Sime Rondo B Series, Manual

Page: 36 / 56

34
with pegs that snap in place;
– dismantle the control panel (3)
anchored onto the sides with two
self-tapping screws;
– remove the upper (1) and lower (2)
front panels fastened onto the sides
with pegs that snap in place;
– dismantle t he lef t side (4),
unscrewing the two screws holding
it to the upper racket (7), removing
the screw holding it onto the rear
panel (8), and finally removing the
screw holding the side onto the hot
water tank bracket;
– dismantle the right side (6) in the
same way.
3.3.4 Fault finding
Herefater we outline a number of
potential problems that may occur on
the appliance and the relevant list of
actions required.
A working fault, in most cases, provo-
cates the “lock out” signal onto the
control panel of the control box.
When this light turns on, the burn-
er can operate again only after the
reset button has been pressed; if
this has been done and a regular
ignition occurs, it means the failure
can be defined momentary and not
dangerous.
On the contrary, if the “lock out” stays,
the cause of the fault, as well as the
relevant action must be made accord-
ing to the following chart:
The burner does not ignite
– Check the electric connections.
– Check the regular fuel flow, the
cleanness of the filters, of the nozzle
and air vent from the tube.
– Check the regular spark ignition and
the proper function of the burner.
The burner ignites regularly but the
flame goes out immediately
– Check the flame detection, the air
calibration and the function of the
appliance.
Difficulty in regulating the burner
and/or lack of yield
– Check: the regular flow of fuel, the
cleanness of the boiler, the non
obstruction of the smoke duct, the
real input supplied by the burner
and its cleanness (dust).
The boiler gets dirty easily
– Check the burner regulator (smoke
analysis), the fuel quantity, the flue
obstruction and the cleanness of
the air duct of the burner (dust).
The boiler does not heat up
– Control the cleanness of the shell,
the matching, the adjustment, the
burner per formances, t he pr e-
adjusted temperature, the correct
function and position of the regula-
tion stat.
– Make sure that the boiler is suffi-
ciently powerful for the appliance.
Smell of unburnt products
– Control the cleanness of the boiler
shell and the flue, the airtightness of
the boiler and of the flue ducts (door,
combustion chamber, smoke ducts,
flue, washers).
– Control the quality of the fuel.
Frequent intervention of the boiler
shutoff valve
– Control the presence of air in the
system, the function of the circula-
tion pumps.
– Check the load pressure of the appli-
ance, the efficiency of the expansion
tanks and the valve calibration.
3.4 ANTIFREEZE PROTECTION
In freezing weather, make sure that the
heating system continues to function
and that the rooms are kept warm
enough, including the room in which
the boiler is installed; if this cannot be
done, both the boiler and the heating
system must be completely emptied.
Completely emptying the system also
means emptying the hot water tank
and the hot water heating coil.
3.5 USER WARNINGS
When faults occur and/or the equip-
ment does not operate correctly, turn
it off, without attempting to make any
repairs or take direct action. For any
operation only contact the authorised
technical personnel in your area.
1
2
4
3
5
6
7
8
Fig. 8