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Training Manual

Basics, Maintenance and Accessories

SelfCookingCenter® whitefficiency® (SCC_WE)

CombiMaster Plus (CM_P)

Voltage

Software

Installation

Water quality

Accessories

Air supply Gas

Original components

Flue venting

Type of gas

Drain

General hints:

Isolate the appliance from mains supply before opening the appliance

When working with chemicals, i.e. aggressive cleaning materials always wear protective clothing, goggles and gloves!

After maintenance / repair the appliance must be checked for electrical safety in accordance with your national, state and local requirements!

Whenever working on any gas component like:

Gas valve, gas blower and / or changing connected type of gas a detailed flue gas analysis MUST be done using adequate CO and CO2 measuring equipment! This shall ONLY be done by trained technicians! Always check appliance for possible gas leakages!

© 2011 Rational Technical Services. All rights reserved.

Please note that any technical information concerning Rational products must NOT be forwarded to any third party.

List of content

Basic topics

Company history

Milestone of an extraordinary company history

1973 Foundation of RATIONAL GmbH as a company for producing and selling of hot air ovens in

Germany

1976 Invention of the RATIONAL Combi-Steamer

1993 Opening of plant number 2

1993 Invention of the RATIONAL Clima Combi®

1997 Invention of the RATIONAL ClimaPlus Combi®

2000 Going public RATIONAL AG

2000 CleanJet® – World wide the first full automatic self clean system

2004 Invention of the first SelfCooking Center® of the world

2005 Invention of the first VarioCooking Center® of the world by our daughter company FRIMA. Cooking, roasting, frying, simply better, in one appliance, with double speed.

2008 Opening of the third and biggest plant in Landsberg

2008 CleanJet+Care® – cleaning intelligence for a maximum reliability

2011 Invention of SelfCooking Center whitefficiency with Efficient Level Control

The following subsidiaries were founded:

UK, France, Japan, USA, Italy, Scandinavia, Switzerland, Canada, Spain,

Germany, Russia, Austria, Poland, China, Greece, Middle East and Brasil

Steamer Combi the of History

Structure of serial number

Classic Line, CD, CM, CC

C-Line, CCD, CCM, CCC

CPC Line, CD, CM, CPC

SCC Line, CM, SCC

Combi Master Plus , SCC_WE „whitefficiency“

Serial number

principle Basic

General information about water

Water- / Steam ratio

The conductivity of the connected water should be above 50µS/cm (micro Siemens).

The measured total hardness (TH) is normally higher than the measured amount of Carbonate hardness — calcium or magnesium carbonat (CaCO3, MgCO3).

Should the total hardness be less than the Carbonate hardness, most likely a water treatment system is connected.

Water Analysis

Which values are required?

—Total hardness TH

—Carbonate hardness CH

—Conductivity in micro Siemens/cm

—Ideal: Water analysis with chloride content value

Possible reasons for corrosion

—excessive usage

—ferritic accessories

—rusting water pipes

—cleaning procedure (Unit is not dry over night)

—water

Water Info

Because of continuous examinations of systems for water treatment we would like to offer you some information on different systems.

The given statements are only related to Rational units.

1.Recommended systems for water treatment

A)With pure scale problems in the steam generator we recommend hydrogen-(H+)-Ionic exchanger. This type of filter will extend the intervals between descales by approx. 5 to 8-times of the normal descaling intervals. Please note that even with this type of filter it is still necessary to descale the steam generator.

B)With a high chloride content above 80mg/l of water it is possible, that the interior cabinet will start to corrode. To remedy this problem it is necessary to install a reverse osmosis filter.

C)With chlorine-contents above 0,2 mg/l of water an active carbon filter should be installed, to avoid corrosive radicals when chlorine is heated up.

D)If the water is soiled with sand, iron particles or suspended matter a particle filter with 5-15 μm is recommended.

2.Limited recommended systems for water treatment

Physical systems for water treatment:

On some sites this type of water treatment showed satisfactory results. On other sites there was no positive effect visible. Because of these circumstances we can not make a final assessment of this system.

3.Non recommended systems for water treatment

A)Sodium-Ionic exchanger:

With this filter system calcium is replaced by sodium. On chloride contents of the water above 50mg/l, sodium reacts with chloride to NaCl (=salt). This increase of salt in the water results in a delay in boiling of the water. This delay in boiling can cause ”spitting” steam generators.

B)Silicate-dosing systems:

This kind of systems is problematic, as the adding of non conductive silicates, will influence the water level measurement.

Installation — Duties and responsibilities

Installation

Responsibilities Designer / Architect

Make sure that during construction all dimensions needed are correct and sufficient (Doors, corridors etc)

Make sure that all services (energy, water, drain and exhaust air) are available in immediate vicinity of the unit

1.Drain

2.Water (Pressure, Water treatment)

3.Power supply and breaker specification

4.Gas connection (type of gas, dimension of supply pipe)

5.Vent hood (possible interconnection with gas supply)

6.Exhaust air for gas units (exhaust hood, ventilation ceiling, chimney, spacing between top edge of unit to lower edge of fat filters / ceiling)

7.possible need for levelling device for trolley with sloped floor

Document: Pre Installation checklist

Designer Manual

Installer

Make sure the installation complies with the installation manual (part of starter kit) and the local and / or national legislation / codes

1.Installed horizontally

2.Secured to the ground / stand secured from moving

3.Uneven floor levelled

4.Connected to cold water, possibly treated water, (water line rinsed)

5.Connected to power (equipotential bonding included — where required))

6.Connected to drain (steam temperature resistant pipe, permanent slope, P-trap)

7.Connected to gas supply (correct type of gas), leakage test up to unit connection point

8.Installation of accessories (Ultravent)

9.Testing of electrical safety

Document: Installation manual

RSP, Dealer

Commissioning and hand over to the customer

1.Confirm installation according to installation manual

2.Commissioning

3.Gas unit: Leakage test inside the unit

4.Gas unit: Flue gas analysis

5.Successful completion of Self Test

6.Function test of all components and cooking modes

7.Demonstration of cleaning mode for customer

8.Demonstration of preventive maintenance for customer (daily cleaning)

9.Download of Service Data

10.Photos of installation site

Document: Installation and commissioning checklist

Installation manual

Operator manual

Relationship: Installation — Components — Environment

The unit will only function properly, when all components are designed correctly and the installation is done according to the manufacturers instructions.

Therefore during maintenance and troubleshooting it is mandatory to observe all components together with the connected services such as electricity, water etc. and the kitchen surrounding and venting.

Every deviation from the installation manual can cause different errors.

Preinstallation checklist

Preinstallation checklist

Company name:

Name of contact person:

Street:

City:

Country:

Telephone number:

Fax-Number:

E-Mail:

Number of RATIONAL units already installed:

Serial number of installed units:

How many units shall be installed?

What type of unit shall be installed?

Please fill in the form either by making a tick in the corresponding box or writing down the measured values in the corresponding lines.

All measures, distances, services like electricity, water, drain and gas connection are properly installed and complying with the list attached.

Preinstallation checklist

1. Check all doors and corridors for sufficient space

20×1/1 GN / 20×2/1 GN: 1900mm/75″

Preinstallation checklist

Please fill in values measured at the site:

For calculating the distances see unit sizes on page 2.

If the connection points are at complete different position show the correct position in the sketch

Preinstallation checklist

4. Water supply

Yes No

a) Water treatment system installed

If yes, which system_________________________________________

b)Separate water tap for every unit (Attention: Unit has 3/4” connection)

c)Measured water pressure:_________________________________________________

d)Measured water temperature:______________________________________________

4.Drain

a)Location of drain (fill in page 3)?

b)Material of drain pipe______________

Suggestion for drain connection

NOTE:

Only use steam temperature resistant pipes for drain connection, no hoses!

5.Gas supply (in case of gas units)

a)Which gas type is foreseen?__________________________________________

b)Attention: Unit has 3/4” connection

c)Inform customer to discuss room size and flue gas system with local gas authority

yes no

6. Customer was informed about 2 years warranty?

7. Connection set complete (#60.70.464) required?

7. Comments / Notes

Installation sheet — Electric / Gas units — Electrical connection

Electrical unit connection

61-102

Gas units:

Integrated cable w/o plug top,

length approx. 2,5m,

Remove left side panel

Loosen 7 mm hex head screw

Opening for power cable

Ground connection

Electrical unit connection

201-202

Gas units:

Integrated cable w/o plug top,

length approx.. 2,5m

Remove left side panel

Loosen 7 mm hex head screw

Opening for power cable

Ground connection

Mains supply cable (Observe your local code for maximum cable length)

ELCB Breaker — residual current device 30 mA recommended.

Electrical connection gas units: observe polarity!

All services must comply to local rules and regulations!

Installation sheet — Electric / Gas units — Water connection

Table units 61 — 102

Treated water

Fresh water Fresh water

(common water supply)

Dimension water supply hose: 1/2“ pressure hose with 3/4” connection at the unti; Water pressure:150-600 kPa with 20/25 l/min water quantity

Maximum water temperature for fresh and treated water: 30°C (87°F)

Note:

For selection of water filter please refer to installation manual!

Filter might be necessary in case of:

very hard water (details: Water info and Installation manual)

All services must comply to local rules and regulations!

Installation/Commissioning Checklist

Installation and Commissioning Checklist

To be completed individually for each Rational Combi installation. This checklist is to be completed and returned to your closest RATIONAL office (details are listed on the last page of the operation manual) within 14 days of installation / commission to validate warranty.

Customer name: Contact person: Street:

Town:

Country:

Telephone number:

Fax-Number: E-Mail:

Serial number of installed units:

Commissioned by company:

Date of installation:

Date of commissioning:

Please fill all information required into the embossed fields.

If the measured values do NOT comply with the values in the installation manual please inform the customer and your Rational dealer.

We confirm the installation was done according to the attached installation checklist, the installation manual and all national and local codes which ever may apply. The equipment was handed over free of defects. Operation and maintenance of the equipment was explained.

Installation/Commissioning Checklist

1. Perimeter clearances

Installation/Commissioning Checklist

Installation/Commissioning Checklist

Preventive maintenance

Please fill in one form for every installed unit.

This checklist contains all works that have to be carried out during a maintenance.

Customer address Name

Company

Street

ZIP / Post code

City

Country

Telephone

Serial number of the unit

Software Version:

Preventive maintenance

Make sure the gas compensation hose (hot air and steam) is not kinked and is properly fixed in its correct position.

Preventive maintenance

7.Fill the recommended quantity SLOWLY into the steam generator.

Caution:

Chemical may react violently with scale and cause foaming back though steam inlet port!

8.After filling remove pump and descaler can from cabinet and rinse both cabinet and pump thoroughly with fresh water.

9.Allow enough time for descaler to react

15 % concentration: ~ 1,5 hours,

30 % concentration: ~ 45 minutes

10.Carefully remove moistening nozzle and descale in separate container with descaler liquid. Isolate unit from power supply!

11.Open left side panel, remove quenching box cover and remove any scale / deposits from quenching box and cover.

After reassembly ensure no leaks are present.

12.Reconnect unit to power. After given time (pt.9) use function test to drain liquid from steam generator.

13.Let steam generator fill and drain 3 times.

14.Operate the unit for 15 min. in steam mode.

15.Rinse cabinet again with hand shower.

16.Isolate unit from power and drain steam generator manually to measure the new volume without scale.

17.SCC only: In Basic Settings Pos. 9

press and hold for 5 seconds

“Reset after manual descaling”

Non compliance with this instruction can cause damages to the unit!

In order to determine the amount of scale inside the steam generator manually drain and measure the volume of water from the steam generator.

The steam generator should be descaled when less than the below listed volumes are drained from the steam generator:

1 liter = 0.264gal (US); 1gal (US) = 3,78 liter; 4,5 liter = 4,5 x 0,264 = 1,19 gal(US)

User instruction electrical descaler pump

The descaler pump 60.70.409 (230V) and 60.70.497 (110V) must only be used to fill chemical part number: 6006.0110 into steam generators of equipment bearing either of the following marks on the

data plate:

When working with chemicals, i.e. aggressive cleaning materials, always wear protective clothing, goggles, face mask and gloves!

Please observe all information given on the Material Safety Data Sheet of your descaling chemical!

Only personnel specially trained on handling hazardous materials shall follow the instructions below!

Descaler shall ONLY be filled through steam inlet port inside cabinet!

1.Unlatch the left side hinged rack and the air baffle. Swivel them towards the right side.

2.Insert the pump hose marked with rings into the steam inlet port at the rear left top corner of the interior cabinet.

The hose must be inserted at least to the following marking rings:

To prevent the hose from slipping out of the steam inlet port secure the hook which is attached to the hose at 100cm (40”) from end of the hose onto the air baffle cut out for the core probe as indicated.

3.Insert the suction hose of the pump into the descaling liquid bottle. Please observe the below listed volume of descaler used for the different model sizes. Given volumes are average and dependend on scale build up inside the steam generator.

Descaler volume for electric units (volume in gal given as US gallons!)

User instruction electrical descaler pump

4. Close cabinet door as far as possible and fill the above mentioned volume of descaler at 10 sec intervals into the steam generator

NOTE: Descaling liquid can react very violently with the scale inside the steam generator! Should any foam appear at the steam inlet port stop filling and wash the interior cabinet with fresh water.

5.After filling the required volume remove the hose from the steam inlet port. Pump the remaining liquid from inside the hose back into the descaler container bottle

6.Flush and rinse pump and pump hoses with fresh water. Caution: not rinsing can cause internal corrosion of the pump.

7.Rinse the cabinet with fresh water.

8.Follow the additional instructions detailed in the users manual for completing the descaling proc-

ess.

Non compliance this instruction can cause damages to the unit!

Daily care — Unit and Door Gasket

Exterior surface of unit:

The exterior surface of the unit shall only be cleaned with a wet soft cloth. Aggressive or scouring cleaning agents are not allowed.

Hosing down the unit with water jet or pressure cleaner is also not permitted.

Door glass:

The inner door glass can be opened by releasing the 2 spring clips. Use only a wet soft cloth for cleaning of this surface.

Aggressive or scouring cleaning agents are not allowed.

Door gasket:

Temperatures of 220°C or higher together with continued use of grilling processes demand cleaning of the door gasket several times per day, ideally after every loading.

Carefully wiping down the inner and outer side of the door gasket will extend the life time of the gasket considerably.

Please do NOT use any aggressive, scouring or vinegar-based cleaning agents for this purpose.

Please do NOT run the unit idle at high temperatures for stand by purposes.

Drain of door drip pan

Please make sure the drain of the door drip pan is not blocked by fat or other foreign matter. Rinse daily with water from the hand shower.

Air filter:

Depending on the kitchen environment the air filter should be changed every 3-12 months.

The air filter can be cleaned in a commercial dish washer too.

The air filter for unit sizes 61 — 102 is located under the front panel and can be removed by simply pushing the filter frame backwards.

The air filters of units 201 — 202 are located at the rear left side of the unit and can only be accessed by unlocking the covering frame using e.g. a screw driver. This must not be done by the customer!

Make sure the air filter is properly engaged again after replacing.

Instruction for manual cleaning

For manual cleaning observe the following:

•Follow the safety instructions on the spray bottle and cleaner canister.

•Use only genuine cleaning agents and the genuine hand spray gun (article no.: 6004.0100) from the unit manufacturer.

•Never leave hand spray guns pressurised.

•Never spray other people, animals or objects

Cleaning steps:

1.In case of a high degree of soil inside the cooking cabinet first select steam mode at 90°C and run unit for 10 minutes. Afterwards flush the cabinet with the hand shower.

2.Check cooking cabinet temperature

Should temperature inside the cooking cabinet exceed 60°C, then cooking cabinet must be cooled down below 60°C. To cool down the unit use the function “cool down”.

Hint:

If cleaner is sprayed into a hot cooking cabinet (temperature above 60°C), this will cause permanent staining. To remove staining aggressive chemicals are necessary.

3.Spray cleaner into cooking cabinet

Swivel hinging rack and air baffle to the middle of the cooking cabinet.

Spray cleaner to the space behind the air baffle, into the cooking cabinet, the inner side of the door and the door gasket.

Once complete bring air baffle and hinging rack to original position and lock them.

Warning:

Aggressive chemical fluid – risk of chemical burns.

It is essential that you use: protective clothing, safety goggles, gloves, face mask and the unit manufacturer‘s hand spray gun.

4.Allow cleaner to react for 20 minutes.

5.Select steam mode. Cooking cabinet temperature 90°C, running time 20 minutes.

6.After the running time has elapsed, spray the cooking cabinet thoroughly with the hand shower. Check cleaning result, if necessary repeat steps 3 to 6.

7.Wipe door gasket inside and outside with a wet cloth.

8.Select hot air mode, cooking cabinet temperature 160°C running time 15 minutes.

9.If unit will not be used after cleaning switch off unit and leave cooking cabinet door ajar.

Ultravent (UV)

Serial number:

ET1UVA11095000126

ET2PA11095000133

old:

6606 2 0111 2120

from 09-2011

7262/102 Electric

73201 Electric

Air circulation Ultravent:

Ultravent / Ultravent Plus

The Ultravent has to be connected to a separate power supply.

The Ultravent will be started by the BUS signal. (Combi Duo: The Ultravent is connected to the BUS system of both units.)

The PCB Service part is always equipped with 2 Minifit BUS connections and 2 RJ45 BUS connections.

In case the power supply to the Ultravent or the BUS connection is faulty, Service 35 (SCC_WE) or E35 (CM_P) will be indicated.

If the Ultravent is finally disconnected, it must be deactivated in “Basic Settings”.

Ultravent

As soon as the BUS sends the signal „unit is running“ the Ultravent is running on low speed. When the cabinet door is opened, it will switch to high speed. 1 minute after ending of cooking program the

Ultravent will switch off.

A Ultravent for Combi Duo and Ultravent Plus has 2 fan motors (ref. to circuit diagram below)

Ultravent und SCC / CM Index E-G

The BUS controlled UV is only supported starting with software version 01-07-11 (SCC) and C1.07.01 (CM) accordingly

Ultravent Plus

The UV Plus is equipped with 2 filters. The state of the filter is monitored by differential pressure switches and positioning switches and indicated by 1 LED each.

Filter 1 (pre filter) is located directly behing the front grease filters. In order to extend the life of the main filter (2) and should be changed when the middle LED (LED1) is activ.

Filter 2 (main filter) is located on top of the Ultravent. This filter should be changed when the right LED (LED2) is activ.

Should any of the positioning switches remain open (filter not inserted) the left LED „ERROR“ will show red.

Circuit diagram Ultravent Combi Duo (2 fan motors):