Gram BAKER SF 950 User manual

765041791 Rev. 002 1
GRAM BAKER SF 950 / SF 950plus
User manual
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765041791 Rev. 002 2
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Gram Commercial A/S
Aage Grams Vej 1
6500 Vojens
[phone]
www.gram-commercial.com

765041791 Rev. 002 3
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Contents
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Application .............................................................................................................................................................. 4
Safety information ................................................................................................................................................... 5
Location .................................................................................................................................................................. 6
General description ................................................................................................................................................. 8
Electrical connection ............................................................................................................................................... 9
General use .......................................................................................................................................................... 10
Commissioning ...................................................................................................................................................... 12
Connection, display and loading of the software ................................................................................................... 13
Initial defrosting of the evaporator (connection when the unit is cold) ................................................................... 14
Storage program (connection when the unit is warm) .......................................................................................... 14
Display of the setpoint (temperature setting) in the storage program .................................................................... 15
Setting of the setpoint (temperature setting) in the storage program .................................................................... 15
Time-controlled cooling "HCL" .............................................................................................................................. 16
Temperature-controlled cooling (Hard Chill) ......................................................................................................... 17
Temperature-controlled cooling (Soft Chill) ........................................................................................................... 18
Thawing program .................................................................................................................................................. 19
Manual defrosting of the evaporator ...................................................................................................................... 19
Automatic defrosting of the evaporator ................................................................................................................. 19
The user menu ...................................................................................................................................................... 20
Dry cooling ............................................................................................................................................................ 21
Alarm and error messages on the display ............................................................................................................. 21
Deleting alarm messages ...................................................................................................................................... 22
Door monitoring ..................................................................................................................................................... 23
Cleaning the condenser filter ................................................................................................................................ 23
Reminder of cleaning the condenser air filter:................................................................................................... 23
Resetting the FILTER alarm after cleaning the condenser filter: ....................................................................... 23
Defrost water ......................................................................................................................................................... 24
Door closing mechanism ....................................................................................................................................... 25
Power failure ......................................................................................................................................................... 25
Cleaning ................................................................................................................................................................ 25
Door gaskets ......................................................................................................................................................... 26
Long term storage ................................................................................................................................................. 26
Service .................................................................................................................................................................. 27
Disposal ................................................................................................................................................................ 28
EC-Declaration of conformity ................................................................................................................................ 29
Wiring diagram SF 950 ......................................................................................................................................... 30
Wiring diagram SF 550 ..................................................................................... Fejl! Bogmærke er ikke defineret.
Piping diagram ...................................................................................................................................................... 32
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765041791 Rev. 002 4
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ENGLISH
Thank you for choosing a quality product from Gram Commercial.
This manual will advise you how to install, use and maintain your new product.
Before our products leave the factory, they undergo a full function and quality test. Should
you nevertheless experience problems with the product, then contact your local dealer.
Gram Commercial subsidiaries and dealers placed all over the world are ready to help you.
Gram Commercial supplies warranty on all products.
This warranty is subject to correct use according to specifications, where e.g. common
maintenance and eventual repairs are carried out by Gram Commercial techicians or
technicians approved by Gram Commercial.
Changes in installation and other use of the procuct than prescribed in this manual, might
affect the operation and durability of the product.
The manual is written according to our current technical knowledge. We constantly work on
updating this information, and we reserve the right to make technical changes.
Application
This product is designed for storage of foodstuff at a constant temperature. The product may
not be used for chilling or freezing of foodstuff.
The product is only to be used for the purpose for which it has been expressly designed
(storage of cooled or frozen items). Any other use could cause that the products stored in the
product are not kept at the right temperature.
The manufacturer will not be held liable or responsible for any damage caused by improper,
incorrect or unreasonable use.
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765041791 Rev. 002 5
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Safety information
Important
Description of symbols used in this manual.
Warning
Lacking observation to these instrucions might result in accidents with
personal injury.
Important If these instructions are not observed, the product might be damaged or
destroyed.
Be aware that Gram Commercial has taken precautions to ensure that the safety of the
product is in order.
Please read carefully the following information regarding safety.
It is important, that everyone who are to use or install the product, to have access to
this manual.
This appliance is not intended for use by persons with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been
given supervison 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.
The appliance might contain parts with sharp edges in the compressor
compartment, and in the inside compartment.
The appliance is not to be transported on a sack truck, there is a danger of loosing
the balance, causing danger to persons.
Do not pull the power cord to dicconnect the appliance, or when moving the
appliance.
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765041791 Rev. 002 6
Location
When receiving the product, check the packaging material for damage.
If any damage occurs at the packaging material, it should be considered if the product might
have been damaged too. If the damage is substantial, please contact your dealer.
The transport pallet can be removed by loosening the screws that fasten the pallet to the
product.
This task requires at least 2 persons.The heaviest part of the product is at the top.
Be aware of this, when removing the transport pallet.
Fig.1
If the cabinet has been transported in horizontal position it must stand upright at
least 2 hours before it is started to allow the oil from the compressor to run back.
Because of the heavy weight of the product, the floor might be damaged or
scratched when moving the product.
Correct set up gives the most effective operation.
The product should be located in a dry and adequately ventilated room.
To ensure efficient operation, it may not be placed in direct sunlight or against
heat-emitting surfaces. The product is designed to operate in an ambient
temperature between +16C and +40°C.

765041791 Rev. 002 7
Avoid placement of the product in a chlorine/acid-containing environment
(swimming bath etc.) due to risk of corrosion.
The product and parts of the interior is equipped with a protecting film, which
should be removed before use.
Clean the product with a mild soap solution before use.
The set up place must be level and horizontal.
For versions with legs, use the adjustable legs to make sure that the product stands
level and upright.
For versions with castors, the locking devices of the two front castors must be activated,
when the product is in place. The base must be level, and the product may not be placed on
frames or the like.
Fig. 2
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765041791 Rev. 002 8
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General description
Fig. 3
Compressor
Condenser with air filter
Front panel
Display
SF 950 / SF 950plus
Door
Gasket
Air intake
Air distribution plate
Foot pedal opener
Wall rails
Supports

765041791 Rev. 002 9
Electrical connection
Read the text below thoroughly before electrical connection.
The product is intended for connection to alternating current. The connection
voltage (V) and frequency (Hz) are shown on the name plate in the cabinet (see
Fig. 7). Only the supplied cord is to be used.
Never use an extension cord for this appliance!
If a wall socket is placed in a longer distance than the length of the supplied power
cord, contact an electrician to establish a wall socket within the range of the
supplied power cord.
If the product is defective, it must be examined by a service electrician advised by
Gram Commercial during the guarantee period, if it is a product with built-in
compressor.
If it is a product connected to an external compressor unit, it must be examined
by the company who has connected the product to the unit.
Outside the guarantee period, it is advisable to use the service advised by Gram
Commercial, if possible. If this is not the case, assistance is required from
a refrigeration company with knowledge of Gram’s products.
Fig. 4

765041791 Rev. 002 10
Always disconnect the power if interruptions in power supply occur, and when electrical parts
are removed/put on, and before cleaning and maintenance of the product.
Repairing of electrical/technical parts may only be performed by a service electrician from
Gram Commercial or an authorised refrigeration company with knowledge of Gram’s
products.
Do not use the product before all coverings are installed, so that live or rotating machine
parts can not be touched.
The product is not to be used outdoor.
All earthing requirements stipulated by the local electricity authorities must be observed. The
plug and wall socket should then give correct earthing. If necessary, contact an electrician.
Make sure the product is switched off at the socket before service is
performed on electrical parts. It is not sufficient to switch off the product
by the START/STOP key as there will still be voltage to some electrical
parts of the product.
General use
Do not block vent holes in the front panel.
Do not damage the refrigeration system parts.
During normal operation, some parts of the refrigeration system in the
compressor compartment might reach high temperatures, and could therefore
cause burns if touching these components.
Do not use electrical devices inside the product.
To ensure correct and efficient air flow in the cabinet, the shaded areas must be
kept free of items. (see Fig. 5)
All items to be stored, that are not wrapped or packed, must be covered in order
to avoid unnecessary corrosion of the inner parts of the cabinet.
If any controller parameters are changed from default, this could cause that the
product is not functioning normally, and harmful temperatures could damage
items that are kept inside the product.
If the product is turned off, wait minimum 3 minutes before turning it on again.
This is to protect the compressor from damage
Maximum loading of wire shelf: 40 kg
Do not store explosive substances such as aerosol cans with flammable
propellant in this appliance.

765041791 Rev. 002 11
Fig. 5

765041791 Rev. 002 12
Program display
- Clock (HCL)
- Temperature curve (PCL, SCL, thawing
program)
Warning symbol
Second display
(Secondary display)
Third display
(Tertiary display)
First display
(Primary display)
Display of the relevant functions / connection states
Fan
Defrosting Alarm
Dry cooling
Compressor(s)
Keyboard lock
Commissioning
Overview of the control panel:
Overview of the display:
Function bar:
Unit settings
ON / OFF +
Back button
Program
start button
Altering values,
navigation in menus
Display
Program selector buttons
Warning Filter Cleaning

765041791 Rev. 002 13
Connect the cabinet to the mains.
Please note! During maintenance and repairs, it must be ensured that the unit has no
voltage applied to it. So take the plug out of the socket, or shut off the power! It is NOT
sufficient to switch the unit off with the START/STOP button, since the unit in such case
still has the mains voltage applied to it.
Connection, display and loading of the software
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Switch the unit on with the on/off button
Once the unit has been connected up, all segments in
the display will light up in white for approx. 3 seconds
(display test).
Subsequently, the selected program will be shown on
the secondary display - "P07" in this case.
The program "P07" controls 2 compressors. Hence
both compressor symbols will light up in blue.
Afterwards, all used segments will be displayed in their
respective colours. The secondary display will also
show the software version - "4.0" in this case.
Finally, the secondary display will show yet another
version number for the software. When this display
ends, the unit is ready for operation, and the
temperature is shown in the primary display.

765041791 Rev. 002 14
Initial defrosting of the evaporator
(connection when the unit is cold)
If the unit is in use and it is cold in the room, the program starts with a defrosting cycle:
In connection with this, the display shows the
temperature internally within the unit.
The defrosting symbol is lit up:
Do not use pointed or sharp objects to make defrosting go faster!
Storage program
(connection when the unit is warm)
If the unit is started in a warm state (normal room temperature internally inside the unit), then
it will immediately switch to the storage program
In connection with this, the display shows the
temperature internally within the unit.
When the storage program has been activated,
only one of the compressors will be working.
The fan will run at a low RPM figure (SF950plus).
Hence only one of the two compressor symbols will
be lit. In addition, the symbol for the evaporator fan
will be displayed.

765041791 Rev. 002 15
Display of the setpoint (temperature
setting) in the storage program
Press the P button, and hold it in.
The display then shows the "desired value" and
thereby the temperature setting.
Setting of the setpoint (temperature
setting) in the storage program
Press the P button, and hold it in. The display
then shows the "desired value" and thereby the
temperature setting. When the + or - button is
lightly pressed (the P button continues to be held
in), the value is increased or lowered.
When the P button is released, an auditory signal
is issued and the value is saved. The display once
again will show the internal temperature within the
unit.

765041791 Rev. 002 16
Time-controlled cooling "HCL"
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This program is time-controlled only. The air temperature and the
temperature of the contents of the cabinet are not taken into account.
Both compressors perform the cooling in parallel. The second
compressor starts 15 seconds after the first one. When the proper
evaporator temperature is attained, the fan will be running audibly with
a very high RPM figure (SF950plus).
The program is selected by pressing the button :
When the button is pressed, it will stay lit continuously,
and the P, + and -buttons will blink. The symbol for
the clock will light up. The secondary display will show the
program name "HCL" and the tertiary display the selected
duration in minutes. The symbols for a high fan RPM figure
and operation with 2 compressors will be blinking.
The + and - buttons are used to change the time, and
P for starting the program.
While the program is running, the time will count down on
the tertiary display. The primary display will show the current
temperature inside the unit. In addition, the connected
elements will now be continuously lit: both compressors,
both fan symbols for a high fan RPM figure (SF950plus).
After the preset period of time expires,
an acoustic signal is emitted.
After the signal, defrosting is
commenced (if such is required based
upon the evaporator sensor's
temperature). Then it subsequently
switches to the storage program.
Hence the desired value for the
storage program must always be set
and checked before starting "HCL"!

765041791 Rev. 002 17
Temperature-controlled cooling (Hard Chill)
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This program cools down to the selected, desired value at full motor
power (controlled with the use of the extra sensor).
Both compressors perform the cooling in parallel. The second
compressor starts 15 seconds after the first one. When the proper
evaporator temperature is attained, the fan will be running audibly with
a very high RPM figure (SF950plus).
The program is selected by pressing the button :
After pressing the button, it will be lit continuously. The
P, + and - buttons will be blinking. The curve symbol
for Hard Chill will light up. The secondary display shows the
program name "PCL", and the tertiary display the selected,
desired temperature value.
The + and - buttons are used to change the desired
value, and P for starting the program.
The primary display will now show the current temperature
in the room, the secondary display the program name "PCL"
and the tertiary display the selected, desired temperature
value. The curve symbol is now continuously displayed. In
addition, the connected elements will now be continuously
lit: both compressors, both fan symbols for a high fan RPM
figure (SF950plus).
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When the desired value is attained, an
acoustic signal will be emitted.
After the signal, defrosting is
commenced (if such is required based
upon the evaporator sensor's
temperature). Then it subsequently
switches to the storage program. Hence
the desired value for the storage
program must always be set and
checked before starting "PCL"!

765041791 Rev. 002 18
Temperature-controlled cooling (Soft Chill)
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This program gently cools down to the selected, desired value
(controlled using room sensor).
Both compressors perform the cooling in parallel. The second compressor starts 15
seconds after the first one. The fan runs at a high RPM figure (SF950plus).
The program is started by pressing the button .
Temperature changes with Soft Chill: The program is governed solely by the room
sensor. The air temperature and goods being chilled are thus taken into account. The
elapsed time has no effect on the course of the program. The cooling system works with
start/stop cycles with a gradient up to the preset storage temperature. The process stops
as soon as the temperature value reaches 0 °C, and the controls switch to the storage
program.
After pressing the button, it will be lit continuously. The P,
+ and - buttons will be blinking. The curve symbol for Soft
Chill will light up. The secondary display shows the program
name "SCL", and the tertiary display the selected, desired
temperature value. The + and - buttons are used to
change the desired value, and P for starting the program.
The primary display will now show the current temperature in the
room, the secondary display the program name "PCL" and the
tertiary display the selected, desired temperature value. The
curve symbol is now continuously displayed. In addition, the
connected elements will now be continuously lit: both
compressors, both fan symbols for a high fan RPM figure
(SF950plus).
When the desired value is attained, an
acoustic signal will be emitted.
After the signal, defrosting is commenced
(if such is required based upon the
evaporator sensor's temperature). Then it
subsequently switches to the storage
program. Hence the desired value for the
storage program must always be set and
checked before starting "SCL"!
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765041791 Rev. 002 19
Thawing program
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In connection with thawing, a defrosting heating element is used,
which is governed by the temperature that the room sensor measures.
The thawing program is only able to start when the desired
temperature value is set to between +2C and +8C.
The program is started by pressing the button .
starts the function.
When the desired value is attained, an
acoustic signal will be emitted.
After the signal, defrosting is
commenced (if such is required based
upon the evaporator sensor's
temperature). Afterwards, the storage
program is switched to.
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Manual defrosting of the evaporator
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Manual defrosting is only possible as initial defrosting:
Startaprogram:Presson 
(waitfor10seconds).
Presson inordertoend/interrupttheprogramagain.Thisthen
causesdefrostingtobecommenced
Do not use pointed or sharp objects to make defrosting go faster!
Automatic defrosting of the evaporator
The unit performs automatic defrosting 1 to 8 times daily, when the "PCL",
"HCL" and "SCL" programs have finished. Defrosting cannot be concluded
manually! In connection with this, the internal temperature inside the unit is
shown before the defrosting process commences.

765041791 Rev. 002 20
The user menu
The user menu is opened by pressing the button for approx. 3
seconds.
Navigate through the menu using the using the + and - buttons, after which the selected
menu item is opened with the button P. The + and - buttons increase or decrease the
value. They are also used to navigate around in the submenu ("LAL"). The manner of
procedure is the same in the submenu. Altered values are saved by pressing on P (receipt
acoustic signal!). The menu items or the menu are exited by pressing .
Menu item Description Settings range Factory
setting
DC Dry cooling function * Activation: "ON"
Deactivation: "OFF" OFF
LAL Local alarm (display)
LHL upper boundary value for
LAL +25 … -35 °C +25 °C
LHd Delay for LHL 1 … 120 min / in steps of 5 minutes 60 min
DA Door alarm 0 = off / 1 = on 1
Dad Delay for door alarm 0 … 15 min 1
BU Acoustic alarm for LAL 0 = off / 1 = on 1
CAL Temperature offset (sensor
harmonisation)
CA Temperature offset sensor
input A (room sensor)
-5 … +5 K / steps of 0.5 K 0.0 K
CE Temperature offset sensor
input A (room sensor)
-5 … +5 K / steps of 0.5 K 0.0 K
ALL Relative (escorted) or
absolute (fixed) alarm limits ESC = escorted / FAS = fixed FAS
DEF Number of defrosting cycles for
each 24 hours 0 … 8 4