Evoqua Wallace & Tiernan V-2000 Series, Руководство пользователя, Страница: 49 / 110

Wt.025.055.002.Ua.iM.0814
ManUal Chlorinator - 500lB/24hr
34
eVoQUa W3t110693
b. Unscrew the clamping nut (33) with the parts connected.
c. Remove the poppet (21). Replace the O-ring (20).
d. Remove the snap ring clip (31).
e. Remove the clamping nut (33) and spring (32).
f. Remove the clamping washer (29) and replace O-ring (35).
g. Replace the diaphragm assembly (1). Assemble with clamping disc, clamp-
ing screw, and spring (32). Secure with snap ring (31).
h. Remove the plug (19) and replace the O-ring (20).
i. Press out the poppet seat (18). Replace the poppet seat along with the O-
ring (20). Press in the new seat using a round rod or plastic tube (16 mm)
with a flat front.
j. Place the poppet into the guide (25) and screw in the clamping nut (33)
with the assembled parts.
k. Screw in the plug.
l. Replace the O-ring in the gas inlet.
m. Secure the tailway with the retaining nut and connect to the operation
water tubing.
n. Connect the gas line.
o. Check for tightness and function.
4.13 Periodic Preventive Maintenance
Because of aging of elastomeric components and the desirability of checking
internal zones for possible accumulations of deposits not seen in routine main-
tenance, it is recommended that at one-year intervals each of the principal
components of the system be completely disassembled. Before starting the
work, ensure that the appropriate preventive maintenance kits are on hand.
NOTE: If the gas feeder is used seasonally (long-term shut-down) the main-
tenance should be performed prior to startup.
Refer to Section 6 of this book for appropriate kit numbers.
Disassembly and reassembly instructions necessary to install the maintenance
kit parts are included in the kit(s).