Evoqua Wallace & Tiernan V-2000 Series, Руководство пользователя

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Wt.025.055.002.Ua.iM.0814
ManUal Chlorinator - 500lB/24hr
30
eVoQUa W3t110693
b. Take steps to prevent water flowing back toward the injector from the
point of application.
c. Unscrew gas line tubing nut and remove tubing.
d. Unscrew injector body union nut (10).
e. Unscrew valve stem (8) in the center of the top of the upper body
(32). Wipe the surface of the spherical tip of valve stem with a clean
cloth or paper towel to remove any loose material. Soak briefly in
10% muriatic (hydrochloric) acid if there are any deposits that do not
wipe away with plain water. If the spherical surface is indented, worn,
eroded, or scratched, replace valve stem.
WARNING: TO AVOID POSSIBLE SEVERE PERSONAL INJURY OR EQUIP-
MENT DAMAGE WHEN USING HYDROCHLORIC ACID, OBSERVE ALL SAFETY
PRECAUTIONS RECOMMENDED BY THE ACID MANUFACTURER/SUPPLIER.
f. Using a blunt tool, remove the O-ring (31) from the valve seat (9)
(diaphragm clamping screw). Discard the O-ring.
g. Reassemble the valve stem to the upper body and replace the valve
seat O-ring and diaphragm clamping O-ring (outer) prior to assembling
the injector body union nut (10).
• Cleaning Poppet Check
a. Unscrew the inlet adapter and discard O-ring (2).
b. Remove the poppet (4) and remove and discard the O-ring (3) from
the poppet.
c. Replace the poppet O-ring (3).
d. Replace the inlet O-ring (2). Wipe a thin film of Halocarbon grease on
the O-ring before installing it.
e. Reassemble the poppet and inlet adapter.
4.12.7 Cleaning 3/4" Fixed Throat Injector (Anti-Syphon) (See Dwg. 25.200.002.020)
The check valve prevents water from the injector from being drawn back by the
vacuum prevailing at shutdown into the control unit and toward the vacuum
regulator during the OFF period.
In continuous or nearly continuous operation, this valve is actuated very little,
and the recommended annual check is principally to assure cleanliness. In auto-
matic start-stop operation, the check valve can accumulate thousands of open-
!