Lauda DLK 10 User manual

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Read the operating instructions before starting all work.
LAUDA DR. R. WOBSER GMBH & CO. KG
Pfarrstraße 41/43
97922 Lauda-Königshofen
Germany
Valid from series : 04-0001
release English 05/2018 f
replaces release 07/2016 e2; 07/2015 e1; 06/04
YAFE0004 Translation of the original operating instructions
Phone : [phone]
Fax : [phone]
E-mail [email protected]
Internet http://www.lauda.de
Operating instructions
Through-flow coolers
DLK 10, DLK 25, DLK 45, DLK 45 LiBus

Through flow coolers
16/03/2018 / YAFE0004 Safety notes 3
Safety notes
Before you operate the unit please read carefully all the instructions and safety notes.
If you have any questions please phone us!
Follow the instructions on setting up, operation etc. This is the only way to avoid
incorrect operation of unit and to ensure full warranty protection.
Transport the unit with care!
The unit may NEVER be overturned nor put upside down!
Unit and its internal parts can be damaged :
by dropping
by shock.
Unit must only be operated by technically qualified personnel!
Never operate the equipment without the heat transfer liquid!
Do not start up the unit if
it is damaged
the supply cable is damaged.
Switch off the unit and pull out the mains plug for :
servicing or repair
before moving the unit.
Have the unit serviced or repaired only by properly qualified personnel!
The Operating Instructions include additional safety notes which are identified
by a triangle with an exclamation mark. Carefully read the instructions and
follow them accurately!
Disregarding the instructions may have serious consequences, such as
damage to the unit, damage to property or injury to personnel!
We reserve the right to make technical alterations!

Through flow coolers
4Contents 16/03/2018 / YAFE0004
Contents
SAFETY NOTES....................................................................................................................................................3
CONTENTS..........................................................................................................................................................4
1SAFETY INFORMATION ..............................................................................................................................5
1.1 GENERAL SAFETY NOTES..........................................................................................................................5
1.2 OTHER SAFETY NOTES..............................................................................................................................6
1.3 EU CONFORMITY ......................................................................................................................................6
2BRIEF OPERATING INSTRUCTIONS .........................................................................................................7
3CONTROL AND FUNCTIONAL ELEMENTS...............................................................................................8
4GENERAL CONSTRUCTION AND TECHNICAL DESCRIPTION...............................................................9
5UNPACKING AND SETTING UP................................................................................................................10
5.1 UNPACKING............................................................................................................................................10
5.2 SETTING UP............................................................................................................................................10
6CONNECTION OF EXTERNAL SYSTEMS................................................................................................11
6.1 THERMOSTATS WITHOUT EXTERNAL SYSTEMS..........................................................................................11
6.2 THERMOSTATS CONNECTED TO PRESSURE-TIGHT EXTERNAL SYSTEMS .....................................................12
6.3 THERMOSTATS WITH DUPLEX PUMP OR PRESSURE/SUCTION PUMP CONNECTED TO OPEN BATH ..............13
7ELECTRICAL CONNECTION.....................................................................................................................14
7.1 DLK 10 /25 /45 AND THERMOSTAT WITHOUT MAINS SUPPLY OUTPUT 34H...............................................14
7.2 DLK 10 /25 /45 AND THERMOSTAT WITH MAINS SUPPLY OUTPUT 34 H ....................................................15
7.3 DLK 45 WITH PROPORTIONAL COOLING METHOD......................................................................................16
7.4 DLK 10 /25 AND PROLINE HEATING THERMOSTATS WITH PROPORTIONAL COOLING METHOD......................17
7.5 DLK 45 LIBUS AND PROLINE HEATING THERMOSTATS WITH PROPORTIONAL COOLING METHOD..................18
8STARTING UP ............................................................................................................................................19
9MAINTENANCE ..........................................................................................................................................20
9.1 CLEANING ..............................................................................................................................................20
9.2 REPAIR AND DISPOSAL NOTE...................................................................................................................21
9.3 HELP DESK AND ORDERING REPLACEMENT PARTS....................................................................................21
10 TECHNICAL DATA.....................................................................................................................................22
10.1 REFRIGERANT AND FILLING QUANTITY......................................................................................................23
10.2 FUSES ...................................................................................................................................................23
Special Symbols:
Danger:
This symbol is used where there may be injury to
personnel through incorrect handling.

Note:
Here special attention is drawn to some aspect. May
include reference to danger.

Reference
Refers to additional information in other sections.

Through flow coolers
16/03/2018/ YAFE0004 Safety information 5
1 Safety information
1.1 General safety notes
A through flow cooler serves for due cooling of heat transfer liquids which are tempered by means of
a bath thermostat and transferred by pumping. This leads to hazards through high temperatures, fire,
and the general hazards through the use of electrical energy.
The user is largely protected through the application of the appropriate standard specifications.
Additional hazards may arise from the type of material being thermostated, e.g. when going above or
below certain temperature levels or through breaking of the container and reaction with the heat
transfer liquid.
It is not possible to cover all possibilities; they remain largely within the responsibility and the
judgement of the user.

The equipment must only be used as intended and as described in these Operating
Instructions. This includes operation by suitably instructed qualified personnel.
The units are not designed for use under medical conditions according to DIN EN 60601-1 or
IEC 601-1!
Classification in accordance with EMC requirements
Device
Immunity
Emissions class
Customer power
supply
Through-flow cooler
DLK 10
DLK 25
Type 2 in accordance
with
DIN EN 61326-1
Emissions Class B
in accordance with
CISPR 11
Worldwide
No limitation
Through-flow cooler
DLK 45
DLK 45 LiBus
Type 2 in accordance
with
DIN EN 61326-1
Emissions Class B
in accordance with
CISPR 11
Only for EU
Domestic connection
value ≥ 100 A
Through-flow cooler
DLK 45
DLK 45 LiBus
Type 2 in accordance
with
DIN EN 61326-1
Emissions Class B
in accordance with
CISPR 11
Rest of the world
(outside EU)
No limitation

Through flow coolers
6Safety information 16/03/2018 / YAFE0004
1.2 Other safety notes
Connect the equipment only to an earthed supply socket.
Use suitable hoses.
Protect tubing with hose clips against slipping off. Prevent kinking of tubing!
Check tubing from time to time for possible material fatigue!
Heat transfer tubing and other hot parts must not come into contact with the supply cable!!
During operation of the through flow cooler, hot tempering liquid may penetrate through the hose in
case of hose rupture, thus constituting a danger to persons and material goods.
vapours to be produced. Ensure appropriate ventilation!
When changing the heat transfer liquid from water to liquids for temperatures above 100 °C
carefully remove all traces of water, also from tubing and from the external circuit, otherwise 
danger of burns through delayed boiling!
Always pull out the mains plug before cleaning, maintenance or moving the through-flow cooler!
Repairs must only be carried out by properly qualified personnel!
Values for temperature control and indicating accuracy apply under normal conditions according to
DIN 12876. High-frequency electromagnetic fields may under special conditions lead to
unfavourable values. This does not affect safety!
1.3 EU conformity
The device complies with the basic health and safety requirements outline in the
Directives listed below.
Machinery Directive 2006/42/EC
EMC Directive 2014/30/EU
LAUDA DR. R. WOBSER GMBH & CO. KG –Pfarrstraße 41/43 -
97922 Lauda-Königshofen - Germany

The device does not fall under Pressure Equipment Directive
2014/68/EU because the device is only classified as high as
Category 1 and is covered by the Machinery Directive.
Depending on the heat transfer liquid used and the method of operation it is possible for irritating

Through flow coolers
16/03/2018 / YAFE0004 Brief operating instructions 7
2 Brief operating instructions
Check through-flow cooler during unpacking for any transport damage, and if necessary, inform the
carrier or the post office.
The unit may NEVER be overturned nor put upside down!
- Set up unit according to chapter 5.
- Connect tubing according to chapter 6.
Thermostats without external systems (Chapter 6.1).
Thermostats connected to pressure-tight external systems (Chapter 6.2).
Thermostats with DUPLEX pump or pressure/suction pump connected to
open bath
(Chapter 6.3).
- Secure tubing with clips to prevent slipping-off.
- Check the supply voltage against the data on the rating label. Insert the mains plug.
Switching on: First switch on thermostat, and then switch on through-flow cooler at
main power switch (green signal lamp lights up).
Switching off: First switch off through-flow cooler, and then switch off thermostat.
Never allow the through-flow cooler to run without liquid flowing through.

Through flow coolers
8Control and functional elements 16/03/2018 / YAFE0004
3 Control and functional elements
DLK 10 Mains switch
DLK 25 Pilot lamp Mains switch
DLK 45 Pilot lamp Mains switch
Switches located on the through flow coolers DLK 25 and DLK 45
Pilot lamp cooling unit
Cooling unit to be switched on manually.
AUTO Cooling unit automatically controlled with
thermostat.
Mains switch ON
DLK 45 LiBus Mains switch