LIEBHERR LGex 3410 Fridge Instruction Manual

Linx 3410 Fridge
Instruction Manual

Original operating instructions
Freezer with explosion-proof interior container
Read the operating instructions before switching on for the first time

Priority of warnings

DANGER identifies a situation involving direct danger that, if not obviated, may result in death or severe bodily injury.
WARNING identifies a dangerous situation that, if not obviated, may result in death or severe bodily injury.
CAUTION identifies a dangerous situation that, if not obviated, may result in minor or medium bodily injury.
NOTICE identifies a dangerous situation that, if not obviated, may result in damage to property.
The note identifies useful information and tips.

Safety instructions and warnings

– WARNING:onlyusethemechanical devices or other aids recommended by the manufacturer to help speed up the defrosting process.
– WARNING: do not damage the refrigerant circuit.
– WARNING: do not use any electrical devices in the refrigerator compartment which do not comply with the design recommended by the manufacturer.
– WARNING: the mains cable must not be damaged while installing the appliance.
– WARNING: multi-sockets or distributor strips and other electronic devices (such as halogen transformers) must not be positioned and operated at the rear of appliances.
– WARNING: This appliance must be secured as described in the operating instructions to rule out any potential risks due to its instability.
– This appliance can be used by children of 8 years old and over, and also by persons with restricted physical, sensory or mental capacity or lack of experience and knowledge if they are supervised or have been instructed on safe use of the appliance and understand the resulting risks. Children must not be allowed to play with the appliance. Cleaning and user maintenance must not be carried out by children without supervision.
– To prevent injury and damage to property, the appliance should only be installed by two people.
– After unpacking it, check the appliance for signs of damage. Contact the supplier if it is damaged. Do not connect the appliance to the main power supply.
– Avoid prolonged skin contact with cold surfaces (e.g. chilled/frozen products). If necessary, take safety action (e.g. gloves).
– All repairs and work on the appliance may only be carried out by customer service personnel or other trained personnel. The same applies to changing the main power cable.
– Only carry out repair and other work on the appliance when the mains plug has visibly been disconnected.
– Only install, connect and dispose of the appliance as described in these operating instructions.
– In the event of a fault, pull out the plug or switch off the fuse.
– When disconnecting the appliance from the mains, pull on the plug. Do not pull on the cable.
– Do not allow naked flames or ignition sources to enter the appliance.

Symbols on the appliance

The symbol can be located on the compressor. It refers to the oil in the compressor and indicates the following danger: swallowing or inhaling can be fatal. This is only relevant for recycling. There is no danger in normal operation.
Warning about inflammable substances.
A sticker to this effect may be applied to the rear of the appliance. It refers to the foam-padded panels in the door and/or the housing. This is only relevant for recycling. Do not remove the sticker.

Intended use

This appliance has an interior free of ignition sources for professional use and is suitable for storing highly inflammable products in sealed containers at temperatures between -9°C and -26°C.
The interior is licensed as a Zone 2 hazardous area under 2014/34/ EU (ATEX Directive).
Typical products for storage include research samples, reagents, laboratory inventory, etc. which are classed in explosion group IIB+H2 and temperature class T6 under 2014/34/EU (ATEX Directive).
The explosion group is shown on the safety data sheet of the product for storage. If you are uncertain, contact the supplier of the product.
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.

Foreseeable incorrect use
Do not use the appliance for the following applications:

• Storage and cooling of – chemically unstable – blood, plasma, or other bodily fluids for the purposes of info sion, application, or insertion into the human body.
• Use in potentially explosive atmospheres.
• Use outdoors or in areas where it is exposed to splash water or damp conditions. Incorrect use of the appliance will result in damaging or spoiling the goods stored in it.

Declaration of conformity
The refrigerant circuit has been tested for leaks. The appliance complies with the relevant safety regulations and EU Directives 2006/42/EG, 2014/30/EU, 2009/125/EG and 2011/65/EU.
Noise emissions from the appliance
The noise level while the appliance is operating is below 70 dB(A) (relative noise level 1 pW).
Climate rating
The climate rating indicates at what room temperature the appliance may be operated to achieve full cooling capacity and what the maximum humidity level in the area around the appliance may be to ensure that no condensation forms on the exterior housing.

The climate rating is indicated on the type plate.

The minimum room temperature at the place of installation is 10°C.

Description of the appliance

1. Operating and control elements
2. Type plate
3. Drawers
4. Adjustable-height feet

NOTICE
The maximum load per drawer is 20 kg.

Other features

– Audible and visual temperature alarm.
– 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 temperatures are stored.
– Last 3 temperature alarms are saved with the time, date, and duration of the alarm.
– Last 3 power cuts are saved with the time, date, and duration of a 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!
Setting up

• Do not place the appliance in direct sunlight or near radiators and similar sources of heat.
• 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.
• Always install the appliance directly against the wall.

Leveling the appliance
Compensate floor unevenness using the adjustable feet.NOTICE
The appliance must be aligned horizontally and vertically. If the appliance is not level, the main body of the appliance can be deformed and the door will not close properly.
Appliance dimensions

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 current/three-phase current) or energy-saving plugs. Risk of damage to the electronic control system!
Operating and control elements

On/Off button (switching the appliance on and off)
Selection buttons
Keypad lock
Button for calling up stored alarm events
Audible alarm Off button
Enter button
Symbols in the display
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 equalized.
Temperature display via product sensor is activated
LED flashing and appears in the display. The real-time clock must be reset.
H The H display means that the power supply and interior temperature of the appliance are recorded.
If flashes in the H display, there has either been a power failure or the temperature in the appliance exceeded the permissible range.
Alarm function
The appliance has suffered a fault. Contact the customer service department.

Switching the appliance on and off
Connect the appliance to the mains. Display = OFF.
Switching the appliance on
Press for approx. 5 seconds. Display = 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 ( H flashes in the display).
When the appliance is switched on again, this display must be reset as shown below.
Press.
Press for 5 seconds. Display = The LED will now light up permanently.
Press for 5 seconds.
The H electronic control system will switch back to normal operating mode.
Switching the appliance off
Press for approx. 5 seconds. Display =OFF
Setting the temperature
Press for 1 second. The temperature display flashes.
To increase the temperature (warmer): press button.
To reduce the temperature (colder): press button.
Press again.
The desired temperature setting is saved.
Note The temperature in the warmest area of the interior may be higher than the temperature setting.
If the door is left open for a lengthy period, the temperature in the appliance’s compartments may rise dramatically.

Temperatur display mode
The temperature display can be switched between degrees Celsius and degrees Fahrenheit. The factory setting is degrees Celsius.
Press for 5 seconds. Display
PressDisplay =
Use the button or select the desired setting.
0 = °C 1 = °F
Press Display
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.

Door open alarm
When the door is opened, the LED lights up, and the temperature display begins to flash.
When the door has been left open for more than 60 seconds, the LED begins to flash, and the temperature indicator flashes 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 a button.
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 =
Press until appears in the display.
PressDisplay =
Setting range = 1 – 5 minutes.
Use the button or to select the desired setting.
Press  Display =
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.
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
Press until appears in the display.
Press Display =
Press Display =
Press Display =
Automatic deactivation of the audible warning signal is now active.
The time before the audible warning signal sounds again must be set.
Press Display =
PressDisplay = I
Setting range = 1 – 120 minutes.
Use the button or select the desired setting.
Press Display =
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.
Deactivating the audible warning signal function
The audible warning signal function can be completely deactivated if necessary.
Press for 5 seconds. Display =
Press until appears in the display.
Press Display =
Use the button or select the desired setting.
0 = audible warning signal function activated
1 = audible warning signal function deactivated
Press Display
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.
Alarm test
This test checks the function of the internal and any externally connected alarm device.
The appliance does not stop its refrigerating function during this test.
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, HIO will appear on the display. An external alarm unit connected to the floating alarm output will now be activated.
• 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. LIO will appear in the display.
  The LED will be lit during the test.
  The electronic control system will switch back to normal operating mode.

Canceling the test prematurely
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.
Note For a realistic temperature alarm test, an additional delay time (60 minutes) applies as well as the adjustable alarm parameters AL, AH and Ad. After a door has been opened or a defrosting process, the alarm delay Ad will be extended by an additional delay time (60 minutes). This additional delay time must not be changed. This means that a temperature alarm will appear later after a door has been opened or a defrosting process is actually set using parameter Ad.

Alarm messages

1. LED flashes in the display
   If appears in the display, the appliance has a fault. Consult your nearest customer service point.
2. LED flashes in the display; 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.
3. HA / HF/H flashes in the display
   There has been a power cut (HF) of some length or the interior was too warm or too cold (HA) during a certain period of time. Up to three-alarm events can be stored and called up.

Adjusting the alarm parameters
The alarm limits (difference to the set temperature) and the alarm delay (delay until alarm sounds) can be adjusted.
Note
After a door has been opened or a defrosting process, the alarm delay Ad will be extended by an additional delay time (60 minutes). This additional delay time must not be changed. This means that a temperature alarm will appear later after a door has been opened or a defrosting process is actually set using parameter Ad.
Press for 5 seconds. Display =
Press until appears in the display.
= Lower alarm limit
PressDisplay = temperature difference in °C
Use a button or to select the desired setting.
Set positive values only.
PressDisplay =
Press Display Upper alarm limit
Press Display = temperature difference in °C
Use the button or select the desired setting.
Set positive values only.
Press Display =
Press Display =
Press Display = alarm delay in minutes
Use the button or to select the desired setting.
PressDisplay
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.
Calling up stored alarm events and reading the temperature progression
PressDisplay =
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 button. Press this button again to return to the list.

Select the required item using the  button. Press this button again to return to the list.
You can exit the menu at any time by pressing for 5 seconds.
If no button is pressed within 60 seconds, the electronic control system switches back automatically.
Resetting the stored alarm events Han
PressDisplay
Press + for 5 seconds. Display 
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.
Resetting the recorded temperature progression rt
Press Display =
Press the button or until appears in the display.
PressDisplay
Press for 5 seconds. Display .
The values for rH and rL (highest and lowest measured interior temperature) are then reset to the current interior temperature.
Press for 5 seconds. The electronic control system will switch back to normal operating mode.

Example of an alarm query
Situation: HA/HF/ H flashes in the display.
Press Display
PressDisplay =
There has not been an alarm status with a too high or too low temperature. You must switch to display .
PressDisplay =
Press until appears in the display.
Press Display = 1 power failure has occurred.\
Press Display =
Press . Display = Last power failure.
Press Display =(year)
Press Display = (month 1-12)
Press Display = (day 1-31)
Press Display = (hour 0-23)
Press Display = (minute 0-59)
Press Display = (period of time in minutes)
Press + for 5 seconds. Display

The LED will now light up permanently.
HA/HF /H is canceled in the display.
The electronic control system is now ready for the next alarm.
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.

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 =
Press until appears in the display.
Press. Display = correction value set at the factory
Use a button to increase or decrease the correction value in 0.1°C increments.
Press. Display = actual (corrected) interior temperature
Press. Display =
Press for 5 seconds.
The electronic control system will 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 the section entitled External alarm)

Activating the sensor

Press .for 5 seconds. Display =
Press . Display =
Press . Display =
Press . Display =
Press . Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.
If – – – appears in the display, the product sensor has not been activated.
If E2 appears in the display, the product sensor has not been connected or is faulty.

Calibrating the product sensor

Possible tolerances of the product sensor (the displayed temperature compared to the actual interior temperature) can be offset with this function.

Press for 5 seconds. Display =
Press until appears in the display.
Press. Display =
Use a button or to increase or decrease the correction value in 0.1°C increments.
Press . Display = actual (corrected) product sensor temperature
Press . Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.

Switching the temperature display between the control sensor and the product sensor

Press for 5 seconds. Display =
Press until appears in the display.
Press . Display = (control sensor)
Press . Display = (product sensor)
If the product sensor is activated, appears on the display.
Press . Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.

Keypad lock

The keypad lock ensures that no unintentional changes are made to the electronic control system.

Setting a PIN code for the keypad lock function

Press for 5 seconds. Display =
Press until appears in the display.
Press. Display =
Use the button or choose a PIN code between 1 and 999.
Press . Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.

Activating the keypad lock
Press for 5 seconds. Display =
Use the button or select the PIN code.
Press. Display =
All buttons except and are locked.

If an incorrect PIN code is entered, the electronic control system switches back to normal operation without activating the keypad lock.

Deactivating the keypad lock
Press for 5 seconds. Display =
Use the button or select the PIN code.
Press . Display =
All functions are enabled.
If an incorrect PIN code is entered, the keypad lock remains active.

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 =
Press until appears in the display.
Press. Display =
Use the button to change the network address (1-207).
Press . Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.

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 =
Press . Display =

The electronic control system will switch back to normal operating mode.

Setting the real-time clock

The real-time clock is preset (CET). For a different time zone, the time must be adjusted manually.

Press for 5 seconds. Display =
Press . Display =
Press . Display = (year)
Press . Display =
Set the year by pressing the buttons. Press .
Press . Display = (month 1-12)
Press . Display =
Set the month by pressing thebuttons. Press .
Press. Display = (day 1-31)
Press. Display =
Set the day by pressing the buttons. Press.
Press . Display = (days of the week)
(1 = Monday, 7 = Sunday)
Press . Display =
Set the day of the week by pressing the buttons. Press.
Press. Display = (hour 0-23)
Press. Display = 
Set the hour by pressing the buttons. Press.
Press . Display = (minute 0-59)
Press . Display =
Set the minutes by pressing thebuttons. Press .
Press for 5 seconds.
The electronic control system will switch back to normal operating mode.

When appears in the display, the real time clock must be reset.

Conversion from summer to wintertime
Conversion to summertime is carried out automatically by the electronic control system on the last Sunday in March at 2 o’clock in the morning.
Conversion to wintertime is carried out automatically by the electronic control system on the last Sunday in October at 2 o’clock in the morning.
In order to enable the new time, the appliance must be switched off and on after each of the times specified above.

Enabling/disabling automatic conversion from summer to wintertime

Press for 5 seconds. Display =
Press until appears in the display.
Press. Display =
Use the button or select the desired setting.
0 = deactivated 1 = activated
Press. Display =
Press for 5 seconds.

The electronic control system will switch back to normal operating mode.

Safety lock
The lock-in 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.
• Leave the door of the appliance open while defrosting. After defrosting mop up the remaining water with a cloth and clean the appliance.

Cleaning
WARNING
Before cleaning, always disconnect the appliance from the mains. Pull out the plug or switch off the fuse.

WARNING
Risk of electrostatic discharge.
Only clean plastic parts with a damp cloth!

CAUTION
Risk of damage to the appliance components and risk of injury due to hot steam.
Do not use steam cleaning equipment to clean the appliance.

NOTICE
All surfaces in the appliance must be cleaned at regular intervals!

• Clean the inside, equipment parts, and outer walls with lukewarm water and a little detergent. Do not use chemical solvents or any cleaning agents containing sand or acid.
• To avoid short-circuits, ensure no cleaning water penetrates into the electrical components when cleaning the appliance.
• Dry all parts well with a cloth.
• 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.

Disposal notes
The appliance contains reusable materials and should be disposed of properly – not simply with unsorted household refuse. Appliances that are no longer needed must be disposed of in a professional and appropriate way, in accordance with the current local regulations and laws.

Do not damage the refrigerant circuit of an appliance that is no longer needed during its disposal.
This appliance contains inflammable gases in the refrigerant circuit and insulation foam.
Your local council or a waste disposal contractor can provide information about how to dispose of the appliance correctly.

Shutting your appliance down
If the appliance is left empty for a lengthy period, it must be switched off, defrosted, cleaned and dried and the door is to be left open to prevent mold formation.

Malfunctions
You may be able to rectify the following faults by checking the possible causes yourself:

• The appliance does not function:
  – Is the appliance switched on?
  – Is the plug correctly fitted in the main socket?
  – Is the fuse intac