Rational SelfCookingCenter whitefficiency, SCC_WE Training Manual
Training Manual
SelfCookingCenter® whitefficiency® (SCC_WE)
V02 en, SCC_WE
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
ue 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
Introduction
Basic principle SCC_WE 4
Parts location 5
Changes of the unit 9
Operator panel SCC_WE 10
Operator panel SCC_WE: Manual Modes 11
Survey Pictogram 12
Water level control steam generator SCC_WE 16
SC (Self Clean) Automatic 17
Control panel SCC_WE and display
SCC_WE Electric (Index H): Basic principle 18
Manual modes SCC_WE / Boiling point recognition 19
Control (1)
Selftest 20
Humidity control SCC_WE 22
SCC_WE CPU 24
SCC_WE CPU - Terminal connection - LED Code 25
SD card - Changing PCB, new SD card 26
V02 en, SCC_WE - 2 -
List of content
Control (2)
Fan motor SCC_WE Line 29
Bus connection 30
SolidStateRelay (SSR) internal design / Test 31
SSR 100% - 50% power at 3NAC/400V 32
SSR 100% - 50% power at 3AC 200-240V 33
Control of cooling fan 34
Control of drain valve 35
CDS 36
CareControl 37
Function during CleanJet+Care 38
Service Package
CleanJet: Error messages - Abort program 39
Diagnose - Real Time Data - Start 40
Diagnose - Real Time Data - Content 41
Diagnose - Running times - Start 42
Diagnose - Running times - Content 43
Diagnose - Service error history - Start 44
Diagnose - Service error history - Content 45
Basic settings - Start 46
Basic settings - Content 47
Function test - Start 48
Function test - Content 49
Calibration - Start 50
Calibration - Sequence 51
Setting Show mode - error analysis 53
Error message Service 1 - 25 54
Error message Service 26 - 37 55
Error message Service 40 - 120, blink code motor 56
SCC Software update 57
Download of service data 60
Download of HACCP Data 64
Circuit diagram
Circuit diagram 101 Power 3NAC 400-415V 66
Circuit diagram 101 Heating 3NAC 400-415V 67
Circuit diagram 101 Sensor 68
Circuit diagram Bill of material 69
Circuit diagram 202 Power 3NAC 400-415V 71
Circuit diagram 202 Heating 3NAC 400-415V 72
Circuit diagram 202 Sensor 73
Circuit diagram Bill of material 74
- 3 - V02 en, SCC_WE
Basic principle SCC_WE
B1
Solenoid filling
Y1
S11
Steam element
Steam generator
Solenoid
moistening
Y3
Solenoid
quenching
Water supply
S2
Level
electrode
Thermocouple
steam generator
Self Clean (SC) pump
Solenoid
Care
Y4
Y2
Check valve
B5
F3
Care
B2
Drain
Safety
thermostat
steam generator
M4
M12
Care pump
Thermocouple
quenching
Venting pipe
S12
M7
Emergency drain
Drain valve
Differential pressure
sensor
P1
Clima valve
Fan motor
Thermocouple humidity
B4
Quenching box
M6
Thermocouple cabinet
Y5
M1
Hot air
element
Door contact switch
Safety thermostat cabinet
F4
Core probe
Air baffle
S3
Hand shower roll guide
B3.1 - 3.6
Cabinet
V02 en, SCC_WE - 4 -
Parts location
Solenoid humidity (Y5)
Differential pressure sensor (P1)
safety thermostat
steam generator
(F3)
level electrode S2
Thermocouple steam
generator (B5)
safety thermostat
cabinet (F4)
CDS (S11)
triple solenoid
Y1 lling - Green
Y3 moistening - Brown
Y4 Care valve - Orange
- 5 - V02 en, SCC_WE
Parts location
Quenching nozzle and
Thermocouple B2
Drain valve
(M7 and S12)
Main contactor (K1)
Noise lter (Z1)
SSR (V1-)
CleanJet Pump
(M6)
SC Pump
(M4)
Solenoid Y2
quenching
Loud speaker T2
V02 en, SCC_WE - 6 -
Parts location
Interface PCB (A1)
TFT Display
Puls generator
(S6)
CPU (A2)
Door contact
switch (S3)
Care Pump
(M12)
- 7 - V02 en, SCC_WE
Hand shower roll
guide
Parts location
Safety thermostat
cabinet (F4)
Cabinet sensor B1
CleanJet
nozzle
Steam inlet
Union nut
Moistening nozzle
Fan wheel
Hot air hea-
ting element
V02 en, SCC_WE - 8 -
Changes of the unit
Differences from SCC_WE (Index H) compared with SCC Index G
1. Unit self test after installation; all components are tested for correct function and determination of
boiling point;
2. Steam mode preset to boiling point (no hot air supply), 30-130°C possible (86 - 266°F)
3. New humidity control (Clima valve) for advanced dehumidification
4. New fan motor rotates left - right
5. New PCB and TFT touch display with Ethernet connection
6. Moistening nozzle integrated into hot air heating element flange of electric units
7. Modified cover for quenching box
8. Cooling fan is temperature controlled
9. Cleaning program „Light“ is split into „Light Quick“ duration approximately 1h 05min and
„Light standard“, duration approximately 1h 46min.
10. Operator and Application manuals are available on display;
- 9 - V02 en, SCC_WE
Operator panel SCC_WE
ON/OFF switch
Manual Modes
SCC-Processes
ELC-Key: Activation Efficient Level Control
Program Key: Activation Programming mode
Function Key: Activation personal settings & Service
Help Key
Care Key
Central Dial
V02 en, SCC_WE - 10 -
Operator panel SCC_WE: Manual Modes
Home - back to general display
Efficient Level Control
Humidity setting
Temperature setting
Time setting
Core probe setting
Pre heating
Time: continuous
Moistening
Fan wheel speed setting
Cool Down
Steaming at boiling point (no hot air)
- 11 - V02 en, SCC_WE
Survey Pictogram
Poultry
Large roast
Fish
Egg dishes / Desserts
Side dishes
Bakery products
Finishing
Home - back to general display
Back to previous level
Efficient Level Control
Function key
Settings
HACCP download
Communication (pictures, USB, IP, Sound)
Service
Display configurator
Record Modus (calibrated products)
Store
V02 en, SCC_WE - 12 -
Survey Pictogram
Start Service Level
Date and time
Start time
Time format 24h
Time format am / pm
Temperature setting °C - °F
Half energy
Confirm
Operator and Application Manual
Safety advice
CleanJet +Care
Care Control
Setting ring tones
Show Mode (when in red)
Display brightness
Sequence of levels
Number of levels
Factory settings - english, °C, 24 hours etc
Delta T
Prozess abort key
- 13 - V02 en, SCC_WE
Function Key - Settings - Service - Communication
Function Key
Settings
Settings
HACCP
Communication
Service
Display Configurator
Record modus
Time, Language, °C/°F, Acoustics, Plate weight etc.
Download HACCP Data
Pictures, Ring tones, USB Stick, IP Address
Unit Data, Service package, Hotline numbers, Descaling,
Show Mode
Communication
Date, Time
Start time
Language
°C - °F
Brightness
Number of levels
Plate weight
Bankett
h:m m:s
24h am:pm
Delta T
E/2
Ringing tones
Sequence
of levels
Plate weight
à la carte
USB Stick
Network
Service
Unit Data
Diagnostic
Hotline
Empty Steam
generator
Descaling
(>16%)
Show Mode
V02 en, SCC_WE - 14 -
- 15 - V02 en, SCC_WE
V
Water level control steam generator SCC_WE
Center level electrode S2 => Ground: 2 - 6V AC:
S2
B5
F3
water level too low
steam heating must switch OFF
solenoid valve filling Y1 ON
M4
Y1
Center level electrode S2 => Ground: 0V AC:
water level reached
steam heating can switch ON
PCB
S2
AC
solenoid valve filling Y1 switched OFF
Level electrode can be measured at X12: 1-4
The level electrode is equipped with two side electrodes to ensure safe water level recognition even
when the center level electrode is scaled. These
side electrodes compensate for the build up of scale.
Permanent water level control;
Maximum continuous steam time: 2 Minutes,
Property of connected water:
Conductivity must be above 50µS/cm;
St.Gen. empty: ca. 2 - 6V AC
St.Gen. full: 0V
SV Filling on 230V
SV Filling off 0V
Heating on 230V
Heating off 0V
Filling SG Max. heating 2 Min. Control Steam heating
V02 en, SCC_WE - 16 -
SC (Self Clean) Automatic
During the production of steam, the concentration of minerals inside the steam generator will
increase over time. These minerals settle on the heating elements and heat exchanger as
well as the interior steam generator walls.
In order to reduce this effect the steam generator will be pumped off and ushed regularly depending
on the duration of steam production. This process needs approximately 45 seconds.
After emptying the steam generator it will be lled automatically with fresh water.
There are 4 conditions to start this SC Automatic:
1. Heating time of the steam generator must exceed 60 min.* and
2. the temperature of the thermocouple steam generator must be below 65°C (149°F) and
3. the temperature of the thermocouple interior cabinet must be below 70°C (158°F) and
4. the unit is switched ON.
In case the unit is used permanently the above mentioned temperature conditions
can not be met.
In this case the „forced SC Automatic“ applies as follows:
1. The heating time of the steam generator reaches twice the set duration*, e.g. 120 min. and
2. the unit door is open for longer than 30 seconds
* The marked values can be changed in unit specific ranges using the diagnostic program.
After completion of the SC-Automatic the accumulated steam heating time is re-set to zero.
SC-Automatic does not replace the need for descaling and/or installing water treatment filter
- 17 - V02 en, SCC_WE
SCC_WE Electric (Index H): Basic principle
B1
B3.1 - 3.6
F4
P1
M4
M6
Y1
Y2
Y3
B2
M1
S2
M7
S12
B4
B5
F3
S3
Y4
S11
M12
Care
Y5
B1 Thermocouple interior cabinet
B2 Thermocouple quenching
B3.1-B3.6 Thermocouples core temperature
B4 Thermocouple humidity
B5 Thermocouple steam generator (preheat, 180°C (356°F) max)
F3 Safety thermostat steam generator 160°C (320°F)
F4 Safety thermostat interior cabinet 360°C (680°F)
M1 Fan motor (Floor unit: top)
M4 SC-pump
M6 CleanJet pump
M7 Motor drain valve / ball valve
M12 Care pump
S2 Level electrode
S3 Door reed switch
S11 CDS sensor
S12 Micro switch drain valve
P1 Differential Pressure sensor humidity
Y1 Solenoid valve filling
Y2 Solenoid valve quenching
Y3 Solenoid valve moistening
Y4 Solenoid valve Care
Y5 Solenoid valve Clima
SCC 201/202 only:
M2 Fan motor bottom with jumper ( Floor units only)
V02 en, SCC_WE - 18 -
Manual modes SCC_WE / Boiling point recognition
Steam mode in relation to boiling point recognition
During self test (after initial installation) the unit will determine the installation altitude by water boiling
point recognition.
As the boiling temperature declines with increasing altitude above sea level, the water boiling point
determines the installation altitude.
During self test the steam production will be active until the quenching sensor B2 reaches 70°C
(158°F). At this time the pcb will memorise the temperature measured by the interior cabinet sensor B1
as the boiling point temperature at the actual point of installation.
To run a manual cooking mode the following steps must be taken:
1. Cooking mode is selected.
2. Time or core temperature is selected.
3. Cabinet door is closed (door contact).
4. Fan motor is running (speed signal via bus).
5. In wet modes (Steam, Combination) the steam generator must be filled with water (level electrode)
6. In wet modes (Steam, Combination) the steam generator will be preheated
(thermocouple steam generator)
Mode
Temperature
range
30° (87°) up to
boiling point
at boiling point
above boiling
point up to
130°(266°)
30° (87°) up to
boiling point
above boiling
point up to
300°(572°)
30 - 300°C
(86 - 572°F)
Responsible sensor
Cabinet sensor B1 controls steam heating
- Humidity setting not possible
Cabinet sensor B1 controls steam heating
- Humidity setting not possible
Humidity control (P1, M1 rpm and B4) controls steam heating,
Cabinet sensor B1 controls Hot air heating at 50%, (only
possible when humidity is above 70%)
- Humidity setting not possible
Cabinet sensor B1 controls Hot air heating up to set temp.;
Cabinet sensor B1 controls steam heating
Cabinet sensor B1 controls Hot air heating up to set temp.;
Humidity control (P1, M1 rpm and B4) controls steam heating,
Alternating supply of steam and hot air depending on the reached
temperature and humidity.
- Humidity setting is possible
30 - 300°C
(86 - 572°F)
Cabinet sensor B1 controls Hot air heating
- Humidity setting is possible (humidity from food only)
Quenching controlled by B2 at 80°C (176°F) Wet, 90°C (194°F) in Hot Air
- 19 - V02 en, SCC_WE
Selftest
Selfttest
Your SCC will carry out an automatic
self test and adjust itself perfectly to
the set-up conditions and the altitude.
Next
Selfttest
Your SCC will carry out an automatic
self test and adjust itself perfectly to
the set-up conditions and the altitude.
To determine the optimum number of
cleaner and rinse aid tablets, please specify
whether the unit is connected to normal
water or soft water. Please press the appropriate button
Unit is connected to soft water
(up to 8,75° e)
Unit is connected to normal water
(over 8,75° e)
Selfttest
Your SCC will carry out an automatic
self test and adjust itself perfectly to
the set-up conditions and the altitude.
Softwater:
7°dH, 12,5°F, 8,7°E, 125ppm, 1,25 mmol/l
Self test
Note: Gas units: In case the unit was NOT delivered with the correct gas type configuration, it must be converted prior of starting the self test. Please refer to gas manual!
SCC_WE and CM_P units will run a automatic Self Test routine after installation.
This Self test will start under the condition, that the tempearture of B1,
B2 and B4 are below 40°C (104°F).
Additionally 1 at and closed GN container (max 20mm) shall be inserted into the cabinet with the opening facing down at a height center to
Component test
the fan wheel. (201 - 202: 2 fan wheels = 2x GN containers)
The self test comprises a component test, calibration and determination of the boiling point
After the component test (S2, M4, Y1-Y4, CDS) the calibration will start
Boiling point
calculation
with the offset setting on P1 before the unit will determine the pressure
values for all fan speeds and directions in cold and dry condiition.
During step 200 the boiling point will be determined and stored.
This is followed by P1 calculating the pressure values for all fan speeds and
directions in steam and later combination mode 170°C (338°F).
Should at a later point in time the unit be reinstalled at a altitude more than 300m different to the original installation height, a new self test should be initialized in order to determine the new boiling point.
Such re-initialization can be be done in Basic settings, self test.
Selftest
Calibration
step 200
Calibration:
During a manual calibration only the P1 pressure values for cold (<40°C), steam (at boiling point) and combination (170°C) are calculated.
There will be NO determination of a new boiling point.
V02 en, SCC_WE - 20 -
Selftest
During the self test the individual component groups are indicated ticked off one by one.
IIn case an error number is displayed switch the unit OFF and ON again to access Service level.
If the door contact, thermocouple interior cabinet, bus cable to motor or ignition box is defective, the selftest will
be interupted
Note: During Self Test it is always possible to access the Service diagnostic mode!
Pre condition before Self test and Calibration
temperature of cooking cabinet sensor B1 is below 40°C (102°F)
temperature of quenching sensor B2 is below 40°C (102°F)
temperature of humidity sensor B4 is below 40°C (102°F)
door contact closed
heating: OFF
fan motor: OFF
left side panel closed, interior cabinet clean, if possible dry;
to achieve best calibration values insert a closed 20mm GN container
with opening facing down onto the rail closest to the center of the fan wheel
(201-202: 2 motors - 2x GN container)
Step Function possible error
message
0 ready fo calibration Any indicated error relates to the corresponding malibration
10 checking calibration
conditions
20 Measuring Offset P1 with
fan motor not turning
100 - 115 pressure measurement cold
table unit 61 - 102
100 - 131 pressure measurement cold
floor unit 201 - 202
200 steam heating up to boiling
point without fan motor
202 steam heating with fan
motor
210 - 225 pressure measurement
steam table unit 61 - 102
210 - 241 pressure measurement
steamfloor unit 201 - 202
300 heating of cabinet to
193°C (380°F)
followed by 60 sec. to 170°C
(338°F) steady condition
301 - 316 pressure measurement
combi table unit 61 - 102
301 - 332 pressure measurement
combi floor unit 201 - 202
999 calibration sucessfull
10
200
e.g. 302
reason for error - remedy
step.
e.g. error 10 will be indicated, when the condition for calibrations is not given.
Reason: B1, B2 or B4 is above 40°C (104°F)
16 steps for each fan motor, (32 steps with floor models), e.g.
100: running fan motor at constant speed „1“
101: store P1 value at this given speed
e.g. error 200 is indicated, when the steam heating will not
reach the necessary 70°C (158°F) to detremine the boiling
point in the allocated time.
Reason: e.g. SSR (energy optimising) or gas burner is not
activated etc.
e.g. error 302 is indicated, if sensor P1 does not give any or
any valid value at this time.
Reason: P1 defective or hoses to P1 blocked by water.
These errors are indicated during the respective calibration
step is running.
After solving the problem the Selftest must be started again.
- 21 - V02 en, SCC_WE
Humidity control SCC_WE
In order to measure the humidity inside the interior cabinet the following pysical principle is used:
When the fan wheel is turning, the rear fins create a differential pressure on pressure sensor p1 via the
connecting hoses (inner and outer connection).
The pressure sensor P1 is supplied with 12V DC. When the fan wheel is at a stand still, the offset voltage is between 0,45 - 0,55V DC.
The differential pressure is dependent on:
1. The speed of the fan wheel
2. The temperature in the cabinet
3. The amount of humidity in the cabinet
The following rules apply:
The output voltage of P1 is higher when the fan wheel turns faster.
The output voltage of P1 is higher when the cabinet temperature is lower.
The output voltage of P1 is higher when the humidity in the cabinet is lower.
This differential pressure is converted into a dc voltage for processing by the pcb.
Sample: SCC_WE 101E
NOTE: The given values are only average values and shall only demonstrate the relationship of pressure values P1 to change in speed, temperature and humidity.
500 rpm 1000 rpm 1450 rpm 1550 rpm
Cold and dry 1,1V 2,2V 2,9V 3,1V
Warm and humid - Steam 100°C (212°F) 0,7V 1,7V 2,0V 2,2V
Hot and humid - Combination 180°C ( 0,6V 1,5V 1,7V 1,9V
Differential pressure sensor P1
Thermocouple B4
Humidity
Humidity control
Bus signal
Motor rpm
V02 en, SCC_WE - 22 -
Humidity control SCC_WE
If the measured humidity value is too high, the clima valve Y5 will be activated and the closing disk will
be lifted. The negative pressure behind the fan wheel will cause dry air from the kitchen be sucked into
the cabinet. The humid air will be displaced and pushed through the cabinet drain into the quenching
chamber.
This Clima valve also functions as the safety relief valve.
Cross section of the clima valve:
Y5
Emergency humidity control:
In case the differential pressure sensor P1 is defective (no signal), the steam generator will be activated by time control automatically to a humidity level of 60%.
At the same time error „Service 36“ will be shown.
Should the signal of P1 be out of the standard range (invalid signal), humidity will be controlled by the
quenching sensor.
At the same time error „Service 37“ will be shown.
- 23 - V02 en, SCC_WE
Loading...