Rational SelfCookingCenter whitefficiency, Training Manual

Page: 21 / 76

- 21 - V02 en, SCC_WE
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
reason for error - remedy
0 ready fo calibration Any indicated error relates to the corresponding malibration
step.
e.g. error 10 will be indicated, when the condition for calibra-
tions 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.
10 checking calibration
conditions
10
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
200
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
e.g. 302
301 - 332 pressure measurement
combi floor unit 201 - 202
999 calibration sucessfull