Unigas S10, Установка, эксплуатация и обслуживание, Страница: 15 / 32

PART III: MAINTENANCE 15
At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to
carry out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out
every 6 months.
PERIODIC OPERATIONS
Remove, check and clean the combustion head (Fig. 18);
Check of ignition electrode, cleaning, adjustment and, if necessary, replacement (Fig. 19);
Check of detection electrode, cleaning, adjustment and, if necessary, replacement (Fig. 19). f in doubt check the detection
circuit as shown in Fig. 20.
N.B. All operations on the burner must be carried out with the power disconnected
NOTE: The check of the ignition and detection electrodes is carried out after removing the combustion head.
Removing the combustion head
Remove the burner from the gas supply line.
To access the combustion head abd the
electrodes, slcken the screw VE (Fig. 18) on the
blast tube and unthread it; provide a stable sur-
face where lie the burner during maintenance
operations.
Fig. 18
Correct electrodes position
To guarantee a proper ignition, the measures indi-
cated in Fig. 19 must be respected.
Ensure the locking screw of the electrodes
group is tight before refit the burner.
Fig. 19
Checking the ionization current
To measure the detection signal intensity, follow
the scheme in Fig. 20.
If the signal is less than the value indicated, check
the position of the detection electrode, the electric
contacts and, if necessary, replace the electrode.
Fig. 20
PART III: MAINTENANCE
VE
Flame controller
Min. detection
signal
Landis LGB21-22 3µA
Landis LMG21-22 3µA
FLAME CONTROLLER
Scale µA DC
1