LIEBHERR LGUex1500 MediLine LGUex1500 Freezer Instruction Manual
- June 12, 2024
- LIEBHERR
Table of Contents
LIEBHERR LGUex1500 MediLine LGUex1500 Freezer
Product Information
The product is a freezer with an explosion-proof interior container. It is designed for storing flammable substances in closed containers and is classified as a Zone 2 hazardous area. The appliance has adjustable-height feet and various safety features, including audible and visual temperature alarms, a door open alarm, a floating contact for connection to a remote monitoring system, and a serial interface for external temperature and alarm documentation. The appliance also stores the maximum/minimum interior temperature, temperature alarms, and power cuts.
It is important to note that the appliance is not suitable for use in explosion-hazard areas. For the storage of valuable or temperature-sensitive substances or products, it is recommended to use an independent, constantly monitoring alarm system. The temperature sensor for this system should be positioned in the upper part of the interior container.
The climate rating of the appliance indicates the room temperature at which it can achieve full refrigeration performance. The climate rating is indicated on the type plate.
Product Usage Instructions
- Before switching on the appliance for the first time, read the operating instructions provided in the manual.
- Ensure proper disposal of the appliance according to local regulations and laws. The appliance contains reusable materials and should not be disposed of with unsorted household refuse. Take the packaging material to an official collection point to prevent suffocation hazards.
- Position the temperature sensor for an independent alarm system in the upper part of the interior container.
- Do not use the appliance in explosion-hazard areas.
- Use the safety facilities provided to avoid damage to stored items. Do not deactivate or decommission these safety facilities.
- Operate the appliance within the specified room temperature range indicated on the type plate.
- Ensure proper electrical connection of the appliance. Only operate it with alternating current (AC) within the permissible voltage and frequency indicated on the type plate. The socket must be properly earthed and protected by a fuse with a tripping current between 10 A and 16 A.
Operating instructions
Freezer with explosion-proof interior container
Read the operating instructions before switching on for the first time
Page 14 GB
7083 241-00
LGex
Disposal notes
The appliance contains reusable materials and should be disposed of
properly – not simply with unsorted household refuse. Appliances which are no
longer needed must be disposed of in a professional and appropriate way, in
accordance with the current local regulations and laws.
When disposing of the appliance, ensure that the refrigerant circuit is not
damaged to prevent uncontrolled escape of the refrigerant it contains (data on
type plate) and oil.
· Disable the appliance. · Pull out the mains plug. · Cut through the
connection cable.
WARNING Danger of suffocation due to packing material and plastic film! Do not
allow children to play with packaging material. Take the packaging material to
an official collection point.
Range of appliance use
The interior, which is free from sources of ignition, is used for storing
flammable substances in closed containers and is therefore classified as a
Zone 2 hazardous area.
The appliance is not suitable for use in explosion-hazard areas.
For the storage of valuable or temperature-sensitive substances or products
the use of an independent, constantly monitoring alarm system is necessary.
This alarm system must be designed so that each alarm status is detected
immediately by an authorised person who can then take appropriate action.
Position the temperature sensor for this system in the upper part of the
interior container (see Opening for external temperature sensor).
Description of the appliance
Operating and control elements
LGUex 1500
Drawers
Opening for external temperature sensor. On model LGex 3410, this opening is
located in the top part of the appliance.
Type plate
LGex 3410
Adjustable-height feet
Other features
– Audible and visual temperature alarm (adjustable limits). – Audible and
visual door open alarm. – Floating contact for connection to a remote
monitoring system. – Serial interface (RS485) for external temperature and
alarm
documentation. – Maximum/minimum interior temperature are stored. – Last 3
temperature alarms are saved with time, date and duration
of alarm. – Last 3 power cuts are saved with time, date and duration of power
cut. – Opening for installing a reference sensor.
It is essential to use these safety facilities to avoid damage to stored
items. These facilities must not be deactivated or decommissioned!
Climate rating
The climate rating indicates the room temperature at which the appliance may
be operated in order to achieve full refrigeration performance.
The climate rating is indicated on the type plate.
The position of the type plate is shown in the section entitled Description of
the appliance.
Climate rating
SN N ST T SN-ST SN-T
Room temperature
+10°C to +32°C +16°C to +32°C +16°C to +38°C +16°C to +43°C +10°C to +38°C
+10°C to +43°C
Do not operate the appliance outside the specified room temperature range.
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Safety instructions and warnings
· To prevent injury or damage to the unit, the appliance should be unpacked
and set up by two people.
· In the event that the appliance is damaged on delivery, contact the supplier
immediately before connecting to the mains.
· To guarantee safe operation, ensure that the appliance is set up and
connected as described in these operating instructions.
· Disconnect the appliance from the mains if any fault occurs. Pull out the
plug, switch off or remove the fuse.
· When disconnecting the appliance, pull on the plug, not on the cable.
· Any repairs and work on the appliance should only be carried out by the
customer service department, as unauthorised work could prove highly dangerous
for the user. The same applies to changing the mains power cable.
· Do not allow naked flames or ignition sources to enter the appliance.When
transporting and cleaning the appliance, ensure that the refrigerant circuit
is not damaged. In the event of damage, make sure that there are no ignition
sources nearby and keep the room well ventilated.
· Do not stand on the plinth, drawers or doors or use them to support anything
else.
· This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities or lack of experience and
knowledge unless they have been given initial supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
· Avoid prolonged skin contact with cold surfaces or chilled/frozen food.This
could cause pain, numbness and frostbite. In the case of prolonged skin
contact, protective measures should be taken, e.g. gloves should be worn.
· Do not consume food which has been stored for too long, as it could cause
food poisoning.
· Do not use electrical appliances inside the appliance.
· If you have a lockable appliance, do not keep the key near the appliance or
within reach of children.
GB
· The appliance is designed for use in enclosed areas. Do not operate the
appliance outdoors or in areas where it is exposed to splash water or damp
conditions.
· Do not install the appliance in the immediate vicinity of an air-
conditioning unit. The appliance should also not be operated under a wall-
mounted air-conditioning unit.
· The appliance is not suitable for storing drugs pursuant to DIN 58345.
· The appliance is not suitable for storing blood bottles pursuant to DIN
58371.
· The appliance is not suitable for storing blood plasma pursuant to DIN
58375.
· In special fields of application which are subject to their own standard,
the user is responsible for complying with this standard.
Setting up
· Avoid positioning the appliance in direct sunlight or near cookers,
radiators and similar sources of heat.
· The floor on which the appliance stands should be horizontal and level.
Compensate for uneven floors with the adjustable feet.
· Do not cover ventilation openings or grille.
· Standard EN 378 specifies that the room in which you install your appliance
must have a volume of 1 m3 per 8 g of R 600a refrigerant used in the
appliance, so as to avoid the formation of inflammable gas/air mixtures in the
room where the appliance is located in the event of a leak in the refrigerant
circuit.The quantity of refrigerant used in your appliance is indicated on the
type plate on the inside of the appliance.
Dimensions
LGUex 1500
LGex 3410
15
Electrical connection
Only operate the appliance with alternating current (AC). The permissible
voltage and frequency are indicated on the type plate. The position of the
type plate is shown in the section entitled Description of the appliance. The
socket must be properly earthed and protected by a fuse. The tripping current
of the fuse must be between 10 A and 16 A.
The socket must not be situated behind the appliance and must be easily
accessible.
Do not connect the appliance using an extension cable or extension socket.
Do not use stand-alone inverters (conversion of direct current to alternating
/three-phase current) or energy-saving plugs. Risk of damage to the electronic
control system!
Operating and control elements
1ON/OFF button (to switch the appliance on and off) 2Selection buttons 3Set
button (Enter) 4Audible warning on/off button 5Button for calling up stored
alarm events 6Temperature display
Switching the appliance on and off
Connect the appliance to the mains – the display reads OFF.
Switching the appliance on: Keep the ON/OFF button pressed for approx. 5
seconds – the display reads ON.
No alarm is displayed or sounded when the appliance is switched on for the
first time. If the appliance is disconnected from the mains for a long time
after it has been switched on for the first time and if the temperature inside
the appliance rises above the upper alarm limit, this will be detected as a
fault by the electronic control system (HACCP appears in the display).
When the appliance is switched on again, this display must be reset as shown
below.
Press button .
Press + for 5 seconds. The display will read
.
The HACCP LED will now light up permanently.
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Switching the appliance off: Keep the ON/OFF button pressed for approx. 5 seconds – the display reads OFF.
Setting the temperature
Control elements
Compressor is running
LED flashing – refrigeration unit switches on after a delay. The compressor
will start automatically after the pressure in the refrigerant circuit has
equalised. )
AUX Temperature display via product sensor is activated
Alarm function
If appears in the display, the appliance has a fault. Consult your nearest
customer service point.
HACCP (Hazard Analysis Critical Control Point) The HACCP display means that
the power supply and interior temperature of the appliance are recorded. If
HACCP flashes in the display, there has either been a power failure or the
temperature in the appliance exceeded the permissible range.
· Press button for 1 second. The temperature display flashes. · To increase
the temperature (warmer): press button . · To reduce the temperature (colder):
press button . · Press button again. The desired temperature setting is saved.
Adjustable temperature range LGUex 1500 from -9°C to -26°C LGex 3410 from -9°C
to -30°C
Audible warning signal
The audible warning signal will sound in certain alarm events. It can be
cancelled by pressing button .
Door open alarm
When the door is opened, the LED begin to flash.
and the temperature display
When the door has been left open for more than 60 seconds, the
LED begins to flash, and
and the temperature indication
flash alternately in the display.
The audible warning signal sounds (unless the audible warning signal function has been deactivated).
If the door has to stay open for longer in order to insert items to be cooled, cancel the audible warning signal by pressing button .
16
Setting the delay time for the door open alarm
The time before the audible warning signal sounds after the door has been
opened can be adjusted.
Press
for 5 seconds. Display =
GB
Audible warning signal settings
The audible warning signal will be muted for the current alarm after the
button has been pressed. Complete the following steps if you want the audible
warning signal to reactivate automatically.
Press
for 5 seconds. Display =
Display =
Display =
Display = Display =
Display = Display =
Display =
Display =
Display = (minute)
Display =
Setting range = 1 – 5 minutes
Display =
Use buttons and to select the desired setting. Display =
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Display =
Display = Automatic reactivation of the audible warning signal is now active.
The time before the audible warning signal sounds again must be set.
Display =
Deactivating the audible warning signal function
The audible warning signal function can be completely deactivated if
necessary.
Note In this case, the sentence stated in these operating instructions “The
audible warning signal sounds” must be skipped when reading the section in
question.
Press
for 5 seconds. Display =
Display =
Display =
Display =
Time in minutes after which the audible warning signal will sound again after the button has been pressed. Setting range = 1 – 120 minutes.
Use buttons and to select the desired setting.
Display =
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Display =
Use buttons and to select the desired setting. = audible warning signal function activated = audible warning signal function deactivated
Display =
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
17
Alarm messages
1. LED flashes
If appears in the display, the appliance has a fault. Consult your nearest
customer service point.
Adjusting the alarm parameters
The alarm limits (difference to the set temperature) and the alarm delay
(delay until alarm goes on) can be adjusted.
Press
for 5 seconds. Display =
2. LED flashes, the display reads HI or LO
The interior is too warm (HI) or too cold (LO).
The audible warning signal sounds (unless the audible warning signal function
has been deactivated).
Note The alarm parameters can be adjusted. See Adjusting the alarm parameters.
Display = Display = Display = Display =
3. HACCP flashes
There has been a power cut of some length or the interior was too warm or too
cold during a certain period of time. Up to three alarm events can be stored
and called up.
Display = Lower alarm limit Display = temperature difference in °C
Alarm test
This test checks the function of the internal and any external connected alarm
device.
The appliance does not stop its refrigerating function during this test.
Activating the test
Use buttons and to select the desired setting.
Display =
Display =
Upper alarm limit
Display = temperature difference in °C
Press
for 5 seconds.
· The display will change to a temperature value of 0.2°C below the set upper alarm limit.
· The temperature value will now rise by 0.1°C every 2 seconds.
· When the upper alarm limit is reached,
will appear in the
display. An external alarm unit connected to the floating alarm
output will now be activated.
Use buttons and to select the desired setting. Display = Display = Display = alarm delay in minutes
· The temperature value will continue to rise up to 0.2°C above the upper alarm limit.
· The same process will take place automatically for the lower
alarm limit.
will appear in the display.
Use buttons and Display =
to select the desired setting.
The LED will be lit during the test. The electronic control system will
automatically switch back to normal operating mode.
Cancelling the test prematurely
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Press
for 5 seconds.
Note
If the values of the upper and lower alarm limit (AL and AH in the
section entitled “Adjusting the alarm parameters”) are set to 0,
and
will appear in the display during this test.
18
GB
Calling up stored alarm events and reading Example of an alarm query
the temperature progression
Situation: HACCP flashes in the display.
Display =
Display =
Scroll through the list using or .
Number of temperature alarms Last temperature alarm Last temperature alarm but one Temperature alarm before Number of power cuts Last power cut Last power cut but one Power cut before Period in hours in which the maximum and minimum interior temperatures were measured Maximum (highest) measured temperature Lowest measured temperature
Select the required item using the again to return to the list.
button. Press this button
Note: You can exit the menu at any time by pressing seconds.
for 5
If no button is pressed within 60 seconds, the electronic control system switches back automatically.
Display = Display =
There has not been an alarm status with a too high or too low temperature. You must switch to display .
Press this button until
appears in the display.
Display = 1 power failure has occurred.
Display = Display = Display = Display = Display = Display = Display =
Last power failure. Year 2012 Month 05 (May) Day 30 Hour 23 Minute 14
Display =
The power failure lasted 3 hours.
Resetting the recorded temperature progression
Complete the following steps if you wish to reset the value saved for in the
previous section to 0.
Press + for 5 seconds. The display will read
.
The HACCP LED will now light up permanently. The electronic control system is now ready for the next alarm.
Display = Press the button or until appears in the display.
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Display = –
Press
for 5 seconds. Display =
.
The values for and (highest and lowest measured interior temperature) are then reset to the current interior temperature.
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
19
Calibrating the control sensor (standard sensor for
temperature control)
Possible tolerances of the control sensor (the displayed temperature compared
to the actual interior temperature) can be offset with this function.
Press
for 5 seconds. Display =
Display =
Display =
Display = correction value set at the factory
Use buttons or to increase or decrease the correction value in 0.1°C
increments.
Display = actual (corrected) interior temperature
Display =
Calibrating the product sensor
Possible tolerances of the product sensor (the set temperature compared to the
actual interior temperature) can be offset with this function.
Press
for 5 seconds. Display =
Display =
Display =
Display =
. Display =
Use buttons or to increase or decrease the correction value in 0.1°C increments.
Display = actual (corrected) product sensor temperature
Press
for 5 seconds.
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
The electronic control system will automatically switch back to normal operating mode.
Product sensor (available accessory)
The temperature may be measured or recorded at any point in the interior using
the product sensor. · Connect sensor (see section entitled External alarm)
Activating the sensor
Switching the temperature display between control sensor and product sensor
Press
for 5 seconds. Display =
Display = (control sensor)
Press
for 5 seconds. Display =
Display = (product sensor)
Display = Display =
If the product sensor is activated, AUX appears in the display.
Display =
Display =
Display =
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
If
appears in the display, the product sensor has not
been activated.
If
appears in the display, the product sensor has not been
connected, or is faulty.
20
Changing the network address
When connecting several appliances via the RS485 interface, each appliance
must have its own network address.
Press
for 5 seconds. Display =
Display =
Display =
Display =
GB
Setting the real time clock
The real time clock is preset (CET). Other time zones or summer/ winter time
must be adjusted manually.
Press
for 5 seconds. Display =
Display =
Display =
Year 2012
Display = Set the year by pressing the
buttons.
Display =
( Use buttons or to change the network address –
).
Display =
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
= save new setting
Display =
Month (1-12)
Display =
Set the month by pressing the buttons.
= save new setting
Display =
Day (1-31)
Resetting the parameters to factory settings
The alarm limits and sensor calibration values can be reset to the factory
settings using this function.
Pull out the mains plug.
Keep
pressed and connect the mains plug.
Display =
Display =
The electronic control system will automatically switch back to normal
operating mode.
Display = Set the day by pressing the
buttons.
= save new setting
Display =
Days of the week (1 = Monday, 7 = Sunday)
Display =
Set the day of the week by pressing the buttons.
= save new setting
Display =
Hour (0-23)
Display =
Set the hour by pressing the buttons.
= save new setting
Display =
Minute (0-59)
Display =
Set the minutes by pressing the buttons.
= save new setting
Press
for 5 seconds.
The electronic control system will automatically switch back to normal operating mode.
Note When reset.
appears in the display, the real time clock must be
21
Safety lock
The lock in the appliance door is equipped with a safety mechanism.
Locking the appliance: · Insert the key as shown by arrow
1. · Turn the key 90°.
To unlock the appliance, the same procedure must be repeated in the same
order.
Defrosting
After a longer period of operation a layer of frost or ice can build up on the
cooling plates in the freezer compartment.This will increase the energy
consumption of the freezer. The cooling plates should therefore be defrosted
regularly.
· To defrost, switch the appliance off. Pull out the mains plug. · Remove the
drawers. · Transfer items to other appliances. · To speed up the defrosting
process put a saucepan of hot but not
boiling water on one of the cooling plates. · Leave the door of the appliance
open while defrosting. After de-
frosting mop up the remaining water with a cloth and clean the appliance.
Do not use any mechanical devices or other artificial aids for defrosting
other than those recommended by the manufacturer.
Malfunctions
You may be able to rectify the following faults by checking the possible
causes yourself:
· Appliance does not function: Is the appliance switched on? Is the plug
correctly fitted in the mains socket? Is the fuse intact? · Loud running
noise: Is the appliance set up firmly on the floor? Does the appliance
cause nearby items of furniture or objects to
vibrate? Please note that noises caused by the refrigerant circuit cannot be
avoided. · The temperature is not low enough: Is the temperature setting
correct (see “Setting the temperature”)? Does the separately installed
thermometer show the correct reading? Is the ventilation system working
properly? Is the appliance set up too close to a heat source?
·
appears in the display:
Reset the real time clock (see “Setting the real time clock”).
If none of the above causes apply and you cannot rectify the fault yourself,
contact the nearest customer service department stating the type designa-
tion 1, service number 2and 3 appliance number as indi-
cated on the type plate.
The position of the type plate is shown in the section entitled Description of the appliance.
Cleaning
Before cleaning always switch off the appliance. Pull out the mains plug or
switch off or unscrew the fuse.
· Clean the inside, equipment and outer walls with lukewarm water and a little
detergent. Do not use abrasive or acid cleaners or chemical solvents.
Do not use steam cleaners because of the risk of injury and damage.
· Ensure that no cleaning water penetrates into the electrical components or
ventilation grille.
· The dust should be removed from the refrigeration unit and heat exchanger –
metal grid at the back of the appliance – once a year.
· Do not damage or remove the type plate on the inside of the appliance. It is
very important for servicing purposes.
Warning! Only clean plastic parts with a damp cloth!
Risk of electrostatic discharge.
Shutting your appliance down
If your appliance is to be shut down for any length of time, switch it off and
disconnect the plug or switch off or unscrew the fuse. Clean the appliance and
leave the door open in order to prevent unpleasant smells.
22
External alarm
We recommend connecting the appliance to an external alarm device.
There are various connection options at the back of the appliance.
The appliance may only be connected to an external alarm device by trained
personnel.
GB
Floating alarm output
These three contacts can be used to connect the appliance to an optical or
acoustic alarm device.
The connection is designed for a maximum of 42 V/8 A DC from a safety extra-
low voltage (SELV) source (minimum current: 150 mA).
Important When supplying mains voltage to the floating alarm contact, the
technical safety requirements of standard EN 60335 will not be satisfied.
Floating alarm output
N.O Alarm output Connection for a visual warning light or an acoustic alarm signal.
Connection to RS485 interface
N.C Operating light Connection for a control lamp to indicate that the appliance is in normal mode.
Optional temperature sensor connection
Terminating resistor When connecting several appliances via the RS485 interface, the terminating resistor must remain on the last appliance. Remove the terminating resistors from the appliances in between.
Note The connectors are secured with screws. To remove the connectors, undo the left and right screws.
COM External power supply unit 42 V/8 A DC maximum. Minimum current: 150 mA.
RS485 interface
Rx- / TxSend/Receive data cable (negative pole)
Rx+ / Tx+ Send/Receive data cable (positive pole)
GND Earth cable
23
Opening for external temperature sensor
Model LGUex 1500
Opening for external temperature sensor
Model LGex 3410
Remove upper drawer before beginning work.
1. Drill marked section on the back of the appliance.
The condenser must be unscrewed to make the sensor cable opening accessible.
1. Unscrew condenser screws (6 pcs.) and fold out condenser at an angle.
Important! Make sure that no pipes are bent.
2. Drill marked section at the back of appliance.
Important! Only drill the outer wall of the housing. Do not drill too far.
2. Pull out strain relief device (bottom left of interior container).
3. Pull out strain relief device (top left of interior container).
3. Feed sensor through opening and secure sensor cable with strain relief device.
4. Feed sensor through opening and secure sensor cable with strain relief device.
Important! Position the sensor at the top of the interior container. The sensor must not come into contact with objects so that only the air temperature is measured.
Important! Position the sensor at the top of the interior container. The sensor must not come into contact with objects so that only the air temperature is measured.
Important! 5. Close the sensor cable opening
at the back of the appliance with the sealant provided.
6. Screw condenser back on.
Important! 4. Close the sensor cable opening at the back of
the appliance with the sealant provided.
24
Changing over door hinges
1. Unscrew the hinge bracket. Important: The door mounting has a spring
mechanism enabling the door to close by itself. The hinge bracket turns to the
left when the screws are undone. 2. Pull the door out at the bottom
and lift off.
3. Transfer handle and plugs to the opposite side of the door.
GB
Installation dimensions (mm) LGUex 1500
Version 1 A cross-section of min. 200 cm2 is required in the worktop for
ventilation of the rear of the appliance.
4. Transfer pin on hinge bracket to the
opposite side.
5. Transfer upper hinge components to
the opposite side.
6. Transfer cover plate to the opposite
side.
7. Mount door on hinge pin and close.
8. Insert hinge bracket in lower door
mounting.
9. Turn hinge bracket by 90° – spring
is compressed. Screw on hinge bracket.
Version 2 If no ventilation grill is provided in the worktop, the recess must
be at least 860 mm high to ensure adequate heat dissipation to the front.
The appliance complies with the relevant safety regulations and EC Directives
2004/108/EC, 2006/95/EC and ATEX 94/9/EC (EN/IEC 60079-15, IEC 60079-0, EN
1127-1).
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