Evoqua Wallace & Tiernan V-2000 Series, Manual

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Wt.025.055.002.Ua.iM.0814
ManUal Chlorinator - 500lB/24hr
23
eVoQUa W3t110693
4.8 Dirty Water Strainer
A strainer is required in the water line ahead of the injector to avoid plugging
of the injector throat ports by foreign material. If sufficient material is allowed
to build up on the strainer surface, the resultant pressure drop across the
strainer reduces the injector operating water pressure. If the pressure drop is
excessive, the injector will not be able to induct the required gas flow. Regular
periodic inspection and cleaning of the strainer will minimize this possibility.
4.9 Differential Regulating Valve (See Dwg. 25.152.001.011)
• Removal and Disassembly
a. Unscrew tubing union nut.
b. Unscrew plug (1). Remove and discard gasket (2).
WARNING: SPRING IS IN A COMPRESSED CONDITION. DISASSEMBLE
CAREFULLY TO PREVENT FORCEFUL EJECTION OF PARTS AND POSSIBLE
SEVERE PERSONAL INJURY.
c. Unscrew and remove valve body (3). Remove and discard gasket (2).
d. Push stem holder (4) out of diaphragm. Remove and discard O-ring
(10).
e. Unscrew and remove seat unit (8). Remove and discard gasket (7).
• Reassembly
a. The residue that accumulates on the valve seat can be removed with
warm water and a detergent. Pipe cleaners or soft brushes may fa-
cilitate cleaning, but wire brushes, scrapers, and the like should be
avoided as they will damage the parts.
b. Wipe a thin film of Halocarbon grease onto all O-rings before reas-
sembling.
c. Apply a thin film of fluorocarbon oil (No. 6.3, Halocarbon Products) to
gasket (2) before assembling.
d. Reassemble in the reverse order of disassembly.
!