Dynapac Hatz F80W, Workshop Manual

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133 F80W
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WORKSHOP MANUAL
13�2 Ignition process
When the screed heating switch is switched on:
• The control unit opens solenoid valves to supply gas to the
burners.
• The control unit activates ignition units and unless perma-
nent fire is achieved within 7 seconds, the electronic system
indicates a fault.
• If everything is OK, gas is automatically ignited by spark
plugs. Whether or not the flame is burning is evaluated by
the ignition unit through the spark plugs. After reaching
the temperature of 120°C on the screed temperature sen-
sor, the heating is automatically interrupted. After reducing
the screed temperature, heating is automatically activated
by the control unit.
• If the flame cannot be ignited for any reason, a red Led indi-
cator is turned on on the ignition unit for the relevant sec-
tion, and an error message is displayed on the display.
Error message on the display:
F75 – Left screed extension
F76 – Main screed
F77 – Right screed extension
LED indicators on the ignition unit:
• red LED indicator (1) – indicates a fault of the ignition system
for the given section
• green LED indicator (2) – the ignition system is active
• orange LED indicator (3) – is illuminated = it is burning, is not
illuminated = is not burning.