according to the operating manual.
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1.11 Personal protective equipment
Protective clothing
Protective clothing is required for certain activities. This protective clothing
must comply with the legal requirements for personal protective equipment.
Protective clothing should have long sleeves. Safety footwear is additionally
required.
Protective gloves
CE protective gloves are required for certain activities. These protective
gloves must comply with the legal requirements for personal protective
equipment of the European Union.
Protective goggles
Protective goggles are required for certain activities. These protective gog-
gles must comply with the legal requirements for personal protective equip-
ment of the European Union.
1.12 Structure of warnings
nA warning of "dangerous" indicates an immediately dangerous situation.
nIf this warning is not observed, then death or severe, irreversible injury
could occur.
DANGER!
Type and source
Consequences of not following instructions
Measure 1
Measure...
nA warning of "warning" indicates a possibly dangerous situation.
nIf this warning is not observed, then death or severe, irreversible injury
could occur.
WARNING!
Type and source
Consequences of not following instructions
Measure 1
Measure...
Dangerous
Warning
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nA warning of "caution" indicates a possibly dangerous situation.
nIf this warning is not observed, then minor, reversible injury could occur.
CAUTION!
Type and source
Consequences of not following instructions
Measure 1
Measure...
A "notice" warns that dangers to property or the environment may exist.
NOTICE!
Type and source
Consequences of not following instructions
Measure 1
Measure...
Caution
Notice
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2 Unpacking
DANGER!
Transport damage
Electric shock
Closely inspect the device for transport damage prior to
commissioning!
Never operate a device that has sustained transport
damage!
Personnel: nOperating personnel
1. Unpack the device.
Keep the original packaging of the device for subsequent
transportation.
2. Check the device and accessories for completeness and transport
damage immediately after delivery.
If the device or accessories are damaged contrary to expect-
ations, immediately inform the shipping company so that a
damage report can be compiled and the transport damage
inspected. Also notify LAUDA Constant Temperature Equip-
ment Service department immediately. You will find the con-
tact information here ÄChapter 12.3 “Contact LAUDA”
on page 53.
Table 2: Accessories included as standard
Device type Designation Quantity Catalog number
MC 600, MC 1200 Hose nozzle ¾" with union nut ¾" 2 EOA 004
All devices Operating manual 1 --
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3 Device description
3.1 Device types
The names of the devices consist of the following components.
Component Description
MC Microcool
<number>, e.g. 600 Indication of the cooling capacity in watts
Device type Description
MC 250 Air-cooled table-top device with a cooling
capacity of 250 watts
MC 350 Air-cooled table-top device with a cooling
capacity of 350 watts
MC 600 Air-cooled, floor-standing device with a cooling
capacity of 600 watts The pump pressure can
be set via a bypass adjusting wheel.
MC 1200 Air-cooled, floor-standing device with a cooling
capacity of 1200 watts The pump pressure can
be set via a bypass adjusting wheel.
3.2 Structure of the circulation chiller
Note: The illustrations partly show devices in dierent casing versions. This
does not aect the operation.
Available device types
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Fig. 1: Overview of the front (MC 350)
1 Filler nozzle with cover
2 Level indication
3 Operating unit
4 Front panel with ventilation openings
5 Four feet
Front of the MC 250 and MC 350
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Fig. 2: Overview of the back
1Overflow connection
2 Pump connection, outflow
4 Rating label
5 Alarm output
6 RS 232 interface
7 Power supply
8 Drain screw
9 Ventilation openings
Back of the MC 250, MC 350
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3 Pump connection, return flow

Fig. 3: Overview of the front
1 Filler nozzle with cover
2 Level indication
3 Operating unit
4 Pressure gage
5 Front panel with ventilation openings
6 Four casters with locking brake
Front of the MC 600, MC 1200
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Fig. 4: Overview of the back
1 Pump connection, outflow
2 Bypass adjusting wheel
4Overflow connection
5 Rating label
6 RS 232 interface
7 Alarm output
8 Power supply
9 Drain screw
10 Ventilation openings
Back of the MC 600, MC 1200
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3 Pump connection, return flow

1 Display
2 LEDs
3 Display buttons
4 Mains switch
3.3 Operating elements
3.3.1 Mains switch
The mains switch can be set to the following positions:
nPosition [I] switches the device on.
nPosition [O] switches the device o.
3.3.2 Display buttons
1 Up arrow button
2 Enter key
3 Down arrow button
Functions in the device display can be controlled by means of the display
buttons.
nThe Enter button can be used to confirm a selection in the display.
nThe up and down arrow buttons can be used to navigate in the display.
Operating unit
Fig. 5: Operating unit
Fig. 6: Display buttons
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3.4 Functional elements
3.4.1 LEDs for function display
1 yellow LED
2 Blue cooling LED
3 Red error LED
Each device has three LEDs with the following functions:
nThe yellow LED is lit if Kryo 30 is required as a heat transfer liquid.
nThe blue cooling LED indicates whether the cooling unit is active.
nThe red error LED is lit if the device has an error.
3.4.2 Hydraulic circuit
The hydraulic circuit refers to the circuit that the heat transfer liquid flows
through.
The circuit essentially consists of the following components:
nInternal storage tank with heat transfer liquid
nPump for conveying the heat transfer liquid to the external consuming
unit via the pump connections
nFrom MC 600 on, the devices are equipped with an adjustable bypass
to adjust the pump pressure to the requirements of the external con-
suming unit.
The devices are equipped with a magnetically coupled pressure pump.
You will find further information on the technical data of the pump
and the pump characteristics in ÄChapter 11.4 “Hydraulic cir-
cuit” on page 52.
Fig. 7: LEDs
Hydraulic circuit
Pump
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3.4.3 Pressure gage
The device types with a bypass are equipped with a pressure gage for reading
the set pump pressure. The pump pressure is regulated via the bypass
adjusting wheel. The bypass adjusting wheel is located on the back of the
device.
3.4.4 Level indication
The fill level of the heat transfer liquid in the circuit can be read via the level
indication.
nThe maximum liquid level of the device is indicated via the top arrow.
nThe minimum liquid level of the device is indicated via the bottom arrow.
1 Maximum level
2 Minimum level
3.4.5 Cooling unit
The cooling unit consists of the following main components:
nCompressor
A fully hermetically encapsulated compressor is used in the cooling unit.
The compressor is equipped with a thermal cutout which reacts to the
temperature and current consumption of the compressor.
nCondenser
The condensation heat is discharged to the environment in the case of
air-cooled condensers. Fresh air is drawn in through the front of the
device by means of a fan, heated and then discharged at the back of the
device for this purpose.
nEvaporator
Heat is dissipated from the bath by means of a tube coil evaporator in
the case of an internal bath.
Fig. 8: Pressure gage
Fig. 9: Level indication
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You will find technical data on the cooling unit in ÄChapter 11.2
“Cooling unit” on page 51.
3.4.6 Interfaces
Please note the following:
nThe equipment connected to the extra-low voltage inputs and outputs
must be reliably isolated from voltages dangerous to the touch in
accordance with DIN EN 61140. For example, by double or reinforced
insulation according to DIN EN 60730-1 or DIN 60950-1.
You can use the RS 232 interface to control certain device functions, such
as set temperature, on a PC. This allows individual programs to be developed
to control the device.
You will find further information on the connection and configu-
ration in ÄChapter 6.7.3 “Cable test and interface test of
RS 232” on page 38 and ÄChapter 6.7.1 “Configuring the
RS 232 interface” on page 37.
Change-over contact which is switched in the event of a fault in the device.
Faults can therefore be reported e.g. to a system.
The fault situations in which a signal is output via the interface can
be set via the display.
RS 232 interface
Alarm output
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