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wetted with lukewarm water and a mild detergent, then dry using a clean cloth.
Keep air inlet and fan free from dust and dirt. To clean inner parts, gently blow compressed
air through air inlet.
Regularly inspect the power cable: if worn, cracked or damaged have it replaced by techni-
cal service.
Before storing the heater, make sure it is perfectly cool and dry. Cover the unit with a plas-
tic bag, put it in its packing box and store it in a dry, ventilated place.
Before starting any maintenance task, shut down, unplug and let the heater
cool down for at least 15 minutes.
Do not attempt any electrical repair yourself. If the heater needs service or
repair, contact a qualified technician.
Do not use a faulty unit unless a qualified technician has inspected and
repaired it.
When cleaning, make sure that water does not enter the unit.
Do not open the enclosure to clean the inner parts. Do not spray water into
the heater.
Never use solvents, gasoline, toluene and similar aggressive chemicals to
clean the heater.
After product maintenance, it is necessary for qualified technician to inspect
and debug the product to its normal state before use
Do not carry out emergency servicing under wet conditions, If unavoidable,
please provision of weatherproof covers for appliances designed for outdoor
installation
The following checks BY QUALIFIED PERSONNEL ONLY are recommended before every sea-
sonal use:
Nozzle
Carefully unscrew nozzle from nozzle fitting. Blow compressed air through nozzle orifice to
free it from dirt. Replace nozzle if necessary.
Air Filters
Clean air filters. Remove filter end cover (11), wash air intake filter (10) using a light deter-
gent and dry it thoroughly before re-installing. Replace air delivery filter (9) once a year
(Fig.3)
Fig.3
4
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Ignition Electrodes
Clean, adjust and if necessary replace ignition electrode. For electrode gaps see Fig. 4-5
(dimensions in mm).
Fig.4
Compressor Pressure Adjustment (Fig. 6)
The compressor pressure is factory set and must be checked and adjusted by
qualified technicians only. Tampering with the unit may be dangerous.
Remove pressure gauge cap. Connect a pressure gauge on the pressure measuring port on
the rear guard. Start heater and read air pressure value. If necessary adjust pressure to the
correct value turning the adjusting screw (the air vent hole in the adjusting screw middle)
clockwise to increase, anticlockwise to decrease the pressure:
OUTPUT FILTER
REMOVE COVER AND REPLACE
FILTER ONCE A YEAR
INTAKE FILTER
WASH AND DRY EVERY 500
HOURS OR AS NECESSARY
Fig.6
Electrical
Inspect cables, electrical parts and connections.
STORAGE INSTRUCTIONS
Store the heater in a dry place above 10ºC in the original packaging. Remove
all fuel from the tank before storing.
Fig.5
Model Air Pressure (bar)
DFA 2320
0.32
DFA 2330
0.31
DFA 2350
0.45
4
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