Gram Baker SF 1500 G Service manual

765042364 Rev.000 1
Operating- and Service manual
Baker SF 1500 G
When installing this appliance, it is of great importance to
make sure that the size of the room, where the cabinet is to
be installed, is being taken into consideration, in order to
comply with safety regulations. For further explanation
look under “Location”.

765042364 Rev.000 2
The introduction. 3
MPC 46 and the menus. 3
Temperature control, programmes and regulation: 5
User menu 8
Visual and acoustic settings 10
Settings for running cycle 11
Test program for relays and electrical components 12
Display of current sensor inputs 13
Reset the controller to factory setting 13
Parameter settings in commercial program variants – March 8th 2013 14
Plug connections onboard the controller 15
SAFETY INFORMATION 18
LOCATION 19
DEFROST WATER 21
GENERAL DESCRIPTION 22
REFRIGERANT / GWP VALUE 23
CLIMATE / TEMPERATURE CLASS 23
ELECTRICAL CONNECTION 24
DIRECTIONS FOR DAILY USE 25
STARTING UP 27
TIME CONTROLLED CHILLING (HARD CHILL) 27
TEMPERATURE CONTROLLED CHILLING (HARD CHILL) 28
TEMPERATURE CONTROLLED CHILLING (SOFT CHILL) 28
STORAGE PROGRAM 29
DEFROSTING 30
THAWING 30
DRY REFRIGERATION 31
ERROR CODES ON THE DISPLAY 31
TROUBLESHOOTING 32
DOOR MONITORING 33
LIGHT SOURCE REPLACEMENT 33
POWER FAILURE 33
CLEANING 33
LONG-TERM STORAGE 34
SERVICE 34
DISPOSAL 35
EC DECLARATION OF CONFORMITY 36
WIRING DIAGRAM 37
PIPING DIAGRAM 38

765042364 Rev.000 3
The introduction.
Since the introduction of our own standard controller I year 2001, the controller has gone through several software
updates. More program variants is developed, new functions is added to existing variants and others is been
improved.
There was a directly access to the menus on the front of our cabinet, which was a great help for the service men
and also for the workers in the factory here in Vojens.
All different settings are categorize and placed in submenus.
The access comes through main menus.
MPC 46 and the menus.
The menus are divided up in two main menus.
A menu for presentations of values in the display and settings for
alarms parameters, and another menu for technical, practical or
physical settings to a normal refrigerator or freezer.
In each main menu there exist smaller submenus.
These submenus are divided up in specific menu for kind of
cycles as defrosting or the settings for running the
evaporator fan.

765042364 Rev.000 4
Make sure the appliance is switched off at the socket before service is performed on electrical
parts. It is not sufficient to switch off the cabinet by the START/STOP key as there will still be
volta
g
e to some electrical parts of the cabinet..
Software version and program variant in start-up sequence
When the cabinet switches ON, the controller shows the software version and program variant.
The version number glows in 2 sec. followed by name on the program variant until the controller is finished with the
start-up sequence. The program variant is like the example here below.
In the example above software ver. 2.1 and program variant M2+ is presented.
Cabinets with compressor (HAV) is given by the symbol ” ”. The
symbol should look like a “+” which means including compressor.
Cabinets without compressor (FAV) is given by the symbol ” ”.
The “-“ symbol means “Compressor not included”.
Because program variants like K and M
is difficult to present in a 7-segment
display, the symbols below is used
instead:
H (Refrigerator).
n (Extended temperature range).
P (Process cabinets).
Other program variants name:
F (freeze).
B (Counter).
V (Varm/hot/swallow cabinets)*.
E (Extreme low temperature).
* Complete new variant
Error codes in the display during normal operation
- 0 - The door is open. The alarm system is activated, if the door is not closed within a certain time.
The user is reminded that the door is not properly closed.
F1 Cabinet sensor error. In the meantime the cabinet itself will maintain the set temperature by
the memory of the controller. Service assistance is required.
F2 Evaporator sensor error.
The cabinet will keep running until the error has been mended.
Service assistance is required.
F3/F4 Condenser sensor error. The cabinet will keep running, until the error has been mended.
Service assistance is required.
Applies only to cabinets with built-in compressor.
F5 Error on the sensor for temperature controlled chilling. It has no influence on other
programmes, but it should be replaced. Service assistance is required.
F7 Indicates that the condenser temperature is too high. The cause might be a clogged
condenser, or too high ambient temperature.
If the condenser or air filter needs cleaning, the cabinet must be disconnected at the mains
power. Cleaning of the condenser is done with a brush or a vacuum cleaner.
The air filter can be removed and cleaned in a dishwasher at max. 50C.
If the ambient temperature is too high, the placement of the cabinet might be wrong, and an
alternative place should be found. Ventilation might help.
If this does not help, request service assistance.
A
pplies onl
y
to cabinets with built-in compressor.

765042364 Rev.000 5
Temperature control, programmes and regulation:
Press to see the cabinet temperature setting; the display will show the set temperature.
Temperature up:
Keep pressed. At the same time, press . Each time is pressed the temperature will change one degree.
When the display shows the desired temperature let go of the two keys and the setting has been made. By keeping
pressed, the digits change fast.
Temperature down:
Keep pressed. At the same time, press . Each time is pressed the temperature will change one degree.
When the display shows the desired temperature let go of the two keys and the setting has been made. By keeping
pressed, the digits change fast.
Automatic defrosting:
The defrosting cycle runs 4 times each day. The lamp glows to indicate that a defrosting cycle is running.
The next defrosting runs automatically 6 hours later.
Defrosting can be set from 1 to 8 times per 24 hours. See chapter "User menu".
Manual defrosting:
If the cabinet is operating under severe load (frequent door opening and frequent replenishment) manual defrosting
can become necessary.
Beside the already mentioned automatic defrosting, it is possible to perform a manual defrost cycle. Manual
defrosting is possible during each of the chilling processes, and the storage process.
If a manual defrost cycle is performed during chilling process, the chilling process continues after conclusion of the
defrosting.
The defrost cycle is started in this way:
 Push the DEF button.
 Thedisplayshows[dEF].ThedefrostLED indicatorflashes.
 PushtheP‐buttontostartthedefrostcycle.
 ThedefrostLEDindicator isturnedon.
 After conclusion of the defrost cycle, the current chilling or storage process continues.

765042364 Rev.000 6
Thawing programme
Thethawingcycleisperformedbyutilizingthedefrostheater,andiscontrolledinrelationtothecabinetsensortemperature.
Thecycleendswhentheairtemperaturenolongerchanges.

Thethawingprogrammecanonlybestarted,ifthesetpointisbetween+2Cand+8C.

The thawing cycle is started in this way:

 Pushthe button.
 Thedisplayshows[UF].ThethawLEDindicator flashes.
 PushtheP‐buttontostartthecycle.
 ThethawingLEDindicator isturnedon.
 After conclusion of the thawing cycle, the current storage process continues.
Dry refrigeration programme
Dry refrigeration is activated in this way:
 Push the P-button and the button simultaneously for more than 3 seconds.
 The display shows [dC]. The dry refrigerate LED indicator flashes.
 Push the P-button to select dry refrigeration. To set dry refrigeration mode, use the +/- keys: [H0] = dry
refrigeration, [H1] = normal refrigeration.
 Push the P-button to start dry refrigeration mode.
 The dry refrigeration LED is turned on.

765042364 Rev.000 7
Time controlled chilling (hard chill)
This program runs by time only. Therefore, product or air temperature is disregarded. The refrigeration system runs
constantly, and the process stops when the set time has elapsed.
The process is started in this way:
 Push the button.
 The display shows [HCL] for 1 second. Then the set time is shown, expressed in hours and minutes.
E.g. [0.30] = 30 minutes or [1.25] = 1 hour and 25 minutes. The indicator flashes.
 To set the time, use the +/- keys.
 Press the P-button to save the setting, and the process starts immediately.
 The indicator is turned on.
 To cancel – push the button, and the cabinet is turned off. This is always possible, regardless of the
stage of the setting procedure .
 If the keypad is not activated for 15 seconds, the controller returns to normal operation.
Temperature controlled chilling (hard chill)
This program runs by the temperature of a sensor placed at a warmer spot than the cabinet sensor. Therefore,
cabinet temperature or elapsed time is disregarded. The refrigeration system runs constantly, and the process
stops when the temperature setpoint is reached.
The process is started in this way:
 Push the button.
 The display shows [PCL] for 1 second. Then the temperature setpoint is shown.
E.g. [3] = +3C or [-15] = -15C. The indicator flashes.
 To set the temperature, use the +/- keys.
 Press the P-button to save the setting, and the process starts immediately.
 The indicator is turned on.
 To cancel – push the button, and the cabinet is turned off. This is always possible, regardless of the
stage of the setting procedure .
 If the keypad is not activated for 15 seconds, the controller returns to normal operation.

765042364 Rev.000 8
Temperature controlled chilling (soft chill)
This program runs by the cabinet sensor temperature only. The surrounding air temperature of the products is
regarded. The time has no influence on the chilling process.
-10
-5
0
5
10
15
20
25
30
35
40
1 3 5 7 9 1113151719212325272931333537
Time [h]
Temperature - [°C]
Soft chill diagram
The refrigeration system runs by start/stop cycles towards the temperature setpoint for storage. The process stops
when the setpoint temperature reaches 0C, and the cabinet continues into a storage cycle.
The process is started in this way:
 Push the button.
 The display shows [SCL]. The indicator flashes.
 Pushing the P-button starts the process. The indicator is turned on
 If pushing the plus/minus buttons before pushing the P-button, the lower setpoint temperature is displayed,
as shown in the diagram above: [-8] = -8C.
 To set the temperature, use the plus/minus keys.
 Press the P-button to save the setting, and the process starts immediately.
 The indicator is turned on.
 To cancel – push the button, and the cabinet is turned off. This is always possible, regardless of the
stage of the setting procedure .
 If the keypad is not activated for 15 seconds, the controller returns to normal operation.
Be aware that the lower setpoint temperature may vary according to the substance and amount of the products to
be chilled.
Display during the three chill programmes above
When one of the three programmes above are running, the display alternately shows the shortended name of the
programme, the current temperature and the set temperature or time.
Example: display during the programme “Time controlled chilling – PCL”:
[ PCL ]  [ 3 ]  [ PCL ]  [ -15 ]  [ PCL ]  [ 2 ]  [ PCL ]  [-15 ]  [ PCL ] etc.
User menu
Push on and buttons at the same time in more than 3 sec. and the first Setup menu appears in the display.
Core temp.
Surface temp.
Air temp.
Setpoint temp.

765042364 Rev.000 9
With and buttons its possible to look through each menu items in the “User menu”. Push on button to
activate the desired item and adjust the setting with and buttons.
To confirm the new setting, push button. Leave the menu item and user menu with the button.
Menu access P+

 
Dry refrigeration dC* Activation of dry refrigeration. [HO=off / H1=on]
Rapid thaw UF* Activation of rapid thaw. [on/off]
Local alarm setting LAL* LhL [° C] Setting the upper alarm limit. At alarm, the display shows: [ A2].
LLL [° C] Setting the lower alarm limit. At alarm, the display shows: [ A3].
Lhd [min.] Time delay for the upper alarm limit.
LLd [min.] Time delay for the lower alarm limit.
dA On/off Activation of local door alarm. At alarm, the display shows: [ A1]. [1=on / 0=off]
dAd [min.] Time delay for the door alarm.
BU On/off Activation of buzzer. The buzzer sounds at alarms [ A1], [ A2], [ A3]. [1=on /
0=off]
External alarm setting EAL* EhL [° C] Setting the upper alarm limit At alarm, the display shows: [ A4].
ELL [° C] Setting the lower alarm limit . At alarm, the display shows: [ A5].
Ehd [min.] Time delay for upper alarm.
ELd [min.] Time delay for lower alarm.
dA On/off Activation of local door alarm. At alarm, the display shows: [ A1]. [1=on / 0=off]
dAd [min.] Time delay for the door alarm.
BU On/off Activation of buzzer. The buzzer sounds at alarms [ A1], [ A4], [ A5]. [1=on /
0=off]
Sensor calibration cAL* cA [° K] Offset adjustment of A-senso
r
. Room senso
r
.
cE [° K] Offset adjustment of E-sensor. Extra sensor (placed in air or liquid container).
cF [° K] Offset adjustment of F-sensor. Sensor for low temperature protection.
ALL Activation of escorting alarm limits. [FAS]= fixed limits / [ESC] = limits following the
setpoint.
dEF Number of defrosts in 24 hours.
dPS* Selection of sensor display. Selection between: A, E or F.
*Might not be available, be available at limited or full extent, depending on programme variant and product.

765042364 Rev.000 10
Visual and acoustic settings
Push on and buttons at the same time in more than 6 sec. and the menu item [ A ] appears in the display.
With and buttons it’s possible to look through the main menu item [ A ] and [ P ]. Push on button to enter
the submenu from the main menu items.
With and buttons it’s possible to look through the submenus menu items. Push on button to enter the
desired menu item and adjust the setting with and buttons.
To confirm the new setting, push button. Leave the menu item and submenu with the button.
Menu access
P+ 
 
Alarm setup A A1 [° C] In case of condenser overheat, compressor protection cycle is started.
A2 [° C] Condenser temperature, which disconnects the compressor protection cycle.
A3 [min]. Re-enter time for acoustic alarm (min.)
A4* On/off Activation of alarm history. History only works with alarm system: LAL. [1=on /
0=off]
A5* Selection between A, E or F sensor for alarm systems LAL and EAL. Apllies to
both!
Display presentation P P1 [min.] Temperature freeze after defrosting end.
P2 [° K] Temperature freeze around setpoint. Temperature fluctuation filte
r
.
P3 [sec.] Display updating frequency.
P4 Selection of Celsius or Fahrenheit temperature scale.
*Might not be available, be available at limited or full extent, depending on programme variant and product.