Primus I35/50 Programming Manual page 12

ERROR 7: UNDER PRESSURE SWITCHES ARE OFF
1 or 2 (according to width of machine) under pressure sensors detect correct function of combustion gases
exhaust. If the combustion gases exhaust is weak and there is a danger of spreading combustion gases to
the space around ironer, then under pressure switches will open and by this the gas valve gets closed and
the burner will turn off.
CAUSE:
1. Clogged exhaust pipeline, dust in ventilator
vanes, etc.
2. Ventilator is not rotating at all
ERROR 8: FAILURE OF BURNER IGNITION
Ironer is equipped with automatic electronic system for the burner ignition and the flame guarding. If the
flame ignition is not successful, the system will bring out the error message. After confirmation this message
by the button for automatic finishing of ironing, a new trial to ignite the burner will be executed.
CAUSE:
1. Gas supply is closed
2. Defect gas valve (in the ironer stand)
3. Wrong function of mixer
4. Wrong position of ignition electrode
5. Defective ignition electrode
ERROR 9: CRANK FOR MANUAL ROTATION OF IRONING CYLINDER IS PUSHED
To avoid injury when pressing the crank during reverse operation, the crank is equipped with a safety
switch, which will stop the ironer when the crank is pushed. Then this error message is displayed.
CAUSE:
1. The crank is pushed
2. Micro switch on the crank stayed activated
ERROR 10: THE TROUGH IS LIFTED UP (ONLY MACHINES WITH FRONT/REAR
DELIVERY)
Position of the trough is monitored to avoid an access into the machine inner space during operation.
If the trough opens during the machine operation, the error message is displayed and the machine changes
to safety condition (direction of balancing is switched forward, speed is reduced to minimum). After the trough
is closed, the error message is deleted, original speed as well as direction of balancing are reset.
CAUSE:
1. Trough is lifted up
2. Micro switch of trough position is damaged
ERROR 11: FAILURE OF UNDERPRESSURE SWITCHES
The correct function of underpressure switches is checked during the machine operation. Before starting
the machine by the button „START", the switches must be switched OFF. They must be switched ON within
10s after START. See failure 007.
CAUSE:
1. Failure in wiring
2. Defected underpressure switch
508913C PUBLICATION DATE 25 AUG 2006.DOC
(GAS HEATING ONLY)
Check and clean the whole route of combustion
gases exhaust.
Check motor of ventilator and electrical installation,
see also error 003.
(GAS HEATING ONLY 50 HZ)
Open the valve installed on the gas pipeline to
ironer.
Check the valve. Switching of the valve is
accompanied by audible click.
Remove sieve of mixer and check, whether the jet
is not clogged and whether the sleeve above jet is
in correct height (see Maintenance manual).
Check, whether the electrode is covered with flame
when the burner is burning.
Check, whether the electrode glows.
Release the crank and start the machine with
„Start" button or start reverse operation
Check the correct function of the micro switch
Close the trough
Check the correct function of the micro switch
Check the correct wiring of switches
Check the switch correct function
PROGRAMMING MANUAL 11