Nordic Lab ULT U250 User manual

GB Instructions for use
DE Bedienungsanleitung
FR Mode d’emploi
ULT / Low Temperature Freezers

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As the appliance contains a ammable
refrigerant, it is essential to ensure that the
refrigerant pipes are not damaged.
The quantity and type of the refrigerant
used in your appliance is indicated on
the rating plate.
Standard EN378 species that the room in
which you install your appliance must have
a volume of 1m³ per 8 g of hydrocarbon
refrigerant used in the appliances. This is
to avoid the formation of ammable gas/air
mixtures in the room where the appliance is
located in the event of a leak in the refriger-
ant circuit.
WARNING: Keep ventilation openings in
the appliance’s cabinet or in
the built-in structure clear of
obstruction
WARNING: Do not use other mechanical
devices or other means to ac-
celerate the defrosting process
than those recommended by
the manufacturer
WARNING: Do not damage the refrigerant
system
WARNING: Do not use electrical appli-
ances inside the refrigerated
storage compartment, unless
they are of a type recommend-
ed by the manufacturer
WARNING: Do not expose the appliance to
rain, and secure not splashing
water when cleaning the oor
WARNING: This appliance is not intended
for use by children or inrm
persons unless they have been
adequately supervised by a
responsible person to ensure
that they can use the appliance
safely. Children should be su-
pervised to ensure that they do
not play with the appliance
WARNING:If a not compatible USB pen
drive is used it can cause a
reset of the controller
See page 20
WARNING: Do not store explosives, such
as aerosol cans with ammable
propellants in the unit.
WARNING: Danger risk of re or explosion
if ammable refrigerant are
used. To be repaired only by
trained personnel.
WARNING: Sharp edges on cabinet, com-
pressor compartment, evapo-
rator, ventilation cover and on
internal equipment can occur.
Please be aware to avoid injury.
WARNING: The condenser on the back of
the appliance will in some cas-
es have a hot surface. Please
be aware to avoid injury.
● Always keep the keys in a separate place
and out of reach of children
●Do not step on the lower panel to reach
medicine in the top of the appliance.
Warning.

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Contents
Warning ..................................................2
Get to know your freezer ........................4
Before use. .............................................5
Electrical connection...............................5
Installation and start-up ..........................6
Battery backup system at start-up ..........8
Interior tting. ..........................................9
Operation and function .........................10
Chart Recorder. Operating instruction . . 19
Defrosting, cleaning and maintenance . 22
Fault nding ..........................................24
Warranty, sparepart and service.. .........25
Disposal. ...............................................26
● Before servicing or cleaning the appli-
ance, unplug the appliance from the
mains or disconnect the electrical power
supply
● If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent, or similarly qualied persons in
order to avoid a hazard
●Relevant for Australia: Supply cord
tted with a plug complies with AS/NZS
3112.
●Please note that changes to the appli-
ance construction will cancel all warranty
and product liability
● This device is intended to be used exclu-
sively for medical products.
●If the instructions is lost please contact
your supplier of the appliance to have a
new instruction for use.
● If service needed to this device, please
be aware of only using service person-
nel with education in handling medical
devices.

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Keyboard
Light
Door switch
Rating plate
(on the backside)
Shelf
Double door gasket
Door handle
Two internal doors
Chart recorder
(optional)
Adjustable feet
(Only some models)
Wheels with brakes
Get to know your ULT/Low Temperature freezer

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Before use
Before operating your new appliance, please
read the following instructions carefully as
they contain important information on safe-
ty, installation, operation and maintenance.
Keep the instructions for future reference.
On receipt, check to ensure that the appli-
ance has not been damaged during trans-
port. Transport damage should be reported
to the local distributor before the appliance
is put to use.
The foil on the shelves must be removed
before cleaning and before using the unit.
Clean the inside of the cabinet using warm
water with a mild detergent. Rinse with clean
water and dry thoroughly (see cleaning in-
structions). Use a soft cloth.
If during transport the appliance has been
laid down, or if it has been stored in cold sur-
roundings (colder than +5°C), it must be al-
lowed to stabilise in an upright position for
at least an hour before being switched on.
Note: If the appliance is to be laid down, the
door must face upwards and the appliance
must be enclosed in the original packaging.
Electrical connection
Wiring and connections in power supply
systems must been all applicable (local and
national) electrical codes. Consult these
codes lengths and sizes prior to cabinet
installation.
This device complies with relevant EU
directives including Low Voltage Directive
2006/95 EEC. and Electromagnetic Com-
patibility Directive 2004/108/EC
The socket should be freely accessible.
Connect the appliance only to 220/240 V
/ 50Hz alternating current via a correctly
installed earthed socket.
The socket must be fused with a 10 A or
13A fuse.
If the appliance is to be operated in a non-
European country, check on the rating plate
whether the indicated voltage and current
type correspond to the values of your mains
supply.
Data regarding voltage and obsorbed
power / current are given on the rating
plate.
The power cord may be replaced by a
technician only.
The rating plate provides various techni-
cal information as well as type and serial
number.
Product number
g. 1

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Placement
For safety and operational reasons, the ap-
pliance shall not be exposed to rain.
The appliance should be placed on a level
surface in a dry, well ventilated room (max.
70% relative air humidity). Never place the
appliance close to sources of heat and avoid
placing it in direct sunlight.
The surface on which the appliance is to be
placed must be level. Do not use a frame or
similar.
The appliance can be installed as a free-
standing unit against a wall or side-by-side
with other appliances (see g. 5 on page 7)
Room temperature
The climate class is stated on the name
plate. This species the optimum room
temperature.
The appliance operates best at room tem-
peratures:
Model Optimum room tem-
perature
ULT U250 -86°C +16 ºC to +20 ºC
XLT U250 -60°C +16 ºC to +25 ºC
LT U250 -45°C +18 ºC to +25 ºC
Ventilation
Keep ventilation openings, in the appliance
enclosure or in the built-in structure, clear
of obstruction. The gures below illustrate
the clearance necessary to achieve the
required air circulation. Fig 2
(Minimum 150 mm rear)
Installation and start-up
g. 2
Moving the unit
Unlock brakes on wheels.
Before moving the unit, ensure that the
door is closed and locked. When moving
the unit, always face the door and take
a rm grip on either side of the door as
shown. Fig 3
When the unit is installed, lock all the
wheels (those that can be locked) and keep
them locked until the unit shall be moved. g. 3

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Side by side
In side-by-side arrangement, there must be
at least 25 mm between and at the sides of
the cabinets, so the doors can be opened
freely (See g. 5)
Levelling the appliance
It is important that the appliance absolutely
level.
If the appliance is to be placed on a soft sur-
face, e.g. oorboards or a carpet, it is best to
recheck whether the appliance is still level af-
ter a period of time as the underlying surface
may yield under the weight of the appliance.
Some models have adjustment feets.
(See g 4)
g.5
g.4
Daily use
Please always wear gloves due to the very
low temperatures inside the unit.
Always thoroughly remove defrosted ice/
water on the front of the cabinet before
closing the doors to prevent the gasket from
freezing the door and cabinet together.
Installation of ventilationguard
Close the two ventilationguards placed on
the rear of the appliance, to ensure suf-
cient air circulation (See g. 6)
g. 6

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1. Open the door
2. Use a pen to switch on the battery backup
system in the hole shown on g. 7
3. When turned on the switch it will have a
green light
NOTE!
The battery back up system does not supply
the cooling system with power to run.
When starting up the appliance for the rst
time it is necessary to switch on the battery
back up system.
g. 7
Battery backup system at start-up
Some models are equipped with a battery back up system.
Battery backup system
Some models are equipped with a battery back up system. The system supplies the controller
and keyboard with power at power failure. This makes it possible to supervise the tempera-
tures in the unit during the power failure.
The battery backup system makes it possible to supervise the temperatures for 50 hours.
After a power failure and at the rst start up the battery needs to be recharged. To regain the
full capacity the battery will be reloading for 10 days
NOTE!
The battery for back up should be changed
every third year to secure 48 hours of back
up. Please put this change in the mainte-
nance schedule for every third year.

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Shelves
The shelves can be repositioned. To re-
move the shelves the door must be opened
at least 90°.
1. Remove shelf brackets from shelf rails.
2. Replace shelf brackets in desired posi-
tion (See g. 8)
Interior tting
max. 15kg
g.8
The foil on the shelves must be removed
before cleaning and before using the unit

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Operation and function
Start up:
When the appliance is connected to the power supply, the keyboard will automatically start up.
The start up view on the keyboard will show the different software installed on the controller of
the appliance.
Press enter to return from the start up view.
Operation – main view:
(1) The temperature in the appliance (measured by the TR3 probe)
(2) Time and date
(3) ALARM icon. Flashing by alarm. On when there has been an alarm, but the alarm is no
longer active.
(4) Logging icon. Of if no logging. On when logging
(5) Memory icon. On when the memory is 90% full. Flashing when the memory is full, and the
controller is deleting the oldest logging data.
(6) Memory bar. Shows the status of the memory.

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Keys – main view:
SET: Enter the Set Point menu of the temperature
SERVICE: Enter the Service menu
DATA: Enter the Data Logging menu
ALARM: Enter the Alarm menu
How to see and modify the temperature Set Point:
1. Push and immediately release the SET key: the display will show the Set Point value.
2. To modify the value push the SET key, the Set Point start ashing.
3. Use the UP and DOWN keys to modify the value.
4. To memorize the new Set Point value push the SET key again or wait 30sec.
Operation and function

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Service menu:
From the main view push the SERVICE key and the SERVICE menu is entered.
See below picture:
PROBES: Enter the probes, to see the measured temperatures. 1-4 probes is availa
ble depending on model.
PARAMETERS: Enter the setting of the parameters. Please note that changes made to the
parameters should only be made of a technician. The code to enter the Pr2
parameters is standard set to 12.
SELF TEST: Enter the Self Test program of the controller.
CLOCK: Enter clock menu, where it is possible to change date and time.
PASSWORD: Enter the password menu, where it is possible to change the password.
LANGUAGE: Enter the language menu, where it is possible to change language.
How to set time and date:
1. Enter the SERVICE menu
2. Select CLOCK sub-menu
3. Push the ENTER key.
4. Set the day by means of the UP and DOWN keys.
5. Push the SET key, to conrm and pass to the setting of time.
6. Use the same procedure as for the date.
7. Then conrm the selection by means of the SET key.

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How to use the Self Test:
1. Enter the SERVICE menu
2. Select SELF TEST sub-menu
3. Push the ENTER key,
4. If PASSWORD is required, insert the password,
5. OTHERWISE the SELF TEST menu is entered directly.
6. Push the START key
7. Then push the keys to activate the correspondent loads:
a. Compressor
b. Light
c. Fan
d. Alarm
e. Buzzer
8. The display shows the status of the digital input (ON or OFF)
9. Wait 30s or push the BACK key to come back to the previous screen.
How to change language:
1. Enter the SERVICE menu
2. Select LANGUAGE sub-menu
3. Push the ENTER key and the LANGUAGE menu is entered.
4. Push the SET key and then use the UP and DOWN keys to select the language and then
the SET key to conrm it.

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Data menu:
From the main view push the DATA key and the DATA menu is entered.
See below picture:
LOG: Enter the data logged by the controller.
EXPORT: Export the data to an USB pen drive delivered with the appliance.
GRAPH: Enter the graph showing the temperature logged the last 24h (with a logging inter-
val of 15min.)
How to enter the log:
1. Enter the DATA menu
2. Select LOG sub-menu
3. Push the ENTER key and the LOG menu is entered.
4. By UP and DOWN keys chose the data interval to display
5. Push the ENTER key to display the selected data.
NOTE: THE KEY: IS USED TO STOP AND START LOGGING

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Logged data will have this layout:
Where TR3, EVP, TL1, TL2 = Value of probes.
With probe failure or absence:” - “ symbol is displayed. Please note that 1-4 probes are avai-
lable depending on model.
ST: status of the controller/load
● - = operating, without any load activated;
● D = defrost running (if automatic defrost is available)
● C = compressor working
How to export data:
1. Enter the EXPORT menu
2. Insert the USB pen drive supplied by Nordic Freeze.
3. Select ALARM or DATA, the controller starts sending data to the pen drive, when
the export is nished the message: EXPORT - Copy completed is displayed.
The exported data will be exported as a CSV-le (Comma Separated Values). This le can be
used in ex. Excel for making graphs.
IMPORTANT: during the download don’t remove the USB pen drive: this action could
damage the data les and USB pen drive itself.
WARNING: leave the USB pen inserted only for the time necessary to export data then
remove.
WARNING: if a not compatible USB pen drive is used it can cause a reset of the con-
troller

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How to enter the Graph:
1. Enter the DATA menu
2. Select GRAPH sub-menu
3. Push the ENTER key and the GRAPH menu is entered.
4. By UP and DOWN keys chose the probe that has to be displayed.
5. Push the HOME key to get back to the main view.
NOTE: A graph is erased when the controller is switched off.
Alarm menu:
If the alarm icon is ashing on the main display, an alarm is occurring.
If the alarm icon is displayed but not ashing on the main display, an alarm is occurred and
recovered.
Once the alarm signal is detected the buzzer can be silenced by pressing any key.
Active alarms:
1. Push the ALARM key to enter the alarm menu.
2. The alarm menu displays the active alarm with the following layout:
a. First column = alarm code
b. Second column = alarm description

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3. Push the LOG button to enter the ACTIVE ALARM LOG.
This menu contains all the information concerning the active alarms. In the rst line, it is
displayed how many alarms are happening.
4. It’s possible to move through the alarms by the UP and DOWN keys.
5. Push the LOG button to enter the ALARM LOG. This menu contains all the memorized
alarms. For each alarm the starting time and date and the nish time and date are recorded.

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“P1” Regulating probe TR3 failure Alarm output ON; Compressor output according
to parameters Con and CoF
“P2” EVP Probe Failure Alarm output ON; Other outputs unchanged
“P3” Logging probe TL1 failure Alarm output ON; Other outputs unchanged
“P4” Logging probe TL2 failure Alarm output ON; Other outputs unchanged
“HA1” TR3 High Alarm Alarm output ON; Other outputs unchanged
“LA1” TR3 Low Alarm Alarm output ON; Other outputs unchanged
”HA3” High temperature alarm probe
TL1
Alarm output ON; Other outputs unchanged
”LA3” Low temperature alarm probe
TL1
Alarm output ON; Other outputs unchanged
”HA4” High temperature alarm probe
TL2
Alarm output ON; Other outputs unchanged
”LA4” Low temperature alarm probe
TL2
Alarm output ON; Other outputs unchanged
“dA” Door Open Alarm Compressor and fans depend on “rrd”
“EA” External Alarm Output unchanged
“CA” Serious Alarm All outputs OFF
”Real Time Clock Error”. Please set the date and time. See page 12

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Chart Recorder
Operating instruction
Maintenance:
● Regularly replace the chart and the bre point pen.
● Replace the alkaline battery every year.
Putting into operation
1. Open the door with the key.
2. Lift the steel pen (3) into upright position
away from the chart (7).
3. Push the chart holder (6) sideways and
lift it up, and remove the chart (7)
4. Remove the plastic strip to activate the
battery.
5. Reinstall the chart (7), lower the chart
holder (6), and push it sideways.
6. Lower the steel pen carefully (3).
7. Turn the chart manually in correct
starting point and note the date on the
chart.
It is advisable to wait almost 6 hours
to see the trail of the bre point pen
on the chart.
8. Remove the protection of the pen-nib.
9. Close the door with the key.
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6
6

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Substituting the ber tipped pen
1. Pull out the bre pen (4) taking care not to
damage the pen.
2. Gently place the new bre pen on the pen
arm.
Substituting the chart
1. Push the chart holder (6) sideways and
lift it up.
2. Remove the chart (7).
3. Insert the new chart.
4. Lower the chart holder (6) and push it
sideways.
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3
7
3
3
4
5
4