Rational SCC Series Installation guide

Edition 10-2008a 1
Training Manual
SCC Line
SelfCooking Center - Combi Master

2
Edition 10-2008a

3
Edition 10-2008a
Training Manual
SCC Line
Edition 10 - 2008a
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 electric
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!

4
Edition 10-2008a
Structure of serial number 6
CM Control Panel 7
CM Technique 8
Water level control Steam Generator 9
RATIONAL SC Automatic 10
Steam Control CM 11
Additional functions CM 12
CM PCB 14
Fan motor 40.00.274 15
CM - Sequence of events 16
Failure Codes CM 21
Service level CM 23
Software update CM units 31
Fault tree: Changing CM pcb / replace EEPROM 33
List of content
Part 1: CM
Part 2: SCC
SCC Control panel 35
Comparing display of software version 36
Display since software version SCC 02-01-01 37
CleanJet 41
Display Cleanjet +Care Index “G” (10-2008) 44
SCC Electric - Basic principle 45
Parts identification 46
General information to software version SCC 04-01-01 48
Difference SCC Index „E“ versus Index „G“ SCC Care Control 51
SCC pcb (42.00.002) 54
New I/O PCB SCC (42.00.064) 55
Fan motor SCC 40.00.274 56
Clima Plus Control SCC 57
SCC - Sequence of events 59
Service level SCC 65
Diagnostic mode SCC 67
Running Times SCC 73
Basic Settings 79
Function test SCC 87
Error code SCC 93
Flash SCC Software 98
SCC pcb change - EEPROM change 99
Download of unit service data 101
Download of HACCP data 105
Calibration SCC 107
Control Drain Valve 54.00.357 111

5
Edition 10-2008a
Gas burner principle 112
Gas Valve 113
Identification of gas burners / Gas blowers: 114
Sequence of events of Burner and Ignition control 115
CO2Values 116
CM Gas principle 117
Check Gas Type / Gas Conversion 118
Changing installation altitude: CM gas 119
Checking of dynamic input gas flow pressure 120
Flue gas analysis 121
Burner adjustment SCC - CM 07-2008 124
Changing Gas blower speed 125
SCC Gas principle 127
Gas conversion / fitting new gas valve 128
Adjustment of installation altitude above sea level 129
Checking of dynamic input gas flow pressure 130
Flue gas analysis 131
Burner adjustment SCC - CM 07-2008 134
Changing gas blower speed SCC Gas 135
Ultravent 136
Water info 140
Intruction for manual descaling 141
Installation and Commissioning checklist 146
COMMISSIONING CHECKLIST SCC / CM 146
Preventative maintenance 150
List of fault tree for SCC - CM 154
Circuit diagram Training 178
Part 3: GAS
Part 4: Common information
Part 5: Fault trees
Part 6: Circuit diagram Training
Part 7: Service reference
SCC Service Reference 196
CM Service Reference 198

6
Edition 10-2008a
Structure of serial number
Energy Unit size Model Version Year Month Serial
number
E - Electric
G - Gas
61 - 6x1/1GN
62 - 6x2/1GN
11 - 10x1/1GN
12 - 10x2/1GN
21 - 20x1/1GN
22 - 20x2/2GN
S - SCC
M - CM
E - initial unit
F only CM, new
pcb
G -SCC + CM
SCC Care Control
04 - 2004
10-2008
07 - Juli 7-digit
number
Energy Unit size Model Version Year Month Serial
number
E - Eletric
G - Gas
61 - 6x1/1GN
62 - 6x2/1GN
11 - 10x1/1GN
12 - 10x2/1GN
21 - 20x1/1GN
22 - 20x2/2GN
C - CPC
M - CM
D - CD
A - initial unit
B - new humidity
C - CleanJet, CDS
D - Motor control
03 - 2003 07 - Juli 4-digit
number until
12.1998
7-digit
number from
01.1999
C-Line Unit size Model Year Month Serial number
61 - 6x1/1GN
11 - 10x1/1GN
12 - 10x2/1GN
21 - 20x1/1GN
22 - 20x2/2GN
C - CCC
M - CCM
D - CCD
95 - 1995 05 - Mai 4-digit number
CD Unit size Model Year Month Serial number
00694071234
10194071234
20194071234
02094071234
14G94071234
21G94071234
06 - 6x1/1GN
11 - 10x1/1GN
21 - 20x1/1GN
22 - 20x2/2GN
C - CC
M - CM
CM 101Gas
CM 201Gas
94 - 1994 07 - Juli 4-digit number
SCC Line: E 61 S E 04 07 2345678
from 04.2004
CPC Line: E 61 C B 03 07 2345678
from 06.1997
until 04.2004
C Line: C 61 C 95 05 1234
from 10.1993
until 05.1997
Classic Line: 06 M 94 07 1234
from 1986
until 05.1997

7
CM
Edition 10-2008
Steam (100°C / 212°F)
Hot Air (30°C - 300°C / 86 - 572°F)
Combi Steam (30°C - 300°C / 86 - 572°F)
Low Temp. Steam (30°C - 99°C / 86 - 210°F)
Finishing (30°C - 300°C / 86 - 572°F)
Cool Down
Cabinet temperature display
Cabinet temperature setting
Timer Set-Temp. -control
Gas: Reset key
Core temperature Set-Temp. -control
Timer - Core temperature display
Timer - Core temperature dial
CM Control Panel

8
CM
Edition 10-2008
CM Technique
B1 Thermocouple cabinet
B2 Thermocouple quenching / Steam control
B3 Thermocouple core temperature
B5 Thermocouple steam generator (preheating, 180°C (356°F) max)
F3 Safety temperature limiter steam generator 160°C / 320°F
F4 Safety temperature limiter cabinet 360°C / 680°F
Y1 Solenoid valve lling
Y2 Solenoid valve quenching
M1 Fan motor (without jumper)
M4 Pump SC-Automatic
S2 Level electrode
S3 Door contact switch
CM 201/202 only:
M2 Fan motor top (with jumper)
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3

9
CM
Edition 10-2008
Water level control Steam Generator
V
AC
S2
M4
Y1
Y2
B2
S2
B5
F3
Center S2 ==> Ground: 2 - 6V AC: water level too low
steam heating must switch OFF
solenoid valve lling Y1 ON
Center S2 ==> Ground: 0V AC: water level reached
steam heating can switch ON
solenoid valve lling Y1 switched OFF
Every 2 minutes steam elements will switch off for
water level control
PCB
X12
1 2 3 4

10
CM
Edition 10-2008
RATIONAL SC 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.* (SCC Care Control: 120min)
and
2. the temperature of the thermocouple inside steam generator (B5) must be below 65°C (149°F)
and
3. the temperature of the thermocouple inside interior cabinet (B1) must be below 70°C (158°F)
and
4. the unit is switched ON.
* - can be adjusted from 20-120min
In case the unit is used permanently the above mentioned temperature conditions
can not be met.
In this case the following 2 conditions apply:
1. The heating time of the steam generator reaches the twice the set duration*,
i.e. 120 min. and
2. the unit door is open for longer than 30 seconds
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 lter

11
CM
Edition 10-2008
Y1 Y2
B2
B1
Steam Control CM
Intelligent steam control via quenching sensor
Temp.
t (s)
B1 - 100°C(212°F)
70°C
(158°F)
1. Filling of interior cabinet based on time and
temperature control of B2 quenching sensor;
(cabinet if fully lled with steam and all sur-
faces have reached steam temperature).
2. After steam saturation inside cabinet steam
will also ll quenching chamber
3. After reaching quenching temperature (B2)
quenching solenoid Y2 will be activated.
Depending on the frequency of temperature
raise of the quenching sensor B2 the duration
of the next steam supply is calculated.
B2 temperature with partial load
B2 temperature with full load
4. The amount of steam inside the cabinet is
directly depending on the temperature varia-
tion of quenching sensor B2.
Y1 Y2
B2
B1
Y1 Y2
B2
B1

12
CM
Edition 10-2008
Additional functions CM
Below are listed the additionaly functions for the user / operator:
1. Cleaning program
1) Cool down cabinet below 60°C / 140°F
2) Spray inside cabinet with Rational cleaner
3) Close cabinet door
4) Select „Cool Down
5) Press core temperature key for 10 sec.
6) „CLEn“ will show in cabinet temperature display
7) Press timer key 1x; Cleaning program starts automatically (open cabinet door
and rinse interior cabinet after 40 min.) Close door again. Since Software ver-
sion C1-06-05 a 10 min step hot air will follow to dry the interior cabinet.
8) After end of program, leave cabinet door open over night.
2. Empty steam generator
1) Open cabinet door
2) Select „Cool Down“
3) Press core temperature key for 10 sec.
4) „CLEn“ will be shown in cabinet temperature display
5) Select „SC“ with temperature dial
6) Close water tap
7) Press timer key 1x and remain on „Cool Down“ position for about 45 sec.
3. Descaling program
1) Open cabinet door
2) Select „Cool Down“
3) Press core temperature key for 10 sec.
4) „CLEn“ will be shown in cabinet temperature display
5) Select „CALC“ with temperature dial
6) Press timer key 1x and follow procedure of the decalcication instruction. (See
user manual CM).
This should be done after each installation to verify free drain connection and prior to disconnection
the unit for storage.

13
CM
Edition 10-2008
Additional functions CM
4. Changing temperature display from °C to °F
1) Select any mode
2) Press timer and core temperature key simultaneously for 10 sec. until Display
changes from °C to °F or vice versa
3) Release both keys
Aborting of descaling program CM:
- Switch unit off and on again
- press core temperature key 1x
- remaining time of 20 minutes will be displayed. During this time the steam generator will be
ushed and the unit will be operated in steam mode for a couple of minutes to eliminate all re-
maining chemical residues.

14
CM
Edition 10-2008
X7
X19
X20
F1 F2
Transformer
0,1 AT 2 AT
1
1
X7
X19
X20
X18
X23
X31
RS 485
X8
X12
X26
X27
X32X24
X30
RS 232
X63
X3X4X6
X2
X50
2 AT
1234
on
off
11
1
1
1
1
1
F6.1
F6.1
2 AT
2 AT
X16
X16
F6
F6
42.00.004
42.00.047
X2 B3 Core temperature
X3 B1 Interior cabinet
X4 B2 Quenching / Steam control
X6 B5 Steam generator
X7 ON - OFF switch
X8 Buzzer
X12 Level electrode
X 16 power supply from transformer (42.00.047)
X18 SC - pump
X19 Solenoid valves
X20 Energy management system / Sicotronic
X23 Vent hood (signal door open / closed)
X24 SSR
X26 SSR pulsing (USA version only)
X27 Door contact switch
X30 Serial interface (RS232)
X31 BUS interface
X32 Timer / Core Temp. Potentiometer
X50 external EEPROM
X63 Not used
Since February 2006 PCB 42.00.004 is replaced by 42.00.047.
(Conversion kit: 87.00.139, pls. see Technical info 04-2006)
The transformer on the new PCB 42.00.047 is no more existing and replaced by
external transformer 40.00.227
CM PCB
1
Temperatur
Poti
42.00.004 from 04-2004 ---- 42.00.047 from 02-2006
Counting sequence

15
CM
Edition 10-2008
Fan motor 40.00.274
Jumper 40.01.581 is used on oor model 201 and 202 for top position motor only!
Jumper is not used on models 61 - 102 with one motor only!
If jumper is not set correctly E12 will be displayed!
LED code fan motor SCC and CM from 04/2004
Reason Remedy
1x Motor doesn’t start, no changing
signal from hallsensor
Check for motor blockage or change motor.
2x Voltage too low on motor pcb Check supply voltage or
change motor.
3x Voltage too high on motor pcb Check supply voltage or
change motor.
4x rpm measurement defective Change motor.
5x Motor pcb temperature >105°C Check cooling system (cooling fan, air
intake lter), otherwise change motor
6x Supply voltage <80V Check power supply
(F1-F2)
7x Motor pcb defective Change motor.
8x Motor pcb defective Change motor.
Units 3AC400-480V (without neutral) are equipped with motor 40.00.276 (3-phase supply)
This motor is equipped with a 4 pole plug for the supply voltage.
LED
Jumper

16
CM
Edition 10-2008
Function Step Responsible sensor
1. Select Steam mode
2. Select time or core temperature
3. Close cabinet door Reed switch S3
4. Check water level inside steam generator Level electrode S2 inside Steam Generatorr
5. Time based preheating of steam generator, Thermocouple B5 inside Steam Generator
if B5 is below 85°C (185°F);
6. Timer starts after successful preheating Logic on PCB
(blinking dot in Display)
7. Steam supply up to steam saturation Quenching sensor B2
inside cabinet (Steam control)
8. Hot Air supply (only 50%) when set Cabinet sensor B1
temperature (100°C/212°F) can not be
reached in time by Steam alone
9. Quenching (set to 70°C/158°F) Quenching sensor B2
CM - Sequence of events
Mode: Steam 100°C (212°F), Temp. preset, not adjustable
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3

17
CM
Edition 10-2008
CM - Sequence of events
Mode: Low temperature steam; Temp. range 30-99°C (86-210°F)
Function Step Responsible sensor
1. Select Low temperature steam mode
Set temperature 30-99°C (86-210°F)
2. Select time or core temperature
3. Close cabinet door Reed switch S3
4. Check water level inside steam generator Level electrode S2 inside Steam Generatorr
5. Time based preheating of steam generator, Thermocouple B5 inside Steam Generator
if B5 is below 85°C (185°F);
6. Timer starts after successful preheating Logic on PCB
(blinking dot in Display)
7. Steam supply until set temperature Cabinet sensor B1
inside cabinet is reached
8. Hot Air supply (only 50%) when set Cabinet sensor B1
temperature can not be reached in time
by Steam alone
9. Quenching (set to 70°C/158°F) Quenching sensor B2
Note: Reduction of fan motor speed
In case the actual temperature is 2°C / 4°F higher than the set temperature for longer than 2
minutes, the fan speed will be reduced automatically.
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3

18
CM
Edition 10-2008
Function Step Responsible sensor
1. Select Combi mode
Set temperature 30-300°C (86-572°F)
2. Select time or core temperature
3. Close cabinet door Reed switch S3
4. Check water level inside steam generator Level electrode S2 inside Steam Generatorr
5. Time based preheating of steam generator, Thermocouple B5 inside Steam Generator
if B5 is below 85°C (185°F);
6. Timer starts after successful preheating Logic on PCB
(blinking dot in Display)
7. Hot Air supply until set temperature Cabinet sensor B1
inside cabinet. Hot air has priority
8. Steam supply up to steam saturation Quenching sensor B2
inside cabinet (Steam Control)
9. Quenching (set to 70°C/158°F) Quenching sensor B2
Note: Reduction of fan motor speed
In case the actual temperature in the range of 30-99°C (86 - 210°F) is 2°C / 4°F higher
than the set temperature for longer than 2 minutes, the fan speed will be reduced automati-
cally.
CM - Sequence of events
Mode: Combination; Temp. range 30-300°C (86-572°F)
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3

19
CM
Edition 10-2008
F
CM - Sequence of events
Mode: Finishing; Temp. range 30-300°C (86-572°F)
Function Step Responsible sensor
1. Select Finishing mode
Recommended temperature
30-300°C (86-572°F)
2. Select time or core temperature
3. Close cabinet door Reed switch S3
4. Check water level inside steam generator Level electrode S2 inside Steam Generator
5. Time based preheating of steam generator, Thermocouple B5 inside Steam Generator
if B5 is below 85°C (185°F);
6. Timer starts after successful preheating Logic on PCB
(blinking dot in Display)
7a. Electric units: alternating
12 sec. Hot Air Cabinet sensor B1
6 sec. Steam Quenching sensor B2
7b Gas units: alternating
30 sec. Hot Air Cabinet sensor B1
15 sec. Steam Quenching sensor B2
8. Quenching (set to 70°C/158°F) Quenching sensor B2
Note: Reduction of fan motor speed
In case the actual temperature in the range of 30-99°C (86 - 210°F) is 2°C / 4°F higher
than the set temperature for longer than 2 minutes, the fan speed will be reduced automati-
cally.
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3

20
CM
Edition 10-2008
CM - Sequence of events
Mode: Hot Air; Temp. range 30-300°C (86-572°F)
Function Step Responsible sensor
1. Select Hot Air mode
Set temperature 30-300°C (86-572°F)
2. Select time or core temperature
3. Close cabinet door Reed switch S3
4. Timer starts immediately Logic on PCB
5. Hot Air supply unitl set temperature Cabinet sensor B1
is reached
6. Quenching (set to 90°C/194°F) Quenching sensor B2
Note: Reduction of fan motor speed
In case the actual temperature in the range of 30-99°C (86-210°F) is 2°C / 4°F higher than
the set temperature for longer than 2 minutes, the fan speed will be reduced automatically.
B1
B3
F4
M4
Y1 Y2
B2
M1
S2
B5
F3
S3