Nordcap MORETTI T75G Mode D'emploi page 49

- "Gas parameters": display the current configuration gas
parameters. Follow the instructions in 3.4.4 to set different gas
parameters.
- "Align": start graphic interface alignment procedure. Press
up/down arrow keys to move the corresponding graphic interface.
Press RETURN to return to the previous screen.
- "Alarms": displays any errors. Up/down arrow keys scroll the list
of alarms present.
- "Log file": starts the process of saving any data log stored in the
memory on external USB device. Insert the USB device and
press OK to perform data transfer.
- "Format": For Manufacturer only
Press "OK" on the selected item and follow the instructions. Press
RETURN to return to the previous screen without confirming the
changes.
Message FILTER CLEANING (T75G): see point 4.3
3.6.18 ALARMS/SIGNALS DISPLAY
T64G
The following types of ALARM may be displayed on the screen (fig.
31 item D) if problems are detected.
- ALL1 – General Alarm (baking fan, over-temperature in the motor
compartment, max over-temperature inside the baking chamber)(see
3.6.19 points A-B-C)
- ALL2 - Thermocouple alarm (see 3.6.19 point G)
- ALL3 - Switchboard over temperature alarm (see 3.6.19 point N)
- ALL brn BLOC - Burner block (see 3.6.19 point D)
- ALL GAS FAN - Burner fan breakdown alarm (see 3.6.19
point I)
-ALL 7-Burner in permanent block (see 3.6.19 Point D)
T75G-TT98G
The oven has an advanced self Diagnostics system.
The following ALARMS can be displayed if there are any defects:
-Fan Alarm stopped
-Engine compartment alarm (only TT98G)
-Maximum safety temperature exceeded alarm
-Burner locked out/Permanent Block burner
-Electronic card communication Error
-Thermocouple alarm
-Belt stopped alarm
-Burner fan Alarm malfunction (T75G)
-Burner fan Alarm/pressure switch burner malfunction
(TT98G)
-Electronic card alarm malfunction
When any of these alarms turns on, the display indicates the type of
alarm and cools the oven.
A similar screen to Fig. 33 will be displayed characterized by a
representative icon of the error at the center of the display (fig. 33
item A) below which there is a text message (fig. 33. item B).
The warning signal will remain until OK is pressed.
The acoustic and visual warning device remains until OK is pressed.
The alarm warning device remains even if the alarm condition ceases
to exist. Suppose for example that the temperature exceeds the
maximum threshold for a moment and then returns to correct values;
the alarm turns off but continues to be displayed and the oven is
turned off until it is restarted. This enables the operator to notice the
defect even if no one was close to the oven when it happened .
Moreover: when an alarm buzzes, the oven turns off and the signal is
displayed on the screen; press "OK" to return to home screen and
alarm signal disappears. However the defect might not be resolved
because if the oven is turned on again and the defect has not been
resolved, the alarm will be displayed again and the oven will turn off.
WARNING!
In case the oven breaks down or fails, the
oven automatically starts the cooling procedure that lasts for 30
minutes after which the cooking fan is switched off. Press OK to
view the error and try to restart the oven. If there are more errors
each time the OK button is pressed the next error is displayed.
If the oven still fails, press the OK button again and wait for the
oven to turn off automatically; unplug the power cable from the
socket, close the gas tap and contact specialized technical
assistance.
Leave the equipment to cool down and send for technical
assistance to remedy the cause of the failure and to make sure
that no part of the equipment is damaged and replace if
necessary. Here are some useful information for the technical
expert.
In some operations the oven may lock off and/or turn off for the
following causes:
3.6.19 ALARMS ICONOGRAPHY:
T75G-TT98G (figure 33)
Each alarm / warning is displayed on a screen
A Fan alarm
- The fan motor is provided with a thermal protection that stops the
motor in case of excessive absorption; allow the motor to cool down
before rebooting, after eliminating the cause of failure. Two cooking
fans are included by default for the TT98G oven.
B Moto compartment alarm (T64G - TT98G)
- If the motor compartment temperature unusually exceeds the
maximum threshold, a thermal switch automatically turns on and cools
the oven; allow the oven to cool down and check the rear cooling fan
functions properly (Fig.52 item Y) before restarting oven.
C Temperature limit alarm.
- If the internal temperature unusually exceeds the limit, the safety
thermostat automatically turns on and blocks the oven ; unscrew the the
safety thermostat's (fig.29 item P) hood to restore the oven's operation ,
after having cooled and ensured that no component is damaged, and
press the button below to reset the thermostat; repo sition the protective
hood to prevent the thermostat from damage and breaking down the
oven. Only TT98G: The oven has two independent safety thermostats
with manual reset: one for the left side (fig.29 item P) and one on the
right side of the oven (fig.29 item G).
D Burner locked-out alarm / permanent Block burner
- If the burner fails to turn on it will lock out; ensure the gas was
opened and that the gas circuit lets air out before initial start which may
require some ignitions. Another reason could be the ineffective
scintillator because the distance from the burner is wrong (correct
position fig.48).
NOTE:
In T64G and TT98G the burners by default
automatically retry ignition three times if locked out for each
burner available before the alarm is shown on the display!
If the alarm buzzes, wait until the countdown finishes and press OK to
unlock alarm. Press START to restart. If the burner turns on for a few
seconds and then locks out, ensure that the power supply and neutral
phase is correct, or that the detector works properly.
NOTE:
Flame filled scintillator and detector can be deformed
and stop performing their function; they must be replaced
periodically as per procedure in 5.14.
The burner's flame control has an integrated safety that provides for
the permanent blocking of the burner in case 5 blocks occur in the time
interval of 15 minutes. If this happens, proceed with the operation of
shutting down the equipment (see 3.7), wait for the completion of the
shutdown phase then proceed with the restart of the equipment (see
3.6.2).
F Communication error (
-Indicates that communication between the electronic boards is
compromised. Ensure that the cards are powered appropriately and
connections are intact.
G Thermocouple alarm
-This indicates that the thermocouple is damaged or disconnected. In
TT98G: the display also indicates which thermocouple is damaged, left
or right.
H Conveyor belt alarm (
- The geared motor of the conveyor belt is provided with a secondary
speed control system; if it does not turn, the alarm will buzz.
I The Burner fan malfunction alarm (T64G)
-The Burner fan is provided with secondary speed control system; if it
does not turn nor turns at maximum speed above the level required,
the alarm will buzz.
L The Burner fan/pressure switch malfunction alarm (TT98G)
-The Burner fan is provided with secondary speed control system; if it
does not turn nor turns at maximum speed above the level required,
the alarm will buzz. The pressure switch may be damaged due to
unexpected circumstances or flown through by an irregular air flow
that the burner fan is underpowered and the fan fails to reach the
expected speed. Also check the pressure switch and its circuit; ensure
that the two air capture metal pipes for pressure switches are clean.
M Electronic card malfunction alarm (
-This indicates a fault in the electronic card directing the burner flame
control. The alarm detects a condition of danger when there is an
abnormal flame when operated: during the cooling process or if the
measured temperature is higher than the set point.
UK/12
T75G-TT98G)
.
T75G-TT98G)
T75G-TT98G)