EN
L-L 321.00-BM
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Warning
If the safety thermostat goes into safety stop (lamp d),
push reset button (f) for 3 seconds to restart the heater.
Warning
NEVER do more than two restarts in a row: unburned fuel
can accumulate in the combustion chamber and suddenly
flare up at the next restart.
5.2. STOP
Stop the heater by turning switch (a) to “0” position or, if the heater is
in automatic mode, by setting the room thermostat to a lower
temperature: the burner shuts off. The fan keeps working, starting
and stopping several times until the combustion chamber has cooled
completely.
Warning
Never stop the heater by simply turning off the
disconnecting switch on the panel.
The electrical supply must be disconnected ONLY when the
fan has come to a complete stop.
5.3. VENTILATION
To run the heater only in continuous ventilation mode, turn switch (a)
to the position with the symbol V.
6. MAINTENANCE
Warning
All of the operations described in this section must be
performed by professionally qualified personnel only.
The following procedures must be done at regular intervals to ensure
efficient operation of the heater. Make sure you have detached the
electrical power line from the heater before starting any work.
Warning
Before doing any maintenance:
• Stop the heater as indicated in the “STOP” paragraph;
• Switch off the power supply by means of the cut-off on
the electrical panel;
• Wait until the heater cools.
Procedure
Periodic maintenance
Ev
ery
d
ay
Ev
ery
w
eek
Ev
ery
s
ix
m
ont
hs
Ev
ery
y
ea
r
Check heater
X
Check gas supply line
X
Clean exterior of heater
X
Clean motor and fan
X
Check gas supply pressure
X
Check electrical connections
X
Check and test burner
X
Check thermostats
X
Clean interior of heater
X
Inspect and clean combustion
chamber
X
6.1. CHECKING THE HEATER AND THE DIESEL SUPPLY LINE
Perform the following checks:
• Make sure the heater is not installed where there may be a risk of
fire or explosion
• Make sure that flammable materials are kept a safe distance away
• If you find diesel leaks:
• Close the diesel stopcock
• Find and repair the source of the diesel leak
• Do not use the heater if any removed panels have not been
remounted
• Make sure the room to be heated is sufficiently ventilated
• Make sure that the air intake and outlet are completely unobstructed
• Make sure that the heater is not covered by any sheets or covers
• Check that the heater is in a fixed and stable position;
• Make sure the heater is constantly monitored during operation and
checked before being started;
and checked before being started
6.2 CLEANING THE EXTERIOR OF THE HEATER
To ensure efficient operation, clean the following parts:
• Burner:
• Remove all external dirt and debris
• Make sure the air inlet is not obstructed.
• Pipes, connectors and joints:
• Clean with a cloth.
• External body:
• Clean with a cloth.
• Air inlet/outlet:
• Remove all dirt and debris
• Make sure the air inlet is not obstructed.
6.3 Cleaning the motor and the fan
Clean the fan blades and the motor as follows:
• Remove the fan group fixing screws and then remove the fan group.
• Clean the motor with compressed air.
• Clean the fan blades with a hard brush.
• Reinstall the fan group.
6.4 CHECKING THE ELECTRICAL CONNECTIONS
After detaching the power cable, check all electrical connections as
follows:
• Make sure that all connections are complete and tight.
• If there are traces of dirt or corrosion, clean or replace the
connections if necessary.
• Replace any damaged wires or connectors if necessary.
6.5 CHECKING AND TESTING THE BURNER
To reach the burner:
• Remove the burner fixing screw.
• Remove the burner and follow the checking and cleaning
instructions in the burner manual.
• Reinstall the burner.
• Run the procedures described in paragraphs 4.7 and 4.8 to
measure combustion parameters and check that combustion is
stable and clean.
6.6 CHECKING THE THERMOSTATS
Inspect the thermostats as follows:
• Remove any air outlet connection ducts
• Find the thermostats fixed to the internal panel of the space heater.
• Clean with a dry cloth, taking care not to cut or bend the capillary
tube.
