Fri-Jado MDD-24-3 User manual

MDD
US EN (Original Instruction) 9124753 / 2212
USER MANUAL
Multi Deck Display
WARNING
Read the instructions before using the machine.

MDD
US 2/20
KEEP THIS USER MANUAL FOR FUTURE USE
© 2022 Fri-Jado B.V., Oud Gastel, The Netherlands.
We advise you to contact your supplier for the guarantee period and conditions. Further we refer to
our General Terms and Conditions for Sales and Delivery that are available upon request.
The manufacturer does not accept any liability for damage or injury caused by failing to adhere to
these regulations or by not observing the usual caution or care in actions, operation, maintenance
or repair activities, even if not explicitly described in this manual.
As a result of constant commitment to improvement, it may happen that your unit deviates in detail
from what is described in this manual. For this reason, the given instructions are only a guideline for
the installation, use, maintenance and repair of the unit referred to in this manual.
This manual has been composed with the utmost care. The manufacturer shall, however, not be
held responsible for any mistakes in this manual nor for any consequences thereof.
The user is allowed to copy this manual for own use. Further all rights are reserved and nothing in
this manual may be reproduced and/or made public in any way.
Modifications:
In case of unauthorized modifications in or on the unit, every liability on the part of the manufacturer
becomes null and void.

MDD
US 3/20
CONTENTS
1. INTRODUCTION..............................................................................................................4
1.1 General.............................................................................................................................4
1.2 Identification of the unit.....................................................................................................4
1.3 Pictograms and symbols...................................................................................................4
1.4 Safety instructions ............................................................................................................5
1.4.1 General........................................................................................................................5
1.4.2 Moving (when applicable)............................................................................................6
1.4.3 Outdoor use restrictions...............................................................................................6
1.5 Hygiene ............................................................................................................................6
1.6 Service and technical support...........................................................................................6
1.7 Storage.............................................................................................................................6
1.8 Disposal............................................................................................................................6
2. DESCRIPTION OF THE UNIT..........................................................................................7
2.1 Technical description........................................................................................................7
2.2 Intended use.....................................................................................................................7
2.3 Accessories......................................................................................................................7
3. INSTALLATION AND FIRST USE ...................................................................................8
3.1 Unpacking the unit............................................................................................................8
3.2 Installation and positioning................................................................................................9
3.2.1 Applying price rail ........................................................................................................9
3.3 Repositioning the glass shelves........................................................................................9
3.4 Installation air blockers MDD ............................................................................................9
3.5 First use..........................................................................................................................10
4. OPERATION AND USE ................................................................................................. 11
4.1 Operating........................................................................................................................12
5. CLEANING AND MAINTENANCE................................................................................. 14
5.1 Maintenance schedule....................................................................................................14
5.2 Daily Cleaning.................................................................................................................14
5.3 Weekly Cleaning.............................................................................................................14
5.4 Cleaning Glass Panes ....................................................................................................15
6. MALFUNCTIONS AND SERVICE.................................................................................. 17
6.1 Replace the mains cord..................................................................................................17
7. TECHNICAL SPECIFICATIONS .................................................................................... 18

MDD
US 4/20
1. INTRODUCTION
1.1 General
This manual is intended for the user of the MDD (Multi Deck Display). The features and controls are
being described, along with directions for the safest and most efficient use, in order to guarantee a
long life of the unit.
This appliance is intended to be used for commercial applications, for example in kitchens of
restaurants, canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc.,
but not for continuous mass production of food.
All pictograms, symbols and drawings in this manual apply to all available MDD (US) models.
1.2 Identification of the unit
The identification plate can be found on the outside of the machine, and contains the following data:
•Name of the supplier or the manufacturer
•Model
•Serial number
•Year of construction
•Voltage
•Frequency
•Power consumption
1.3 Pictograms and symbols
In this manual, the following pictograms and symbols are used:
WARNING
Possible physical injury or serious damage to the unit, if the instructions are not
carefully followed.
WARNING
Hazardous electrical voltage.
WARNING
Danger of getting injured by hot surfaces.
Suggestions and recommendations to simplify indicated actions.
Recycling symbol.

MDD
US 5/20
1.4 Safety instructions
WARNING
The outside and shelves of the unit can be very hot.
WARNING
The maximum load on top of the unit may never exceed 22 lbs.
WARNING
See installation instructions for grounding requirements.
WARNING
Always use the brakes on both front wheels:
1.4.1 General
The user of the unit will be fully responsible for abiding the locally prevailing safety- rules and
regulations.
The unit may be operated by qualified and authorized persons only. Anyone working on or with this
unit must be familiar with the contents of this manual and carefully follow all guidelines and
instructions. Never change the order of the steps to be performed. The management must instruct
the personnel on the basis of this manual and follow all instructions and regulations.
The pictograms, labels, instructions and warning signs attached to the unit, are part of the safety
measures. They may never be covered or removed, and have to be clearly visible during the entire
lifetime of the unit.
Immediately repair or replace damaged or illegible pictograms, warnings and instructions.
•To avoid short-circuiting, never clean the unit using a water hose. For cleaning instructions,
see section 5.
•The shelves, glass and back of the hot unit can get hot.
•The unit must be cleaned regularly to ensure proper functioning.
•Do not store explosive substances such as aerosol cans with flammable propellant in this
appliance.
•This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if they
have been given supervision or instruction concerning use of the appliance in a safe wayand
understand the hazards involved.
•Children shall not play with the appliance.
•Cleaning and user maintenance shall not be performed by children without supervision.

MDD
US 6/20
1.4.2 Moving (when applicable)
When moving the unit:
•Before moving the unit, first switch off the mains voltage by pulling the plug from the wall
socket.
•Remove pans containing a liquid product from the unit.
•Always keep the unit in upright position.
•Make sure that the wheels can move freely, so they never touch the power lead.
1.4.3 Outdoor use restrictions
WARNING
To avoid short-circuiting, the units may not be used outdoors or in a rainy or very
moist environment.
1.5 Hygiene
WARNING
Immediately remove products in damaged packaging from the equipment and
destroy the products. Clean allcomponents that have come in contact with products
from damaged packaging.
The quality of a fresh product always depends on hygiene. It is essential that products are packaged
immediately after preparation. For hot products, the core temperature of the products at packaging
should at least be 185ºF.
Refer to the cleaning instructions of section 5.
1.6 Service and technical support
The electrical schematics of your unit is included. In case of malfunctions you can contact your
dealer/service agent. Make sure you have the following data available:
•Model.
•Serial number.
This data can be found on the identification plate.
1.7 Storage
If the unit will not be used temporarily, and will be stored, follow these instructions:
•Clean the unit thoroughly.
•Wrap the unit from getting dusty.
•Store the unit in a dry, non-condensing environment.
•Ensure good ventilation.
1.8 Disposal
Dispose of the machine, any components or lubricants removed from it safely in
accordance with all local and national safety and environment requirements.

MDD
US 7/20
2. DESCRIPTION OF THE UNIT
2.1 Technical description
The panels are made of galvanized steel plating, stainless steel or aluminum. Some of the visible
internal and external parts have been provided with a powder coating. The glass used is tempered.
The controls for operating the appliance have been mounted on the operator side of the unit. The
product contact parts are made of stainless steel AISI 304 or AISI 430 and tempered glass.
Heating in the unit is achieved by means of heated shelves in combination with an hot-air curtain per
shelf. The air curtain isolates the hot air inside the unit from the ambient air.
An electronic thermostat controls the temperature. There are two controlling variants at the MDD
models; a single temperature controller and a multi temperature controller which allows each shelf
to have its own operation temperature. At both variants the electronic thermostat has been set at
the correct value at the factory. The set temperature can be changed between 104ºF and 158ºF.
One LED-module per level provides for lighting of the products. The LED-lighting and the heating
are switched on and off separately. There are two MDD user variants; a solid back version and a
pass through version which allows the user to (re)fill products via the back side.
2.2 Intended use
MDD models have been designed solely to keep packaged products warm and to display them.
Any other use will not be regarded as intended use. The manufacturer accepts no liability
whatsoever for loss or injury caused by failing to strictly adhere to the safety guidelines and
instructions in this manual or due to carelessness during installation, use, maintenance and repair
of the unit referred to in this manual and any of its accessories.
Use the unit in perfect technical condition only.
2.3 Accessories
Your unit contains the following standard accessories:
•User manual.
For optional accessories see www.frijado.com.

MDD
US 8/20
3. INSTALLATION AND FIRST USE
All packing materials used for this unit are suited for recycling.
Before and during unpacking, check the state of the unit. In case of damage, store the packing
material, and contact the transporter within fifteen working days after receiving the goods.
3.1 Unpacking the unit
1. Unpack the unit as initiated on the unpacking instruction on the packaging.
2. Remove all remaining packing materials from the unit.
3. Remove the protective foil from the metal parts.
4. Take off the standard accessories.

MDD
US 9/20
3.2 Installation and positioning
WARNING
Electric chock hazard. Grounding instructions: only connect the appliance to an
alternating current provided by a grounded wall socket, with a mains voltage in
accordance with the information indicated on the data plate of the appliance.
It is the consumer's responsibility to make sure the electrical installation conforms
with current national and local codes and wiring regulations.
Do not use a multi plug or extension cord. Such can result in fire, electrical shock,
or other personal injury.
Failure to follow these instructions can result in death or serious injury.
WARNING
Position the unit on a flat and horizontal surface. A temporally inclined plane of
maximum 5º is allowed.
•Be sure that the personnel have sufficient room to work with the unit.
•Keep a distance of at least 6 inch between the back wall and the unit.
•While positioning, keep the unit out of children’s reach.
•Do not position a unit near a doorway, a ventilation device or a refrigerator in order to avoid
any negative effects on the unit’s operation by a cold airflow. The unit is designed for a
maximum draft of 0.65 ft./sec.
•Do not place into direct sunlight.
•The unit should not be used below 68ºF ambient temperatures.
•The unit has a mains plug, and must be connected to a wall socket with the proper mains
voltage. The wall socket must be mounted by a certified electrician.
3.2.1 Applying price rail
Optional price rails can be mounted using the front screws underneath each of the shelves.
3.3 Repositioning the glass shelves
The glass shelves can be positioned at two angled positions (0º and 3º). Refer to installation manual.
3.4 Installation air blockers MDD
It is important that the air blockers will be installed on the shelves. Because without the air blockers
the performance of the MDD cannot be guaranteed! The installation of the air blockers is shown on
the next page.
The air blockers have the following numbers:

MDD
US 10/20
Installation air blockers MDD
There are 4 types of air blockers which need to be installed according the next steps:
1. Mount the air blockers under the shelfs at the 4 positions.
2. Mount air blocker 1 and 2 on the right hand side of the shelf with 4 screws (hand tight).
3. Repeat step 2 with air blocker 3 and 4 on the left side of the shelf.
4. Repeat steps 2 and 3 for all the shelves.
1.
2.
3.
4.
3.5 First use
Before starting to use the unit, clean the inside thoroughly with mild detergent and water.
After cleaning it wipe it with a cloth moistened with clean water to remove residual detergent, then
dry the entire unit.

MDD
US 11/20
4. OPERATION AND USE
The display and/or set value is not the product/unit temperature.
Control Panel
On/Off Switch(es): 3 level model: switch at the top of the back of the unit. 4 and 5 level model:
Switches located at the top of the front next to the lighting and one located at the top of the back.
Controls:
Note: Models with a solid back
have the control panel located
behind the front panel.
1 Temperature controller
(heating)
2 Lighting switch
Single temperature controller
Multi temperature controller
(MDD 4 shelves shown)
Single temperature controller
One controller to switch on/off and control all the shelves. One lighting switch to switch on/off all the
lights.
Display multi temperature controller
One controller to switch on/off and control each shelf on its own. One lighting switch to switch on/off
each light on its own. The controllers and lighting switches are positioned in the same way as the
shelfs and the lights. So letter ´A´ shows the top shelf controller/light switch and letter ´B´ shows the
bottom shelf controller/light switch. The number of controllers depends on the quantity of the
shelves.
Using the multi-temperature controllers
With multi-temp technology shelves can be controlled individually or even turned off completely. In
this way optimal holding conditions for different food groups can be achieved (for example:
depending on holding time, productquality, packaging and accessories used). When set to the same
temperature uniform temperatures can be attained throughout the cabinet and energy can be saved.
Although every combination of settings is possible (ranging from completely off to a setpoint between
104ºF and 158ºF, certain settings may influence the time it takes for a shelf to reach operating
temperature. For example, if only one shelf is turned on it may take over 60 minutes instead of
approx. 30 minutes when shelves are all set to the same temperature. If a range of setpoints is
desired, it is advised to assign the highest setpoint to the top shelf and the lowest setpoint to the
bottom shelf for optimal performance and energy savings. If you need any assistance in determining
the best setup for your hot food-to-go offering (such as temperature setpoint, packaging and
accessories), please contact Fri-Jado.
MDD-60 models only: Always switch on two adjacent shelves to achieve the desired
temperature.

MDD
US 12/20
Temperature controller
Power on/off button*
UP-button
DOWN-button
SET, SET-button
Image for reference only.
* Switch on/off: hold for several sec.
4.1 Operating
The unit is set at 149ºF intake air temperature. If required this temperature can be
adjusted.
At an ambient temperature of 68ºF and an initial core temperature of 185ºF these
factory settings of the unit’s temperature ensure a constant core temperature of at
least 145.5ºF for 4 hours.
Switching-on the unit
•Switch on one of the two main power switches (The fans will start blowing).
•Switch the heating on, by means of the temperature controller.
•Preheat the unit (may take between 30 and 90 minutes depends on controller settings).
•Switch on the lighting.
Loading the unit
•Only place products that have a core temperature of at least 185ºF.
•The hot products need tobe packaged in bags or containersthat are suitable for this purpose.
•To ensure a good contact with the heated trays, only place a single layer of products.
•The maximum loading height is 2 inch below the bottom of the shelf/air guide above.
•The maximum carrying-capacity per shelf is 66 lbs/m, by equal load.
Checking the temperature in the unit
•During operation the display of the thermostat shows the temperature at the probe in the unit.
The indication ON will lit when the elements are active.
Checking the SET temperature
1. Scroll through the folders with and until you find the folder Pb1, Pb2 or Pb3.
2. Press SET to view the value measured by the corresponding probe.

MDD
US 13/20
Adjusting the SET Temperature
•During operation the display of the thermostat shows the temperature in the unit.
•Push once on the SET-button. The set temperature will appear on the display.
•Push the UP and DOWN button within 15 sec.
•Adjust the set temperature by means of the UP-button and the Down-button.
•Push once on the SET-button to store the new set temperature.
Checking the product temperature
•Once every hour, the product temperature should be checked using a digital thermometer.
•Write down the measured values in a log.
•Always use a disinfected thermometer sensor.
Switching off
•Remove all products from the unit. In order to avoid temperature drop of the products, store
them in another warm holding unit.
•Switch the heating off.
•Switch the lighting off.
•Switch the main power off.

MDD
US 14/20
5. CLEANING AND MAINTENANCE
WARNING
Never use a water hose for cleaning. Water can seep into the unit through the
ventilation holes of the unit.
Appliances must be disconnected from their power supply during cleaning or
maintenance and when replacing parts.
Because of hygiene aspects and optimum condition of the unit it is of utmost
importance to keep a daily cleaning pattern from first use onwards.
5.1 Maintenance schedule
Item
Action
Frequency
Inside
•Clean, see section 5.2.
Daily
Outside
•Clean, see section 5.3.
•Use Stainless Steel cleaning spray to remove
stains, and restoring the gloss.
Weekly
Glass panes
•Clean Glass panes, see section 5.4.
Weekly
5.2 Daily Cleaning
•Clean the inside of the unit with hot water and a suitable cleaner.
•After cleaning wipe the inside with a clean wet cloth. Be sure that the detergent is removed
properly.
5.3 Weekly Cleaning
WARNING
The control panel may only be cleaned using a damp cloth.
•Clean the outside of the unit with a small amount of hot water and a mild cleanser and using
a soft brush or sponge. After cleaning it dry the outside with a cloth.
•Treat all cleaned surfaces with a suitable antibacterial agent.
•Rub dry with a soft cloth or a paper towel.

MDD
US 15/20
5.4 Cleaning Glass Panes
Cleaning the top glass pane (3 level models)
•Lift and hold the top glass while
cleaning the top glass pane.
Cleaning the top air guides (3 level models)
WARNING
Do not use detergentsand other cleaning products that maydamage polycarbonate.
Using inappropriate products to clean may tarnish, scratch or even crack any
polycarbonate surfaces.
The transparent air guide pane can be removed for cleaning.
•Lift and hold up the top glass pane
throughout the process.
•The air guide pane is laid up freely
and somewhat flexible and can as
such easily be removed from its
support on the rear by applying a
light amount of torsion.
•After cleaning, place the air guide
pane back by applying some light
torsion.
•Close the top glass pane.

MDD
US 16/20
Cleaning the side double-glass pane (all models)
•Slide the double glass pane
towards the front along the top (A)
and bottom (B) guiding rails. The
side pane can be removed from
the unit once it has slid in its
entirety past the top guide.
CAUTION: Once past the top
guide, the glass pane might fall if
not properly held. Hence do not
leave it standing upright without
being supported by both guide
rails or holding it.
•It is recommended to only move
the pane to such an extent that the
pane areas next to the support
columns can be cleaned.
•To clean the guiding rails, the
pane can be removed in its
entirety.
•If the pane was removed and
needs to be placed back in, before
sliding the pane back into the rails,
ensure the transparent sides of
the pane are facing forwards and
up. Then slide it all the way back
till the front of the pane is in line
with the front plating.
B
A

MDD
US 17/20
6. MALFUNCTIONS AND SERVICE
Before you consult your dealer or the service agency when there is a fault, you can check the
following points yourself:
Is the power supply OK? Check the fuses and the earth leakage switch in the meter cupboard.
Are all the switches in the correct position?
Item
Malfunction
Possible action
Unit
Unit does not work
•Check the power supply.
•Are all switches in the correct position.
Unit
Display shows error code
•Contact your supplier or service agency.
Unit
Unit does not reach set
temperature
•Check correct placing air blockers, see
section 3.4.
Lamp
Does not light up
•Switch ON.
Mains cord
Damaged
•Replace, see section 6.1.
Window
Damaged
•Replace, contact your supplier or service
agency.
6.1 Replace the mains cord
WARNING
Hazardous electrical voltage.
If the mainscord isdamaged, it must be replacedby the manufacturer, hisservice agent or a similarly
qualified person in order to avoid hazards.

MDD
US 18/20
7. TECHNICAL SPECIFICATIONS
WARNING
Consult the identification plate to get the proper specifications of the unit. The
electrical data may vary from country to country.
Model
MDD 24-3
MDD 36-3
MDD 48-3
Approved for
USA / CAN
USA / CAN
USA / CAN
Width
23 5/8 in
35 7/16 in
47 1/4 in
Depth
31 7/8 in
31 7/8 in
31 7/8 in
Depth without bumper
29 1/2 in
29 1/2 in
29 1/2 in
Height on legs
55 15/16 in
55 15/16 in
55 15/16 in
Weight Net Approx.
335 lbs
397 lbs
459 lbs
Ambient Temperature
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
Relative humidity
max. 60%
max. 60%
max. 60%
Noise level (at workplace)
<70 dB(A)
<70 dB(A)
<70 dB(A)
Voltage
1~ 208 V
1~ 208 V
1~ 208 V
Frequency
50/60 Hz
50/60 Hz
50/60 Hz
Max. nominal Current
10.5 A
14.4 A
19.1 A
Plug
NEMA 6-20P
NEMA 6-20P
NEMA 6-30P
Length power cord approx.
10 ft
10 ft
10 ft
Model
MDD 24-4
MDD 36-4
MDD 48-4
Approved for
USA / CAN
USA / CAN
USA / CAN
Width
23 5/8 in
35 7/16 in
47 1/4 in
Depth
31 7/8 in
31 7/8 in
31 7/8 in
Depth without bumper
29 1/2 in
29 1/2 in
29 1/2 in
Height on legs
67 7/8 in
67 7/8 in
67 7/8 in
Weight Net Approx.
419 lbs
485 lbs
551 lbs
Ambient Temperature
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
Relative humidity
max. 60%
max. 60%
max. 60%
Noise level (at workplace)
<70 dB(A)
<70 dB(A)
<70 dB(A)
Voltage
1~ 208 V
3~ 208 V
3~ 208 V
Frequency
50/60 Hz
50/60 Hz
50/60 Hz
Max. nominal Current
12.5 A
14.7 A
19.5 A
Plug
NEMA 6-20P
NEMA 15-30P
NEMA 15-30P
Length power cord approx.
10 ft
10 ft
10 ft

MDD
US 19/20
Model
MDD 24-5
MDD 36-5
MDD 48-5
Approved for
USA / CAN
USA / CAN
USA / CAN
Width
23 5/8 in
35 7/16 in
47 1/4 in
Depth
31 7/8 in
31 7/8 in
31 7/8 in
Depth without bumper
29 1/2 in
29 1/2 in
29 1/2 in
Height on legs
77 3/4 in
77 3/4 in
77 3/4 in
Weight Net Approx.
461 lbs
560 lbs
661 lbs
Ambient Temperature
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
min. 68ºF
max. 86ºF
Relative humidity
max. 60%
max. 60%
max. 60%
Noise level (at workplace)
<70 dB(A)
<70 dB(A)
<70 dB(A)
Voltage
3~ 208 V
3~ 208 V
3~ 208 V
Frequency
50/60 Hz
50/60 Hz
50/60 Hz
Max. nominal Current
11.2 A
14.7 A
19.5 A
Plug
NEMA 15-30P
NEMA 15-30P
NEMA 15-30P
Length power cord approx.
10 ft
10 ft
10 ft

MDD
US 20/20
Fri-Jado B.V.
Blauwhekken 2
4751 XD Oud Gastel
The Netherlands
Tel: [phone]
Fri-Jado Inc.
1401 Davey Road, Suite 100
Woodridge IL 60517
USA
Tel: [phone]
www.frijado.com