Lauda MC 250 User manual

Microcool
MC 250, MC 350, MC 600, MC 1200
Operating instructions
Circulation chiller
V05REV08 Read the instructions prior to performing any task!

Translation of the original operating instructions
LAUDA DR. R. WOBSER GMBH & CO. KG
Pfarrstrasse 41/43
97922 Lauda-Königshofen
Germany
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: https://www.lauda.de
YAWD0033, 5, en_GB ©LAUDA 2013
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To replace issues V5R7, V5R5, V4R13, V4R6, V3R20, V3R19, V3R17
15/10/2020

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 classification......................................................................................................................................................... 7
1.5 No modifications may be made to the device............................................................................................................ 7
1.6 Requirements for the heat transfer liquid.................................................................................................................. 8
1.7 Materials......................................................................................................................................................................... 8
1.8 Requirements regarding the hoses.............................................................................................................................. 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 Design of the circulation chiller.................................................................................................................................. 13
3.3 Operating elements..................................................................................................................................................... 17
3.3.1 Mains power switch................................................................................................................................... 17
3.3.2 Display buttons......................................................................................................................................... 18
3.4 Functional elements.................................................................................................................................................... 19
3.4.1 LEDs for function display......................................................................................................................... 19
3.4.2 Hydraulic circuit........................................................................................................................................ 19
3.4.3 Manometer............................................................................................................................................... 20
3.4.4 Level indicator.......................................................................................................................................... 20
3.4.5 Cooling unit.............................................................................................................................................. 20
3.4.6 Interfaces................................................................................................................................................... 21
3.5 Type plate..................................................................................................................................................................... 22
4 Before starting up................................................................................................................................................................ 23
4.1 Device Placement....................................................................................................................................................... 23
4.2 External consumer...................................................................................................................................................... 24
4.2.1 Hoses......................................................................................................................................................... 24
4.2.2 Connecting external consumer.............................................................................................................. 25
4.3 RS 232 interface......................................................................................................................................................... 26
4.3.1 Cable and interface test RS 232........................................................................................................... 26
4.4 Alarm output 12N........................................................................................................................................................ 27
5 Commissioning.................................................................................................................................................................... 29
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5.1 LAUDA heat transfer liquids..................................................................................................................................... 29
5.2 Establishing power supply.......................................................................................................................................... 30
5.3 Switching on the device and filling with heat transfer liquid.................................................................................. 30
5.4 Setting the pump pressure......................................................................................................................................... 32
6 Operation............................................................................................................................................................................ 34
6.1 Switching on the device............................................................................................................................................. 34
6.2 Default display and menu items................................................................................................................................ 34
6.3 Screen displays............................................................................................................................................................ 37
6.4 Specifying the setpoint temperature........................................................................................................................ 37
6.5 Restricting temperature limit values......................................................................................................................... 38
6.6 Configuring timer........................................................................................................................................................ 39
6.7 RS 232 interface.......................................................................................................................................................... 41
6.7.1 Configuring RS 232 interface................................................................................................................ 41
6.7.2 Protocol..................................................................................................................................................... 41
6.7.3 Write commands...................................................................................................................................... 42
6.7.4 Read commands...................................................................................................................................... 43
6.7.5 Error messages......................................................................................................................................... 43
6.8 Configuring alarm output.......................................................................................................................................... 44
6.9 Inputting oset of the temperature sensor............................................................................................................. 44
6.10 Restoring the factory settings................................................................................................................................... 45
7 Maintenance........................................................................................................................................................................ 46
7.1 General safety instructions........................................................................................................................................ 46
7.2 Maintenance intervals................................................................................................................................................ 46
7.3 Cleaning the device..................................................................................................................................................... 47
7.4 Cleaning air-cooled condenser................................................................................................................................. 47
7.5 Checking heat transfer liquid..................................................................................................................................... 47
8 Faults.................................................................................................................................................................................... 48
8.1 Alarms, errors and warnings...................................................................................................................................... 48
8.2 Alarms overview.......................................................................................................................................................... 49
8.3 Warnings overview...................................................................................................................................................... 49
9 Decommissioning................................................................................................................................................................ 50
9.1 Draining the device..................................................................................................................................................... 50
10 Disposal................................................................................................................................................................................. 51
10.1 Disposing of refrigerant............................................................................................................................................... 51
10.2 Device disposal............................................................................................................................................................. 51
10.3 Disposing of packaging................................................................................................................................................ 51
11 Technical Data..................................................................................................................................................................... 52
11.1 General data................................................................................................................................................................ 52
11.2 Cooling unit................................................................................................................................................................. 53
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11.3 Refrigerant and filling quantity.................................................................................................................................. 53
11.4 Hydraulic circuit.......................................................................................................................................................... 54
11.5 Voltage-dependent data............................................................................................................................................ 54
12 General................................................................................................................................................................................. 55
12.1 Copyright..................................................................................................................................................................... 55
12.2 Technical changes....................................................................................................................................................... 55
12.3 LAUDA contact.......................................................................................................................................................... 55
13 Index..................................................................................................................................................................................... 56
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1 Safety
1.1 General safety instructions
nThe devices must only be operated for the intended purpose under the
conditions stated in this operating manual. Any other operating mode is
considered to be non-intended use and can impair the protection pro-
vided by the device.
nThe devices are not designed for use under medical conditions in
accordance with DIN EN 60601-1 or IEC 601-1!
nThe operating manual is a constituent part of the device. The information
in this operating manual must therefore be available in the immediate
vicinity of the device. Also take care to keep this copy of the operating
manual.
If you lose this operating manual, contact the LAUDA Constant
Temperature Equipment service department. The contact details can
be found in ÄChapter 12.3 ‘LAUDA contact’ on page 55.
Use of the device results in hazards from high or low temperatures, fire and
from the use of electrical energy. The hazards of the device must be elimi-
nated as much as possible by the design in accordance with the appropriate
standards. Residual hazards are reduced using any of the following measures:
nIf relevant, there are safety fittings for the device. These devices are
essential for the safety of the device. Their functionality must be
ensured by carrying out the appropriate maintenance activities.
The safety fittings of the device are described in this "Safety" chapter.
nIf relevant, there are warning symbols on the device. These symbols must
always be observed.
The warning symbols on the device are described in this “Safety”
chapter.
nThere are safety instructions in this operating manual. These instructions
must always be observed.
nThere are additional specific requirements for the sta and for the per-
sonal protective equipment.
These requirements are described in this "Safety" chapter.
An overview of the authorised 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.
Further information about the general structure of safety instruc-
tions can be found in ÄChapter 1.12 ‘Structure of warnings’
on page 9.
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 classification
Tab. 1: Classification in accordance with EMC requirements
Device Interference immunity Emission class Customer power supply
Microcool Type 2 in accordance with
DIN EN 61326-1 Emission class B in accordance with CISPR 11
only for EU
Domestic connection value
³100 A
Microcool Type 2 in accordance with
DIN EN 61326-1 Emission class B in accordance with CISPR 11
for rest of the world (outside
EU)
Unrestricted
"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."
1.5 No modifications may be made to the device
Any modification of the device by the user is prohibited. The consequences
of any such modifications are not covered by the product warranty or cus-
tomer service. Service work is only permitted to be carried out by the
LAUDA Constant Temperature Equipment service department or one of
the service partners authorised by LAUDA.
Non-intended use
Instructions for Class A digital device, USA
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1.6 Requirements for the heat transfer liquid
nHeat transfer liquids are used for temperature control. Only LAUDA
heat transfer liquids are approved for use in the device. LAUDA heat
transfer liquids are tested and approved by
LAUDA DR. R. WOBSER GMBH & CO. KG
nIn each case, the heat transfer liquids cover a specific temperature
range. This temperature range must match the temperature range of
your application.
nThe use of heat transfer liquids can cause hazards arising from high and
low temperatures, and fire, if certain temperature thresholds are
exceeded or if the temperature falls below the threshold value, or if the
container breaks and there is a reaction with the heat transfer liquid.
nThe safety data sheet specifies the hazards and appropriate safety meas-
ures for handling the heat transfer liquid. The safety data sheet of the
heat transfer liquid must therefore be consulted for the intended use of
the device.
1.7 Materials
All parts coming into contact with the heat transfer liquid are made of high
quality materials suitable for the operating temperature. Stainless steel and
temperature-resistant plastics are used.
1.8 Requirements regarding the hoses
Only LAUDA hoses must be used for the external hydraulic circuit. LAUDA
hoses are hoses approved by LAUDA DR. R. WOBSER GMBH & CO. KG.
Particular attention must be paid to the permissible temperature range and
the maximum permissible pressure when selecting suitable hoses for the
application.
1.9 Application area
The device is exclusively permitted to be used in the following areas.
nCommercial area
nIndoor use, no 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 the type "Danger" indicates an imminently hazardous situa-
tion.
nThis will result in death or severe, irreversible injuries if the warning is dis-
regarded.
DANGER!
Type and source
Consequences in the event of non-compliance
Measure 1
Measure…
nA warning of the type "Warning" indicates a potentially hazardous situa-
tion.
nThis can result in death or severe, irreversible injuries if the warning is
disregarded.
WARNING!
Type and source
Consequences in the event of non-compliance
Measure 1
Measure…
Danger
Warning
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nA warning of the type "Caution" indicates a potentially hazardous situa-
tion.
nThis can result in minor, reversible injuries if the warning is disregarded.
CAUTION!
Type and source
Consequences in the event of non-compliance
Measure 1
Measure…
A "notice" warns about possible property or environmental damage.
NOTICE!
Type and source
Consequences in the event of non-compliance
Measure 1
Measure…
Caution
Notice
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2 Unpacking
DANGER!
Transport damage
Electric shock
Inspect the device for transport damage before commis-
sioning.
Never put the device into operation if you have discovered
any transport damage.
Personnel: nOperating personnel
1. Unpack the device.
Keep the original packaging of the device for later transport.
2. Inspect the device and the accessories immediately after delivery for
completeness and transport damage.
If there is unexpected damage to the device or accessories,
inform the carrier immediately so that a damage report is
produced and a check of the transport damage can be made.
Also inform LAUDA Service Constant Temperature Equip-
ment immediately. Contact details can be found in
ÄChapter 12.3 ‘LAUDA contact’ on page 55.
Tab. 2: Accessories included as standard
Device type Designation Quantity Catalogue
number
MC 600, MC 1200 ¾" hose nozzle with ¾" screw cap 2 EOA 004
All devices Operating manual 1 --
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3 Device description
3.1 Device types
The type designation of the equipment is composed of the following ele-
ments.
Component Description
MC Microcool
<Number>, e.g. 600 Specification of the cooling capacity in watts
Device type Description
MC 250 Air-cooled tabletop device with a cooling
capacity of 250 watts
MC 350 Air-cooled tabletop 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 adjusted using a bypass adjustment wheel.
MC 1200 Air-cooled floor-standing device with a cooling
capacity of 1200 watts. The pump pressure can
be adjusted using a bypass adjustment wheel.
Available device types
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3.2 Design of the circulation chiller
Fig. 1: Overview of the front side
1 Filler nozzle with cover
2 Level indicator
3 Control panel
4 Front panel with ventilation openings
5 Four support feet
Front side MC 250, MC 350
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Note:
Some of the illustrations show devices in different housing designs.This has
no influence on the operation.

Fig. 2: Overview of the rear side
1 Pump connection, outlet
2Overflow connection
3 Pump connection, inlet
4 Type plate
5 RS 232 interface
6 Alarm output
7 Drain plug
8 Mains cable
9 Ventilation openings
Rear side MC 250, MC 350
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Fig. 3: Overview of the front side
1 Filler nozzle with cover
2 Level indicator
3 Control panel
4 Manometer
5 Front panel with ventilation openings
6 Four castors with locking brakes
Front side MC 600, MC 1200
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Fig. 4: Overview of the rear side
1 Bypass adjustment wheel
2 Pump connection, inlet
3 Pump connection, outlet
4Overflow connection
5 Type plate
6 Drain plug
7 Alarm output
8 RS 232 interface
9 Mains cable
10 Ventilation openings
Rear side MC 600, MC 1200
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Fig. 5: Control panel
1 Display
2 LEDs
3 Display buttons
4 Mains switch
3.3 Operating elements
3.3.1 Mains power switch
The mains power switch can be put in the following positions:
nIn position [I], the device is switched on.
nIn position [O], the device is switched o.
Control panel
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3.3.2 Display buttons
Fig. 6: Display buttons
1 UP arrow button
2 ENTER button
3 DOWN arrow button
Functions in the display of the device can be controlled using the display
buttons.
nA selection in the display can be confirmed with the ENTER button.
nThe UP and DOWN arrow buttons can be used to navigate in the dis-
play.
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3.4 Functional elements
3.4.1 LEDs for function display
Fig. 7: LEDs
1 Yellow LED
2 Blue refrigeration LED
3 Red error LED
Each device has three LEDs with the following functions:
nThe yellow glycol LED lights if Kryo 30 is necessary as heat transfer
liquid.
nThe blue refrigeration LED indicates whether the refrigeration unit is
active.
nThe red error LED lights in the event of device faults.
3.4.2 Hydraulic circuit
The hydraulic circuit designates the circuit through which the heat transfer
liquid flows.
The circuit basically consists of the following components:
ninternal storage bath with heat transfer liquid
npump for conveying the heat transfer liquid into the external consumer
via the pump connections
nStarting with MC 600, devices are equipped with an adjustable bypass
to be able to adapt the pump pressure to the requirements of the
external consumer.
The devices are equipped with a magnetically coupled pressure pump.
Hydraulic circuit
Pump
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Further information about the technical data of the pump and the
pump characteristic curve can be found ÄChapter 11.4 ‘Hydraulic
circuit’ on page 54.
3.4.3 Manometer
The device types with bypass have a manometer for reading the set pump
pressure. The pump pressure is regulated using the bypass adjustment wheel
on the rear side.
3.4.4 Level indicator
The fill level of the heat transfer liquid in the circuit can be read using the
level indicator.
nThe top arrow indicates the maximum liquid level of the machine.
nThe bottom arrow indicates the minimum liquid level of the machine.
1 Maximum level
2 Minimum level
3.4.5 Cooling unit
The cooling unit includes the following components:
nCompressor
A hermetically sealed compressor is used in the cooling unit. The com-
pressor is equipped with overload protection, which trips on the com-
pressor temperature and compressor current consumption.
nCondenser
In air-cooled condensers, the condensation heat is discharged to the
environment. The fresh air is sucked in through the front of the device
using a fan, heated and discharged on the rear of the device.
nEvaporator
In the internal bath, heat is discharged using a pipe coil evaporator.
Fig. 8: Manometer
Fig. 9: Level indicator
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