Solenoid Valve; Cleaning And Maintenance; Fault Finding - Sime RS Mk. II Serie Manual De Instrucciones

4.3 SECOND GAS

SOLENOID VALVE

The gas assembly is normally produ-
ced with a second gas solenoid valve
which is normally closed.
4.4 COIL
Coil components are identified in fig. 22.
4.5 TRANSFORMATION TO
ANOTHER TYPE OF GAS
A kit is supplied containing everything
required for transformation to butane
gas (G30) or propane gas (G31) .
Transformation from one type of gas
to another requires replacement of
the main nozzles and the conical
spring (1, fig. 22).
Proceed as specified in point 4.2. 1 to
adjust operating pressures.
When finished, apply the plate provi-
ded in the kit for identification of the
gas for which the boiler is set up to
the skirt.
NOTE: All gas connections must be
tested for seal using soapy water or
products intended for the pur pose
after assembly.
DO NOT USE OPEN FLAME.
4.6 CLEANING AND
MAINTENANCE
At the end of the heating season,
perform boiler cleaning and mainte-
nance as follows (fig. 23):
– Turn off the power supply to the
electrical panel.
– Remove the skirt door (2) and base-
board (1).
– Unhook the upper front panel (3)
and hook it to the pins below it.
– Remove the cover (6).
– Remove the screw holding each
burner (7) in place and remove the
burner from the combustion cham-
ber.
– Remove the screws holding the
upper inside panel (4) in place.
– Remove the screws holding the
cleaning panel in place (5).
– Clean the flue gas passageways
with a brush.
– Next clean the burners, blowing air
through them under pressure.
– Check the positioning and wear of
electrodes.
70
KEY
1 Conical spring
2 Spring anchor
3 M13 locknut
4 Max. pressure control
union
KEY
1 Baseboard
2 Door
3 Upper front panel
4 Upper front wall
– Clean the stack union and check the
efficiency of the flue.
– After assembly, test the seal of all
gas connections using soapy water
or a product manufactured for the
purpose. Do not use open flame.
Preventive maintenance and control
of the functioning of the device and
its safety systems must be perfor-
med exclusively by authorised techni-
cal service technicians.
5 Coil
6 Spring
7 Clips
8 Reduced pressure con-
trol screw
5 Flue gas chamber
cleaning plate
6 Cover
7 Burner
4.7 FAULT
FINDING
The power supply to the ring is on
but the boiler does not start.
– Check the gas supply to the boiler.
– Check that the safety and control
thermostats are closed.
– Gas is not reaching the pressure
switch.
– Check that the electronic device is
working, and replace it if necessary.
Fig. 22
Fig. 23