Welbilt Convotherm 4 Training Manual
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Welbilt Convotherm 4 Training Manual

Combi steamer
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Combi steamer
Convotherm 4
Training manual - Original, ENG

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Summary of Contents for Welbilt Convotherm 4

  • Page 1 Combi steamer Convotherm 4 Training manual - Original, ENG...
  • Page 2        ...

  • Page 3: Table Of Contents

    Service programs     easyDial     5.1.1 Running the Service program     5.1.2 Service values     5.1.2.1 Diagnostic-testing values     5.1.2.2 Read values     5.1.2.3 Control values (adjustable parameters)     Training manual Convotherm 4...
  • Page 4   9.3.5.1 Descaling the boiler     9.3.5.2 Descaling the cooking chamber     9.3.6 Adjustment     9.3.6.1 Testing gas appliances before putting the appliance into use     Check lists - Servicing     Training manual Convotherm 4...
  • Page 5 This chapter provides contact data, shows you how to identify your combi steamer and provides guid- ance on using this manual. Contents This chapter contains the following topics: Page Contact data Environmental protection Identifying your combi steamer Structure of the full set of documentation About this training manual Training manual Convotherm 4...

  • Page 6: Contact Data

    Service documents download centre www.convotherm.com (spare-parts lists, circuit diagrams, Service manuals) Customer service Technical hotline (office hours) (+49) (0) 8847 67 541 Technical Hotline (outside office hours) (+49) (0) 175 405 41 09 e-mail convotherm-service@manitowoc.com Training manual Convotherm 4...

  • Page 7: Environmental Protection

    Use of RoHS-compliant products REACH chemical law Recommendation and use of bio-degradable cleaning agents Recycling of electronic waste Environmentally friendly disposal of old appliances via the manufacturer Join us in our commitment to protect the environment. Training manual Convotherm 4...

  • Page 8: Identifying Your Combi Steamer

    Layout and structure of the type plate (electric appliances) Item Name Name of appliance Combi Steamer Trade name Element Meaning Convotherm 4 appliance series easyTouch controls easyDial controls numbers xx.yy Appliance size Electrical unit with boiler Electrical unit with water injection for appliances with an NSK certificate...
  • Page 9 20.10 (6) 20.20 (7) Year of 2014 (14) manufacture 2015 (15) Month of January (01) manufacture February (02) March (03) Sequential 4 digits number Part number Gas data Country ID Gas category Gas setting for appliance Training manual Convotherm 4...

  • Page 10: Structure Of The Full Set Of Documentation

    Shelf options Maximum load Installation manual The complete technical specification for the combi steamer Installation manual Dimensional drawings and All dimensional drawings and connection points of connection points the combi steamer Checklists Installation checklists Installation manual Training manual Convotherm 4...

  • Page 11: About This Training Manual

    TDs (Technical Documents) Contains information on Service updates and modifications to the appliance. Servicing/cleaning Shows the tools needed for servicing work Shows an example of the service contract Shows an example of the servicing checklist Explains the procedure for descaling the appliance Training manual Convotherm 4...
  • Page 12 The warning notices are categorized according to the following hazard levels: Hazard level Consequences Likelihood Death / serious injury (irreversible) Immediate risk Death / serious injury (irreversible) Potential risk Minor injury (reversible) Potential risk NOTICE Damage to property Potential risk Training manual Convotherm 4...

  • Page 13: For Your Safety

    Basic safety code Warning signs on the combi steamer for table-top units with fixed supporting structure Hazards and safety precautions when replacing appliance parts Safety devices Requirements to be met by personnel, working positions Personal protective equipment Training manual Convotherm 4...

  • Page 14: Basic Safety Code

    Only stand in the working positions specified. Do not make any changes to the combi steamer, e. g. removing parts or fitting unapproved parts. In particular, you must not disable any safety devices. Training manual Convotherm 4...

  • Page 15: Warning Signs On The Combi Steamer

    Warning of hot steam and vapour There is a risk of scalding from hot steam and vapour escaping when the appliance door is opened. Training manual Convotherm 4...
  • Page 16 There is a risk of the appliance connections being damaged or pulled off if the combi steamer is moved. Always ensure there is enough length in the con- necting cables/pipes when moving the combi steamer. After moving, always secure the combi steamer against rolling away. Training manual Convotherm 4...

  • Page 17: Hazards And Safety Precautions When Replacing Appliance Parts

    On the appliance and on adjacent Before putting the appliance back into metal parts use, make sure that the appliance, including all metallic accessories, is On the appliance and on adjacent connected to an equipotential bonding metallic accessories system Training manual Convotherm 4...
  • Page 18 Do not obstruct lower area of equip- ment Only operate appliance in a draught-free environment Training manual Convotherm 4...
  • Page 19 Exercise caution when performing edges these tasks Wear personal protective equipment Risk of hands being When wheeling in transport trolleys or Always use the loading trolley handle pinched loading trolleys when moving transport trolleys or loading trolleys Training manual Convotherm 4...
  • Page 20 Always use the correct number of persons and observe the limits speci- fied for lifting and carrying when ad- justing the appliance position Observe the local occupational safety regulations Wear personal protective equipment Training manual Convotherm 4...

  • Page 21: Safety Devices

    Safety thermostat Switches off the appliance if Test is a software function temperature too high (must be performed solely by an (inside the Boiler authorized and qualified Custom- appliance) Cooking chamber er Service Engineer) Training manual Convotherm 4...
  • Page 22 Close gas shut-off device position and clearly labeled. customer) Check that the appliance is Used to disconnect the appliance isolated from the gas supply from the gas supply during cleaning, repair and servicing work and in case of danger Training manual Convotherm 4...

  • Page 23: Requirements To Be Met By Personnel, Working Positions

    Is an employee of an authorized service engineer company Has relevant professional training Is a qualified electrician Working positions during servicing and repairs The working position for staff during servicing and repair work is the entire appliance area. Training manual Convotherm 4...

  • Page 24: Personal Protective Equipment

    Protective clothing/apron The EC safety datasheet for the relevant cleaning agent contains a more precise specification of these items. An up-to-date copy can be obtained from the manufacturer. Refer to the label on the cleaning fluid concerned. Training manual Convotherm 4...

  • Page 25: Appliance Construction / Modules

    This chapter describes the design and construction of a combi steamer and the modules it contains. Contents This chapter contains the following topics: Page Service hatches Bottom frame Wiring compartment Drain box / collector Boiler Sensor positions / temperature measurement Knowledge test on appliance modules Training manual Convotherm 4...

  • Page 26: Service Hatches

    UI board / SI board / fuses / safety thermostats Appliance drip tray Pump area (cleaning-agent dispensing pump) Pump area Floor hatch (circulation pump / drainage pump for CS chamber) Floor hatch Drain box Left side panel Wiring compartment Training manual Convotherm 4...

  • Page 27: Bottom Frame

    Circulates the cleaning solution. Collector Collects condensate and water from the cooking chamber and closes the system. Drain box Discharges the cooled used water and the cleaning solution; overflow function. Boiler drainage pump Drains the boiler. Training manual Convotherm 4...

  • Page 28: Electric Appliances

    3 Appliance e construction n / modules iring com mpartme 3.3.1 E Electric a ppliance Item Name Functi Check valve Preven nts water flowi ing back into t the clean wate er supply. Dehumidifie er valve Remov ves moisture f from the cooki ng chamber / opens the sys...

  • Page 29: Wiring Compartment

    Generates the ignition voltage / monitors the flame control unit Main gas valve Shuts off gas supply when safety thermostat trips Venturi gas/air mixture Boiler burner assembly Boiler heating element Boiler Steam generation Convection burner assembly Convection heater Training manual Convotherm 4...
  • Page 30 Outlet for exhaust gases Exhaust outlet for convection Outlet for exhaust gases burner Vent for collector box Outlet for moisture removal Please note: The apertures on the top of the appliance must never be blocked or closed off. Training manual Convotherm 4...
  • Page 31 Setscrew for air flow rate Air adjustment Venturi Mixes gas and air. Burner fan Forces the gas/air mixture into the combustion chamber Please note: after assembling or fitting gas components, always check that the system is gas-tight. Training manual Convotherm 4...

  • Page 32: Drain Box / Collector

    Drain box Safety / overflow / waste-water temperature monitoring made of plastic and plugged onto collector box (O-ring) can be removed from below through the floor hatch Training manual Convotherm 4...
  • Page 33 3 Appliance e construction n / modules Drain box Item Name Connection for draining th he boiler Connection for draining th he collection b Screw coup pling for drain probe Connection for appliance drip tray Emergency drain for final check Collector Item Name...

  • Page 34: Boiler

    Screw coupling for boiler sensor (4B4) Insertion tube for boiler safety thermostat (ST) (mechanical ST) (2B8) Insertion tube for surface-temperature sensor for boiler heating element (electrical ST) (4B8) Boiler heating element --> heats the water in the boiler Training manual Convotherm 4...

  • Page 35: Sensor Positions / Temperature Measurement

    60 °C - 80 °C boiler heating element 4B12 Water-level probe Water level in boiler Electrode Drain probe Temperature of waste water Thermocouple sensor 80 °C Bypass sensor Steam temperature Thermocouple sensor 92 °C - 100 °C Training manual Convotherm 4...

  • Page 36: Knowledge Test On Appliance Modules

    3 Appliance e construction n / modules nowledge e test on n applian nce modu ules 3.7.1 E Electric a ppliance es (know wledge te est) Wiring com mpartment, v viewed from m the side of f the applian Item cription Wiring com mpartment in...
  • Page 37 3 Appliance construction / modules Circulation pump / drainage pump Item Name Function Boiler Circulation pump CS-chamber drainage pump Collector Drain box Boiler drainage pump Training manual Convotherm 4...

  • Page 38: Gas Appliances (Knowledge Test)

    3 Appliance e construction n / modules 3.7.2 G Gas appli iances (k k nowledg ge test) Gas compo onents Item Name Functi Training ma anual Convot therm 4...

  • Page 39: Operating Principles

    Variable frequency drive / Motor / Fan Solid-state relay Flowmeter Water circuit Waste-water cooling Closed system (ACS+) Water treatment system / Filter Care Steam generation Steam measurement Cleaning system / pumps Crisp&Tasty Gas appliances / forced-air burner technology Training manual Convotherm 4...

  • Page 40: Variable Frequency Drive / Motor / Fan

    It controls the fan motor of the combi steamer. Motor Drives the fan Circulates the air around the cooking chamber Speeds Frequency Speeds Level 50 Hz 1500 U/min 44 Hz 1320 U/min 38 Hz 1140 U/min 32 Hz 960 U/min 25 Hz 750 U/min Training manual Convotherm 4...

  • Page 41: Solid-State Relay

    An optimum electrical connection must always be provided (no resistance). Must be mounted firmly on a heat sink for cooling. Caution: one current phase is permanently connected to the heater. Item Name Convection heater heatsink Convection heater Training manual Convotherm 4...

  • Page 42: Flowmeter

    4 Operating principles Flowmeter Flowmeter installation position Safety functions: Ensures that the system is closed (ACS+). Ensures that the collector was rinsed after cleaning. Safety during automatic cleaning Flowmeter Make sure it is fitted the correct way round. Training manual Convotherm 4...

  • Page 43: Water Circuit

    (Drains the collection box) Circulation pump (cleaning) Dual solenoid valve Single solenoid valve Recoil hand shower Item Name Micro-switch Recoil hand shower Recoil hand-shower solenoid valve (switch- es off recoil hand shower when shower in coiled position) Training manual Convotherm 4...
  • Page 44 4 Operating principles Filling the boiler Item Name Check valve Water-level probe Boiler water-supply solenoid valve Draining the boiler Item Name Boiler drainage pump Drain box Training manual Convotherm 4...

  • Page 45: Waste-Water Cooling

    Monitors the water flow rates for the collector CS-chamber drainage pump Drains the CS chamber in the collector (system is opened) Circulation pump Used for cleaning (recirculates the cleaning solution) Drain probe (5B3) Measures the waste-water temperature Dual solenoid valve Hard-water supply Training manual Convotherm 4...

  • Page 46: Closed System (Acs+)

    Water barrier in the CS chamber Crisp&Tasty extra function. Smart, active control of air input and output. We control the air output by lowering the water level, letting steam escape. "Lifting the lid off the pan". Training manual Convotherm 4...

  • Page 47: Water Treatment System / Filter Care

    With Convotherm 4, water treatment filters can be connected directly to the combi steamer for monitoring the water quality.

  • Page 48: Steam Generation

    Valve 0 + PS 1 = nozzle clogged / PS faulty (E63.0) Item Name Function for... Flowmeter Pressure regulator Sets the water pressure for steam generation Injection Pressure switch Injection Nozzle Injection Ventilation loop Air disconnect, so ventilation Boiler Water-level probe Boiler Training manual Convotherm 4...

  • Page 49: Steam Measurement

    4 Operating principles Steam measurement Item Name Function Bypass sensor (steam sensor) Water trap / water barrier Training manual Convotherm 4...

  • Page 50: Cleaning System / Pumps

    4 Operating g principles 4.10 Cl eaning s system / pumps Circulation n system Features: Cleaning flui id is used in d dilute form thro oughout the system. Cleaning sol lution is circula ated by the ci rculation pump (clean ning the bypas ss and collecto or in the...
  • Page 51 The canisters must not sit above the level of the surface on which the appliance stands. The level of the surface on which the canister sits must not lie more than 1 meter below the tube connections on the appliance. Cooking chamber mesh in appliances fitted with single-measure dispensing Training manual Convotherm 4...
  • Page 52 Space saving – can be stored separately from the combi steamer Convotherm cleaning products can be added separately Please note: The guarantee is void in the event of damage caused by using cleaning products that are not approved by Convotherm. Training manual Convotherm 4...

  • Page 53: Crisp&Tasty

    Dehumidifier valve Fresh-air supply / low-pressure valve, overpressure valve Vapour outlet Lets steam escape Crisp&Tasty extra function. Smart, active control of air input and output. Activates smart control of air intake to provide 5 levels of Crisp&Tasty. Training manual Convotherm 4...

  • Page 54: Gas Appliances / Forced-Air Burner Technology

    The fan forces the gas/air mixture into the burner mantle. Here the high-voltage ignition system ignites the mixture at the ignition electrode. Combustion of the gas/air mixture takes place in the heat ex- changer between burner mantle and combustion chamber. Training manual Convotherm 4...
  • Page 55 4 Operating g principles General sa afety princip When n a cooking p program star rts, a request t for heat is s sent by the c controller to t the automatic c burner contr ol unit. At the e same time, , a signal fro m the contro oller activates...
  • Page 56 5 mm 10.10 10.5 mm 11.8 mm 5 mm 10.20 10.5 mm 13.2 mm 5 mm 12.20 10.5 mm 13.2 mm 5 mm 20.10 10.5 mm 13.2 mm 5 mm 20.20 10.5 mm 13.2 mm 5 mm Training manual Convotherm 4...
  • Page 57 Burner mantle Distributes the gas/air mixture (produces an enclosed burner structure). Wiring-compartment safety thermostat (Clixer) (2B9) Boiler safety thermostat (2B8) Senses if boiler is too hot. Convection safety thermostat Senses if convection heater is too hot. (2B7) Training manual Convotherm 4...

  • Page 58: Service Programs

    Service programs Purpose of this chapter This chapter describes the Service programs in a combi steamer and gives instructions on how to run the Service program. Contents This chapter contains the following topics: Page easyDial easyTouch Training manual Convotherm 4...

  • Page 59: Easydial

    Please note: Making changes to the Service value settings without suitable technical knowledge may result in damage to the combi steamer. Unauthorized changes in the Service menu may void the guarantee. Training manual Convotherm 4...

  • Page 60: Service Values

    0 or 1 * tronics Heat-sink fan SSR, 0 or 1 * Heat-sink temperature cooking-chamber heater Heat-sink fan SSR, 0 or 1 * Heat-sink temperature boiler heating element ConvoVent low extrac- 0 or 1 * tion rate Training manual Convotherm 4...
  • Page 61 0 or 1 * Spare 0 or 1 * Spare relay 1 230V 0 or 1 * Spare relay 2 230V 0 or 1 * Door mechanism 0 or 1 * * 0 = Off 1 = On Training manual Convotherm 4...

  • Page 62: Read Values

    -4B12 Water-level high -4B12 Filter Care contact Pump input Cleaning-fluid pressure switch -7B0 Main contactor auxiliary switch X23 13.14 Appliance ON/OFF switch Line Monitor TcRef1Temp TcRef2Temp Gas pressure switch Exhaust gas temperature limiter Spare opto 1 Training manual Convotherm 4...
  • Page 63 Collector valve ON time Boiler valve ON time Injection valve ON time Oven light ON time ConvoVent low-speed ON time ConvoVent full speed ON time Dehumidifier valve ON time Door contact switch counter Cleaning profiles version Training manual Convotherm 4...

  • Page 64: Control Values (Adjustable Parameters)

    Fan pulsed mode On 10 - 30 Fan pulsed mode Off 60 - 300 Fan on period 0 - 240 Reduce fan speed 0 - 40 Unassigned Water hardness 1 - 4 Salination factor 100 - 5000 Training manual Convotherm 4...
  • Page 65 CTP 4 offset -8 - +8 Sous-vide offset -8 - +8 Unassigned Filter change message 0 = no message 0 or 1 * 1 = message E10 Filter change indicator Delay in seconds (10 secs) 5 - 480* Training manual Convotherm 4...
  • Page 66 0 or 1 * 1 = water filter connected Water filter (Filter Care) 0 = water-filter NO contact 0 or 1 * NO/NC contact 1 = water-filter NC contact * 0 = Off 1 = On Training manual Convotherm 4...

  • Page 67: Easytouch

    Making changes to the Service value settings without suitable technical knowledge may result in damage to the combi steamer. Unauthorized changes in the Service menu may void the guarantee. Switch on the combi steamer. Press the 'Settings' button on the home page. Training manual Convotherm 4...
  • Page 68 5 Service programs Press the 'Service' button on the 'Settings' page. Enter (1) and confirm (2) the password for the Service menu. Training manual Convotherm 4...
  • Page 69 3 Select Please note: Making changes in the Service menu without suitable technical knowledge may result in damage to the combi steamer. Check the inputs from sensors and switches (Example: live actual temperatures). Knowledge test Password _________ Training manual Convotherm 4...

  • Page 70: Service Menu

    5 Service programs 5.2.2 Service menu 5.2.2.1 Settings tab The 'Settings' tab provides information (technical data) about the appliance and the software. Layout of the 'Settings' tab Training manual Convotherm 4...

  • Page 71: I/O Tab

    ConvoVent low extraction rate ConvoVent full extraction rate Extra fan Rinse-aid dispensing pump Cleaning-agent dispensing pump Spare 1 24V Spare 2 24V Spare 1 Suction pump grease filter Collector solenoid valve Boiler/water-injection solenoid valve Door mechanism Training manual Convotherm 4...
  • Page 72 CTP internal meas. point 3 CTP internal meas. point 4 Sous-Vide sensor internal/external - CTP external Boiler heatsink Condensation unit in exhaust air system Oven heater heatsink Drain Collector Cooking chamber Bypass Boiler over-temperature Boiler Flowmeter Water flow rate Training manual Convotherm 4...

  • Page 73: Status Tab

    5 Service programs 5.2.2.3 Status tab The 'Status' tab lists all the counter and timer values in the combi steamer. Layout of the 'Status' tab Training manual Convotherm 4...

  • Page 74: Gas Tab

    Minimum speed of burner (300 rpm) max burner speed Maximum speed of burner (8000 rpm) Flame µA Current consumption of ionization electrode Actual speed (300 - 8000) Status Current status Burner error message Current fault message Training manual Convotherm 4...
  • Page 75 Functions in the 'Burner settings' page The 'Burner settings' page is a straightforward and convenient facility for selecting the correct presets for the gas type used after changing the gas jet. Please note: fit the correct gas jet first! Training manual Convotherm 4...

  • Page 76: Tools Tab

    (power-cut period in seconds) that must be deducted from the cooking time after the restart. 10 03 Restart with Defines the frequency at which the tracking data 0 - 240 precision is updated in order to launch the restart. Training manual Convotherm 4...
  • Page 77 Please note: boiler appliance: 92-°C / injection appliance: 87-°C 20 18 Steam meas- Used in the quick-steam and steam temperature 80.0 - [°C] urement, quick range. 100.0 steam Please note: boiler appliance: 92 °C / injection appliance: 87 °C Training manual Convotherm 4...
  • Page 78 (Crisp&Tasty level 2). 50 07 Level 3: Dehu- Defines the time period in which the dehumidifi- 0 - 300 midifier valve er valve shall be open open time (Crisp&Tasty level 3). Training manual Convotherm 4...
  • Page 79 Defines the time length of convection heating in 90 - 140 ating: convec- plate regenerating mode. tion time 70 06 Plate regener- Defines the minimum time length for steam 90 - 140 ating: min. time heating in plate regenerating mode. for steaming Training manual Convotherm 4...
  • Page 80 0 - 100 Cleaning Item Name Function Value Default Units range setting 90 01 Resume after Defines the number of attempts to resume 0 - 10 [Quanti- cleaning cleaning when there is a cleaning problem. stopped Training manual Convotherm 4...
  • Page 81 Preheat temp Defines the preheat temperature at which the 0 - 99 [°C] water in the boiler shall be held. 100 12 Limescale Defines whether or not to display the boiler 0 / 1 indicator limescale level. Training manual Convotherm 4...
  • Page 82 110 04 Error message Defines how long an error can be detected at delay for drain the drain box flowmeter before the error can be 65535 box flowmeter displayed. Training manual Convotherm 4...
  • Page 83 Extraction hood Defines the operating mode of an extraction 0 - 2 in standby hood fitted above the appliance (see System mode configuration). The following statements must be used: typedef enum EHStandbyMode_tag EH_OFF_IN_STANDBY, EH_RUN_LOW_IN_STANDBY, EH_RUN_LOW_WHILE_COOKING } EHStandbyMode_t; Training manual Convotherm 4...
  • Page 84 180 02 Vapour Defines the temperature in the condensation 30 - 100 [°C] condenser Off unit (Vapour Reduction System) below which water injection is stopped. Training manual Convotherm 4...
  • Page 85 Drainage pump Defines the length of time for which the 1800 cooling wastewater cooling pump runs when 63535 Crisp&Tasty is active. Default settings The 'Default settings' button resets all the adjustable parameters to the factory presets. Training manual Convotherm 4...

  • Page 86: Troubleshooting

    Contents This chapter contains the following topics: Page The top 5 customer complains according to the Pareto Principle (80:20) Software error messages - summary Cooking programs that can be used in emergency mode - Summary Training manual Convotherm 4...

  • Page 87: The Top 5 Customer Complains According To The Pareto Principle (80:20)

    Reliable and efficient cleaning only possible when using the original Convotherm rinse aids. 3 Incorrect mixing ratio ConvoCare too concentrated 4 Too much foam Selected cleaning level too high 5 Cleaning-fluid canisters Stored at wrong level so may self-empty (Installed at too high a level) Training manual Convotherm 4...
  • Page 88 3 Software version not up to Must be higher than V2.0.0 date 4 P3 spare parts or P3 and C4 spare parts are often incompatible. non-original Convotherm spare parts used 5 SSR not tightened firmly Overheating possible Training manual Convotherm 4...

  • Page 89: Software Error Messages - Summary

    Software error messages - summary Overview The control electronics of the Convotherm 4 includes a self-test system, which displays an error code on the UI-board display when a fault occurs. easyTouch appliances also display a short description of the fault.
  • Page 90 ID error E81.0 Cooking mode not recognized E89.1.x E89.2 E89.3 E89.7 IDM error E89.4.x E89.5 E89.6 E89.8 FRAM error E91.x E92.x SD card error E93.x E97.1 I/O error E99.x Connection lost E99.9 Initialization error E200.x Modbus error Training manual Convotherm 4...

  • Page 91: Cooking Programs That Can Be Used In Emergency Mode - Summary

    Delta-T cooking Combi-steam E22.4.x fewer than two measuring Delta-T cooking Convection points available E22.5.x All functions, EXCEPT: No functions that use the core temperature probe or Delta-T cooking Steam sous-vide sensor Delta-T cooking Combi-steam Delta-T cooking Convection Training manual Convotherm 4...
  • Page 92 E34.0 All functions, EXCEPT: Boiler not rinsed Fully automatic oven cleaning Affects the cleaning process Semi-automatic oven cleaning E35.0 All functions, EXCEPT: Affects the cleaning process and Crisp&Tasty Crisp&Tasty Fully automatic oven cleaning Semi-automatic oven cleaning Training manual Convotherm 4...
  • Page 93 This error message does not exist for this type of appliance and therefore this fault does not restrict use of the available cooking programs (the restrictions listed in the table only apply to the other appliance types). Training manual Convotherm 4...

  • Page 94: Control Electronics

    7 Control electronics Control electronics Purpose of this chapter This chapter describes the controller software in a combi steamer. Contents This chapter contains the following topics: Page easyDial easyTouch System Interface Board (SI board) Controller layout diagram Training manual Convotherm 4...

  • Page 95: Easydial

    Switches the combi steamer on and off ON/OFF switch Full touchscreen Central controls for appliance display Appliance operated by touching icons on the control panel (full touchscreen display) Status displays USB port For connecting a USB stick Training manual Convotherm 4...

  • Page 96: System Interface Board (Si Board)

    Door opener Variable frequency drive 2 Spare outputs for low voltage Signal tower Water treatment AC phase input Appliance ON/OFF switch Smoker Sicotronic Extraction hood AC Neutral 2 input AC relay Spare relay (outputs) Power supply Training manual Convotherm 4...
  • Page 97 Core temperature (REF2) Collector temperature -7B2 PLUS MINUS Drain probe -5B3 Wastewater temperature (PLUS) Wastewater temperature (MINUS) Bypass sensor -5B5 Steam temperature (PLUS) Steam temperature (MINUS) Temperature of heatsink for -4B0 boiler heating element PLUS MINUS Training manual Convotherm 4...
  • Page 98 Automatic burner control unit Boiler (SGND) SD card Identification module (IDM) 3.3 VDC Flash SCL Flash SDA Water-level sensor -4B12 Water level in boiler (HIGH) Water level in boiler (SGND) - spare Water level in boiler (LOW) Training manual Convotherm 4...
  • Page 99 Cleaning-fluid pressure switch (NO) -7B0:COM Cleaning-fluid pressure switch (COM/SGND) -2Q1:14 Main contactor (query 14) -2Q1:13 Main contactor (query 13 / SGND) Gas pressure switch (SIGNAL) Gas pressure switch (SGND) Spare input 1 (SIGNAL) Spare input 1 (SGND) Training manual Convotherm 4...
  • Page 100 PHASE IN Smoker -3E:1 SIGNAL -3E:2 NEUTRAL Sicotronic -X37:A SICOTRONIC (A) >> MAIN CONT OUT -X37:B SICOTRONIC (B) >> SICOTRONIC RLY OUT -X37:C SICOTRONIC (C) >> SICOTRON OPTO IN -X37:D SICOTRONIC (D) >> PRE LINE NEUTRAL Training manual Convotherm 4...
  • Page 101 Input PSU 2 (MINUS/SGND) Input PSU 2 (MINUS/SGND) Power supply 1 -2T0:L 12VDC PSU 1 IN (PHASE) -2T0:N 12VDC PSU 1 IN (NEUTRAL) Power supply 2 -2T1:L 12VDC PSU 2 IN (PHASE) -2T1:N 12VDC PSU 2 IN (NEUTRAL) Training manual Convotherm 4...
  • Page 102 Fuse for oven lamp 1 3.15 A; 12 V Fuse for oven lamp 2 3.15 A; 12 V Fuse for convection 1 burner unit 2 A; 250 V Fuse for boiler burner unit 2A; 250 V Training manual Convotherm 4...
  • Page 103 F8 / 230 VAC POST_LINE_PHASE_IN--> X26:1 HL1 burner power supply BRNR_FAN_RLY_OUT F9 12VDC 1.95A Power None X17 UI board supply permanent Polyfuse (cannot be replaced) F10 / 230 VAC POST_LINE_PHASE_IN --> X26:2 DE burner power supply BRNR_FAN_RLY_OUT Training manual Convotherm 4...
  • Page 104 1s off / 3s on Cleaning mode Permanently on Initially: communications not yet established with UI board Permanently on Later: fatal error Permanently on or off System crash LED6 green Permanently on 3.3VDC LED4 green Permanently on 5VDC Training manual Convotherm 4...

  • Page 105: Controller Layout Diagram

    7 Control electronics Controller layout diagram Training manual Convotherm 4...
  • Page 106 7 Control electronics Training manual Convotherm 4...
  • Page 107 7 Control electronics Training manual Convotherm 4...

  • Page 108: Software Update

    Purpose of this chapter This chapter provides detailed information on updating the controller software. Contents This chapter contains the following topics: Page easyDial software update easyTouch software update Importing cleaning files for easyDial appliances with fully automatic oven cleaning Training manual Convotherm 4...

  • Page 109: Easydial Software Update

    A USB stick. The USB stick must be empty and, ideally, reformatted with the FAT file system. Preparing the USB stick for a software update Follow the instructions in the Download Center: Extract the files into the root directory of the empty USB stick. Never save the extracted files in a sub-directory. Training manual Convotherm 4...

  • Page 110: Software Update

    Press the C-Dial briefly to run the update. Result: The blue light on the C-Dial flashes. After a short time the C-Dial light stops flashing and stays on continuously, and the time counts down to 0. This may take several minutes. Training manual Convotherm 4...
  • Page 111 Wait until the combi steamer has powered up again. Result: The temperature is displayed. The cooking time is displayed. Remove the USB stick. Switch the combi steamer off and back on. Result: The appliance is now ready for use. Training manual Convotherm 4...

  • Page 112: Easytouch Software Update

    A USB stick. The USB stick must be empty and, ideally, reformatted with the FAT file system. Preparing the USB stick for a software update Follow the instructions in the Download Center: Extract the files into the root directory of the empty USB stick. Never save the extracted files in a sub-directory. Training manual Convotherm 4...

  • Page 113: Software Update

    Switch on the combi steamer. Result: The Welcome page is displayed. Plug in the USB stick and wait for 5 seconds. The display shows 'Update is running...'. Wait about two minutes. Result: The software update screen appears. Confirm your selection. Training manual Convotherm 4...
  • Page 114 The update starts running, indicated by a progress bar. Wait until a tick appears beside every update and the OK box is displayed. Please note: If anything other than the OK box is displayed you must restart the entire update process. Training manual Convotherm 4...
  • Page 115 Press OK to confirm the update, and wait until the Welcome page is displayed again. Result: The update has been completed successfully. Remove the USB stick. Switch the combi steamer off and back on. Result: The appliance is now ready for use. Training manual Convotherm 4...

  • Page 116: Importing Cleaning Files For Easydial Appliances With Fully Automatic Oven Cleaning116

    After a short time the C-Dial light stops flashing and stays on continuously. The import process is complete. Remove the USB stick and wait until the C-Dial shows a green light. The appliance is now ready for use. Training manual Convotherm 4...

  • Page 117: Servicing / Cleaning

    This chapter describes what servicing jobs need to be performed by a trained and authorized Service Engineer. Contents This chapter contains the following topics: Page List of tools Multitool Recommended servicing tasks Check lists - Servicing Training manual Convotherm 4...

  • Page 118: List Of Tools

    9 Servicing / Cleaning List of tools Training manual Convotherm 4...
  • Page 119 Water analysis GH and KH Spirit level Recommended tools Item Name Size Ratchet wrench 3,8,10,13 mm Hex socket wrench 24 mm Tools for gas appliances Item Name Size Torx TX25/40 Leak detector Exhaust-gas and pressure meter (Part no. 2617229) Training manual Convotherm 4...

  • Page 120: Multitool

    9 Servicing / Cleaning Multitool The Convotherm 4 multitool is a professional tool for a trained and authorized Service Engineer that is designed to make calibration, adjustment and checking work far easier. The multitool is actually made up of four different tools.
  • Page 121 Requirements Check that the following requirements have been met: The appliance has cooled down. The appliance has been disconnected from the power supply and protective measures taken to ensure the power cannot be switched on again. Training manual Convotherm 4...
  • Page 122 Adjust the catch fastener until the bottom fastener rests fully against the adjustment gauge for table-top units. Re-tighten the fixing screw. Training manual Convotherm 4...
  • Page 123 Slowly close the appliance door until the catch roller rests against the tip of the adjustment gauge. Check the gap between the top edge of the catch roller and the adjustment gauge. The gap should equal at least 5 mm here. Training manual Convotherm 4...
  • Page 124 Make sure you do not alter the vertical position in the process. Adjusting the door gap on table-top units: Hinge side Close the appliance door. The door gap needs to be checked at the top and bottom of the appliance on the hinge side. Training manual Convotherm 4...
  • Page 125 Adjusting the door gap on table-top units: Front section Close the appliance door. Place the adjustment gauge for table-top units in the position shown in the illustration. Check that the door gap lies in the OK range of the adjustment gauge for table-top units. Training manual Convotherm 4...
  • Page 126 Place the adjustment gauge in the position shown in the illustra- tion. Check that the door is flush on both the left and right sideas shown in the illustration. The difference in height must not exceed 2mm. Training manual Convotherm 4...
  • Page 127 Requirements Check that the following requirements have been met: The appliance has cooled down. The appliance has been disconnected from the power supply and protective measures taken to ensure the power cannot be switched on again. Training manual Convotherm 4...
  • Page 128 Re-tighten the fixing screw. Adjusting the door catch on floor-standing units: vertical position Open the appliance door. Place the adjustment gauge for floor-standing units in the posi- tion shown in the illustration. Training manual Convotherm 4...
  • Page 129 Re-tighten the fixing screws. Adjusting the door gap on floor-standing units: Hinge side Close the appliance door. The door gap needs to be checked at the top and bottom of the appliance on the hinge side. Training manual Convotherm 4...
  • Page 130 Check that the door gap lies in the OK range of the adjustment gauge for floor-standing units. Safety thermostat reset for floor-standing units Follow the safety thermostat reset procedure that was described for the adjustment gauge for table-top units. Training manual Convotherm 4...
  • Page 131 Use the adjustment gauge for floor-standing units as shown in the illustration. This lets you undo/tighten the temperature sen- sor for the collector box. This picture has been taken in an appliancethat has been cut open, to give a better view. Training manual Convotherm 4...
  • Page 132 The appliance has been disconnected from the power supply and protective measures taken to ensure the power cannot be switched on again. Examples of use for the spanner Usage: Foot height adjustment for table-top units (1) Usage: Undoing/tightening bolts (2, 3, 6) Training manual Convotherm 4...
  • Page 133 9 Servicing / Cleaning Usage: Opening/closing the suction panel (4) Usage: Foot height adjustment for floor-standing units (5) Training manual Convotherm 4...
  • Page 134 Requirements Check that the following requirements have been met: The appliance has cooled down. The appliance has been disconnected from the power supply and protective measures taken to ensure the power cannot be switched on again. Training manual Convotherm 4...
  • Page 135 Gap between ignition electrode and monitoring electrode Select the gauge arm for the monitoring electrode (arm 4). Place the gas gauge P4 in the position shown in the illustration. Check whether the gap lies in the OK range of the gas gauge. Training manual Convotherm 4...

  • Page 136: Recommended Servicing Tasks

    Adjusting the injection pressure on page 140 Cleaning the injection nozzle Cleaning the injection nozzle on page 141 Descaling the boiler Descaling the boiler on page 143 Descaling the cooking chamber Descaling the cooking chamber on page 148 Training manual Convotherm 4...

  • Page 137: Cleaning The Dehumidifier Valve

    The left-hand side panel has been removed. The dehumidifier valve has been removed. Cleaning the dehumidifier valve Undo the four screws on the dehumidifier valve using a Phillips screwdriver. Remove the top section of the dehumidifier valve. Training manual Convotherm 4...
  • Page 138 (after removing the solenoid and upper part of the valve !). Press the button in the dehumidifier valve several times. Reassemble the dehumidifier valve in the reverse order. Make sure that the seal is clean and intact during reassembly. Training manual Convotherm 4...

  • Page 139: Testing Steam-Generation Injection At The Injection Unit

    Select the Steam main cooking program at 100°, or select the Service value d4. easyTouch: Select the Steam main cooking program at 100°, or press the 'water-injection pressure switch' button under 'I/O' - 'Digital outputs' in the Service menu. Training manual Convotherm 4...

  • Page 140: Adjusting The Injection Pressure

    Pull the adjusting knob outwards to release it (1). Adjust the injection pressure by turning the adjusting knob (2) right or left. Table-top units: 1 bar Floor-standing units: 1.5 bar Press the adjusting knob back in until it locks in place. Training manual Convotherm 4...

  • Page 141: Cleaning The Injection Nozzle

    Undo the top hose clip using a 7mm socket wrench. Remove the hose from the injection nozzle. Use a 17mm open-ended wrench to unscrew the injection nozzle then remove any limescale and dirt from the injection nozzle (may need to blow clean with air). Training manual Convotherm 4...
  • Page 142 9 Servicing / Cleaning Fitting the injection nozzle Follow the steps in the reverse order to refit the injection nozzle. After fitting the injection nozzle, make sure that it is watertight. Training manual Convotherm 4...

  • Page 143: Descaling The Appliance

    The suction panel has been hinged into the cooking chamber. The boiler has cooled down and been drained. The water supply is switched on. easyDial: The appliance is off. easyTouch: The appliance is in the Service menu. Training manual Convotherm 4...
  • Page 144 Please note: never let the heater run dry. Refit the suction panel and left-hand rack. Run the Steam main cooking program at 100° for 10 minutes. Training manual Convotherm 4...
  • Page 145 Feed the tube (with funnel fitted at other end) from inside the cooking chamber into the steam-outlet hole from the boiler. Pour the descaling agent into the boiler (refer to manufacturer’s data for amount). Training manual Convotherm 4...
  • Page 146 Press the 'Boiler/water-injection solenoid valve' button again to deactivate it as soon as water starts running out of the boiler hole in the cooking chamber. Close the appliance door and wait for about 45 to 60 minutes. Caution: risk of chemical burns Training manual Convotherm 4...
  • Page 147 Clean forte). Then rinse out the cooking chamber with plenty of water. Run the Steam main cooking program at 100° for 10 minutes. Use the recoil hand shower to rinse out thoroughly the cooking chamber and the area behind the suction panel. Training manual Convotherm 4...

  • Page 148: Descaling The Cooking Chamber

    30 °C otherwise there is a risk of corrosion. Undo the two fasteners (1) on the suction panel. Hinge out the suction panel to the right (2) into the cooking chamber. Training manual Convotherm 4...
  • Page 149 Wait for about 10 minutes. Repeat steps 3 to 8 several times depending on the level of limescale. Use the recoil hand shower to rinse out thoroughly with water the cooking chamber and the area behind the suction panel. Training manual Convotherm 4...

  • Page 150: Adjustment

    Danger: Risk of explosion in case of leaks. Fire hazard caution: Do not spray any leak detector spray onto electric or electronic components. Check that the extraction system is installed cor- rectly. Training manual Convotherm 4...
  • Page 151 1 = Convection heater 1 2 = Boiler 3 = Convection heater 2 If the CO value > 500 ppm, shut down the appliance and check for the cause of this excessive CO value. Training manual Convotherm 4...

  • Page 152: Check Lists - Servicing

    Clean the nozzle between pressure gage and pressure Clean switch (only for ES / GS) Air-intake box (clean the cooling-fan filter) Clean Cleaning system: Check for leaks in pump housing (behind service flap) Remove Check that circulation system is working Clean Training manual Convotherm 4...
  • Page 153 Replace Gas test (only for GS / GB): Perform gas leak test on gas components (gas sniffer probe, Tighten / replace leak detector spray) Measure CO / CO (at min and max speed) Test exhaust gas Training manual Convotherm 4...
  • Page 154 90°C bypass value) Check electrical safety according to local regulations Check (in Germany BGV A3, VDE 0701 / 0702) Confirmation of servicing Name & company stamp Service company: Date of servicing Name & signature Service engineer Training manual Convotherm 4...
  • Page 155        ...
  • Page 156 Combi steamer Convotherm 4 Additional technical documentation can be found in the download center at : www.convotherm.com Welbilt off ers fully-integrated kitchen systems and our products are backed by KitchenCare ® aftermarket parts and service. Welbilt’s portfolio of award-winning brands includes Cleveland™, Convotherm ®...

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