4-25. REPLACE SOLUTION FEED PUMP DIAPHRAGM.
This task covers:
a. Tools. Tool Kit (Appx B, Sect Ill, Item 1).
b. Equipment Condtiion. Hypochlorination unit shut down (paragraph 2-6.d).
Tool box removed (paragraph 4-9).
Hypochlorite solution is toxic to skin and eyes. Avoid
repeated or prolonged contact. Wear skin and eye
protection to prevent personal injury.
a. Adjust pump stroke adjusting knob ( 1) to 0.
b. Remove eight screws (2) and Iockwashers (3) and liquid head assembly (4).
c. Unscrew diaphragm (5) from push rod (6).
d. Remove push plate (7), flat washer (8), and spacer (9) from diaphragm (5).