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765041938 Rev. 002 1
GRAM BAKER GA 950 / GA 550
User manual
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765041938 Rev. 002 2
Gram Commercial A/S
Aage Grams Vej 1
6500 Vojens
+45 73 20 12 00
www.gram-commercial.com
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765041938 Rev. 002 3
Contents
Application ............................................................................................................................................... 5
Safety information ................................................................................................................................... 6
Location ................................................................................................................................................... 7
Placement of multiple units next to each other ................................................................................... 9
General description ............................................................................................................................... 10
Electrical connection ............................................................................................................................. 11
Humidifier .............................................................................................................................................. 12
Water drain ............................................................................................................................................ 12
Water connection .................................................................................................................................. 13
General use ........................................................................................................................................... 14
Commissioning, functional description .............................................................................................. 15
Connection and disconnection of the main circuit breaker .............................................................. 16
User interface to the unit (touchscreen) ............................................................................................ 17
Settings for the unit: date, time and language .................................................................................. 17
Selection of language .......................................................................................................................... 18
Setting of clock (time).......................................................................................................................... 19
Setting the date .................................................................................................................................... 19
Setting of date format .......................................................................................................................... 20
Season: summer time/winter time ...................................................................................................... 20
Temperature measurement, units of Celsius or Fahrenheit. ........................................................... 20
Setting of ending times for programs for each weekday .................................................................. 21
Preconfigured programs ...................................................................................................................... 22
Selection and start of a program ........................................................................................................ 22
Selection of ending time for the program .......................................................................................... 23
Changing of established date and ending time for the program...................................................... 24
Changing of further settings before program start ............................................................................ 25
Display during program execution (fig. 32) ....................................................................................... 27
Changing a running program .............................................................................................................. 28
Interruption of the currently running program ................................................................................... 29
Storage of user-defined (own) programs ........................................................................................... 29
Manual programs ................................................................................................................................. 33
Deletion of a specially created program ............................................................................................ 33
Alarms/error messages ....................................................................................................................... 34
Temperature alarms ............................................................................................................................ 34
Sensor alarms ...................................................................................................................................... 35
Vapour system alarms ......................................................................................................................... 35
Other alarms ........................................................................................................................................ 35
Door closing mechanism ....................................................................................................................... 36
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Power failure ......................................................................................................................................... 36
Cleaning ................................................................................................................................................ 36
Door gaskets ......................................................................................................................................... 37
Long term storage ................................................................................................................................. 37
Service .................................................................................................................................................. 38
Disposal ................................................................................................................................................. 39
EC-Declaration of conformity ................................................................................................................ 40
Wiring diagram ...................................................................................................................................... 41
Piping diagram ...................................................................................................................................... 42
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765041938 Rev. 002 5
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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765041938 Rev. 002 6
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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765041938 Rev. 002 7
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.
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.
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765041938 Rev. 002 8
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 +16C and +40°C.
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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765041938 Rev. 002 9
Placement of multiple units next to each other
Depending upon the temperature and humidity at the installation location as well as the
correct values being set, water contained in the surrounding air may condense on the surface
of a refrigerator (condensation formation) due to the design.
If multiple refrigerators or freezers are placed next to each other, then this condensation
effect is stronger, plus a smaller amount of air would then circulate between the units.
Hence, the minimum distance between the units must be 40 mm.
This space must not be closed off at its top or bottom, however due to aesthetical
considerations it may be covered in the front by, for example, a stainless steel panel. In order
to be able to clean this space, the panel must be detachable.
If it is not possible to establish free air circulation at the bottom via, for example, installation
on a pedestal, then the space must not be fully sealed at the front.
Min. 40 mm
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765041938 Rev. 002 10
General description
Condenser with air filter
Compressor
Display
Front panel
Vapor system
Door
Gasket
Air inlet
Air distribution plate
Foot pedal opener
Wall rail
Supports
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765041938 Rev. 002 11
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. 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.
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765041938 Rev. 002 12
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.
Humidifier
The cabinet is equipped with a humidifier that provides steam during proving. The humidifier
consists of a water tank heated by electrodes. From the tank, steam is led into the cabinet
through a pipe. The tank is automatically filled from the water supply.
The tank can be flushed by switching the cabinet off at the main switch and then switching it
on again. In addition, the system is automatically flushed regularly depending on water
quality.
For further information on servicing and maintaining the humidifier, please
consult the "Service and operation manual". For maintenance of the humidifier,
request service assistance.
Water drain
Defrost water and water flushed from the humidifier
are led away through a pipe on the rear of the
cabinet. A water seal must be installed between
cabinet and drain.
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765041938 Rev. 002 13
Water connection
To provide proper steam production, the humidifier must be connected to a water supply. To
assure ideal steam production, it is important that the electrical conductivity of the inlet water
is measured by the installer, to assure it is within standard range. See Below Box!
Please note the following:
The electrical conductivity of the water must be in the range: 200-800 µS/cm.*
The temperature of the inlet water must not exceed 40°C.
The water pressure must be in the range 1-10 bar.
A shut-off valve, a check valve, and a filter if necessary, must be fitted to the supply pipe.
*If the electrical conductivity of the water is outside the above mentioned standard range (200
– 800 µS/cm) some controller settings, might need adjustment in order to maintain proper
steam production. These adjustments must be done by a service technician, and are
described in the service manual.
Indications that water conductivity is outside of standard range are:
Too poor steam production
Frequently having boiler overfilled alarm
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765041938 Rev. 002 14
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.
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.
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765041938 Rev. 002 15
Commissioning, functional description
In order to ensure reliable processes for Freezing, Storage, Thawing, Proving and Holding
the cabinet must be furnished with controls to regulate the air temperature, ventilation and
relative humidity.
The operating modes of Storage, Thawing, Proving and Holding can be connected up
manually.
This means that the unit can also be used as a normal refrigerator or freezer in a storage
program with a constant temperature. With the thawing and proving operating modes, the
relative humidity is instead kept constant while the temperature varies.
Correct programming of the controls establishes the desired combination of the operating
modes:
time-controlled freezing with subsequent storage for an arbitrary length of time
time-controlled freezing with subsequent storage and time-controlled thawing as well
as subsequent maintenance of the climate upon conclusion of the thawing program
complete program with freezing, storage, thawing and proving until being taken out or
holding when the roux time is exceeded.
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765041938 Rev. 002 16
Connection and disconnection of the main circuit breaker
The unit is furnished with a two-pole main breaker, which is located behind the tiltable control
panel. When it has been disconnected, the controls and all components that are accessible
without opening the control panel are disconnected from the power supply. If the main
breaker is connected, then the controls and the other components are connected to the
power supply.
Warning
When working on the electrical equipment, the unit must
always have its power from the grid shut off by disconnecting
it and then pulling the plug out of the power socket. It is NOT
sufficient to disconnect the unit with the ON/OFF button
because certain parts of the unit will still have an applied
voltage.
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765041938 Rev. 002 17
User interface to the unit (touchscreen)
All operating functions are performed by touching the respective buttons displayed on the
touchscreen, for example changing values and starting and stopping programs. In connection
with this, the function is "touch and release", which in other words is that the controls react to
being touched once you let go of the keyboard.
When the unit is connected with the lighting mains, and the main breaker switched on, then
the standby display is shown on the screen: (fig. 1). The Gram logo and the unit type "GA
950" as well as the date and time are shown on a field with a blue background. Please check
that the correct date and time are displayed.
Fig. 1
If the date, time or selected language are not displayed correctly (date format), go to the
section entitled "Settings for the unit: date, time and language" (see below) in order to
change the settings.
When the display is touched, the controls change from standby to the first on-screen menu
(fig. 2):
Fig. 2
This menu is the start menu for all further functionality. If the unit is in the process of running
an active program, and you do not touch the screen for 30 minutes, then the controls will
switch back to the standby display (fig. 1)
Settings for the unit: date, time and language
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765041938 Rev. 002 18
In order to change the settings for the date, time, formats, units or menu language, you need
to press the button on the keyboard (machine symbol) in the lower right corner of the
screen (fig. 3). The factory setting for the language is English.
When you press the button , the menu for settings for the unit opens (fig. 4):
Fig. 3 Fig. 4
To set the date, time or language, press the button . The settings menu then opens
with the associated fields (fig. 5):
Selection of language
Fig. 5 Fig. 6
When you touch the fields, the pull-down menus are opened and the possible values
displayed. Fig. 6 shows the language selections. The desired language can be selected by
touching it.
It is important to restart the controls to ensure that this change has been performed for all
areas.
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765041938 Rev. 002 19
Setting of clock (time)
The clock is set by touching the field with the time under the text "Time" (fig. 7):
Fig. 7 Fig. 8
Enter the desired time directly using the numerical keypad and confirm with the "OK" button
(fig. 8). The clock works with days in 24-hour format. It is not possible to use a 12-hour
format ("am"/"pm"). After pressing the "OK" button, the time is saved and the display returns
to the previous menu (fig. 5). Exit the menu without making any changes by selecting "<".
Setting the date
The date is set by pressing on the date field under the text "Date"
(Fig. 9)
Fig. 9 Fig. 10
A calendar menu will be displayed (fig.10). Here, you must select the month, year and day,
and then confirm with "OK". Exit the menu without making any changes by selecting "<". The
previous menu is then displayed (fig. 5).
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765041938 Rev. 002 20
Setting of date format
Set the date format by pressing the "DD/MM/YYYY" field (fig. 11).
Fig. 11 Fig. 12
The choice between the sequence day/month/year and month/day/year is now shown (fig.
12): Select by pressing.
Season: summer time/winter time
Setting of the season, i.e. the setting of winter/summer time is done by pressing on the field
under the text "Summer time" (fig. 13):
Fig. 13 Fig. 14
Possible choices:
"NO"
= manual selection of winter time (system time)
"YES"
= manual selection of summer time (system time + 1 hour)
"AUTO"
= automatic switching to Central European Summer Time, CEST:
Start on summer time: last Sunday in March
End of summer time: last Sunday in October
The factory setting is "AUTO". Select by pressing.
Temperature measurement, units of Celsius or Fahrenheit.
Setting the unit to display temperatures in Celsius or Fahrenheit is done by pressing the field
under "Units" (fig. 15):
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765041938 Rev. 002 21
Fig. 15 Fig. 16
Here, you can choose to display temperatures in Celsius or Fahrenheit for all displays in the
controls (fig. 16).
When you have made all the changes to the settings, then return to the Settings menu (fig. 4)
for the unit by pressing the "OK" button (fig. 16).
Fig. 17 Fig. 2
Return to the start menu (fig. 2) by pressing the field (arrow back) in the lower right
corner (fig. 17).
Setting of ending times for programs for each weekday
In order to take weekends and holidays into consideration, an ending point in time can be
established for programs for each weekday as a default. This is then shown upon later
program selection, and you only need to confirm it by choosing "morning".
Press the button in the keyboard (machine symbol) in the start menu (fig. 3, page 16).
The menu for settings for the unit now opens (fig. 18).
Fig. 18 Fig. 19
Press on the "Calendar page" (fig. 18) in order to open the ending time menu for the program
(fig. 19). When you press on the white fields with the times for the day, a settings menu
opens, where you can enter the time (fig. 20).
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765041938 Rev. 002 22
Fig. 20 Fig. 20a
Enter a time. In order to jump over a day, the symbol „---„ (fig. 20a) needs to be inserted on
the desired day. With "OK", you save what you entered for this weekday, or you can return
to the weekly overview (fig. 19) without saving.
Once all the changes have been made, you return to the start menu by pressing twice,
(fig. 20a).
Preconfigured programs
There are five preconfigured programs stored in the controls, which can be selected directly
in the start menu under the overview (fig. 21). These programs cannot be deleted or
overwritten.
Fig. 21
Selection and start of a program
In order to start a preconfigured program without changing the settings, you press on the
button on the keyboard with the symbol Master. The selected symbol is shown with a blue
edge, and the "Settings" button (symbol for the sliding button) is shown in blue, which means
that it has been activated (fig. 22).
Fig. 22
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765041938 Rev. 002 23
Further touching of the Master symbol opens a window with an ending time for the program
(ready at) on the following day.
Selection of ending time for the program
A menu is opened in which the ending time for the program is selected, and the default setting of "Weekday" must be confirmed (fig. 23).
The usual ending time for programs can be established in the menu Settings for the unit
as a default value for each weekday (see the section entitled "Default ending times for
programs for each weekday", page 21).
If the ending time established for the program is
correct, then the program can be started by
choosing "Weekday" (Monday, Tuesday, etc.).
The program only starts if there is sufficient time
remaining between the time for the starting and
ending times for the program for the sum of the
programmed program sections (phases).
Otherwise, the earliest possible ending time for
the program is shown (fig. 23).
To switch out of the display, press on "Ready at".
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765041938 Rev. 002 24
Changing of established date and ending time for the program
To do this, press on the "Calendar" field (fig. 26)
Fig. 26 Fig. 27
The calendar menu (fig. 27) will be displayed. Here, the date
can be changed by touching the date fields. Selections for
changing the time can be opened by touching the time window.
Here, the time can be entered and then saved with "OK". By
selecting you exit the menu without making any changes.
With "OK" you exit the menu and start execution of the
program.
Fig. 20
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765041938 Rev. 002 25
Changing of further settings before program start
In order to adjust a preconfigured program, touch the button on the keyboard with the Master
symbol. The selected symbol is displayed with a blue edge, and the "Settings" button
(symbol with sliding button) is shown in
blue, which means that it has been
activated (fig. 28).
Touching the "Settings" button (symbol
with sliding button) displays the settings
menu with five program phases:
Freezing, Storage, Thawing, Proving,
Holding (fig. 29).
Fig. 28
Fields are shown below that contain the values for duration, temperature and relative
humidity for the respective program phase.
By touching the field for the respective
program phase, for example , you
select it to have its values set. The fields are
then opened, for example
, by touching
them (white fields). The data entry menu is
shown, for example time, "Duration" (fig. 30).
Fig. 29
Fig. 30
In order to deactivate a program phase, the symbol must be selected, after which you press
on it until the field "GREY" has been saved. In order to reactivate the program phase, you
must press on it again, until the symbol has its original colour. If goods are placed in the unit
that have been refrigerated in advance, and the program is started with storage, then under
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765041938 Rev. 002 26
you must choose selection, see the first section. For example, to disconnect holding
you must make the same selection under .
With "OK" the values are accepted and the menu closed. The selection menu "Save recipe
?" is then shown (fig. 31)
Saves the entered values
temporarily and accordingly runs the execution of
the program activated below only once.
Enables storage of the changes in a
special user-defined program (see the section
"User-defined programs", page 27).
Fig. 31
Means that the menu will be exited without changes, i.e. the changes will be
rejected.
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765041938 Rev. 002 27
Display during program execution (fig. 32)
Thetoplineshowsthephaseoftheprogramexecutioncurrentlyrunningdependingupontheprogram
selected:
Freezing,Storage,Thawing,Proving,Holding
Thefieldintheupperright
rectangleshowsthe
currentlyrunningprogram
phaseandtheassociated
remaining(residual)time.
Aredtriangleisshownas
analarmsymbolinthe
eventofanalarm.
Thecurrentvalueforthe
temperatureortherelative
humidityisshowninthe
lowerrightcorner
dependinguponthe
programphase.
Thegreenbaratthe
bottomofthedisplay
showsthetotalprogram
executioninproportion
totheduration.
Inthewindowinthemiddle,the
symbolforthecurrently
runningprogramisshownatthe
left,inthecentretheendingtime
fortheprogramandattherighta
buttontointerrupttheprogram.
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765041938 Rev. 002 28
Changing a running program
Fig. 33 Fig. 34
Touching the program symbol (fig. 33) opens the settings menu (fig. 34), where you can
change the specifications for program phases that have not been run yet.
Touching the field with the ending time for the program (fig. 35) opens the settings menus for
date and time (fig. 36) for purposes of changing the ending time for the program, see the
above for the descriptive section "Changing the ending time for the program" (page 22) /
"Changing the date of the ending time for the program" (page 23).
Fig. 35 Fig. 36
Here, the date can be changed by touching the
date fields. Selection of the time can be opened
by touching the time window, fig. 20. Here, the
time can be entered and saved with "OK". Exit
the menu without making changes with "<".
The ending time for the program may only be
changed before the start of the thawing phase!
Fig. 20
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765041938 Rev. 002 29
Interruption of the currently running program
Touching the button causes the currently running program to be interrupted (fig. 36).
Fig. 36 Fig. 37
A window opens where for verification purposes you are asked whether the program should
really be halted (fig. 37). If ("YES") is selected, the program is stopped. If
("Back") is selected then interruption of the program is interrupted, i.e. you
return to the currently running program without any action being taken.
Storage of user-defined (own) programs
In order to change a predefined program and save it as your own program, touch the button
on the keyboard with the symbol (here, for example, Master). The selected symbol is
displayed with a blue edge, and the
"Settings" button (symbol with sliding button)
is shown in blue, which means that it has
been activated (fig. 38). Touching the
"Settings" button (symbol with sliding button)
displays the settings menu with the five
program phases (fig. 39).
Fig. 38
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765041938 Rev. 002 30
Fig. 39
Under these, there are fields containing the values for duration, temperature and relative
humidity for the respective program phase. By touching the field for the respective program
phase, for example, it is selected for the setting of its values. Then the fields, for
example , are opened when touched. The value entered for a
value, for example the length of time "Duration", is shown (fig. 40).
Fig. 40
In order to deactivate a program phase, the symbol must be selected, after which you press
on it until the "GREY" field has been saved. To reactivate the program phase, you must
press on it again until the symbol has its original colour. If goods are placed in the unit that
have been refrigerated in advance, and the program is started with storage, then under
you must choose selection, see the first section. For example, to disconnect holding, you
have to make the same selection under .
FreezingStorageThawingProvingHolding
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765041938 Rev. 002 31
With "OK" the values are accepted and the menu closed. The selection menu "Save recipe
?" is then shown (fig. 41)
Saves the entered values
temporarily and runs in a corresponding
manner the commenced program sequence
1 x.
Means that the menu is exited
without changes.
Fig. 41
With the settings made are saved in a special user-defined program. The
storage menu is displayed.
Fig. 42 Fig. 43
When touching the field with the program name (fig. 42), a window with an alphanumeric
keyboard is displayed for entry of a special program name (fig. 43). Enter a name for the
program, and press "OK", or exit the window without changes with .
The storage menu is then displayed again.
Fig. 43 Fig. 44
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765041938 Rev. 002 32
Touching the program symbol (fig. 43) shows a selection of symbols for your own programs
(fig. 44). Choose a symbol by touching it, and navigate back and forth between further
symbols with "<" or ">". Change for example the picture from to or exit the
menu without changes with "<".
The storage menus will be displayed.
Fig. 45 Fig. 46
Touching the field selects the memory location in one of the folders in the
start menu.
Fig. 47
Select a folder, or exit the menu without changes with "<".
Bear in mind that the preconfigured programs themselves in the folder cannot be
overwritten.
When all settings have been adjusted, you can save your program with "OK".
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765041938 Rev. 002 33
Manual programs
The display start page (fig. 48) will save up to
four different symbols. You can activate each
one of these program phases separately to
for example use the unit as a storage freezer
or solely as a proving machine.
Fig. 48
Procedure at the start of the phases:
Select the desired program, and press once, until a blue frame is displayed.
Then press the symbol at the bottom to the right, and set the settings accordingly
(white fields).
Exit the menu with the symbol OK. For further steps in connection with execution, storage
and interruption, please see page 29.
Exit the menu without saving with the button "<".
Deletion of a specially created program
Select program, blue frame is displayed, after which you continue to press until a new menu
item is displayed, (fig. 49).
Fig. 49
You can now select "YES" or "NO" for deletion. The program is deleted by selecting "YES",
whereas it continues to be available by selecting "NO".
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765041938 Rev. 002 34
Alarms/error messages
If an error arises, an error message window
is displayed on the screen, for example a
room sensor error, and an acoustic alarm is
issued.
In order to acknowledge this alarm, you
must touch the alarm window (the area with
the black background).
Then a red triangle is shown on the display
for the currently executing program until the
error is remedied.
Depending upon the priority of the error, the
program will continue with an emergency
program, or it will be interrupted.
Temperature alarms
Error message Description System reaction
Alarm high temperature
The temperature around the room sensor
has been above the alarm value for longer
than the alarm delay time
none
Alarm low temperature
The temperature around the room sensor
has been below the alarm value for longer
than the alarm delay time
none
Condenser temperature high
The temperature around the evaporator
sensor has been above the alarm value
for longer than the alarm delay time
none
Too many consecutive evaporator
temperature alarms
The evaporator temperature alarm is
occurring more frequently than the setting
for repetition counts
The compressor is disconnected, and
the evaporator fan runs with 100%
power.
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765041938 Rev. 002 35
Sensor alarms
Error message Description System reaction
Room sensor error
Sensor defective, not connected or shortcircuited.
Compressor runs for 5 min. ON and
5 min. OFF.
Evaporator sensor error
Sensor defective, not connected or shortcircuited.
Defrosting will be 45 min., and the
evaporator fan will start 10 min. after
the defrosting.
Condenser sensor error
Sensor defective, not connected or shortcircuited
None
RF sensor error
Sensor defective, not connected or shortcircuited
Vapour system will be shut off until the
error has been remedied
Vapour system alarms
Error message Description System reaction
Boiler overfilled – summon service
Too much water in boiler, defective water
valve.
Vapour system will be shut off until the
error has been remedied.
Water connection error
No water connection to boiler, no power to
water valve.
No steam production
Test water connection
No water connection to boiler, no power to
water valve.
No steam production
Boiler discharge error Defective water valve.
Vapour system will be shut off until the
error has been remedied.
Boiler overfilled Defective water valve
Vapour system will be shut off until the
error has been remedied.
Other alarms
Error message Description System reaction
Door open
Door open longer than 45 min. or defective
door contact.
Compressor disconnected until the
error has been remedied.
Power connection error Loss of power for more than 5 min.
Program is shut down when the power
comes back on again.
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765041938 Rev. 002 36
Door closing mechanism
The door is equipped with a self-closing system. If the door is opened less than 90, it will
close by itself. If the door is opened more than 90, it will stay open.
The door can be opened by using the foot pedal. This leaves both hands free when placing
foodstuffs the cabinet.
Power failure
In the event of a power failure, the control remembers the temperature setting and restarts
the product when power is restored. If the power failure persists for some time, the control
might revert to the factory setting.
Cleaning
Insufficient cleaning will cause that the product will not work at optimum perfomance, or
eventually it will be defective.
Before cleaning, the product should always be disconnected.
Do not flush the product with water, do not use water jet or steam hose
as this may cause short-circuits in the electrical system.
Cleansing agents containing chlorine or compounds of chlorine as well
as other corrosive means, are not to be used, as they might cause
corrosion to the stainless panels of the cabinet and the evaporator.
The compressor compartment and in particular the condenser must be kept free
from dust and dirt. This is best done by cleaning the compressor compartment
and the condenser air filter with a vacuum cleaner, if dust/flour is the matter.
The air filters on the condenser and the front panel can be removed and cleaned
in hot water (at max. 50°C).
For the external maintenance – use stainless steel polish.
The product should be cleaned internally with a mild soap solution at suitable
intervals and checked thoroughly before it is put into operation again.
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765041938 Rev. 002 37
Door gaskets
This chapter deals with the importance of a well-functioning door gasket.
Gaskets are an important part of a refrigerator/freezer. Gaskets with reduced functionality,
reduces the tightness of the cabinet. Reduced tightness might cause increased humidity,
internal icing, an iced up evaporator (leading to reduced refrigeration capacity), and in worst
case reduced lifecycle of the cabinet.
Therefore it is important to be aware of the condition of the gasket. Regular
inspection is recommended.
The gasket should be cleaned regularly with a mild soap solution.
If a gasket needs replacement, contact your supplier.
Long term storage
If the product is taken out of operation, and need to be prepared for long-term storage,
clean the inside compartment, the door and door gasket thorougly with a hot soapy damp
cloth.
Eventual remnants of food could create mould.
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765041938 Rev. 002 38
Service
The refrigerating system and the hermetically sealed compressor require no
maintainance - they merely have to be kept clean.
If refrigeration fails, first investigate whether the unit has been unintentionally disconnected or
switched off at the socket, or whether a fuse has blown.
If it is not possible to find the cause of the refrigeration failure, please contact Gram
service department.
When contacting us please tell us the name and serial number (S/N) / (WWYY) of the
cabinet. This information is stated on the name plate.
Location of the name plate:
Type
REF
PO No
S/N
Input: V Hz W A
Defrost: W
Refrigerant: g
Climate class:
Isolation class:
Foam propellant Cyclopent ane
Permissible operation over-pressure:
Suction side: 10 bar
Discharge side: 25 bar
Gram Commercial A/S
Aage Grams Vej 1, 6500 Vojens
Denmark CVR nr. 12 00 66 32
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765041938 Rev. 002 39
Disposal
The below only concerns the United Kingdom.
Disposal of an old cabinet is only available when we are delivering a new one at the same
time. Cabinets must be fully defrosted and emptied prior to collection.
Gram recognises that our products for the catering market are considered as WEEE when
they become obsolete. To ensure that Gram’s responsibilities are handled correctly and
environmentally friendly, we are signed up the largest Business to Business compliance
scheme in the UK – B2B Compliance
http://www.b2bcompliance.org.uk
B2B Compliance will on our behalf deal with all areas of our responsibilities when
collecting and disposing of equipment which fall under the UK WEEE regulations.
B2B Compliance can be contacted on telephone number 01691 676124.
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765041938 Rev. 002 40
EC-Declaration of conformity
Producer
Name: Gram Commercial A/S
Adress: Aage Grams Vej 1, 6500 Vojens
Tel.: +45 73 20 12 00
Product
Model: Baker GA 950, Baker GA 550
Refrigerant: R134a, R404A, R290
Year: 2016
Directives
The product is in compliance with all the essential health- and safety requirements
and provisons in:
Directive for Machinery 2006/42/EF
The product is where relevant in compliance with the following other directives:
Regulation 2015/1095
FCM regulation 10/2011
Regulation 1935/2004
RoHS - 2011/65/EU
Standards
The following standards are used to the extent necessary to comply with the relevant
directives:
DS/EN 12100:2011 - Safety of machinery -- General principles for design -- Risk
assessment and risk reduction
DS/EN 60335-1:2012 – Household and similar electrical appliances. Safety. General
requirements
DS/EN 60335-2-89:2010 – Household and similar electrical appliances. Safety.
Particular requirements for commercial refrigerating appliances with an incorporated
or remote refrigerant condensing unit or compressor
Person
responsible for
technical dossier
Company: Gram Commercial A/S
Adress: Aage Grams Vej 1
Name: John Lund
Signature
Vojens 18/11-2016 R&D Manager
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765041938 Rev. 002 41
Wiring diagram
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765041938 Rev. 002 42
Piping diagram
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765041938 Rev. 002 43
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