BIEMMEDUE GA/N 70C Mode D'emploi page 30

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.
7.1. CHECKING THE HEATER AND THE GAS 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 smell:
• Open the windows immediately
• Do not touch electrical switches
• Close the gas stopcock
• Find and repair the source of the gas 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;
7.2 CLEANING THE EXTERIOR OF THE HEATER
To ensure efficient operation, clean the following parts:
• 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/outlet are not obstructed.
7.3 CLEANING THE MOTOR AND THE FAN
Clean the fan blades and the motor as follows:
• Remove the fastening screws on the fan safety grille (C).
• Remove the side inspection panel
• Clean the motor with compressed air.
• Clean the fan blades with a hard brush.
• Reinstall the safety grille.
• Close the side inspection panel
7.4 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
7.5 CHECKING THE THERMOSTAT
Inspect the manual reset safety thermostat as follows:
• Clean with a dry cloth, taking care not to cut or bend the capillary
tube.
7.6 CLEANING THE INTERIOR OF THE HEATER
For thorough cleaning, the heater can be cleaned and washed inside
L-L 222.01-BM
EN
and outside with water. Always do as follows:
• disconnect the electrical cable and remove it from the outlet
• completely close all access panels
• do not use water jets at a pressure exceeding 70 bar at a distance
less than 30 cm
• completely dry all parts before reconnecting the electrical cable
7.7 CLEANING THE COMBUSTION CHAMBER
To maintain the burner's high efficiency and prolong its life, the
procedure described in this paragraph must be done at least once at
the end of the work season or more frequently if there is an
excessive build-up of soot. Excessive soot may be caused by poor
chimney draught, poor fuel quality, poor regulation of the burner, or
more or less frequent alternation of burner starts and stops. Pay
attention during operation: pulsations at start may be due to
excessive amounts of soot.
To access the combustion chamber:
• Remove the side inspection panel
• Clean with compressed air or a metal brush
• Reinstall the safety grille.
Warning
After any technical work, always check that the heater
works correctly.
8. TROUBLESHOOTING
In case of serious malfunction, the electronic equipment causes the
heater to go into safety stop, and lamp (8) lights with a steady red
light (stop light).
Warning
In case of a safety stop, you have to push the reset button
(8) 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.
In case of safety stop, press the reset button (8) for at least 12
seconds to launch a self-diagnosis programme, after which the
button will flash at different rates (Self-diagnosis lamp) according to
the type of safety intervention: the synoptic on the electrical panel
shows the possible types.
If the combustion chamber overheats, the safety thermostat (4)
trips to shut off the burner and lamp (16) lights: to reset the burner,
you have to shut off the heater completely, cut electrical power,
remove the side inspection panel and push button (4).
Warning
You must always find the cause of the safety intervention
and remove it before pushing reset button (8) or button (4)
and restarting the heater.
If the heater is still not working properly, please contact your
nearest dealer or authorized Service Centre.
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