45
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 pressure)
HR
auxiliary relay with “ar” contacts
L1
equipment trouble signalling lamp
SK
line switch
I...XI
programmer cam contacts
Control programme
t
4
5s
Putting control circuit under atmospheric pressure
t
6
7,5s
Time between start-up and energizing of main “AR” relay
t
1
22,5s
1st verification stage at atmospheric pressure
t
3
5s
Putting control circuit gas under pressure
t
2
27,5s
2nd verification stage at gas pressure
t
5
67,5s
Total time of tightness control, up to burner operation consent
t
20
22,5s
Return of programmer to rest position = fresh verification is enabled
LDU 11.. GAS VALVE TIGHTNESS CONTROL EQUIPMENT
Course of
programme
Terminals activated by
equipment or by electric
connections
Summary of Contents for COMIST 122 DSPGM
Page 9: ...9 COMIST 36 72 122 N 8187 1 Rev COMIST 180 250 300 N 8111 2 Rev...
Page 22: ...22 N 0002900580 BALTUR PUMP...
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