Metos CHEF 220 User manual

S/N: 095323/02 Valid from: 01. 06. 2009 Rev.:3.2
(5.1.2023)
3751968, 3751969, 3751970, 3751971, 3751972, 3751972MO, 3751976, 3751977, 3751982, 3751983, 3751984, 3751985,
3751988, 3751988MK, 3751988MO, 3751989, 3751989MK, 3751991, 3751991MK, 3751992, 3751992MK, 3752352, 3755276,
3755785
ROASTING-BAKING OVEN
CHEF 220
Installation and Operation Manual
Translation of the original documentation

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1. General.......................................................................................................................................................3
1.1. Symbols used in the manual ........................................................................................................................................................... 3
1.2. Symbols used on the appliance....................................................................................................................................................... 3
1.3. Checking the relationship of the appliance and the manual............................................................................................................ 3
2. Safety..........................................................................................................................................................4
2.1. Safe use of the appliance................................................................................................................................................................ 4
2.1.1. Disposal of the appliance ................................................................................................................................................................ 4
3. Functional description..............................................................................................................................4
3.1. Intended use of the appliance ......................................................................................................................................................... 4
3.1.1. Use for other purposes.................................................................................................................................................................... 4
3.2. Construction .................................................................................................................................................................................... 4
3.3. Operating principle .......................................................................................................................................................................... 4
3.3.1. Control panel switches .................................................................................................................................................................... 5
4. Operation instructions..............................................................................................................................6
4.1. Before using the appliance.............................................................................................................................................................. 6
4.1.1. Choice of the ovenware................................................................................................................................................................... 6
4.1.2. Howtolltheoven .......................................................................................................................................................................... 6
4.2. Operation procedures...................................................................................................................................................................... 7
4.2.1. Before cooking................................................................................................................................................................................. 7
4.2.2. How to select cooking temperature ................................................................................................................................................. 7
4.2.3. Using the oven................................................................................................................................................................................. 7
4.2.4. Cooking ........................................................................................................................................................................................... 7
4.3.2. Steam removal ................................................................................................................................................................................ 8
4.3. After use .......................................................................................................................................................................................... 8
4.3.1. Cleaning .......................................................................................................................................................................................... 8
4.3.4. How to change the oven bulb.......................................................................................................................................................... 9
4.3.5. Other service measures .................................................................................................................................................................. 9
5. Installation ...............................................................................................................................................10
5.1. General.......................................................................................................................................................................................... 10
5.2. Transporting and unpacking the appliance.................................................................................................................................... 10
5.2.1. Fastening the appliance to the stand............................................................................................................................................. 10
5.2.2. Installation of a Chef oven group................................................................................................................................................... 10
5.3. Positioning the appliance............................................................................................................................................................... 11
5.4. Electrical connections.................................................................................................................................................................... 11
5.5. Test-run.......................................................................................................................................................................................... 11
6. Troubleshooting ......................................................................................................................................12
7. Technicalspecications .........................................................................................................................13

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1. General
Carefully read the instructions in this manual as they contain important information regarding proper, ef-
cient and safe installation, use and maintenance of the appliance.
Keep this manual in a safe place for eventual use by other operators of the appliance.
The installation of this appliance must be carried out in accordance with the manufacturer’s instructions
and following local regulations. The connection of the appliance to the electric supply must be carried out
by qualied persons only.
Persons using this appliance should be specically trained in its operation.
Switch o󰀨 the appliance in case of failure or malfunction. Have the appliance serviced by a technically
qualied person authorized by the manufacturer and using original spare parts.
Not complying with the above may put the safety of the appliance in danger.
1.1. Symbols used in the manual
This symbol informs about a situation where a safety risk might be at hand. Given instructions are manda-
tory in order to prevent injury.
This symbol informs about the right way to perform in order to prevent bad results, appliance damage or
hazardous situations.
This symbol informs about recommendations and hints that help to get the best performance out of the
appliance.
1.2. Symbols used on the appliance
This symbol on a part informs about electrical terminals behind the part. The removal of the part must be
carried out by qualied persons only.
1.3. Checking the relationship of the appliance and the manual
The rating plate of the appliance indicates the serial number of the appliance. If the manuals are missing,
it is possible to order new ones from the manufacturer or the local representative. When ordering new
manuals it is essential to quote the serial number shown on the rating plate.
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2. Safety
2.1. Safe use of the appliance
An oven is a warming device which heats up when used. For this reason, please observe the following
instructions to avoid the risk of burns.
The glass and edges of the door also become hot when the oven is used for longer periods.
Use oven gloves when handling hot ovenware and baking plates.
Beware of hot steam escaping from the oven when opening the oven door.
Containers lled with liquid or substances that become liquid during cooking should be placed at such a
height that the user can look into the container in the oven (DIN: IEC 60335-2-42).
Do not leave the oven on completely unattended for long periods.
2.1.1. Disposal of the appliance
Once the appliance has reached the end of its useful life, it must be disposed of in compliance with lo-
cal rules and regulations. The appliance may contain substances/materials which potentially have an
adverse impact on the environment as well as recyclable materials. The best way of dealing with such
substances is to dispose of them through a proper waste company.
3. Functional description
3.1. Intended use of the appliance
The Chef 220 roasting-baking oven is intended for cooking and browning food, baking and for heating
convenience meals and keeping food warm.
3.1.1. Use for other purposes
Use of the appliance for any other purposes than that mentioned above is prohibited.
The manufacturer shall not be held liable for any situations which may arise from failure to comply with
the warnings and instructions given in this manual.
3.2. Construction
In addition to a single oven, two or three ovens can be stacked on top of another on a stand forming a
roasting and baking station. One or two ovens can also be replaced by a Chef 240 convection oven or a
Chef 200 proving cabinet.
This manual covers the Chef 220 roasting-baking oven, while Chef 240 and Chef 200 have their own
manuals.
3.3. Operating principle
Heating elements are tted at the top and at the bottom of the oven. The cover plate for the lower element
is formed as a tray and can be removed when cleaning the oven chamber.
The electrically heated elements heat up the air in the oven chamber. The products are roasted/baked
partly through heat radiation and partly through the heated air. The upper and lower heating elements
have separate thermostats, which makes it possible to set the upper and lower heating individually. The
oven is also tted with a steam outlet valve for removing superuous steam from the oven chamber.
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3.3.1. Control panel switches
Control panel switches Chef 220
1. Steam exhaust valve. The valve can be used to remove excess steam and moisture from inside the oven.
2. Upper heating on - thermostat lamp. The orange lamp is on when the heating elements are on.
3. Upper heating thermostat. To set the temperature between +50ºC and +300ºC.
4. Lower heating on - thermostat lamp. The orange lamp is on when the heating elements are on.
5. Lower heating thermostat. To set the temperature between +50ºC and +300ºC.
6. Main switch. The green light is on when the oven is switched on.
1
2
3
4
5
6

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4. Operation instructions
4.1. Before using the appliance
Using the appliance for the rst time or when heating elements or cooking plates have been
changed, turn on plates and ovens at MINIMUM temperature for SEVERAL hours or until the insulation
resistance is OK. This allows remaining humidity in the heating elements and cooking plates to dry up. In
fact, on rst connection, the earth insulation can be relatively inadequate, but after the above-mentioned ini-
tialization run the insulation level will normally be re-established according to CEI 18-6 part 307 regulations.
Setting the power or temperature to maximum right away at rst run may damage the heating elements
or the cooking plates.
In unclear cases contact our technical support: [email protected]
There is a slight smell of metal and thermal insulation when the oven is heated for the rst time. This is
completely normal and disappears by heating the oven. Before using the oven for the rst time, heat it to
a temperature of +250ºC until the smell disappears.
4.1.1. Choiceoftheovenware
Choice of the ovenware
• Casseroles: GN1/1-65 mm (RST 18/8). Avoid 100 mm deep containers as these may give an uneven
result.
• Oven pancakes: GN1/1-40 mm, aluminium.
• Pasties, buns, rolls: GN2/1 baking plate, aluminium.
• Convenience meals: GN2/1 grid, RST 18/8.
4.1.2. Howtolltheoven
Correct lling of the oven and the right choice of ovenware ensure the best possible cooking result.
Place the products on the lower pair of guide rails. The top pair of guide rails is used only for gratinating
by turning the upper heating thermostat to the maximum setting.
The oven capacity is 1 pc GN1/1 or 2 pcs GN1/1 containers or baking plates. Especially when baking it
is important to load the oven correctly in order to achieve a good baking result. For instance 20-30 buns
is the correct amount on a GN2/1 baking plate.
If you use grids or baking plates, leave a generous space between the products you are cooking.
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4.2. Operation procedures
4.2.1. Before cooking
The oven must be preheated to cooking temperature before actual cooking begins. This is to heat the
whole oven to the correct temperature so as to ensure the best possible cooking results.
• Put the guide rails in place.
• Turn the main switch on. The green light turns on.
• Set both thermostats at 250ºC, if the oven is loaded to max. capacity with cold products. (After load-
ing the oven, required roasting temperature is set.) If smaller amounts of products are roasted, the
preheating can be done with the roasting temperature.
• When the door is closed, the oven will remain hot for a long time, even though it is not switched on.
4.2.2. How to select cooking temperature
Cooking time depends on food quality, weight and thickness. The shallower the food to be cooked is, the
shorter the cooking time. See “Cooking tips” later in this chapter.
4.2.3. Usingtheoven
If the oven is used on board a ship, the oven guide rails must be positioned inside the oven so that the clip
which prevents the ovenware from sliding out of the guide is on the door ide. Should the clip be against
the rear wall inside the oven, remove the rails and swap them around.
There is a main supply disconnection switch that was tted near the oven (usually on the wall) when the
oven was installed. Ensure that this switch is in the ON position.
Oven functions are operated from the control panel (see Figure “Control panel switches” in Chapter
“Functional description/Operating principle”).
4.2.4. Cooking
• Carefully preheat the oven as instructed in “Before cooking”.
• Turn the handle to open the oven door. To close the door, push the handle until you hear a distinct
click.
• Put the food in the oven.
• Set both thermostat switches (see Figure “Control panel switches”) at the required cooking tempera-
ture.
• When the products are ready, you can take them out of the oven.
• Switch the power o󰀨 at the main switch (see Figure “Control panel switches”)
• Open the door.
In the event of interruptions in the electricity supply when the proving cabinet is in use, turn all switches
to the 0 position to prevent the proving cabinet from coming on unexpectedly when the power cut has
ended.
In the event of uneven cooking check that
• the oven has been installed horizontally
• the oven has been preheated as instructed
• the cooking temperature is correct
• the cooking pan is correct
• the oven has been correctly lled.

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4.3.2. Steamremoval
The steam exhaust valve (see Figure “Control panel switches”) is normally closed to prevent moisture
from being lost from inside the oven.
If there is too much steam inside the oven (water droplets on the bottom of cake tins), open the steam
exhaust valve to remove the moisture.
The steam exhaust valve should be fully open when roasting and cooking gratin dishes.
4.3. After use
4.3.1. Cleaning
Use of a hose or pressure washer to clean the appliance is forbidden.
Before cleaning the oven, please remember that it remains hot for a long time after use.
Ovens are electrical appliances, which means that there are restrictions regarding cleaning them with wa-
ter. Use of water is permitted when cleaning the oven inside. Clean the outside of the oven with a damp
cloth only to avoid water getting into the air inlets. Depending on how dirty the oven is, use an alkaline
substance which can be diluted in a spray bottle to loosen grease.
Daily cleaning
Spray diluted detergent solution into the inside of the cold (below +50ºC) oven, and on e inside surface of
the door. Heat the oven to about +50ºC (not essential), switch o󰀨 at the mains and let the detergent work
for about 15 minutes. Use a brush or lint-free cloth to scrub the burned places. Avoid the use of steel wool
and abrasive pads and use chemical cleaners instead of mechanical ones. Once a surface is scratched,
dirt sticks to it much more easily.
Wipe the loosened dirt and detergent carefully with a damp cloth. After washing, dry the oven by heating.
After cleaning the inside of the oven, wipe the outside surfaces, knobs and handrail.
Cleaning the guide rails
When cleaning the oven thoroughly, loosen, soak and wash the guide rails. The rails can be easily re-
moved and conveniently washed in a dishwasher.
To remove the guide rails:
• Lift the guide rails upwards.
• Pull the guide rails towards the centre of the inside of the oven.
• Lift the guide rails out of the oven.
Replace the guide rails after cleaning.
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Cleaning of external surfaces of the door
The external glass of the door can be opened for cleaning. Unscrew the two screws shown in the picture
and turn the external glass carefully downward until it stays fully open. Spray diluted detergent solution
onto the door’s metal surfaces between the glasses and onto the glass surfaces. Let the detergent work
for about 15 minutes. Wipe the loosened dirt and detergent carefully with a damp cloth. After cleaning,
return the external glass to its former position. Fit the screws in place and tighten carefully.
4.3.4. Howtochangetheovenbulb
To change the burnt lamp, do the following:
• Let the oven cool so that you can put your bare hand inside the oven without burning it.
• Ensure that the oven is switched o󰀨. All controls should be in the 0 position.
• Unscrew the lens of the oven lamp using your ngers.
• Pull the lamp out of the socket.
• Put a new lamp into the socket. Lamp type: OSRAM Halogen lamp 300°C G9 230V 25W.
• Fit the lens in place and tighten slightly.
Use of the appliance is strictly prohibited if the lens of the oven lamp is broken or not properly in place.
Do not overtighten the lens after replacement of the lamp.
4.3.5. Otherservicemeasures
This appliance does not contain parts which can be serviced by the user. Maintenance must be carried
out by an authorised agent.
In the event of fault or malfunction, switch the appliance o󰀨 at the mains. Use an agent authorised by the
manufacturer and original spare parts.
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5. Installation
5.1. General
The installation of this appliance must be carried out in accordance with the manufacturer’s instructions
and in compliance with local rules and regulations. These instructions must be used together with the
installation drawing.
The connection of the appliance to the electric supply must be carried out by qualied persons only.
5.2. Transporting and unpacking the appliance
The appliance is best transported in its own package, which protects it from outside damage. Should it
be necessary to remove the appliance from its package, the appliance, which is on a support base, must
be moved by lifting by the intermediate bearers of the base. To prevent damage, the top of the appliance
must not be used as a worktop during installation.
5.2.1. Fastening the appliance to the stand
Standard ovens/proving cabinets delivered separately are fastened to the stand with the help of the in-
stallation kit supplied with the appliance.
Prior to fastening the stand, remove the adjustable feet (4 pcs.) located on the appliance bottom. The
feets come loose by turning by hand. Fasten the stand as shown in the illustration below, using the com-
ponents 1, 4 and 5.
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5.2.2. InstallationofaChefovengroup
The appliances can be assembled to form combinations of two or three units by stacking them on top of
each other. The stand height for two units is 660 mm and for three units 200 mm. For assembly of the
oven group a special spare parts kit is necessary. The kit can be ordered separately. Code for the spare
parts kit is 3752352. Refer to your local supplier for details.
Assembly of the oven group can be carried out by an agent authorized by the manufacturer.
1. Nut, 4 pcs
2. Chef oven/proving cabinet
3. Stand
4. Washer, 4 pcs
5. Hexagon screw, 4 pcs
6. Adjustable foot in the bottom of the device, 4 pcs
7. The stand’s adjustable foot, 4 pcs
1
2
3
4
5
6
7

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5.3. Positioning the appliance
When installing the appliance, care should be given to ensure that there is a free passage of cooling air
around the appliance and that there are no other sources of heat near the cooling vents.
Because of the heat and steam arising during cooking, it is recommended to place the oven under an
exhaust hood.
It is important to install the appliance in a level, horizontal position. Tilting and unevenness, however
slight, may have an adverse e󰀨ect on the cooking result.
The appliance must be placed on a at surface and levelled into a horizontal position by using the adjust-
ment screws on the legs. For the best result, check horizontality by the guide rails inside the proving cabinet.
To achieve a horizontal position, adjust the screws on the legs of the stand.
When the device is in the right place and in a horizontal position, it must be xed to the oor, land models
on the anges of the rear legs and models intended for marine use on the anges of each leg.
5.4. Electrical connections
Should maintenance require the appliance to be tested before all the protective coverings are in place,
please be particularly careful of the moving parts inside the casing as well as of live parts.
To facilitate future maintenance and to increase safety, install a separate disconnection switch for the
oven in the immediate vicinity of the appliance. The switch should disconnect the appliance completely
from the mains supply.
The supply cable inlet is in the back right-hand corner of the oven and the connection point inside the
oven. The side casing needs to be open to connect the oven to the mains.
All information needed to connect the appliance is to be found on the name plate, the connection diagram
and the installation drawing.
5.5. Test-run
Please read the safety and operation instructions as well as the functional description before testing the
oven. As for other appliances possibly included in the roasting and baking station, see separate manuals.
Test the oven once it has been connected to the mains electricity.
Check that
• the green oven-on lamp lights up when the oven is switched on
• the orange thermostat lamps light up when the thermostat knobs are turned in a clockwise direction
• the orange thermostat lamp goes out once the oven has heated up and reached the temperature set
• the guide rails are properly in place
• the drip tray is properly in place under the oven door.
Attach the side panel.

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6. Troubleshooting
If the appliance fails to work, check to ensure that
• make sure the plug is connected to the outlet
• it has been used according to instructions
• all removable parts are in place
• the disconnection switch (usually on a wall or in the immediate vicinity of the oven) is in the ON posi-
tion
• the fuses (overload protection) have not blown in the fuse box. Ask a qualied person to check the
fuses.
Should the oven still not work, contact an authorised agent. Before phoning, make sure you have at hand
the appliance type and serial number to be found on the name plate on the right front corner of the ap-
pliance.
This appliance does not contain parts which can be serviced by the user. Maintenance must be carried
out by an authorised agent.
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7. Technicalspecications
Main and control circuit 83689F3
Connection diagram S01311 A1, Chef 200 + Chef 220 + (Chef 220)
Connection diagram S01311 A2, Chef 200 + Chef 220 + (Chef 220)
Connection diagram T01916F, Chef 200 + Chef 220 + Chef 240
Connection diagram T01701B3, Chef 220 + Chef 220 + Chef 220
Installation drawing T01578 C3, Chef 220
Installation drawing T01593 C3, Chef 220
Installation drawing T01594 D3 , Chef 220 + Chef 220
Installation drawing T01595 D3 , Chef 220 + Chef 220 + Chef 220
Installation drawing T01597 D3 , Chef 220 + Chef 200
Installation drawing T01596 D3 , Chef 220 + Chef 220 + Chef 200

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Main and control circuit 83689F3

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Connection diagram S01311 A1, Chef 200 + Chef 220 + (Chef 220)

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Connection diagram S01311 A2, Chef 200 + Chef 220 + (Chef 220)

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Connection diagram T01916F, Chef 200 + Chef 220 + Chef 240

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Connection diagram T01701B3, Chef 220 + Chef 220 + Chef 220

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Installation drawing T01578 C3, Chef 220

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Installation drawing T01593 C3, Chef 220