Berner Hot-Star BHS1 Guide

Operation and instruction manual
Hot-Star BHS1, BHS2, BHS2S, BHS1KTS
Model year >2015
It is absolutely mandatory to carefully read this operation and
instruction manual BEFORE mounting – installation – usage of the
unit. This will avoid risks of damage to you and the unit.
Berner- Kochsysteme GmbH & Co. KG
Sudetenstrasse 5 – D-87471 Durach
Tel. [phone]; Fax. - 15
E-Mail: [e-mail] | www.induktion.de

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Summary
Summary............................................................................................................................. 1
Security indications ............................................................................................................... 3
Security regulations............................................................................................................... 4
Description of danger symbols ............................................................................................. 4
Risks of the non-observance of the security regulations........................................................... 4
Safe usage ........................................................................................................................ 4
Improper usage ................................................................................................................. 4
Modification / usage of spare parts ....................................................................................... 5
Surveillance of the temperature ........................................................................................... 5
General................................................................................................................................ 5
Application ........................................................................................................................ 5
Description of the product ...................................................................................................... 5
Products............................................................................................................................ 5
Technical data ...................................................................................................................... 5
Operation and control ...................................................................................................... 5
Technical data of the unit ................................................................................................. 5
Installation........................................................................................................................... 6
Electrical data of the unit..................................................................................................... 6
Unit with 1,0 – 1,5 kW nominal power................................................................................ 6
Functional conditions........................................................................................................ 6
Installation conditions......................................................................................................... 6
Installation regulations..................................................................................................... 6
Commissioning ..................................................................................................................... 7
Mounting........................................................................................................................... 7
Vapour opening / Regulation................................................................................................ 7
Installation of the unit......................................................................................................... 7
Operation of the Hot Star....................................................................................................... 8
Operation of the Hot Star with core probe sensor (KTS)............................................................. 8
Functionality test of the core probe sensor (KTS) ...................................................................... 8
Operation with KTS ............................................................................................................... 9
Digits and display of operation............................................................................................. 9
Keeping warm.................................................................................................................... 9
Usage of the cooking programmes with core probe sensor (KTS)............................................ 10
Modification of the programmes ......................................................................................... 10
Reset to OEM values......................................................................................................... 11
OEM set programmes and values (OEM set values)............................................................... 11
Decommissioning................................................................................................................ 12
Error detection.................................................................................................................... 12
Troubleshooting .................................................................................................................. 12
Cleaning ............................................................................................................................ 12
Guarantee.......................................................................................................................... 13
Repair during guarantee period .......................................................................................... 13

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Maintenance....................................................................................................................... 13
Disposal............................................................................................................................. 13
Technical documentation I.................................................................................................... 14
Simplified electrical diagram:............................................................................................. 14
Technical documentation II ............................................................................................. 14

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Security indications
The present operation and instruction manual must be read carefully and
completely. Keep the manual for future use by you or by a future owner.
Check the unit after unpacking. If damaged, do not connect to the mains/do
not use. Take written note and pictures of the damage ad contact technical
assistance, otherwise guarantee will be voided. Mounting/installation of the
unit must be made according to and following the indications of the present manual. The
unit must be used only for low temperature cooking and keeping warm of food products.
Surveillance during operation must be guaranteed. Only use in interior, closed
environments, unit is not suitable for external use. Do not insert plastic containers or
accessories as they could overheat and/or melt. The unit is not supposed to be used with
an external timer or a remote control.
-The unit and the interior of the unit get warm/hot. Never put any flammable objects in
the interior. Never store flammable objects inside or on top of the unit.
Risk of burns !
-The unit and the surroundings get warm/hot. Never touch the hot surfaces and keep
children away.
-!If the unit heats, but the display is turned off, please switch power off and contact
technical assistance.
-Please turn power off after every use of the unit.
Risk of electrical shock !
-Improper repairs are dangerous. Only a trained and authorised technician must open
and repair the unit. If the unit is damaged, please switch power off and contact
technical assistance.
-Penetrating humidity could cause electrical shocks. Never clean with a steam or a high
pressure cleaner.
-A damaged unit could cause electrical shocks. Never use a damaged unit. Please switch
power off and contact technical assistance.

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Security regulations
Description of danger symbols
General danger symbol
Non observance means danger ( risk of injuries )
This symbol means dangerous voltage.
(Symbol 5036 of IEC 60417-1)
The danger symbols that are applied directly to the unit must be carefully
respected and their readability must be ensured at all times.
Risks of the non-observance of the security regulations
Danger for people, ambient and the unit itself are caused if the security regulations are
not observed. If the security regulations are not observed, eventual claims for damages
will be rejected.
Details of the risks of the non-observance
(Examples):
- Danger to people due to electrical causes
- Danger to people due to overheating
- Danger to people due to overheated parts
Safe usage
The security regulations of the present manual, the local and national electrical regulations
as well as the work security regulations and the internal work, usage and security
regulations from the employer must be thoroughly respected and followed at all times.
-If the unit is damaged, switch power off and disconnect form the mains. Never touch
any internal or electrical part of the unit.
-The external part of the unit heats up when used at maximum temperature (=130°C),
avoid touching the unit when hot. To avoid the risk of burns, the maximum temperature
should be used only temporarily to disinfect the cooking chamber after cleaning.
-Please do not use the internal floor as a shelf.
-Only use recommended type and size of containers (GN-containers made from stainless
steel).
-Avoid the risk of penetration of liquids into the unit. Never clean with a steam or high
pressure cleaner.
Improper usage
The correct functioning of the unit can be guaranteed only through proper usage. The
indicated maximum levels of the technical data must not be exceed or fall below under no
circumstances.
Attention
Improper usage can cause
injuries or damage!
Attention
Fully read and follow the operation and
instruction manual before installation or
usage of the unit.
Attention: Risk of burns due to overheated parts
After operation (> 60 minutes) at the maximum temperature of 130°C.
Usage of the unit with open door/drawer is strictly forbidden!

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Modification / usage of spare parts
Please contact the OEM-manufacturer if you intend to modify the unit. To ensure security
of the unit, please use only original spare parts and accessories from the OEM-
manufacturer. During repairs and test runs, please make sure the unit is properly
standing on a secure surface.
Surveillance of the temperature
The temperature of the cooking chamber is controlled through a temperature sensor. The
core temperature of the food is controlled through a core temperature probe sensor (KTS
=core temperature sensor)!
General
This operation and instruction manual contains important information regarding mounting,
installation and usage of the unit that need to be respected. It must be read carefully and
completely before installation and usage by the installer and also all operation personnel.
Keep this manual at hand for future consultations!
Application
The Hot-Star units are conceived for the low temperature cooking and for keeping warm of
food products. Use GN-containers made of stainless steel for both applications. The GN-
containers or the food must never touch directly the cooking chamber floor. The unit
controlled through an electronic touch control panel featuring an easy to be cleaned
ceramic glass surface.
Description of the product
Products
-Easy maintenance and cleaning
-Easy and ergonomic operation through touch control panel.
-Compact power and control boards for a reliable usage
Technical data
Operation and control
Digital LED display for „Indication of temperature and time “(red digits)
Electronic touch control panel for easy operation
Technical data of the unit
Dimensions Ext. dimensions Int. dim. Temp. range
Model W x D x H in mm W x D x H in mm
BHS1 400 x 650 x 390 350 x 570 x 285 30° – 130°C
BHS2 400 x 650 x 300 350 x 570 x 195 30° – 130°C
BHS2S 400 x 650 x 300 350 x 570 x 195 30° – 130°C
BHS1KTS 400 x 650 x 390 350 x 570 x 285 30° – 130°C
Model Voltage Nominal power Weight
BHS1 ~230V/N/PE 1,5 kW approx. 35 kg
BHS2 ~230V/N/PE 1,0 kW approx. 30 kg
BHS2S ~230V/N/PE 1,0 kW approx. 30 kg
BHS1KTS ~230V/N/PE 1,5 kW approx. 35 kg
Attention! Before cleaning or repairing the unit, it must be completely disconnected from
mains (pull the plug).

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Installation
Electrical data of the unit
Unit with 1,0 – 1,5 kW nominal power
HOT-STAR single phase (Voltage 230Volt +5% / -10%)
El. Connection
Colour
Frequency
Fuse
Phase
Brown, black or 1
50 Hz / 60 Hz
-
N
Blue or 2
PE
Green/yellow
Functional conditions
omax. tolerance of the mains voltage/nominal voltage +5%/-10%
oFrequency 50 / 60 Hz
oProtection class IP 41
Installation environment
-max. environmental temperature
storage >-20°C to +70°C in function >+5°C to +35°C
-max. relative humidity
storage > 10% to 90% in function > 30% to 90%
Installation conditions
The unit must be positioned/built-in on a straight and even surface, in a horizontal
position. The work top or positioning surface must allow a load of ≥ 100 kg of weight.
Please make sure the unit can be disconnected form mains easily at all times.
Installation regulations
Please carefully follow and respect these regulations:
-Check the voltage on the installation spot and make sure it suits the voltage indicated
on the technical data plate.
-The electrical installation must meet the local building regulations. The national
regulations of the electrical supplier must be followed and respected.
-The unit comes with a power cable with plug that must be connected to the socket.
-If residual current circuit breakers are used, they must be designed for a residual circuit
current of at least 30mA.
-The unit must not be placed on or near a hot surface.
-The operational personnel must ensure that all installation, maintenance and inspection
are made by trained and authorised personnel.
-The unit is equipped with a power cable and plug that meets local regulations.
Make sure the socket is equipped with a protective conductor!
The electrical connection of the unit must follow and respect the
national regulations of the country of installation!
Attention
Wrong voltage could
damage the unit!
Attention
The electrical connections must be made by
trained and authorized personnel.

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Commissioning
Mounting
The unit is equipped with a power cable and plug. It must be connected to a socket. The
electrical installation must be made by a trained and authorised person, respecting and
following the specific national and local regulations. The installation company is
responsible for the correct installation of the unit. The danger symbol plates must be
respected and followed strictly.
Check the voltage on the installation spot and
make sure it suits the voltage indicated on the
technical data plate.
If the unit is installed in the immediate vicinity
of a wall, kitchen cabinets, decorative padding
etc., make sure they are made of non-
combustible material, otherwise they must be
covered with non-combustible, heat-insulating
material and the fire safety regulations must be
followed and respected in the most careful way!
The unit must be placed on a clean, even and straight surface, in its final position. The
regulations of the chapter “Installation regulations” must be fully met.
Remove all packing and protective foils from the unit. Make
sure the cooking chamber is free of accessories and other
objects. Please stop commissioning, if the unit is damaged and
switch power off.
Vapour opening / Regulation
You can regulate the vapour extraction through the
variation of the vapour opening. -> This also helps
to regulate the creation of humidity condensing on
the ceiling of the cooking chamber.
Installation of the unit
The unit is stackable (for safety reasons maximum up to three units)
on top of each other, in order to save space. As an optional, you can
also purchase a wall mounting bracket (see image; BHS).

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Attention
Fully read and follow the operation and
instruction manual before installation or
usage of the unit.
Operation of the Hot Star
If you connect the plug to the socket, the Hot-Star is in standby function and a very small
amount of energy will be consumed. Disconnect if not used to save energy. A short blink on
the display will show the Hot-Star is in standby function. If there is a malfunction or if the
display is blocked and does not accept any selection, please pull the plug to reset the unit.
Reconnect after 10 seconds. If the unit is overheated (improper usage) reconnect after a due
time to let cool down (approx. 2 hours).
The electronic touch control has different digits. Any selection of the digits is confirmed
through a short blink of the LED light in the digit itself. The digits are wear-free and easy to
clean.
To turn „ON“ the Hot-Star, please touch the O/I digit for a few seconds. This avoids
eventual false selections for example during cleaning. The LED light on top of the digit stays
on and the temperature selection is activated. The unit starts the heating to the previously
selected temperature. The BERNER symbol digit enables to directly select the keeping
warm temperature level of 68°C. The arrow digits “UP” or “DOWN” enable to select the
desired temperature. Resting on the relative digits, the temperature selection accelerates up
to steps of 10 degrees until you lift the finger tip from the digit. To turn “OFF” the Hot-star,
touch the O/I digit shortly.
The temperature range is 30°C up to 130°C . The best results are obtained, when the
temperature of the cooking chamber has almost reached the selected temperature; at this
point, insert the food product to be low cooked or kept warm. You don’t have to select a
higher temperature to reduce the heating up time; unlike other producers, the unit uses the
maximum power level to reach the selected temperature as soon as possible. To avoid the
risk of burns, the maximum temperature should be used only temporarily to disinfect the
cooking chamber after cleaning. If the unit is used with the maximum temperature, keep the
door or drawer shut, as the hot air exiting from the cooking chamber could overheat the
electronic touch control panel.
Attention: Risk of burns due to overheated parts
After operation (> 60 minutes) at the maximum temperature of 130°C.
The display shows, alternatively, the selected keeping warm temperature and the
temperature of the cooking chamber. The selected keeping warm temperature is shown for a
slightly longer time than the cooking chamber temperature.
Important suggestion:
It is recommended to insert food having at least the selected keeping warm temperature.
Operation of the Hot Star with core probe sensor (KTS)
Functionality test of the core probe sensor (KTS)
To turn „ON“ the Hot-Star KTS, please touch the
O/I digit for a few seconds. This avoids eventual
false selections for example during cleaning. As
soon as the unit is turned on, a short buzz sound
is heard and the digit can be released.

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Operation with KTS
After a mains power failure, the two decimal points on the display will light up. Please turn
ON and then OFF the unit to reset the decimal point lights.
Any selection of the digits is confirmed through a short blink of the LED light in the digit
itself. The exceptions are the LED lights on top of the KTS digit and L/R digits: The lights
indicate the status during operation sequence.
Digits and display of operation
Keeping warm
To turn „ON“ the Hot-Star, please touch the O/I digit for a few seconds. This avoids
eventual false selections for example during cleaning. As soon as the unit is turned on, a
short buzz sound is heard and the digit can be released. The keeping warm function is
activated, the unit will heat up and maintain the selected temperature. Use digits 5 and 6
to increase/decrease the requested temperature. Resting on the relative digits, the
temperature selection accelerates up to steps of 10 degrees until you lift the finger tip
from the digit.
Touching digit 2 enables keeping warm at the preselected temperature of 68°C. Digit 3
enables the core probe sensor and the relative temperature is shown in the left handed
display. The core probe is not influencing the temperature regulation during keeping warm
function. Touching digit 4 shows, for a short time, the actual cooking chamber
temperature in the right handed display.
! Attention: To select/vary the settings, keep door/drawer shut! The vapour
opening in the backside is usually opened.
Temp. of the core probe
Cooking chamber temp.
(selected/actual) / Timer
O/I digit Berner Logo digit Decrease
Increase
L/R digit
KTS digit
69.
96.

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Usage of the cooking programmes with core probe sensor (KTS)
To recall and start a low temperature cooking program, touch digit 2 for at least 1 second.
The left part of the display now shows step 1 of program 1: "P1.S.1". Touching digits 5 or
6, you can select the program number (P1-P0). Touching digit 2 again confirms the
selected program number, which is signalled through the LED light on top of digit 3. If you
want to start the selected program, touch digit 2 again and the sequence will start. Should
you wish to stop the selected program before its end, please touch digit 1. The function
will return in keeping warm mode. If by mistake you selected the program status, just
touch digit 1 to return to keeping warm mode.
Modification of the programmes
The unit features 10 pre-set low temperature cooking programmes with 3 steps each
(P=program, S=step).
Programs P1-P5 are OEM set, complete cooking programmes (see list below), that can be
modified.
Programs P6-P10 are blank cooking programmes, that can be personalised by the user
(default values are available).
Program mode: please also see the program list with the preselected values.
To recall and start a low temperature cooking program, touch digit 2 for at least 1 second.
The left part of the display now shows step 1 of program 1: "P1.S.1". Touching digits 5 or
6, you can select the program number (P1.S1; P2.S1; P3.S1…-P0.S1). Touching digit 2
again confirms the selected program number, which is signalled through the LED light on
top of digit 3.
In every selected program there are up to 3 cooking steps.
Step 1 Cooking time / cooking chamber temperature
Step 2 Core probe temperature / cooking chamber temperature
Step 3 Core probe temperature / cooking chamber temperature
You can now select, through digits 5/6, the left-handed value of step 1 (P1 S.1). Touching
digit 4, you can switch to the right-handed value, which is signalled through the LED light
on top of the digit. Vary te value through digits 5/6.
Touching digit 3, the next step to be selected is chosen (P1 S.2). Proceed as described
above. Another touch of digit 3 brings you to step 3 (P1 S.3), selection as before. Touch
digit 3 again, and you are at step once again. To exit program mode and save the selected
values, touch digit 1.
If you want to start the selected program, touch digit 2 now and the sequence will start,
which is signalled through the blinking LED light on top of digit 3. Should you wish to stop
the selected program before its end, please touch digit 1.
The running program and its current step will be shown in the left-handed display.
Once the program has run out correctly, the unit will automatically return in the keeping
warm mode.
To turn OFF the unit:
Touching digit 1 during keeping warm mode, the unit will be turned OFF (standby mode).
To disconnect from mains, please pull the plug from the socket. During cleaning or if the
unit will not be used for a longer period (holidays), please pull the plug from the socket.
Should the unit be disconnected or a power failure occurs during program mode, the
program will be continued once mains power is restored. Should you wish to stop the
selected program before its end, please touch digit 1.

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Reset to OEM values
Connect unit to mains power, as soon as "00.00" is shown in the display, touch digit 2. A
buzzer sounds as confirmation of the reset. OEM set values are now restored (all
programmes are now OEM set values again!).
System reboot after a mains power failure:
Connect unit to mains power, as soon as "00.00" is shown in the display, touch digit 6. A
buzzer sounds as confirmation of the reboot (programmes are not affected).
OEM set programmes and values (OEM set values)
Display: Program number: Step number: left value right value
P1S.1 1 1 10 minutes Set temp. = 110°C
P1S.2 i.e. Roast beef 2 KTS 1 = 50°C Set temp. 1 = 80°C
P1S.3 Low temperature 3 KTS 2 = 53°C Set temp. 2 = 65°C
P2S.1 2 1 10 minutes 110°C
P2S.2 Roast beef 2 KTS 1 = 53°C Set temp. 1 = 65°C
P2S.3 overnight inactive - -
P3S.1 3 1 10 hours Set temp. = 80°C
P3S.2 Meat in sauce inactive - -
P3S.3 overnight inactive - -
P4S.1 4 Inactive - -
P4S.2 low temperature 2 KTS 1 = 50°C Set temp. 1 = 80°C
P4S.3 no cooking 3 KTS 2 = 53°C Set temp. 2 = 65°C
P5S.1 5 1 - -
P5S.2 à la carte 2 - -
P5S.3 keeping warm with KTS 3 KTS 2 = 53°C Set temp. 1 = 65°C
Program number 6-11 (OEM set and changeable)
P6S1 6 1 10 minutes 110°C
P6S2 2 KTS 1 = 50°C Set temp. 1 = 80°C
P6S3 3 KTS 2 = 55°C Set temp. 2 = 68°C
P7S1 7 1 10 minutes 110°C
P7S2 2 KTS 1 = 50°C Set temp. 1 = 80°C
P7S3 3 KTS 2 = 55°C Set temp. 2 = 68°C
etc. up to program 10; Display: P0S.1/P0S.2/P0S.3

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Attention
Do not open the unit!
Dangerous voltage!
Decommissioning
If the unit will not be used for a longer period, please pull the plug form the socket. Make
sure that no liquids can penetrate into the unit.
Error detection
The unit must only be opened by trained and authorised
personnel. Please stop any usage if liquids are
penetrated into the unit. Turn it OFF immediately and
pull the plug from the socket. There are no parts inside
the unit that need regular maintenance.
Troubleshooting
Defect
Possible cause
Actions by operator
Impossible to turn unit ON
No mains power, power
cable defect, not
connected correctly
Check whether the unit is connected
to the mains power: Power cable
connected correctly?
Impossible to turn unit ON
Unit is out of order
Please pull the plug from the socket.
Contact technical assistance for
repair
Insufficient heating
One or more heating
elements out of order
Contact technical assistance for
repair
Unit is blocked, display does
not accept any selection.
Unit needs reboot
Unit is overheated
Please pull the plug from the socket
and let the unit cool down for at least
2 hours. Reconnect to mains.
Cleaning
To keep the unit hygienically in good shape and based on the dirtiness of the cooking
chamber, please clean regularly with commercial cleaning products. The best products are
grease-solving dishwashing soaps. Never use aggressive detergents and/or abrasive
sponges to clean the chamber or unit, as they may damage the sealing and the surfaces of
the unit itself. After rinsing clear the surfaces, the unit can be used temporarily at the
maximum temperature (130°C) to dry and sanitize the chamber.
No liquids must penetrate inside the unit
except in the cooking chamber!
List of recommended detergents:
Type of dirt
Detergent
Slight soling
Wet tissue ( Kleenex ®) soaked with some
industrial kitchen cleaner / soapy water
Greasy soling (Sauces, Soups,…)
Polychrom, Sigolin Chrom, Inox cream,
Vif, Cillit Bang, Supernettoyant, Sida
Chalk and water stains
Polychrom, Sigolin Chrom, Inox cream,
Vif, Cillit Bang, Supernettoyant, Sida
Strongly shimmering metallic stains or
discolorations
Polychrom, Sigolin Chrom
Mechanical cleaning
Scraper, non-abrasive sponge

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Guarantee
Buying this BERNER product, you are now owner of a high quality product. As OEM-
manufacturers we guarantee the product for 12 months after date of purchase.
Repair during guarantee period
Please contact your wholesaler/distributor for technical assistance.
Maintenance
The user must ensure that all components that are relevant for security are functional at
all times.
The unit must only be opened by trained and authorised personnel.
Disposal
At the end of the product life cycle, the unit must be disposed of correctly.
Avoid misuse:
The unit must not be used by untrained operators. Units ready to be disposed of shall not
be taken into function again. The unit is composed of commercial electric,
electromechanical and electronic parts. No batteries are installed/used within the unit. The
responsibility for the correct and secure disposal is on the user solely.
Note for disposal
Units to be disposed of can be sent back to the OEM-manufacturer for
disposal from our side. Only sufficiently stamped parcels are accepted.
Delivery address:
Berner- Kochsysteme GmbH & Co. KG
Sudetenstrasse 5 – D - 87471 Durach
Tel. [phone]; Fax. - 15
E-Mail: [e-mail] |www.induktion.de
Attention
Do not open the unit!
Dangerous voltage!
Attention! Before cleaning or repairing the unit, it must be completely disconnected from
mains (pull the plug).

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Technical documentation I
Simplified electrical diagram:
Technical documentation II
Built-in drawings, spare part lists, operation manuals and CE-declarations can be retrieved
here:
www.induktion.de www.induktion.de/download.html
Control electronics with
touch control panel and
LED display
Mains PCB with
power control board
PT1000
Temperature sensor
Cooking chamber
bottom
PT1000
Temperature sensor
Core probe sensor
6 heating elements
with 250W each
(conn. in couples)

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