Hobart 6 GN1/1, 10 GN1/1, 10 GN2/1, 6+6 GN 1/1, 6+10 GN 1/1 Operating Manual
...
COMBI OVENS
COMBI PLUS
GAS & ELECTRIC
MANUFACTURERS INSTRUCTIONS
Part C: Operating manual
- WARRANTY
-
To ensure the guarantee on this equipment, you should comply with the MANUFACTURER’S
INSTRUCTIONS in this manual.
However if you cannot undertake the required maintenance operations, our installation and service
network is available to provide you with a personalized contract.
- WARNING
-
•
The product delivered to you complies with current standards. If any modifications are made
the manufacturer cannot accept any responsibility whatsoever.
The manufacturer cannot be held responsible in the event of inappropriate use of the
equipment.
•
This equipment is intended for use by suitably trained professionals.
•
Read all the documentation before user.
•
Keep your documents for future reference.
•
Translation of the original manual
3HE3909
96E
U
Page 1 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
CONTENT
COMBI PLUS
GAS & ELECTRIC
1. RECOMMANDATIONS ........................................................................................................................... 3
2. COMPOSITION OF THE APPLIANCES .................................................................................................. 6
2.1 6 AND 10 LEVEL OVENS ..................................................................................................................................... 6
2.2 20 LEVEL OVENS ................................................................................................................................................ 6
2.3 ACCESSORIES .................................................................................................................................................... 7
3. PRACTICAL OPERATING ADVISE ........................................................................................................ 9
3.1 BEFORE FIRST USE ........................................................................................................................................... 9
3.2 LOAD LIMITS ........................................................................................................................................................ 9
3.3 USING THE SUPPORTS (Runners, modules and trolleys) ................................................................................. 9
3.4 POSITIONING AND STORAGE OF THE CORE PROBE .................................................................................. 10
3.5 USE LIMITS ........................................................................................................................................................ 10
3.6 PREHEATING (20 level oven) ............................................................................................................................ 11
3.7 USE OF OVENWARE ......................................................................................................................................... 11
4. USING THE CONTROL PANEL ............................................................................................................ 12
4.1 GENERAL ........................................................................................................................................................... 12
4.2 GENERAL ACTIONS .......................................................................................................................................... 12
4.3 MANUAL MENU ................................................................................................................................................. 13
4.4 AUTO MENU: Automatic / programmed recipes ................................................................................................ 14
4.5 TOOL BOX MENU .............................................................................................................................................. 18
5. GUIDANCE AND INFO ABOUT THE CONTROL SCREEN .................................................................. 23
6. TOOLS FOR OPTIMAL COOKING ....................................................................................................... 25
6.1 CORE PROBE .................................................................................................................................................... 25
6.2 LOW TEMPERATURE COOKING ..................................................................................................................... 25
8. USB PORT SOCKET ............................................................................................................................. 27
9. ERROR MESSAGES ............................................................................................................................. 28
9.1 ERROR SCREENS ............................................................................................................................................. 28
9.2 ERROR MESSAGES .......................................................................................................................................... 28
10. MAINTENANCE ................................................................................................................................. 29
10.1 INFORMATION ABOUT STAINLESS STEELS .................................................................................................. 29
10.2 THE COMMONEST CAUSES OF CORROSION: .............................................................................................. 29
11. MAINTENANCE OF THE OVEN ........................................................................................................ 31
11.1 MAINTENANCE OF EXTERNAL SURFACES ................................................................................................... 31
11.2 CLEANING THE ELECTRONIC COMPARTMENT VENTILATION OPENINGS ............................................... 31
11.3 CLEANING THE CAVITY GASKET .................................................................................................................... 31
11.4 MAINTENANCE OF INTERNAL SURFACES .................................................................................................... 32
Page 2 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
11.5 MATERIAL USED FOR COOKING CORROSIVE PRODUCTS ........................................................................ 35
11.6 UNLOCKING THE ROTATING DUCT ................................................................................................................ 35
12. LES CONSUMABLES ....................................................................................................................... 36
12.1 GENERAL ........................................................................................................................................................... 36
12.2 CLEANING PRODUCT ....................................................................................................................................... 36
13. GUARANTEE ..................................................................................................................................... 37
Page 3 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
1. RECOMMANDATIONS
♦ These appliances are for professional use, only appropriately trained personnel should use them.
♦ These appliances are 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.
♦ These appliances must be installed with sufficient ventilation to prevent the formation of an excessive concentration
of substances harmful for health within the premises in which they are installed.
♦ The rate of new air required for combustion is 2m3/h per kW of heating power.
♦ The equipment is not designed to work in an explosive atmosphere. Accordingly it must not be installed in an area
covered by the ATEX directive.
♦ Never block the condensate exhaust flue, because the pressure could rise in the appliance and pose a risk of
explosion.
♦ If an error message appears consult the list of error messages and follow the ADVICE given
♦ When cleaning high pressure jets or lances should never be used.
♦ NEVER start the oven WITHOUT HAVING POSITIONED AND LOCKED the ventilation duct.
♦ Do not remove the ventilation duct and the drain grid located in the oven. If this grid is missing do not start the oven.
Drain grid
♦ Always use a qualified technician to install the equipment and if necessary change the oven from one gas to
another.
♦ IMPORTANT: Please be aware that when cooking dishes prepared with alcohol (coq au vin, pears in wine, etc.…).
Vapour saturated with alcohol may when heated cause an explosion in the oven and due to the sealed door, create
a momentary overpressure which may cause an irreversible deformation of the panels. This risk is further increased
when the user adds alcohol to the products near the end of the cooking cycle and closes the door to complete
cooking.
♦ The appliance must be isolated electrically during cleaning or maintenance and when replacing parts.
♦ The control panel is operated via a serigraphic touch screen using your fingers. We recommend the exclusive use of
your fingers and no other items such as knives, forks or spoons etc.
♦ For long term reliability and safety it is advisable to have the unit serviced twice a year by suitably qualified
technicians (Dismantling of burners, inspection and cleaning of venturis, cleaning nozzles, adjustment of air rings,
cleaning vents, checking for possible leaks, checking control elements, regulating and safety accessories…).
♦ The oven must be meticulously maintained on a DAILY basis (see the “Maintenance” chapter). In particular,
the fans, heating elements and walls must be kept clean, without accumulation of grease and mineral
deposits (lime or other).
♦ Preheating (20 level ovens): Whatever the cooking mode, these ovens are designed to be preheated with the trolley
in place. See « Practical operating advice ».
♦ Using a trolley or preheating plate (optional) is compulsory for automatic cleaning of 20 level ovens.
♦ It is strictly forbidden to open the door of the oven during the cleaning cycle.
♦ Never place the core probe behind the ventilation duct (the probe could be damaged by the fan, an element or the
gas heat exchange).
Page 4 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
♦ THE APPLICATION OF ANY CLEANING PRODUCT ONTO A HOT SURFACE, OVER 60°C, IS STRICTLY
FORBIDDEN. The surface will be damaged beyond repair (darkened, virtually black).
♦ Combination ovens should be cleaned with specific products which can resist temperature of up to 70°C. An
inappropriate cleaning or descaling product may have a slightly corrosive effect.
♦ The detergent chemical risk should not exceed 3 in accordance with EN 1717 (Toxicological information FDS: LD50
> 200mg/kg).
♦ We strongly recommend the use of cleaning products supplied by the manufacturer to ensure good results and
optimize the service life of its components.
Except for the UK market: No detergent product is recommended or supplied. Any detergent used with this
appliance must have been verified to represent no greater risk than Fluid Category 3. If the detergent used
represents a Fluid Category risk greater than Fluid Category 3 alternative backflow protection to the double check
valve supplied with the appliance will be required immediately upstream of the appliance. The backflow protection
used must be appropriate to the risk posed by the detergent.
♦ For maximum efficiency of the descaling product without damaging the material and components of the oven, you
should use an appropriate descaler. The use of certain acids has an irreversible destructive effect that may cause
significant damage. The descaling product must contain corrosion inhibitors to prevent metal attack. It must also
comply with legal requirements, in particular for material intended to come into contact with foodstuffs.
Chemical products containing nitric acid are strictly prohibited. Recommended composition:
- Phosphoric acid <50%
- Corrosion inhibitor
♦ The automatic cleaning system is exclusively designed to achieve an introduction of cleaning and degreasing
chemical. Never use a descaling agent. This would damage the hydraulic system of the oven irreversibly.
♦ The manufacturer certifies that the packaging meets the provision 94/62/CE (relating to packaging and packaging
waste of 20.12.94) and requests that the final installer (or user) observes the rules relating to the removal of the
packaging (recycling or reuse).
♦ « According to article 6 of the decree of 20 July 2005 a marking giving the identity of the manufacturer and the
market release date must appear on equipment after 13 August 2005».
« The Manufacturer has filled in the National Register. »
As per the legal provisions in force (article 21 & 22 of the decree 2005-829), the customer is responsible for the
obligations relating to the elimination of electric and electronic waste, namely:
- he is to deal with selective treatment, reconditioning and destruction of residue arising from electric and
electronic equipment, selectively collected in the installations meeting the technical requirements or in any
other installation authorised for the purpose, in another member State of the European Union, or in another
State so far the transfer of these residues out of France is made according to the provisions of the
Regulation of 1st February 1993 indicated above.
- he must make sure that all fluids of electric and electronic equipment are drained according to the
requirements of the provisions.
- he must make sure that the information relating to the removal and treatment of these residues is forwarded
to any further acquirer.
♦ The warranty will not cover problems caused by failure to comply with these recommendations
Warning! Danger! Caution!
♦ Cooking appliances may reach 250°C. BE CAREFUL not to burn yourself when using or handling INNER
ACCESSORIES (Plates, modules, filter, duct...).
♦ The surface temperature of the door can exceed 60°C. BEWARE OF THE RISK OF BURNS.
♦ Loading and unloading containers and ovenware: The height of the top shelf or runner can be 1.75 m. If
unloading manually be careful. ATTENTION: splashes and spillages pose a risk of scalding.
♦ When using the core probe be aware that it can be very hot, always use suitable protection to avoid burns
♦ Remember the dangers identified on the safety data sheet for detergent
- Harmful if swallowed.
Page 5 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
- Can result in serious burns.
- Irritates the eyes.
- Irritates the respiratory tracts.
- Risk of serious eye lesions.
♦ Danger of irritation to the skin and eyes or acid burns.
Detergents will cause irritation and possible burns if in direct contact with the skin or eyes.
- Do not inhale the mist or spray
- Avoid direct contact with these products
- Never open the oven door during the automatic cleaning cycle
- Wear protective clothing, gloves and hermetic protective goggles in accordance with the safety data
sheet.
♦ Remember the safety advice provided by the safety data sheet for each detergent
- Do not eat or drink when using these products.
- Do not inhale their vapours.
- If case of contact with eyes rinse immediately with plenty of water and seek medical advice.
- Wear appropriate protective clothing, gloves and face and eye protective gear.
- In the event of an accident or sickness seek immediate medical attention
- Dispose of the product and its container as hazardous waste.
Page 6 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
2. COMPOSITION OF THE APPLIANCES
2.1 6 AND 10 LEVEL OVENS
Motorised vent valve
Double glazed door
(unlocked from the inside)
Runners
Cavity seal
Control panel
Door handle
Wire or sheet duct
Data plate
(visible with the
door open)
USB port
Oven legs
height
adjustable
Door channel
2.2 20 LEVEL OVENS
Motorised vent valve
Cavity seal
Double glazed door
(unlocked from the inside)
Control panel
Door handle
Sheet duct
USB port
Access door
Data plate
(visible with the
door open)
Door channel
Oven legs
height adjustable
Page 7 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
2.3 ACCESSORIES
2.3.1 6 LEVEL OVENS
Runners 8 level GN1/1 stand Rolling Spray Kit
GN1/1 Stand Door Kit
2.3.2 10 LEVEL OVENS
GN1/1 Banqueting
runner Device
GN1/1 Runners Trolley
spaced 65
GN2/1 Runners Trolley
spaced 65
GN1/1 Banqueting Trolley
30 plates spaced 66
GN1/1 runners kit
20 level
GN2/1 Banqueting
runner Device
GN1/1 Banqueting
Trolley Table
GN2/1 Banqueting
Trolley Table
GN1/1 stand GN2/1 stand
GN1/1 Stand Door Kit GN2/1 Stand Door Kit
Banqueting isothermic Hoodt
Page 8 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
2.3.3 20 LEVEL OVENS
GN1/1 Banqueting Trolley 60
plates spaced 66
GN1/1 Banqueting Trolley 40
plates spaced 100
GN2/1 Banqueting Trolley 102
plates spaced 75
GN2/1 Banqueting Trolley 78
plates spaced 100
Banqueting isothermic Hood Banqueting isothermic Hood Banqueting isothermic Hood Banqueting isothermic Hood
GN1/1 Runners Trolley spaced
65
GN2/1 Runners Trolley spaced
65
Grease Filter Kit Preheat Plate
Banqueting isothermic Hood Banqueting isothermic Hood
2.3.1 ALL MODELS
Core Probe Kit Delicate
products 1 pt dia.1.7x100mm
Core Probe Kit Standard
3 pts dia.4.5x100mm
2x10m PT100 Recorder
Connection. Kit
Energy Management
Connection Kit
Independent Spray Kit
USB Socket Kit GN1/1 Kit 3 grills GN1/1 Kit 5 grills GN2/1 Kit 5 grills
Page 9 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
3. PRACTICAL OPERATING ADVISE
3.1 BEFORE FIRST USE
After manufacture units are tested and their accessories and instruction manuals put inside the oven cavity.
A thorough clean should be undertaken before use.
Using domestic washing up liquid and hot water will give good results, rinse thoroughly and dry.
3.2 LOAD LIMITS
Attention: For your safety and that of the equipment always comply with these load
limits.
Model Maximum quantity Support
6 level GN 1/1 24 Kg Runners
10 level GN 1/1 40 Kg Runners and Banqueting or runners trolley
10 level GN 2/1 80 Kg Runners and Banqueting or runners trolley
6+6 level GN 1/1 24 Kg (per cavity) Runners
6+10 level GN 1/1 24 Kg (upper oven
40 Kg (lower oven)
Runners
Runners and Banqueting or runners trolley
20 level GN 1/1 80 Kg Banqueting or Runners trolley
20 level GN 2/1 160 Kg Banqueting or Runners trolley
3.3 USING THE SUPPORTS (Runners, modules and trolleys)
3.3.1 SUSPENDED RUNNERS
On 6 and 10 level ovens
To remove the suspended runners from each side of the oven
cavity:
- Lift gently by the middle.
- Then lift off the front and back pegs
- Swing the runners towards the middle of the oven and
remove them.
Attention: if a core probe kit is fitted remove this before removing
the right hand runners
To refit reverse the above instructions
3.3.2 RUNNER OR BANQUETING TROLLEYS
On 10 level ovens
Remove the suspended runners as explained in the paragraph
« Suspended runners ».
- Locate the rolling frame in the base of the oven
Attention: the oven must be at the exact same height as
the trolley table.
- Move the table transporting the runner module or
banqueting frame so it is in front of the oven.( Always
ensure the module is securely locked in place during
transport)
- Position the trolley in front of the oven and release the catch
- Push the module onto the rolling frame.
To remove it reverse these instructions
Page 10 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
On 20 level ovens
- Place the trolley in front of the oven.
- Push it carefully into the cooking cavity
3.4 POSITIONING AND STORAGE OF THE CORE PROBE
♦ Do not put the core probe behind the ventilation duct (risk of severe deterioration
against a fan, a heating element or the gas heat exchange).
♦ When using the core probe, NOTE it may be very hot. Use appropriate protection if
there is a chance it may be hot.
No cooking or with a core temperature not programmed:
Ovens with runners:
Store the probe in the holder on the runner
upright if it isn’t being used (see drawing
opposite).
Ovens with trolley (20 level)
Store the probe in the holder provided on the
ventilation duct (see drawing opposite).
During cooking or with a core temperature programmed:
Oven fitted with a module or trolley
Always inset the probe from the centre rear
to avoid it being pulled out when the trolley is
removed
3.5 USE LIMITS
Internal oven capacity:
MODEL 6 GN1/1 10 GN1/1 10 GN2/1 6+6 GN 1/1 6+10 GN 1/1 20 GN1/1 20 GN2/1
GN 1/1 trays (325 x 530) 6 10 20 6 + 6 6 + 10 20 40
GN 2/1 trays (650 x 530) - - 10 - - - 20
Number of levels 6 10 10 6 + 6 6 + 10 20 20
Spacing between levels (mm) 83 67 67 83 83 / 67 67 67
6 / 10
level
ovens
20 level
ovens
Page 11 3HE390996EU – 01/17
HOBART GmbH
Registered office:
Robert Bosch Str. 17,
77656 Offenburg - Germany
IMPORTANT: The number of levels used for the product to be cooked, as well as the number of portions to
be placed on a given level should comply with the following rules.
15mm between cooked products
and the plate above
min 15mm between
cooked products
min 30mm between
cooked products and
the tray edges
NOTE: Depending on how these rules are observed, the number of levels used can be reduced (example: 1 level out of
2) depending on the size of the products treated.
UNEVEN COOKING OF PRODUCT ON TRAYS ARISES FROM THREE FACTORS:
LOAD:
Even cooking requires the correct circulation of air between products. These, when cooked, must be
sufficiently spaced to allow this.
Too big a load may lead to excessive moisture, generating cooking differences.
TEMPERATURE:
- Preheating: The shorter and more delicate the cooking (less than 15 min), the closer the preheating
temperature should be to the cooking temperature.
- Cooking temperature: It is always better to have a lower temperature than a higher one. In case of
problems, lower temperature in 10°C steps.
DISCHARGE OF EXCESS STEAM:
Whilst cooking products loose a proportion of their moisture as steam. If this amounts to more than the oven
can discharge this will result in uneven browning and inconsistent results.
reduce the load to obtain good results (after selecting Convection mode with Vent open)
3.6 PREHEATING (20 level oven)
Irrespective of the mode, these ovens are intended to be preheated "AWITH THE TROLLEY IN PLACE or
with the optional "Preheating plate fitted".
If a trolley or the optional plate is not available:
- Dry mode:
Adjust the required preheating temperature, but stop the oven or put the trolley in place, once
the REQUIRED TEMPERATURE is reached.
- Combi mode:
DO NOT USE. Always preheat in DRY mode to the required temperature (see above). Move
to Combi mode for cooking with the trolley in place (Instantaneous steam production)
- Steam mode /
Injection oven
:
DO NOT USE: Always preheat in DRY mode to 105°C. Switch to Steam for
cooking with the trolley in place (Instantaneous steam production)
- Steam mode:
Preheat the boiler only FOR THE FIRST USE OF THE DAY then stop heating or put the
trolley in place when the oven reaches a TEMPERATURE OF 80°C (Steam coming out of
the base of the oven) (Equajet boiler model).
NOTE: The NON-OBSERVANCE of these RECOMMENDATIONS will create problems for which the Manufacturer
cannot be held responsible.
3.7 USE OF OVENWARE
* PASTRIES / VIENNOISERIE: Use backing trays for pastry
* ROASTS: Use gastronorm containers for meat preparations in sauces or for braising….
For roasting, cook the products directly on the grills (chicken, roast beef, sausages….). In this case
place a gastronorm container (20mm deep) on the bottom level to catch the cooking juices.
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