Bartscher AT90-ST User manual

AT90-ST
120879
Original-Gebrauchsanleitung
V1/1018

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ENGLISH
Table of contents
1.Safety ........................................................................................................................ 24
1.1 Key to symbols..................................................................................................... 24
1.2 Safety instructions................................................................................................ 25
1.3 Use as intended ................................................................................................... 29
1.4 Use against the intended purpose........................................................................ 29
2. General information................................................................................................ 30
2.1 Liability and Warrantees....................................................................................... 30
2.2 Copyright protection ............................................................................................. 30
2.3 Declaration of conformity...................................................................................... 30
3. Transport, packaging and storage......................................................................... 31
3.1 Delivery check...................................................................................................... 31
3.2 Packaging............................................................................................................. 31
3.3 Storage................................................................................................................. 31
4. Technical data ......................................................................................................... 32
4.1 Overview of parts ................................................................................................. 32
4.2 Technical specification ......................................................................................... 33
5. Installation and operation....................................................................................... 34
5.1 Installation............................................................................................................ 34
5.2 Operation.............................................................................................................. 35
5.3 Cooking methods ................................................................................................. 38
6. Cleaning................................................................................................................... 41
7. Possible Malfunctions ............................................................................................ 43
8. Waste disposal........................................................................................................ 44
Bartscher GmbH phone: [phone]
Franz-Kleine-Str. 28 fax: [phone]
33154 Salzkotten Service-Hotline: [phone]
Germany www.bartscher.com
GB/UK

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Read this instruction manual before using and
keep them available at all times!
This instruction manual contains information about the installation, operation
and maintenance of the device and should be consulted as an important source
of information and reference guide.
Awareness of the safety instructions and instructions for use in this manual will ensure
the safe and correct use of the device.
In addition to the information given here, you should comply with any local Health and
safety Controls and generally applicable safety regulations.
The instruction manual forms part of the product and should be kept near the device
and easily accessible for anyone carrying out the installation, servicing, maintenance
or cleaning.
Please keep these instructions and give them to future owners of the device.
1.Safety
This device is designed in accordance with the presently applicable technological
standards. However, the device can pose a danger if handled improperly and
inappropriately.
All persons using the device must follow the recommendations and instructions
in this instruction manual.
1.1 Key to symbols
In this manual, symbols are used to highlight important safety instructions and any
advice relating to the device. The instructions should be followed very carefully to avoid
any risk of accident, personal injury or material damage.
DANGER!
This symbol highlights hazards which could lead to injury.
WARNING!
This symbol highlights dangerous situations which could lead to injury or death.

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HOT SURFACE!
This symbol is a warning that the device surface is hot when in use.
Ignoring this warning may result in burns!
CAUTION!
This symbol highlights dangerous situations which could lead to light
injuries, or damage, malfunction, and/or destruction of the device.
NOTE!
This symbol highlights recommendations and information aimed for effective
and trouble-free device operation.
1.2 Safety instructions
The device is not intended for use by individuals (including
children) with physical or mental disabilities, insufficient
experience, and/or insufficient knowledge unless such persons
are under the care of a person responsible for their safety or
have received instructions regarding appropriate use of the
device.
Children should be observed to ensure that they are not playing
with or starting the device.
Prevent access of children to the package materials like plastic
bags and foamed polystyrene elements. Suffocation hazard!
Never leave the device unattended when in use.
Only use the device indoors.

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The device must be operated in correct and safe technical
condition only. In case of operational problems disconnect the
device from the power supply (pull the plug from the socket) and
contact the service company.
Only a qualified technician and using original spare parts and
accessories should carry out repairs and maintenance of the
device. Do not attempt to repair the device yourself.
Do not use any accessory or spare parts that have not been
recommended by the manufacturer. These can be dangerous
for the user or lead to damages of the device or personal injury,
and further, the warranty expires.
To prevent hazards and to ensure optimum efficiency, no
modifications or alterations to the device that are not explicitly
approved by the manufacturer may be undertaken.
DANGER! Electric shock hazard!
To avoid the hazard results please follow the instructions below.
Never allow the power cable to come into contact with heat
sources or sharp edges. The power cable should not hang over
the side of the working surface. Ensure that no one can step
on or trip over the cable.
The power cable must not be folded, bent or tangled, and must
always remain fully unrolled. Never place the device or other
objects on the power cable.
Do not cover the cable. Keep away the cable from operating
range and do not immerse it into water.

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Check the power cord regularly for damage. Do not use the
appliance if the power cord is damaged. If this cable is damaged,
it must be replaced by customer service or a qualified electrician
in order to avoid dangers.
The supply cable must be disconnected from the socket
only by pulling the plug.
Never carry or lift the device by the supply cable.
In any case do not open the device housing. In case of
electrical or mechanical modifications the electric shock
hazard will occur.
Do not use any acid agents and make sure no water ingresses
the device.
Never operate the device with moist hands or standing on wet
floor.
Remove the plug from its socket:
-when the device is not used,
-in case of anomalies during operation,
-before cleaning.
HOT SURFACE! Burn hazard!
To avoid the hazard results please follow the instructions below.
During operation, the surface of the device becomes very
hot! Do not touch the hot surface of the device with bare
hands! Hold the device during operation only at the handles
and control elements envisaged for this.
Even after switching off the surface of the device and the
cooking space as well as food in the containers remain hot for
quite some time. In order to take out the food from the cooking
space, always apply thermal gloves.

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In the course of opening the convection oven door the hot
steam can may escape, so be particularly careful.
Let the device cool down sufficiently before cleaning it.
WARNING! Fire or explosion hazard!
To avoid the hazard results please follow the instructions below.
Make sure before using the device that there are no objects,
such as plastic bags, instruction manual and accessories,
located in the cooking space. Never place during operation
any kitchen utensils, towels, paper and similar into the cooking
space and on the device.
Make sure that the steam outlet is not blocked or plugged.
Never operate the device in the vicinity of flammable, easily
ignited (e.g. gasoline, spirit, alcohol, etc.). Due to the heat
they evaporate and in case of contact with ignition sources
it can come to explosionen, which lead to serious personal
injury and property damage.
Clean the cooking space regularly and keep it always clean:
fats and baking residues which are not removed, can ignite.
In case of fire and before taking relevant fire extinguishing action,
disconnect the device from the electric power supply (unplug!).
Caution: Never use water for fire extinguishing when the
device is connected to the power supply. Electric shock
hazard!
When the fire has been extinguished ensure sufficient fresh air
inflow.

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1.3 Use as intended
CAUTION!
The device has been designed and built for commercial use and should be
operated only by qualified personnel in kitchen facilities.
Every use of the device for a different purpose and/or in a way that diverges from the
intended use is not allowed and is assumed as the use against the intended purpose.
Any claims against the manufacturer or their authorized representatives as a consequence
of experiencing damage resulting from the use against the intended purpose are
inadmissible.
The liability for damage occurred during the use of the device against its intended
purpose is borne solely and exclusively by the user.
Safety operation of the device is guaranted only when it is used for its intended purpose
and according to the instructions included in this manual.
The convection oven is designed for the following purposes:
-preparation of meat, fish and vegetables;
-baking of bread, cakes and pies;
-heating of food;
-defrosting of frozen products;
-roasting;
-preparation of chilled and frozen foods.
1.4 Use against the intended purpose
Any use other than those mentioned in point “1.3 Use as intended“ is assumed as the
use against the intended purpose and is not allowed.
The use against the intended purpose may lead to severe injury or damage caused by
hazardous voltage, fire or high temperature. It is allowed to use the device to perform
only the work described in the instruction manual. Improper use may cause the device
damage.
Any manipulation with the device, assembly or maintenance work may be performed
exclusively by the authorized service staff.
The convection oven should not be used for:
-heating of premises;
-drying of clothes;
-storage of combustible objects;
-warming and heating of inflammable, hazardous to health, easily volatilizing or
other liquids or substances of similar effect.

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2. General information
2.1 Liability and Warrantees
All the information and instructions in this manual take into account standard safety
regulations, current levels of technical engineering as well as the expertise and
experience we have developed over the years.
The instruction manual was translated with all due care and attention. However, we do
not accept liability for any translation errors. The German version of this instruction
manual is definitive.
If the delivery consists of a special model, the actual scope of delivery may differ from
the descriptions and illustrations in this manual. This is also the case for special orders
or when the device has been modified in line with new technology.
CAUTION!
Read this manual carefully and thoroughly before any operation of the device,
and especially before turning it on!
Manufacturer is not liable for any damages or faults caused by:
-violation of advice concerning operation and cleaning;
-use other than designed;
-alterations made by user;
-use of inadequate spare parts.
We reserve the right to make technical changes for purposes of developing and improving
the useful properties.
2.2 Copyright protection
The instruction manual including any texts, drawings, images or other illustrations
is copyright. No part of this publication may be reproduced, transmitted or used in any
form or by any means without permission in writing from the manufacturer. Any person
who commits any unauthorized act in relation to this publication shall be liable to claims
for damages. All rights reserved.
NOTE!
The contents, texts, drawings, pictures and any other illustrations are
copyright and subject to other protection rights. Any person unlawfully
using this publication is liable to criminal prosecution.
2.3 Declaration of conformity
The device complies with the current standards and directives of the EU.
We certify this in the EC declaration of conformity. If required we will be
glad to send you the according declaration of conformity.

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3. Transport, packaging and storage
3.1 Delivery check
Please check the delivery upon completeness and transport damage immediately
after receipt. In case of visible damage do not accept or accept the delivery with
reservation only.
Note the extent of damage on the carrier’s bill of delivery. Trigger off the complaint.
Hidden damages should be reclaimed immediately after notice, as claims for damages
can only be asserted within the effective period for complaints.
3.2 Packaging
Please do not throw away the covering carton of your device as it might be useful for
storage purposes, when moving or, in case of damages, when the device must be sent
back to a repair center. The outer and inner packing material should be removed
completely from the device before installation.
If you liked to dispose the packing, consider the regulations applicable
in your country. Supply re-usable packing materials to the recycling.
Please inspect the device upon completeness. In case any part is missing please
contact our customer service center immediately.
3.3 Storage
Keep the package closed until installation and under consideration of the outside
indicated positioning- and storage markings.
Packages should be stored under consideration of the following:
-do not store outdoors,
-keep it dry and dust-free,
-do not expose it to aggressive media,
-do not expose it to direct sunlight,
-avoid mechanical shocks and vibration,
-in case of longer storage (> 3 months) make sure you check the state
of the packaging and the parts regularly, if required refresh or renew.

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4. Technical data
4.1 Overview of parts
1
Housing
7
Adjustable feet (4x)
2
Glass door
8
Supporting rails (4x)
3
Main/time control knob (0 –120 min)
9
Baking tray
4
Operation control lamp (green)
10
Internal lighting
5
Heating control lamp (green)
11
Glass door handle
6
Temperature control knob (50 °C - 300 °C)
1
7
2
8
3
4
5
6
9
10
11

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4.2 Technical specification
Description
Convection oven AT90-ST
Code- No.:
120879
Material:
Housing: stainless steel,
baking chamber: Stainless steel
Model:
Functions: convection
Temperature range: 50 °C to 300 °C
Temperature control: mechanical, infinitely variable
Heat-up time approx. 5 minutes ((180 °C)
Timer:
Time setting: 0 –120 min.
Drawers:
-Type: crosswise
-Format: 436 x 315 mm
-Number: 4
-Distance between drawer rails: 70 mm
Number of cooking programmes: 1
Number of cooking phases: 1
Number of motors: 2
Fan speed: 1 setting
internal lighting
Control: Knob
Protection class: IPX3
Indicator lights: ON/OFF, heating
Features:
-Double glazed doors
-Rounded baking chamber
-Removable rails for shelves
-Signal tone after expiry of the time
Power:
2,67 kW / 230 V 50 Hz
Dimensions:
W 595 x D 605 x H 580 mm
Oven chamber
dimensions:
W 460 x D 375 x H 350 mm
Weight:
38.0 kg
Accessories:
4 grill racks
We reserve the right to make technical changes!

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5. Installation and operation
5.1 Installation
CAUTION!
Any installation, maintenance and repair work should be executed only
by an authorized installation engineer!
Positioning
Unpack the device, remove and dispose of all package material according to
the environment protection regulations.
Mount the adjustable feet to the device and set the desired height by screwing the
feets in or out. Do not use the device without installing the adjustable feet.
Place the device on a flat, safe surface which can withstand the weight of the device
and is not heat sensitive.
Never place the device on an inflammable surface.
Do not place the device near open fireplaces, electric ovens, heating stoves or other
heat sources.
Place the device so that the rear ventilation holes were not blocked or covered.
Never locate the device in the direct vicinity of walls, low wall, kitchen furniture, or
other objects. Make sure there is enough distance (at least 30 cm) from walls and
other flammable or prone to discolouration objects. Follow the valid fire protection
regulations.
When it is not possible to leave the recommended distance, use appropriate
protection means (e.g. heat-resistant foil that will ensure keeping the wall
temperature within the safe range (up to 60 °C).
Do not place any objects on the device.
NOTE!
The device is not suitable for built-in installation and series arrangement!

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Remove carefully the protective film from the outside walls so as to avoid adhesive
residues be left. If any adhesive residues remain, remove them with a suitable
solvent.
CAUTION!
Never remove the nameplate and warning signs from the device.
Place the device so that the plug is easily accessible so as to quickly disconnect the
device if the need arises.
Connection
DANGER! Electric shock hazard!
The device can cause injuries due to improper installation!
Before installation and connecting the local power grid specification should
be compared with that of the device (see rating plate).
Connect the device only in case of compliance!
The power supply circuit with the socket must be protected by the fuse of at least 16A.
Connect the device directly to a single grounded socket. Do not use any power bar or
multiple socket.
5.2 Operation
Preparation of the device
Clean the device before start-up from inside and outside with a soft damp cloth and
mild detergent. Rinse it thoroughly with clean water.
Before first use, heat up the device without food, in accordance with the instructions
contained in the chapter "Settings", to eliminate any unpleasant odors that come from
the thermal insulation. Choose the highest temperature and the longest time. A little
smoke or an odor may be generated. This is normal for the first operation and will not
happen again during subsequent use. Then open the glass door so the smoke
residues can escape.
Clean the baking trays and grill grate with mild detergent. Rinse them with clean
water and then dry with a soft dry cloth.

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Settings
NOTE!
Heat up the convection oven well before each use. Set the temperature about
30 °C higher than the specified one and correct it after charging the
convection oven, which will help you to achieve an even result.
Turn the device on by means of main / time control knob (rotate it clockwise to the
desired cooking time). Once you activate the knob, the green operation control lamp
will illuminate and the interior lights as well as the fan motors will be turned on.
Set the desired temperature using the temperature control knob.
The green heating control lamp will illuminate. Once the set temperature is reached,
the green control lamp goes off and lights up again when the temperature in cooking
cavity decreases.
After reaching the set temperature, place the desired food in cooking cavity of
convection oven.
WARNING! Risk of burns!
Some parts of the device become very hot during operation.
Always open and close the convection oven with the help of door handle.
Use protective gloves when you operate the device.
There can be placed 4 baking trays in four slide rails of the convection oven at the
same time. When charging the device keep at least 40 mm distance between the
food and the baking tray above it, in order to maintain optimum heat distribution in
the cooking cavity.
After the preset time elapses a signal sounds, the green time setting lamp goes off
and the device automatically switches off.
Remove the cooked food.
If the device is no longer used, turn it off (set the main / time control knob and
temperature control knob to the "0" position) and disconnect it from the power
supply (pull the plug!).
CAUTION!
The device is equipped with an overheating protection device, which trips at
320 °C and shuts down the device. If the overheating protection device has
tripped, let the device be cooled for some time and press the RESET button at
the rear of the device to bring it back into operation.

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Rules for the roasting/baking process
Roasting process in a convection oven with air circulation
The roasting process in a convection oven is realized with the recirculation of hot air inside
the device. This allows even roasting/baking due to uniform temperature distribution.
The advantage of the convection oven consists in the fact that the different dishes can be
roasted/baked at the same time (when the cooking temperature is the same), without the
risk of mixing different flavors.
Variable parameters during roasting/baking:
temperature
time
amount
Temperature
A precise temperature adjustment guarantees proper roasting/baking of dishes, both on
their outer part as well as inside them.
Too low temperature causes rather drying of food than its roasting.
Too high temperature, however, can lead to burning of the food on the outside, and the
interior still remains raw (a phenomenon that is sometimes desirable, especially in case
of meat).
Time
This variable depends on the amount of food which are to be prepared.
The larger the amount is, the longer the roasting/baking times and vice versa.
Too short cooking times compared to the correct ones do not allow for full preparation of
food; too long cooking times compared to the correct ones lead to burning of food on the
outside.
Amount
The amount of food affects the cooking time. A larger amount of food always leads to
longer cooking times and vice versa.

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Use of baking molds/grill grate
It is recommended to use:
Baking molds of aluminum for pastries and non-frozen bread,
Baking molds of steel for starters, meat, fish, potatoes,
Grill grate for roasting of meat (such as steak, sausages,
bratwursts), frozen products (eg pizza, rolls,
baguettes).
NOTE!
Use only heat-resistant roasting tins or baking molds. Pay attention to the
instructions of the manufacturer!
5.3 Cooking methods
First dishes
Lasagne, pasta bake, Cannelloni should be cooked at a temperature between 185 °C -
190 °C. In order to achieve a golden yellow crust, the temperature at the end of
cooking process should be increased to 220 °C - 230 °C.
Roasting
Beef, pork, chicken, turkey, lamb. Run the process at a temperature of 180 °C to
ensure that the meat is thoroughly roasted. In the final phase, the meat should be
scorched for a few minutes at a temperature of 240 °C - 250 °C to dry out.
Browning of meat
Chop, steak, sausages, hamburgers.
Insert the grill grate together with food to be roasted, slightly smeared with oil. Slide a
drip tray under the grill grate. Roast at 220 °C - 230 °C. In the final phase increase
temperature to 280 °C for a few minutes so that the dishes be slightly browned.
Roast beef
Roast at a temperature of 220 °C.
Fish
Roast plaice, cod, hake at a temperature of 200 °C.

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Roast potatoes
Roast at a termperature of 170 °C -180 °C.
Pastries
Normally, carry out baking at a temperature of 180 °C. Avoid opening the convection
oven door during the baking process.
Bread
Bake at a termperature of 200 °C.
Cooking of frozen products
Let the frozen bread defrost and bake it at a temperature of 200 °C.
Pre-baked, frozen pizza should be slid into the hot oven in still frozen state and be
baked at a given temperature for a few minutes. Follow the instructions of the
manufacturer on the packaging!
Roll/toast
Warm up at 220 °C.
Warming up of the meals
Process the meals at ca. 150 °C.
Defrosting of the meals
Defrost at 80 °C.
Cooking/baking table
Roasted/baked product
Temperature
in °C
Cooking time
in min ca.
Pastries
Cakes
135 –160
depending on the
weight
Biscuits
160 –175
25 –35
Small cakes
175
15 –20
Cakes with
yeast/baking
powder
Cherry cake
175
Fruit pie
220
Puff pastry
210
Shortcrust pastry
200 –225
Cake
175
40 - 50

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Roasted/baked product
Temperature
in °C
Cooking time
in min ca.
Baked goods
Meringues
100
100 –130
Biscuits
175
15 –20
Shortcrust biscuits
150 –175
5
Fruit cakes
200
8
Croissants
180
18 –20
Pudding
Bread/butter soufflé
175 –190
45
Egg custard
165
45
Fruit pudding
160
45
First dishes
Stuffed cannelloni
190
20
Egg soufflé
185
25
Lasagna
190
27
Macaroni soufflé
190
40
Fast roasts
Bratwursts (lean)
225
10 –15 min
Roast joints
225
15 –30 min
Liver
250
10 –15 min
Roast sirloin
250
15 –30 min
Chicken breasts
200
30 min
Meat
Well roasted turkey
* until the last 30
minutes of cooking
160 –175
**during the last 30
minutes of cooking
175 –200
30 min per kg
Lamb pink
Haunch 5 –2 kg
175
50 min per kg
Roast lamb
175
30 min per kg
Lamb shoulder
175
50 min per kg
Thoroghly roasted
pork
Ham more than 2 kg
175
50 min per kg
Loin and shoulder
175
60 min per kg

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Meat
Beef medium
Beef tenderloin 2 kg
175
30 min per kg
Roast beef
175
30 min per kg
Fillet steak
175 –200
20 min per kg
Chicken 2 kg golden
yellow roasted and
stewed
175
50 min per kg
Duck 2 kg with juice, not
dry
180
60 min per kg
Wild
Wild rabbit 2 kg
175
60 –90 min
Deer
170 –200
90 min
Pheasant
175 –200
35 –90 min
Side dishes
Fried potatoes, crispy
175
60 min
Braised potatoes
thoroughly cooked with
sauce
150 –175
30 min per kg
Fish
Fillets (small)
200
15 –20 min
Fish 1 ½ kg
200
30 –40 min
6. Cleaning
WARNING!
Before starting cleaning, disconnect the device it from the power supply
(unplug!).
Leave the device to cool down completely.
The device is not suited for direct washing via water jets!
Protect the device from water penetration.
CAUTION!
Do not use any aggressive or bleaching cleaning agents containing active
oxigen, chlorine or corrosive components.
Do not use any abrasive or scouring cleaning agents, such as steel wool, steel
wool containing soap, metal / plastic sponges or similar agents with abrasive
surface.