Evoqua Wallace&Tiernan 50-200 Series, Руководство пользователя

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WT.050.200.001.UA.IM.0814
50-200 EVAPORATOR FOR CHLORINE
46
EVOQUA W3T98237
p. Replace the bottom chlorine inlet pipe (47) using a new gasket W2T16384.
Connect the injector, W3T107574 from the W3T109990 drying kit, to the
bottom chlorine inlet per Dwg. 50.200.150.010. Install vacuum gauge
W2T19897 into the top flange of the cylinder (30).
q. Turn on the evaporator controls and raise the temperature in the tank to
180°F. Pull a vacuum via the injector and maintain for 1/2 hour at a mini-
mum of 22 inches of mercury.
r. Shut off the vacuum line and observe the vacuum gauge. If a vacuum of
22 inches of mercury or more can be held for one minute, and all parts
of the system being dried are heated by the 180°F water bath, no further
evacuation is necessary. If not, continue to pull a vacuum until 22 inches
of mercury can be held for 1/2 hour.
s. Disconnect the injector and restore the bottom chlorine inlet piping (47).
Use a new gasket W2T16384 in the ammonia-type union on the inlet pip-
ing (47).
t. Remove the vacuum gauge and reconnect the chlorine pressure gauge in
the top flange using a new O-ring W2T11775.
u. Refer to paragraph 4.14, Operational Inspection of the Pressure Relief
Systems, to test both the gas pressure relief system and the liquid line
pressure relief system.
v. Refer to paragraph 3.1, Preparation For Initial Operation, to put the evapo-
rator back into service.
w. Replace the enclosure and put the evaporator into service.
4.13 Five-Year Inspection of Evaporator Cylinder
This inspection is conducted either every five years, after 12 “in-place” clean-
ings, or when indicated by step d or l, paragraph 4.12.
NOTE: Canadian owners of evaporators must comply with local regulations
governing periodic inspection and testing of the pressure vessel.
a. Complete steps "a" through "l" of the “In-Place” Cleaning of the Evaporator
Cylinder Procedure (paragraph 4.12).
b. Remove the silicone bead surrounding the top of the cylinder (30) and
the hot water tank (29).
c. Install the top flange and lifting brackets back into the evaporator cyl-
inder. Bolt the brackets securely in place, making sure the brackets are
180 degrees apart.