Moretti Forni T Serie Manual Instrucciones página 22

3) Contactor/pressure switch failure (during the start phase, it
checks the integrity of the power and pressure switch contacts)
4) Electric panel overtemperature: indicates that the electrical part
compartment temperature has exceeded a threshold of 55°C
(check the operation of the rear cooling fan, etc.)
When there is a signal, the control unit shows the type of signal on
the screen. Pressing "OK" notifies that the signal has been seen and
heard and the message disappears.
Allow the oven to cool down, then call the technical service
department to remove the cause of the problem and check that
none of the components in the oven have been damaged.
In certain working conditions the oven may block and/or switch off,
due to one of the following causes:
- The conveyor belt gear motor is fitted with an electrical guard
system that stops the gear motor in the event of excessive power
absorption.
- The fan motor is fitted with a thermal cut-out that stops the motor in
the event of excessive power absorption. To re-start, after removing
the cause of the problem, the motor must first be allowed to cool
down.
- If the internal temperature exceeds the maximum threshold due
to a malfunction, the safety thermostat triggers automatically to
block operation of the oven; to restore normal operation unscrew
the cap protecting the safety thermostat (fig.14 item P) and press
the button underneath to rearm the thermostat; replace the
protective cap to prevent the thermostat from deteriorating and
compromising proper running of the appliance. TT98E only: the
oven has two independent safety thermostats with manual reset: one
for the left side (fig.14 part.P) and one on the right side of the oven
(fig.36 part.G).
WARNING! If the appliance is still malfunctioning when it is
turned on again, stop it following the procedure in point 3.3.;
disconnect the power plug from the socket and contact a
specialised service technician.
3.2.17 ICONS
ALARMS figure 30:
A Maximum temperature exceeded alarm.
B Fan alarm. (T75E-T97E only).
C Belt alarm.
D: Motor compartment alarm (TT98E only: this is triggered in case
of intervention of one of the thermal cut-out devices on the motors or
due to the intervention of a thermal sensor for overtemperature in the
motor compartment)
E: Thermocouple failure (TT98E only).
VIEW figure 30
F 4 temperature setting (TT98E only).
TIMER figure 31
G: Timer enable or set menu.
H: Timer enabled.
OVEN STATUS figure 31
I: Oven off.
L: Oven on, heating phase.
M: Oven on, cooking.
N: Economy function enabled.
3.2.18 CEILING-FLOOR
RESTRICTIONS
For better control and safety, this control unit has been fitted with the
option of restricting the ceiling and floor set point temperatures to
within a certain range of each other.
When the difference between the two temperatures reaches 20° C
(T75E-T97E) or 15°C (TT98E), a parameter that cannot be modified
by the user, a message is displayed on the right, under the baking
time indicator, to indicate that the maximum allowed difference
between the two values has been reached (example T75E-T97E in
Fig.32).
Fig.32 – Warning: max. ceiling-floor difference reached
Fig.33 – Warning: oven outside maximum temperature difference
At this point the user has two options:
1) press "OK" so as to free the temperatures from the restriction;
2) continue to use the arrow keys as normal.
SET POINT TEMPERATURE
If "OK" is pressed the oven enters free mode, the message disappears
and the oven can be used in a traditional manner.
If "OK" is not pressed and the up arrow and down arrow keys are
used, the message will only disappear if the values are within the
maximum difference allowed, whereas if this difference is exceeded
an increase (decrease) in one value will result in a simultaneous
increase (decrease) in the other.
When "OK" is pressed to free the set point temperature from
restrictions, a message of the type shown in figure 33 is displayed as
a warning.
After pressing the oven start button it will no longer be possible to
insert or remove the temperature restrictions, as this operation is only
possible when the oven is turned off.
Both the warning messages relating to the difference in temperatures
disappear when the oven "Start" button is pressed. When the oven is
turned on no control message will be displayed, and the two set point
temperatures will either be restricted or free, according to the settings
entered when the oven was turned off. When the oven "Stop" button
is pressed it will once again be possible to select whether the
temperatures are to be free or restricted.
The control messages have also be entered in the program call-ups;
The warning messages disappear, when the oven is turned off, if the
baking time is modified; however they will reappear as soon as the
two set point temperatures are modified.
If you press "OK" to free the two temperatures, but they fall within
the preset range of 20°, the message will disappear but it will be
displayed again if the range is exceeded later.
When working in manual and freed using "OK", adjust to outside
range, turn the oven on, cook the food, turn the oven off. If the
temperatures are outside the range they will remain outside the range
and the warning message shown in fig. 32 will be displayed;
The same thing goes when working in manual, outside range, with
the control unit turned off: proceed as above;
Store a program with freed temperatures but with a difference of
20°C (T75E-T97E) or 15°C (TT98E). When the program is called
up and started the two temperatures will remain restricted;
3.2.19 PROGRAM IMPORT/EXPORT FROM/TO USB (TT98E
only)
To the side of the LCD control panel, the appliance has a USB
interface which can be used to connect an external storage device
(pen drive) to import or export programs.
To access these functions, insert the device the press and hold down
the P key. This will open a window to guide the user in the choice of
the following operations
- IMPORT (key 1): the programs in the control unit will be
overwritten by the ones in the USB device. The files need to
reside in the main directory (root) of the USB device.
- EXPORT (key 2): the programs in the control unit will be copied
to the USB device. The copied files will reside in the main
directory (root) of the device.
In both cases, the files are named: PR_xx.T98 with xx from 01 to 20.
NOTE: Only storage devices with FAT16 or FAT32 formatting
will be supported.
3.3 STOPPING
T75E T97E: To stop the appliance, press the STOP button (fig.29
part.17); the fan and movement of the belt will continue for about
12 minutes to bring down the temperature gradually and
safeguard the duration of the components; only after this time
should the power be disconnected turning the switch to position
"0" (fig.14 part.N).
TT98E: To stop the appliance, press the STOP button (fig.29
part.17); the fan will continue for about 30 minutes to bring down
the temperature gradually and safeguard the duration of the
components; after this time, the oven will switch off by itself.
WARNING! In an emergency, disconnect the power supply by
pressing the emergency mushroom head button (fig.14 item O).
NOTE! After the emergency mushroom head button has been
pressed (fig.14 part.O) it will remain pressed in the safety
position until, once the emergency is over, it is unlocked by
turning it anticlockwise.
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