Evoqua V10K, Руководство пользователя

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V10K V-NOTCH CHLORINATOR
WT.025.100.001.UA.IM.0614
39
EVOQUA W3T109612
3.6 Changing Gas Supply Containers
Refer to the separate instruction book provided with vacuum regulator for
detailed instructions and precautions.
3.7 2” Injector Manual Operation (See Dwg. 25.100.181.011)
• Application Against Pressure
When the three-way valve is in the ON position, water flows from the
injector inlet through strainer (A) and three-way valve (B) to chamber (C).
Pressure in chamber (C) overcomes the force of spring (D), opening plug
(E) the distance determined by the setting on adjuster screw (F) and per-
mitting water to flow through the injector. The flow of water through the
injector creates a vacuum, which pulls diaphragm (G), which opens seat
(H), and permits gas to be drawn from the gas feeder.
When the three-way valve is turned to the OFF position, pressure in
chamber (C) is relieved and a spurt of water passes through the OFF port
in the three-way valve to waste. Spring (D) closes plug (E) and, with no
water flowing through the injector to create a vacuum, spring (J) closes
seat (H) to prevent water on the injector discharge from backing up into
the gas feeder.
• Application Against Negative Head
If the injector described above were used where a negative head existed
at the injector discharge, when the injector was shut down, this suction
might act on diaphragm (G) with sufficient force that spring (J) could not
close seat (H) with the result that gas would be drawn from the gas feeder.
To prevent this, an injector suction shut-off unit is added to the injector.
When the three-way valve is in the OFF position, this unit, by the force of
spring (K) through diaphragm (L) and the attached linkage, exerts a pull on
diaphragm (G) and holds seat (H) closed. When the three-way valve is in
the ON position, pressure from chamber (C) is transmitted to diaphragm
(L) and the injector operates as described above.
3.8 2” Injector Intermittent Start-Stop Operation (See Dwg. 25.100.181.021)
When the injector is connected to operate in conjunction with a pump, a so-
lenoid valve is added so that, when the three-way valve is in the START-STOP
position, electrical operation of the solenoid performs the same function as
manual operation of the three-way valve as previously described. When the
solenoid is energized, water passes from the injector water supply through
strainer (M) through solenoid (N) and the three-way valve to chamber (C). When
the solenoid is de-energized, the water supply is cut off and the exhaust port
is opened permitting pressure chamber (C) to be relieved to waste.