Switch Off; Malfunctions - FINO FORNO S Manual Del Usuario

7.8 Temperatur stepping
Casting moulds with different final temperatures can
be heated in the furnace successively (final tempe-
rature A and higher final temperature B).
NOTE!
If a program should only consist of one step (e.g. for
„Shock" heating) make absolutely sure that all values
in further steps are set to "0"!
1. Compile heating program where final
temperature A is reached in the last step
(» section Programming).
2. Remove casting moulds with final temperature A
from the heating chamber after the heating
program has terminated.
3. Keep Prg key pressed.
Now the programming mode is activated.
4. Increase the temperature of the last step to
temperature B with the Plus key.
5. Keep Prg key pressed to quit the programming
mode.The heating program repeats the last step
with the new temperature B.
6. After heating program is finished remove
casting moulds with final temperature B from
the heating chamber.

7.9 Switch off

• To switch off the furnace press the main switch.
The mains control light in the main switch is off.
CAUTION! Risk of burns due to residual
!
heat of the pre-heating furnace!
Even if the furnace is switched off the heating cham-
ber may still have a considerable residual heat.
There is the risk of burns at the walls of the heating
chamber and at the furnace door. Therefore:
• Before working on the furnace make sure that it
has cooled sufficiently. The furnace needs at
least 4 hours to cool from maximum temperature
to room temperature.

8. Malfunctions

In the following section possible causes for
malfunctions and processes for their repair are
described. In case that malfunctions cannot be
eliminated referring to the following information
please contact the manufacturer (» Service adress,
last page).
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8.1 Safety
Personell
• Some of the here described processes for
troubleshooting may, if not marked differently,
be performed by the operator.
• Work on the electrical system may exclusively
be performed by certified electricians.
• Some repairs may only be done by the service
department of FINO. In the description of
individual malfunctions these are separately
indicated.
Personal protective equipment
NOTE!
In the warning notes of this section protective
equipment that has to be worn for specific work is
specifically indicated.
Electrical system
DANGER! Risk of fatal injury from
electrical current!
On contact with live parts there is the risk fatal injury.
Therefore:
• Before any work switch off the mains supply and
pull the mains plug.
CAUTION! Risk of burns due to residual
!
heat of the pre-heating furnace!
Even if the furnace is switched off the heating cham-
ber may still have a considerable residual heat.
There is the risk of burns at the walls of the heating
chamber and at the furnace door. Therefore:
• Before working on the furnace make sure that it
has cooled sufficiently. The furnace needs at
least 12 hours to cool from maximum temperature
to room temperature.
8.2 Malfunction indications
The following devices indicate malfunctions:
Operating display
The operating display shows error messages in case
the electronics are malfunctioning. These are descri-
bed in the following table of malfunctions.
8.3 Table of malfunctions
Malfunction Possible cause
Wrong time Time is wrongly stored
by the controller
No display, Defunct fuse
power light on
No display, No mains power available
power light off
Furnace does not start Powercut/interruption
of power supply
Malfunction Possible cause
Display "Er01" Defect thermo element
Display "Er02" Loose thermo element
connections
Display "Er04" Wrong connection/reverse
polarity of thermo element
Display "Er05" Thermo element shortcut
or heating is defect
Display "Er03" Defunct amplifier
electronics
Display "Er06" Electronics defect
Display "--:--" Door safety switch is
jammed or defect
Display Defunct heating
"Furnace is heating",
but furnace does not
Defunct controller
Heating programs and Defunct controller
programs are not
permanently saved
ENU
Performed
Troubleshooting
by
Set time correctly Operator
(» section Initial operation).
Switch furnace off, wait for
30 seconds, switch on again.
In case of repeated mal function
let controller be exchanged.
Check on site circuit breakers
and power connection.
If necessary call certified
electrician.
Check if mains connection
is interrupted.
Performed
Troubleshooting
by
Exchange thermo element. Certified
electrician,
Retighten thermo element
Service
connections.
Change thermo element
connections.
Check heating/thermo element
and exchange if necessary.
Service
Controller must be exchanged.
Check electronics and exchange
if necessary.
Visual check of door switch.
Call Service.
Conduction of heating must
be checked.
Controller must be exchanged.
Controller must be exchanged.
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