Ygnis BLU 7000.1 PR Manuel D'instructions page 13

The ionization current is checked by inserting a
microammeter with an end of scale of 50 µA (d.c.)
in series with the ionization probe.
A faulty position of the electrode can lead to a
reduction in the ionization current and cause a
safety cut-out of the burner due to a flame detec-
tion failure. In this case, check the position of the
electrode, its electric connection and the earthing
of the burner. The ionization current is normally >
20 µA.
REM O VI N G TH E BLAST TU BE
D ESCRI PTI O N O F TH E CO N TRO L PAN EL O F TH E BU RN ER
I
0
RESET
GAS
AUTO
0
I O N I ZATI O N CU RREN T
0
Loking of devoices for operating at intermediate outputs
4
Operation at max. output
6
Operation at min. output
5
Automatic operation
AUTO
5 - Main switch I / O
6 - Lockout disable push button
7 - Lock-out lamp
1 - fusible
2
2 - lampe de thermal de securité
7
3
3 - lampe de fonctionnement
1
4 - commutateur :
0
420010391600 BLU 7000. 1 - 12000. 1 PR / M D
Microamperometro
Microammeter
fondo scala 50 μA
50 µA end of scale
pag.13
min. 6 μA
LANDIS LFL1.622
FI RI N G H EAD
D I SASSEM BLY
B
24