baltur COMIST 72 DSPGM Manuel D'installation, Utilisation Et Entretien page 33

LDU 11.. GAS VALVE TIGHTNESS CONTROL EQUIPMENT
Control programme
t 5s
Putting control circuit under atmospheric pressure
4
t 7,5s Time between start-up and energizing of main "AR" relay
6
t 22,5s 1st verification stage at atmospheric pressure
1
t 5s Putting control circuit gas under pressure
3
t 27,5s 2nd verification stage at gas pressure
2
t 67,5s Total time of tightness control, up to burner operation consent
5
t 22,5s
Return of programmer to rest position = fresh verification is enabled
20
Course of programme
AL remote alarm signalling
AR main relay with "ar" contacts
AS equipment fuse
BR blocking relay with "ar" contacts
DW outer pressure switch (tightness control)
EK... unblocking button
GP outer pressure switch (for mains gas pres-
HR auxiliary relay with "ar" contacts
L1 equipment trouble signalling lamp
SK line switch
I...XI programmer cam contacts
29 / 30
0006080115_200909
sure)
Terminals activated by
equipment or by electric
connections
E
N
G
L
I
S
H