G. Flowmeter (Rotameter) Maintenance:
Occasionally the flowmeter will become partially clogged with mineral or rust deposits from the incoming water
supply. When this occurs, the obstruction can be removed and the flowmeter cleaned by following the instructions
Turn the black valve knob counter-clockwise until the threads are disengaged. Then withdraw the stem from the
valve by gently pulling on the knob.
Remove the two large mounting bracket screws which secure the flowmeter to the system.
Unscrew the four recessed screws located on the side of the flowmeter, then gently pull the body from the rear
plate. Keep the body parallel with the back plate to prevent undue strain on the body.
Remove the slip cap with a push on a screwdriver as shown in Fig. No. 7 then remove the plug ball stop as
shown in Fig. No. 8 using a 1/2" allen wrench.
Remove the ball float by inverting the body and allowing the ball to fall into your hand as shown in Fig. 9.
(Cover the discharge port to avoid losing the float through that opening.)