BIEMMEDUE BH 50 Manuel D'instructions page 29

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
Check heater
Check diesel supply line
Clean exterior of heater
Clean motor and fan
Check electrical connections
Check and test burner
Check thermostats
Clean interior of heater
Inspect and clean combustion
chamber
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;
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/outlet are not obstructed.
L-L 196.00-BM
Periodic maintenance
X
X
X
X
X
X
X
X
X
EN
6.3 Cleaning the motor and the fan
Clean the fan blades and the motor as follows:
• Remove the two side fixing screws (A) on the fan group, slide the
fan group (B) backward and rotate it downward.
• Remove the fastening screws on the fan safety grille (C).
• Clean the motor with compressed air.
• Clean the fan blades with a hard brush.
• Reinstall the safety grille and 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 two side fixing screws (A) on the fan group, slide the
fan group (B) backward and rotate it downward.
• 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 fan thermostat and manual reset safety thermostat as
follows:
• Remove the side inspection panel
• Find the two thermostats attached to the front wall of the
combustion chamber
• Clean with a dry cloth, taking care not to damage the thermostats
• Close the side inspection panel
Inspect the burner thermostat as follows:
• Remove any air outlet connection ducts
• Clean with a dry cloth, taking care not to cut or bend the capillary
tube.
6.7 CLEANING THE INTERIOR OF THE HEATER
For thorough cleaning, the heater can be cleaned and washed inside
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
29 / 52