baltur TBG 45ME Mode D'emploi page 17

pressure switches, it is evident that the pressure switch
controls the minimum pressure must make use of the con-
tact, which is closed, when it measures a pressure which
exceeds that at which it has been set. The maximum
pressure switch must make use of the contact, which is
closed, when it measures a pressure below that at which
it has been set. The minimum and maximum gas pressure
switches should be regulated during the burner's gene-
ral inspection and should be in function with the pressure
found each time. Theintervention (by this we mean the
opening of the circuit) of any one of the gas pressure
switches, will prevent the control box and thus the burner
from starting up. When the burner is operating (flame lit),
the intervention of the gas pressure switches (opening of
the circuit) determines the immediate arrest of the burner.
During the burner's general inspection, check the correct
functioning of the pressure switches. By operating the
respective regulating device, it is possible to control the
pressure switch's intervention (opening of circuit) which
causes the burner's arrest.
14) Check the efficiency of the flame detector (ionisation
electrode) by detaching the wire coming from the electro-
de and by turning on the burner. The control box should
carry out completely its cycle and two seconds after the
ignition flame (pilot) is formed, it should go to "shut down".
This control should also be carried out when the burner is
already operating. By detaching the wire that comes from
the ionisation electrode, the control box should go imme-
diately to "shut down".
15) Check the efficiency of the boiler thermostats and pres-
sure switches (this should result in the burner coming to
a standstill).
N.B. Check that that ignition takes place correctly because
if the mixer is forward it may happen that the speed of the
delivery air is so high that ignition becomes difficult. If this
happens the mixer must be moved back by degrees until
it is in a position at which ignition takes place normally, at
which point this can be taken as the final position.
We remind you that it is advisable, as regards the ignition
flame, to restrict the quantity of air to the minimum neces-
sary for safe ignition, even in the most difficult cases.
MANUAL MODE BURNER INSTRUCTIONS
Combustion control can be carried out over the whole modulation
range while manually controlling the MPA 22 equipment. For this
use modulation connector (B) in the diagram, which is provided
with the burner as standard. After disconnecting the 4-pole plug
(A) which takes the signals from the thermostat or the RWF 40
adjustor, insert the connector in position (B). Use the + button to
increase the gas and air supply or - to reduce it.
After the check, put the 4-pole plug (A) back in so as to reset au-
tomatic mode modulation.
IONISATION CURRENT MEASUREMENT
The current minimum for the working equipment is 1.4 µA.
The burner gives a clearly greater current which will not nor-
mally require any controls. If, however, you wish to measure
the ionisation current, you have to connect a milliammeter
in series with the ionisation electrode cable as shown in the
diagram.
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