Lauda VF 20040 C User manual

Operating Instructions
Versafreeze Chest Freezers
VF 20040 C, VF 55040 C, VF 75040 C,
VF 20085 C, VF 55085 C, VF 75085 C

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LAUDA-GFL Versafreeze chest freezers for the long-term storage of organic substances, for example, operate silently and
with exceptional reliability. Insulation consisting of vacuum insulation panels and polyurethane foam is the key to their eco-
nomical energy consumption.
The refrigeration compartment is made entirely of stainless steel.
The refrigeration system incorporates fully hermetic, air-cooled high-performance compressors and is maintenance-free.
Chest freezer models VF 20040 C, VF 55040 C and VF 75040 C can be set to temperatures as low as -40 °C.
Chest freezer models VF 20085 C, VF 55085 C and VF 75085 C can be set to temperatures from -50 °C to -86 °C.
The devices are optimized for operation at the respective maximum target temperature.
Before installing the appliance, please check the content of the delivery for completeness and integrity.
If you discover damage or have any complaints, please get in touch with your supplier or contact us directly.
LAUDA DR. R. WOBSER GMBH & CO. KG
Schulze-Delitzsch-Str. 4+5
30938 Burgwedel - Deutschland
Telefon: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: https://www.lauda.de
Translation of the original operating instructions
Q4DT-E_13-015-EN-01, 14.11.2022
© 2022 LAUDA DR. R. WOBSER GMBH & CO. KG

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Table of contents
Operating Instructions ........................................................................................................................................1
1Using the chest freezers................................................................................................................................7
Intended use ........................................................................................................................................7
Improper use........................................................................................................................................7
2Warranty ....................................................................................................................................................7
3Before starting up ........................................................................................................................................8
4Location of the chest freezer .........................................................................................................................8
5Operating voltage and electrical connection....................................................................................................9
6Commissioning............................................................................................................................................9
Operating and display elements on the touch screen unit.........................................................................10
Switching the appliance on and off ........................................................................................................12
Selecting a user profile ........................................................................................................................12
Managing access rights for user profiles (login and user profile display) ......................................................12
6.4.1 Switching the appliance on and off .................................................................................................13
Language selection..............................................................................................................................14
Refrigeration compartment temperature set point ..................................................................................14
Changing the password........................................................................................................................15
7Function description ..................................................................................................................................16
Function of the data logger, history.......................................................................................................16
Data transfer via USB .........................................................................................................................17
Internet connection ............................................................................................................................17
7.3.1 Entering e-mail addresses for forwarding alarms ..............................................................................17
7.3.2 Email configuration ......................................................................................................................18
7.3.3 Alarm management .....................................................................................................................18
Water cooling equipment option...........................................................................................................19
7.4.1 Adjusting the cooling water flow regulator .......................................................................................20
8Alarm limit values ......................................................................................................................................21
Setting a limit value for the cover alarm delay .........................................................................................21
Overtemperature limit value ................................................................................................................21
Low temperature limit value .................................................................................................................21
USr User level....................................................................................................................................21
Alarm and potential-free contact..........................................................................................................22
Resetting an alarm ..............................................................................................................................22
Probe monitoring................................................................................................................................22
Overtemperature or low temperature alarm ...........................................................................................22
Mains power failure .............................................................................................................................22
Battery fault alarm (internal battery) .....................................................................................................22
9Care and maintenance................................................................................................................................23
Defrosting .........................................................................................................................................23
Technical support ...............................................................................................................................23
10 Disposing of old appliances..........................................................................................................................23
11 Technical data ...........................................................................................................................................24

12 Circuit diagram......................................................................................................................................... 26
13 Auxiliary equipment .................................................................................................................................. 36
Data logger for monitoring and recording refrigeration compartment temperature ..................................... 36
Storage system.................................................................................................................................. 36
13.2.1 Inserts ....................................................................................................................................... 36
13.2.2 Boxes ........................................................................................................................................ 37
13.2.3 Grids ......................................................................................................................................... 37
14 Notes ...................................................................................................................................................... 38
15 Ordering spare parts / LAUDA Service........................................................................................................ 39
16 Product Returns and Clearance Declaration................................................................................................. 40
17 EC Declaration of Conformity ................................................................................................................... 41

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1Using the chest freezers
Intended use
LAUDA Versafreeze chest freezers can be set to temperatures between 0°C and -86°C, depending on the version.
The chest freezers are intended for the long-term storage of organic substances, for example. The devices are optimized for
operation at the respective maximum target temperature, at which they also achieve their optimum temperature stability
(over time). The more the set target temperature deviates from the optimal operating temperature,
the greater the temperature stability.
It is essential to read the information in these operating instructions. This is the only way to ensure the
fault-free functioning of the chest freezer. Only persons familiar with these operating instructions are
permitted to install and operate the appliances.
Caution:
Due to the low temperatures in the refrigeration compartment, suitable protective gloves must always be
worn when storing and retrieving refrigerated goods. Arms must also be covered.
Improper use
LAUDA Versafreeze chest freezers are not suitable for the long-term storage of food and beverages, or similar products.
The storage of highly flammable and/or explosive substances is forbidden. The devices are optimized for operation at the
respective maximum target temperature, at which they also achieve their optimum temperature stability (over time).
The more the set target temperature deviates from the optimal operating temperature, the greater the temperature sta-
bility. As a result, the devices are only suitable for material testing purposes to a limited extent.
The chest freezer must not be installed or operated in laboratory areas with aggressive or corrosive ambient conditions.
Aggressive media such as hydrochloric acid may not be heated or evaporated in the immediate vicinity or inside the appli-
ance itself. The chest freezer must not be operated in hazardous areas.
LAUDA chest freezers used in laboratories are not classified as medical devices. They are not subject to national or inter-
national medical device law and must be used accordingly.
2Warranty
All laboratory equipment and accessories from LAUDA DR. R. WOBSER GMBH & CO. KG are subject to warranty
claims, including repairs, installation and spare parts. In order to identify faulty appliances, we need the type designation
and the serial number from the type plate located on the top left of the right side wall of the chest freezer and possibly a
copy of the invoice.

3Before starting up
The information in these operating instructions must be read and observed without fail. This is the only way to ensure the
fault-free functioning of the freezer appliance. Safety instructions are identified by the following warning symbols.
Read and observe the op-
erating instructions
Caution!
Flammable refrigerant
(hydrocarbons)
Warning indicating cold
surfaces
Warning of dangerous
electrical voltage
General safety warning
Warning indicating crush-
ing of hands
The appliance must be completely disconnected
(all poles) from the power supply before com-
mencing maintenance and repair work
(pull out the mains plug).
The warranty does not cover the free repair of malfunctions resulting from improper installation and handling.
Only trained and qualified personnel are permitted to perform service and repair work on refrigeration
equipment. In the event of repair work, the refrigerant quantity must not exceed the initial fill quantity.
See the type plate for quantity information and material specifications.
Before soldering work is carried out on the refrigeration system, the refrigerant must be drained com-
pletely and the system blown through with dry nitrogen. Only trained and qualified personnel are per-
mitted to dispose of refrigerant and removed components.
Caution: flammable refrigerant (hydrocarbons)
Due to the nature and quantity of the refrigerants used, naked flames are prohibited within a radius of
1 m of the appliance.
Removed components bearing this marking must be disposed of separately.
4Location of the chest freezer
Always install the appliance on a solid, flat, horizontal indoor surface. The installation room must be at least 24 m3in size.
Alternatively, the installation room must be ventilated. Freezer appliances must be positioned at a minimum of 150 mm
away from other appliances or walls so that the aspirated cooling air can circulate freely. The condenser at the back of the
appliance must not be obstructed or blocked.
The ambient temperature must not exceed +28 °C as this would reduce the cooling capacity of the appliance and increase
the temperature in the refrigeration compartment. Effective ventilation in the installation room is usually sufficient to
lower the temperature.
The appliance is not intended for use in areas with an explosion hazard, such as during anesthesia using flammable gases or
vapors. Please refer to the technical data for information on the appliance protection level.

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Before the appliance is moved to its place of installation, the electrical system (see point 5 of these instructions) and,
if necessary, the alarm system (see point 8.5) must be connected. Ensure that the connection cable is not damaged when
the freezer appliance is moved.
Caution! Due to the nature and quantity of the refrigerants used, naked flames are prohibited within a ra-
dius of 1 m of the appliance.
5Operating voltage and electrical connection
A marked equipotential bonding connection is located at the back of the chest freezer. Local regulations may stipulate the
need to connect the appliance to a grounding network for equipotential bonding. Please check before commissioning the
appliance.
The operating voltage and the mains frequency on the type plate (right side wall, top left) must
match the power supply specifications.
The main switch on the refrigeration system must switched off (position 0). Once these conditions
have been met, establish the electrical connection.
The refrigeration system may only be operated on a correctly installed power connection with a protective
earth conductor (PE) that complies with local regulations.
It must be possible to disconnect all poles of the power supply from the power network
(e.g. via an earthed socket or switch).
6Commissioning
Caution:
due to the low temperatures in the refrigeration compartment, suitable protective gloves must always be
worn when storing and retrieving refrigerated goods. Arms must also be covered.
Caution:
Do not leave the chest freezer keys near the appliance or within the reach of children.
Do not store acids or alkaline solutions that can erode the materials, hazardous substances that emit
harmful vapors, or highly flammable and/or explosive substances inside the appliance
(DGUV Information 213-850).
Read and observe the operating instructions.
Off
On

Operating and display elements on the touch screen unit
The three large colored symbols on the left of the display indicate the ACTUAL temperature at the most important points
on the appliance: the refrigeration compartment (blue field) and condenser (purple field), while the orange field shows the
voltage of the internal battery.
The bottom line on the display indicates whether the appliance is a single-stage or dual-stage device. Rotating symbols indi-
cate that the compressors or internal fan on the condenser are operating. The other symbols have the following meaning:
ON/OFF Alarm
Menu Cloud connection
Login and user profile display Back one level
Controller Data logger, history
Settings/Controller settings
LED status indicator
(see table below)