Engine 2014: Motor Plants and Auxiliary Boilers

1. A in the down position as a result of establishing the water  flow through "Q"
2. B in the down position as a result of the applied spring force during the self-cleaning cycle
3. C in the up position as a result of the applied spring force  after the water flow through "P" is secured
4. D in the up position as the only result of securing the water flow through "Q"

Tip: press A-D to answer