Figure 2-47. Element Cleaning Switch
Chemical Feed Pump Valves. Ensure all valves are in PRIME position (fig. 2-10).
Backwash Timer. Press RESET button on subpanel to ensure pilot controller valve is in SERVICE position
(para. 2-26b (2)).
Take an umarked pail and an adjustable wrench to the source of water. Check suction hoses in raw water to
make sure strainer is under water. With the pail, draw some raw water from the source. Take it to raw water pump No. 1.
Figure 2-48. Raw Water Pump (Prime and Drain)
Check drain valves (petcocks) on the pump. If open, close them. Remove priming plug with your wrench.
Fill pump with raw water. Screw priming plug back into pump. Return adjustable wrench to tool case.