baltur GI MIST 1000 DSPGM Manual De Instrucciones página 47

STARTING UP AND REGULATION WITH LIGHT
OIL
1) Check that the characteristics of the nozzle (delive-
ry and spray angle) are suitable for the furnace
(see BT 9353/1). If not, replace it.
2) Check that there is fuel in the cistern and that it is, at least
visually, suitable for the burner.
3) Check that there is water in the boiler and that the system's
gate valves are open.
4) Check, with absolute certainty, that the discharge of combustion
products can take place freely (boiler and chimney lock-gates
should be open).
5) Make sure that the voltage of the electric line to which the
burner is to be connected, corresponds to that required by the
manufacturer, and that the motor's electrical connections have
been correctly prepared to match the voltage rating available.
Also check that all the electrical connections carried out on the
spot are in accordance with our electric wiring diagram.
6) Make sure that the combustion head is long enough to enter
the furnace to the extent specified by the boiler manufacturer.
7) Remove the protective cover from the rotating disk in-
serted on the servomotor which regulates delivery
(fuel/air). On this disk have been fitted adjustable screws which
are used to control the fuel and the relative combustion air.
8) Check that the air regulation device on the combustion head
is in the position considered necessary for the fuel delivery
required (the air passage between the disk and the head should
be considerably closed when the fuel delivery is considerably
reduced; on the other hand, when the nozzle has a fairly high
delivery, the air passage between the disk and the head should
be relatively open (see Chapter "Regulation of the Combustion
Head").
9) Put the two modulating switches in the "MIN" (minimum) and
"MAN" (manual) positions.
10) Start up the fuel supply auxiliary circuit, check its efficiency and
regulate the pressure at about 1 bar (if the circuits is supplied
with a pressure regulator).
11) Remove from the pump the vacuumeter connection point plug
and then open slightly the gate valve fitted on the fuel arrival
pipe. Wait until fuel comes out of the hole, without air bubbles,
and then re-close the gate valve.
12) Insert a manometer (end of the scale about 3 bar) into
the vacuumeter connection point on the pump and con-
trol the value of the pressure at which the fuel arrives at
the burner pump. Insert a manometer (end of the scale
about 30 bar) into the manometer connection point pro-
vided on the pump and control its working pressure.
Insert a manometer (end of the scale about 30 bar) into the
special connection point of the first flame return pressure regu-
lator (see 0002900311) in order to control the return pressure.
13) Now open all the gate valves and any other interception devices
fitted on the light oil pipelines.
14) Put the switch on the control panel in the "O" (open) position and
give current to the electric line which the burner is connected
to. Check, by pressing manually the relative relay, that the fan
and pump motors rotate in the right direction. If they do not,
exchange the places of the two cables of the principle line in
order to inverse the sense of rotation.
15) Start operating the burner pump by pressing manually on the
relative relay until the manometer, which measure the working
pressure of the pump, indicate a slight pressure. The presence
of low pressure in the circuit confirms that filling up has taken
place.
16) Insert the switch on the control panel to give current to the
control box. If the thermostat (safety and boiler) are closed, the
control box's programmer will be connected and will insert the
burner's component devices according to its pre-established
programme. The units starts up in this way, as described in
Chapter "Description of Operations").
!
To adjust the gas pilot flame proceed as follows:
- disconnect the wire from terminal n° 18 of the
LFL... control box to prevent the electromagnet being
switched on.
- disconnect the wire from terminal n° 17 of the
LFL... control box (intermittent pilot) and connect it to
terminal n° 18 (pilot always on).
- ignite the burner, adjust the quantity of gas and
air for the pilot flame and check for proper ignition
several times.
- when adjustment is over restore the original connec-
tions.
UV CELL
Detection of the pilot flame is effected by a UV cell:
the following information should be born in mind.
Even slight greasiness will compromise passage of the UV rays
through the UV photocell bulb, thus preventing the sensitive
device inside it receiving the quantity of radiation needed for
correct operation. If the bulb is smeared with light oil, heavy oil,
etc. it must be cleaned thoroughly. Note that even gentle contact
with fingers can leave a slight film of grease which is sufficient to
compromise proper UV photocell operation. The UV cell does not
"see" daylight or the light emitted by a common bulb.
A sensitivity check can be carried out using a flame (lighter,
candle) or the spark generated between the electrodes of a
common ignition transformer. To ensure proper operation the
UV cell current must be sufficiently stable and must not drop
below the minimum required by the specific control box.
It may be necessary to try different positions in order to find the
best one: do this by shifting (axial or rotary shift) the body that
contains the photocell with respect to the attachment strap. The
check is effected by connecting a micro-ammeter (with suitable
scale), in series, to one of the two UV photocell connection
wires; it is, of course, necessary to observe polarity ( + and - ).
The cell current needed to ensure proper control box operation
is given on the wiring diagram.
13 / 32
0006080764_201006
E
N
G
L
I
S
H