Page 1
GRAM ECO/SUPERIOR
User manual
765041631 Rev. 001 1
Page 2
765041631 Rev. 001 2
Gram Commercial A/S
Aage Grams Vej 1
6500 Vojens
+45 73 20 12 00
www.gram-commercial.com
Page 3
Contents
Application .................................................................................................................... 4
Safety information ........................................................................................................ 5
Location ........................................................................................................................ 6
General description ...................................................................................................... 9
Electrical connection .................................................................................................. 10
General use ................................................................................................................ 11
Operating the product ................................................................................................. 13
Errors and alarms ....................................................................................................... 14
User menu .................................................................................................................. 16
1. Setting of dry refrigeration .................................................................................. 17
2. Setting of rapid thaw ........................................................................................... 17
3. Local alarm setting .............................................................................................. 18
4. Local alarm setting .............................................................................................. 18
5. Temperature offset .............................................................................................. 19
6. Alarm limits .......................................................................................................... 19
7. Number of defrosts ............................................................................................. 19
Troubleshooting .......................................................................................................... 20
Keylock ....................................................................................................................... 21
Defrosting ................................................................................................................... 21
Defrost water .............................................................................................................. 22
Door closing mechanism ............................................................................................ 23
Power failure .............................................................................................................. 23
Cleaning ..................................................................................................................... 23
Door gaskets .............................................................................................................. 24
Long term storage ...................................................................................................... 24
Service ........................................................................................................................ 25
Disposal ...................................................................................................................... 26
EC-Declaration of conformity ..................................................................................... 27
Wiring diagram Gram Eco .......................................................................................... 28
Wiring diagram Gram Superior .................................................................................. 29
Piping diagram ........................................................................................................... 30
765041631 Rev. 001 3
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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 with knowledge of the products.
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. 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.
765041631 Rev. 001 4
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Safety information
Important
Description of symbols used in this manual.
Warning
Important If these instructions are not observed, the product might be damaged or
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.
Lacking observation to these instrucions might result in accidents with
personal injury.
destroyed.
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.
765041631 Rev. 001 5
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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.
765041631 Rev. 001 6
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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
765041631 Rev. 001 7
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There must always be 20 cm of free space above the product, to ensure that the
heat from the condenser can be led away.
The product should be placed as close as possible up against the wall. For products
with a heating element in the tray on the cabinet backside, however max. 75 mm
from the wall.
Max. 75 mm
Fig. 3
765041631 Rev. 001 8
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General description
Compressor
Condenser with air filter
Front panel
Display
Air intake
Air distribution plate
Shelves for storage
Gasket
Door
Fig. 4
765041631 Rev. 001 9
Foot pedal
Page 10
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. 8). 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. 5
765041631 Rev. 001 10
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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. 6)
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
765041631 Rev. 001 11
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Do not place foodstuff
below the bottom shelf
support
Fig. 6
765041631 Rev. 001 12
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Operating the product
Control elements:
Primary display
Secondary display
Control lamps
213
45
+
-
P
Display of temperature
Display of error codes, alarms, settings
etc.
These lamps indicate, which
components/functions are active.
Warning lamps
These lamps only lights up if something
is wrong, or action is required.
Control keys
On/off key. Used for turning the
appliance on or off, and exiting the
menu.
P
P key. Used as selection key and for
activation of a menu in combination
with other keys.
Numeric keys. Setting of parameters.
-
+
21345
+/- keys. Up/down in setting.
765041631 Rev. 001 13
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Starting up:
Plug in the appliance.
Push to turn on the appliance.
The display shows the software version, and relevant control lamps light up.
On cold cabinets, or if the cabinet has been turned off for a short time, and the
evaporator temperature is still below the freezing point, a defrost will be activated.
See the chapter “Defrosting”.
Temperature setting:
Keep pressed. When doing this, the setpoint temperature is displayed.
While is kept pressed, the setpoint can be changed by pressing or .
Each time or is pressed the temperature will change one degree. The
P
P
+
-
+
-
new value flashes in the display
When the required setpoint has been set, let go of the keys, a short beep
sounds, and the settings are saved.
Errors and alarms
Display code Description
OP
A1 / OP
A2
A4
Applicable to all alarms: press to confirm the alarm. The display returns to normal
operation.
The door is open.
Door alarm, if the door remains open, or is not closed correctly.
Local high temperature alarm.
External high temperature alarm
P
765041631 Rev. 001 14
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Display code Description
F1
Room sensor error.
Error display will continue until the error has been mended.
Service assistance is required.
F2
Evaporator sensor error.
Error display will continue until the error has been mended.
Service assistance is required.
F3*
Condenser sensor 1 error.
Error display will continue until the error has been mended.
Service assistance is required.
F4*
Condenser sensor 2 error.
(only on products with 2 refrigeration circuits)
Error display will continue until the error has been mended.
Service assistance is required.
F7*
FILTER
Too high condenser temperature.
The code is displayed until the condenser temperature returns to
normal.
The cause might be a clogged condenser, or too high ambient
temperature.
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.
* Applies only to cabinets with built-in compressor.
Reminder of cleaning the condenser air filter:
After 600 compressor running hours the filter must be cleaned and it is indicated by
one or more warning lights:
FILTER . Some hours before, the user will be
reminded that it is soon time to clean the condenser air filter.
If the cleaning is not completed within 650 hours, the warnings continue, and an
acoustic alarm sounds every 2 seconds..
Resetting the compressor counter:
After cleaning the air filter, the compressor counter must be reset to remove the
alarms.
It can only be reset by using a certain key combination.
Press 3 times followed by 2 times . The warning lights are now turned
off.
FILTER lights green for 1 minute after the compressor counter has been
P
reset correctly, and then FILTERis turned off.
765041631 Rev. 001 15
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User menu
User menu overview:
Menu access P + 1
1. Dry refrigeration DC ON/OFF Activation of dry refrigeration.
2. Rapid thaw UF ON/OFF Activation of rapid thaw. (on/off)
3. Local alarm setting LAL LHL °C Setting the upper alarm limit. At
LHd min. Time delay for the upper alarm
4. External alarm
setting
ELL °C Setting the lower alarm limit. At
5. Temperature offset
(sensor calibration)
6. Alarm limits ALL FAS/ESC Setting of alarm limits.
7. No. of defrosts DEF 4 Number of defrosts in 24 hours.
Note: The numbers at each menu item refer to the numbers in the descriptions on
the following pages.
If a change of the setting is required, get access to the menu by pushing for
more than 3 seconds. The values are changed by pushing the or keys. The
new setting is saved by pushing . To exit the menu, push .
+ / - Description
(on/off)
alarm, the display shows: A2
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. (1=on /
0=off)
EAL EHL °C Setting the upper alarm limit. At
alarm, the display shows: A3
alarm, the display shows: A4
EHd min. Time delay for upper alarm.
ELd min. Time delay for lower alarm.
CAL CA K -5…+5 K
Fixed/escorting.
FAS= fixed limits / ESC = limits
following the setpoint
P
+
1
+
P
-
765041631 Rev. 001 16
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1. Setting of dry refrigeration
Note : Applies only to products equipped with dry refrigeration.
P
+
Press for more than 3 seconds. The secondary display shows DC.
Press , the secondary display shows OFF, because the program is off.
Press , ON flashes in the display.
Press to confirm, ON lights constantly, and the control lamp DRY lights.
1
P
+
P
Press twice to exit the user menu. Dry refrigeration is now active.
De-activation of dry refrigeration is done in the same way.
1 x
P
>3 sek.
+
1
+
1.
DC
5
P
OFF
5
+/-
ON
5
DRY
2 x
P
2. Setting of rapid thaw
Note: Applies only to products equipped with rapid thaw. The temperature setpoint
must be set between +2C and +8C in order to activate rapid thaw.
P
+
Press for more than 3 seconds.
Press . The secondary display shows UF.
Press , the secondary display shows OFF, because the program is off.
Press , ON flashes in the display.
Press to confirm, ON lights constantly, and the control lamp lights.
1
+
P
+
P
At the same time the thaw symbol is displayed:
Press twice to exit the user menu. Rapid thaw is now active. The control
lamp flashes, simultaneously the color of the arrow runs from the bottom to
the top.
When the rapid thaw ends, and are turned off and the controller
returns to normal operation.
2 x
P
>3 sek.
+
1
+
2.
UF
5
P
OFF
5
+/-
ON
5
P
2 x
765041631 Rev. 001 17
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3. Local alarm setting
P
+
Press for more than 3 seconds.
Press , until the secondary display shows LAL.
Press , select menu option LHL, LHd, DA, DAd or BU with the key.
Press to confirm.
Change the value by using the or key.
Press to confirm.
1
+
P
P
+
P
-
+
Press 3 times to exit the user menu.
>3 sek.
P
+
1
3 x
+
LAL
5
P
3.
LHL
-
4.
LHd
-
5.
DA
-
6.
DAd
-
7.
BU
5
5
5
5
5
P
25
+
P
5
+
P
OFF
+
P
5
+
P
OFF
5
5
5
5
5
+/-
+/-
+/-
+/-
+/-
5
24
5
4
On
5
4
5
On
5
4. Local alarm setting
P
+
Press for more than 3 seconds.
Press , until the secondary display shows EAL.
Press , select menu option EHL, ELL, EHd, or ELd with the key.
Press to confirm.
Change the value by using the or key.
Press to confirm.
1
+
P
P
+
P
-
3 x
P
3 x
P
3 x
P
3 x
P
3 x
P
+
Press 3 times to exit the user menu.
>3 sek.
P
+
1
4 x
+
765041631 Rev. 001 18
EAL
5
P
8.
EHL
-
9.
ELL
-
10.
EHd
-
11.
ELd
5
5
5
5
P
25
+
P
25
+
P
5
+
P
5
5
5
5
5
+/-
+/-
+/-
+/-
5
24
24
5
4
5
4
5
3 x
P
3 x
P
3 x
P
3 x
P
Page 19
5. Temperature offset
P
+
Press for more than 3 seconds.
Press , until the secondary display shows CAL.
Press , the secondary display shows CA.
Change the value by using the or key.
Press to confirm.
1
+
P
+
P
-
Press 3 times to exit the user menu.
>3 sek.
P
+
1
5 x
+
12.
CAL
5
P
CA
5
P
6. Alarm limits
P
+
Press for more than 3 seconds.
Press , until the secondary display shows ALL.
Press , the secondary display shows FAS.
Change the value by using the or key.
Press to confirm.
1
+
P
+
P
-
+/-
5
0
1
5
2 x
P
Press twice to exit the user menu.
6 x
P
>3 sek.
+
1
+
13.
ALL
5
P
FAS
5
+/-
ESC
5
7. Number of defrosts
P
+
Press for more than 3 seconds.
Press , until the secondary display shows DEF.
Press , the secondary display shows the current no. of defrosts ( 4 is
default).
Change the value by using the or key.
Press to confirm.
Press twice to exit the user menu.
P
>3 sek.
+
1
1
+
P
+
P
7 x
+
14.
DEF
5
-
P
5
4
+/-
5
5
2 x
P
2 x
P
765041631 Rev. 001 19
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Troubleshooting
Noise:
If abnormal noise occurs, request service assistance.
Operating sounds from compressor, condenser fan and interior fan are
normal. Some models are equipped with a drain pump.
If sheet metal parts, front panels or panels in front of the compressor
compartment are making noise, these might be open. Close the panels.
Frosting inside compartment:
Ambient humidity too high.
The door is opened too often.
The door is left open for too long.
Damaged door gasket. Check it thoroughly for damages.
Poor cooling performance:
Ambient temperature too high.
The door is opened too often and/or open for too long.
The door is left open.
Damaged door gasket.
Temperature setting too high.
Product too packed with foods - air inlet/outlet blocked.
Condenser air filter is clogged.
Warm or hot foods inside the product.
Defrost in progress. The cabinet temperature may rise temporarily during the
defrost cycle, but it will not affect the foods inside. The defrost symbol is
displayed.
Some of the foods are frozen:
Product too packed with foods - air inlet/outlet blocked.
Temperature setpoint too low.
Evaporator fan might be defective.
Condensation around the door:
Ambient humidity too high.
The door is not closed tightly.
Damaged door gasket.
765041631 Rev. 001 20
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Too high energy consumption:
Ambient temperature too high.
The door is opened too often and/or open for too long.
The door is left open.
Damaged door gasket.
Temperature setpoint too low.
Product is too packed with foods - air inlet/outlet blocked.
Condenser air filter is clogged.
Warm or hot foods are brought into the product.
Product is placed in direct sunlight or close to heat-emitting surfaces.
The default settings have been changed.
Keylock
1
The keypad can be locked by simultaneously pushing for more than 5
+
seconds.
lights to indicate that the keys are locked, and a short beep sounds. Now it is
not possible to use the keys for temperature setting etc.
The same code is to be used for unlocking the keypad again.
Defrosting
Defrosting is automatically performed 4 times every 24 hours. If the product is
operating under severe load (frequent door opening and frequent replenishment),
manual defrosting can become necessary.
Starting manual defrosting: push simultaneously for more than 3 seconds.
P +
Refrigerator: Control lamps for fan and defrosting are alight.
Extended refrigerator: Control lamp for defrosting is alight, and lamp for fan is
alight depending on temperature setpoint.
Freezer: Control lamp for defrosting is alight.
Shortly after the defrosting period has ended, the compressor starts and the
compressor symbol is alight.
It is possible to change the number of defrosts. Find further information on:
www.gram-commercial.com
Do not use sharp or pointed objects to accelerate the defrosting process.
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Defrost water
The product produces water during defrosting, which is led into a tray at the rear of
the product (see Fig. 7).
A re-evaporation pipe from the refrigeration system, and an electrical heating
element, placed in the tray, re-evaporates the water.
Some models are equipped with a condensate pump, which pumps the water up into
a tray in the compressor compartment, where it is re-evaporated..
It is recommended to clean the tray or the pump and corresponding parts at least
once a year. Remember to disconnect the cabinet before cleaning.
Be careful not to damage piping parts and heating element during cleaning.
Fig. 7
765041631 Rev. 001 22
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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 with a vacuum cleaner and a brush.
The air filters on the condenser and the front panel can be removed and cleaned
in a dishwasher 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.
765041631 Rev. 001 23
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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.
765041631 Rev. 001 24
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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, see Fig. 8.
Location of the name plate:
Gram Commercial A/S
Aage Grams Vej 1, 6500 Vojens
Denmark CVR nr. 12 00 66 32
Type
REF
PO No
S/N
Foam propellant Cyclopentane
Permissible oper ation over-pressu re:
Input: V Hz W A
Defrost: W
Refrigerant: g
Climate class:
Isolation class:
Suction side: 10 bar
Discharge side: 25 bar
Fig.8
765041631 Rev. 001 25
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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.
765041631 Rev. 001 26
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EC-Declaration of conformity
We, Gram Commercial A/S, declare under sole responsibility that the following products:
Name: Plus Eco 70, Plus Superior 72,
Twin Eco 82, Twin Superior 84,
Euro Eco 60, Euro Superior 62
Refrigerant: R134a, R404A, R290, R600a
To which this declaration relates, is in compliance with all the applicable essential requirements, and
other provisions of the European Council Directive.
Directive of the European Parliament and of the Council:
- Pressure Equipment Directive 97/23/EF
- Directive for Machinery 2006/42/EF
- Low voltage Directive 2006/95/EF
- EMC Directive 2004/108/EF
- RoHS Directive 2002/95/EF
- Atex Directive 94/9/EF
Gram Commercial A/S
Aage Grams Vej 1
DK-6500 Vojens
Telephone: + 45 73 20 12 00
Vojens, 18. february 2014
John Lund
R&D Manager
765041631 Rev. 001 27
Page 28
Wiring diagram Gram Eco
765041631 Rev. 001 28
Page 29
Wiring diagram Gram Superior
765041631 Rev. 001 29
Page 30
Piping diagram
765041631 Rev. 001 30
Page 31
765041631 Rev. 001 31
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