pressure switch (set to open at 350 psi) to terminal
No. 1 of the flame safeguard control.
(3) Flame safeguard transformer T2 is powered
from terminal No. 1 energizing the flame detector
(4) When the pump control switch is closed
the motor starter coil circuit No. 11 is powered from
control circuit No. 1. If overload switch X2 is closed
(magnetic starter reset) the magnetic coil will be
energized pulling in the motor starter contacts and
starting the motor.
Figure 4-1. Control schematic.