Dungs MPA22 - Operating Mode Flowchart: Three Stage Oil Firing; Initial Startup and Internal Tests

Printed in Germany / M-MT-BOS
• Edition 11.99 • # 231 763
72 … 112
Internal tests such as ROM test, CPU
test, RAM test, etc.
Check servo drive for air and go to
reference point.
Safety circuit and temperature
controller are both activated. Process
continues if both are closed; other-
wise, go to standby =“OFF“.
After line-voltage interruption or if a
request for heat was pending in
standby mode.
Move servo drive for air to character-
istic point P9. Idle-state check of air-
pressure monitor.
Restart
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
1
Display in operating mode
Oil firing, three stage