Gram ECO MIDI KG Series User manual

765041782 Rev. 002 1
ECO MIDI KG/FG
User manual
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765041782 Rev. 002 2
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Gram Commercial A/S
Aage Grams Vej 1
6500 Vojens
[phone]
www.gram-commercial.com

765041782 Rev. 002 3
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Contents
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Application .................................................................................................................. 4
Safety information ...................................................................................................... 5
Location ...................................................................................................................... 6
Optimizing the energy consumption ........................................................................... 7
General description .................................................................................................... 8
Refrigerant / GWP value ............................................................................................ 9
Electrical connection .................................................................................................. 9
General use .............................................................................................................. 11
Operating the product ............................................................................................... 12
Temperature setting ................................................................................................. 13
Keyboard lock .......................................................................................................... 13
Alarms ...................................................................................................................... 14
Error codes on the display ........................................................................................ 15
Troubleshooting ....................................................................................................... 16
Defrosting ................................................................................................................. 18
Defrost water ............................................................................................................ 19
Door closing mechanism .......................................................................................... 20
Power failure ............................................................................................................ 20
Cleaning ................................................................................................................... 20
Door gaskets ............................................................................................................ 21
Long term storage .................................................................................................... 21
Service ..................................................................................................................... 22
Disposal ................................................................................................................... 23
EC-Declaration of conformity ................................................................................... 24
Wiring diagram ......................................................................................................... 25
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765041782 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 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.
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765041782 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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765041782 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
bottom. Be aware of this, when removing the transport pallet.
Fig.1

765041782 Rev. 002 7
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.
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
Optimizing the energy consumption
 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.
 Do not keep the door open for too long.
 Keep the condenser filter clean – to be cleaned at least every 2 weeks.
 Do not set the temperature setpoint too low.
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765041782 Rev. 002 8
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General description
Fig. 3
Illuminated top panel
Air inlet
Air distribution plate
Shelves for storage
Vent intake
Glass door
Gasket
Display
Compressor
Condenser with air filter

765041782 Rev. 002 9
Refrigerant / GWP value
Refrigerators Refrigerant Charge kg GWP
CO2
equivalent
ECO MIDI KG 60 G R290 0,11 3 0,3
ECO MIDI KG 82 G R290 0,12 3 0,4
ECO MIDI KG 60 H R134a 0,18 1430 257
ECO MIDI KG 82 H R134a 0,34 1430 486
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Freezers   
ECO MIDI FG 60 G R290 0,10 3 0,3
ECO MIDI FG 82 G R290 0,11 3 0,3
ECO MIDI FG 60 H R404a 0,27 3922 1059
ECO MIDI FG 82 H R404a 0,33 3922 1294
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.

765041782 Rev. 002 10
Fig. 4
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.

765041782 Rev. 002 11
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.
Fig. 5

765041782 Rev. 002 12
Operating the product
Connect the product to the socket. This is done by mounting the accompanying power
cord first as shown in Fig. 4, and then subsequently connecting the cord to the socket.
To switch the product on and set the desired temperature for the cabinet, the uppermost
panel must be flipped up and held in that position.
NOTE: Note that the panel does not stay up by itself, but rather must be held up
when it is opened.
Fig. 6
When the product has been connected to the power supply, but not switched on yet (in
standby), this is indicated by a small control lamp which is the only one lit in the
lower right corner of the display.
To switch the product on, press for approx. 3 seconds. During start-up, the
control lamp will blink until the product is on.
The display will show the current temperature in the product. This also serves to indicate
that the power supply is connected to the product.
The product is switched off in the same manner as it is switched on. By pressing
for approx. 3 seconds.
To switch on and off both the interior light in the product and the light in the display box,
above the door, use the switch placed immediately to the left of the controls behind the
display box. To gain access to this switch, rotate the display box upwards as shown in
Fig. 6.
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765041782 Rev. 002 13
Temperature setting
Set the desired cabinet temperature in the following manner:
It is important to make sure first that the keyboard is not locked. See how in the section
below on keyboard locking.
Press the key. The compressor lamp blinks, and the current cabinet
temperature setting is shown in the display. This indicates that the current temperature
setting can be changed now in the following manner:
Press or to raise or lower, respectively, the temperature setting to the
desired level.
Once the desired cabinet temperature has been set, press the key again to save
the new value. The compressor lamp will go out, unless the compressor is running.
Alternatively, by not touching the keys for a minimum of 15 seconds, the controls will
switch back to the normal temperature display, and the value that has been set will be
saved automatically.
In the event of an interruption to the power supply, the controls will remember the
temperature setting, and the product will start up again when the power comes back.
Keyboard lock
The keyboard is automatically locked when it has not been used/operated for 30
seconds. This secures the product against unauthorised/inadvertent changes to the
settings or switching off of the controls.
To unlock the keyboard:
Briefly press . If the display subsequently shows Loc then the controls are locked.
To unlock the controls, press any key for approx. 3 seconds, until the display shows UnL.
The display is now unlocked and new settings can be entered.
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765041782 Rev. 002 14
The controls can show alarms that are related to the settings for the controls or the
product's operation.
The following alarms can occur:
AH High temperature alarm. This code is shown in the display if the cabinet
temperature is too high in relation to the product's set point. The alarm is
automatically reset when the correct temperature is re-established.
AL Low temperature alarm. This code is shown in the display if the cabinet
temperature is too low in relation to the product's set point. The alarm is
automatically reset when the correct temperature is re-established. (This
alarm is only shown in KG models).
id Door alarm. This code is shown in the display if the door has been open for a
long time. When the door is closed, this alarm is automatically reset.
COH Condenser overheated. This code is shown in the display if the condenser
temperature has been too high. Clean the condenser filter in front of the
condenser. (Refer to the placement of the filter in Fig. 3).
CSd Compressor shut off. This code is shown in the display if the condenser
temperature has been so high that it could damage the compressor. The
compressor shuts off when this error is shown. To restart the system, do the
following:
Clean the condenser filter in front of the condenser. (Refer to the placement of
the filter in Fig. 3). To reset this error, it is necessary to switch the product off
and on again. The error is not reset automatically.
dFd Defrosting alarm. This code is shown in the display if the defrosting has been
interrupted at the maximum time allowed for a defrosting. The product will in
all probability continue to function normally. This is just an indication that the
product is being or has been subjected to a greater load than the defrosting
parameter settings are able to accommodate. This error is acknowledged by
touching any key.
Alarms

765041782 Rev. 002 15
Error codes on the display
Pr1 If Pr1 is shown in the display, it means that there is an error on the
temperature sensor in the product, and service assistance should be
summoned.
The product will in the meantime attempt to maintain the set temperature.
Pr2 If the display is showing Pr2, there is an error with the evaporator sensor. The
sensor should be replaced as soon as possible. Summon service assistance.
Pr3 If Pr3 is shown in the display, it means that there is an error with the
temperature sensor in the condenser, and service assistance should be
summoned.
The product will in the meantime attempt to maintain the set temperature.
Control lamps:
The display contains the following control lamps:
Control lamp for compressor. Lit when the compressor is in operation. Blinks while
the temperature is being set, or if the compressor start has been delayed
(compressor protection).
Control lamp for defrosting. Lit continuously during defrosting. Blinks while
draining after completed defrosting.
Control lamp for evaporator fan. Lit continuously when the evaporator fan is in
operation. Blinks during delay of fan operation.
Control lamp for operation of cabinet heating elements. Lit continuously when
cabinet heating elements are in operation (Frame, glass and drainage heating
elements). This is only for freezers with glass doors (FG models).
Control lamp for compressor operating time. When this control lamp is lit, it means
that the compressor has been running for so many hours that it is time to clean the
condenser's filter, which is located immediately in front of the condenser. (Refer to
the placement of the filter in Fig. 3). When the filter has been cleaned and
remounted, the counter that shows the interval must be reset.
This control lamp is the only one in lit in the display when the product is
functioning in the state termed low consumption. To see further function indicators
and the temperature in the display, it is necessary to press one of the buttons on
the controls.
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765041782 Rev. 002 16
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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.

765041782 Rev. 002 17
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.
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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.
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765041782 Rev. 002 18
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Defrosting
KG:
Defrosting is automatically performed 4 times every 24 hours, by circulating the air inside
the cabinet during a forced standstill of the compressor. The defrost LED lights to
indicate the defrosting cycle is running.
FG:
Defrosting is automatically performed 4 times every 24 hours, by a defrost heating
element.
Manual defrosting:
If the cabinet is operating under severe load (frequent door opening and frequent
replenishment), manual defrosting can become necessary.
Manual defrosting is performed as follows:
Push for 4 seconds, and defrosting is started. The defrost LED lights to
indicate the defrosting cycle is running.
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Do not use sharp or pointed objects to accelerate the defrosting process.
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765041782 Rev. 002 19
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Defrost water
Defrost water is led through a tube in the insulation, to a tray in the compressor
compartment.
A re-evaporation pipe from the refrigeration system, placed in the tray, evaporates the
defrost water.
It is recommended to clean the tray 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.
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Fig. 7
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765041782 Rev. 002 20
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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.
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