Wallace & Tiernan SERIES V-2000, Руководство пользователя

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WT.025.055.004.UA.IM.0814
MANUAL CHLORINATOR - 3000LB/24HR
EVOQUA W3T109620
PROTECT YOUR EQUIPMENT INVESTMENT
MINIMIZE DOWNTIME
REORDER A PREVENTIVE MAINTENANCE KIT NOW
KEEP ONE ON HAND
NOTE: If the gas feeder is used seasonally or with a long-term shutdown, the
preventive maintenance should be performed prior to startup.
4.11.1 Performance Check
To assure that all elements of your system are functioning in a normal man-
ner it is recommended that the following checks be made at approximately
three-month intervals. These checks are easy to perform and require no tools.
a. With the gas turned on at the supply container valve and at the vacuum
regulator, and with the injector operating, vary the feed of the gas feeder
through its full range. The gas feeder should feed steadily and hold any rate
set--from the maximum of the rotameter down to 1/20th of maximum.
The rotameter float should not stick or behave erratically at any point.
b. With the injector still operating, turn off the gas at the supply container
valve. In a few moments the vacuum gauge should indicate 100 inches of
water and the indicator on the front of the vacuum regulator should move
to the EMPTY position. After initially rising, the rotameter float will sink
lower and lower in the tube until finally it is resting on the bottom stop.
Decrease the feed rate if necessary to prevent the float from bouncing vio-
lently and damaging the glass tube. An incorrect vacuum reading indicates
either inadequate injector vacuum or an air leak into the system. Failure
of the float to settle down indicates an air leak somewhere upstream of
the rotameter.
c. When the vacuum level is 100 inches of water and the rotameter float
has settled down, turn off the injector operating water. A rapid decrease
in vacuum indicates an air leak somewhere in the system.
d. If the system is equipped with automatic switchover units, operate the gas
feeder with only one unit turned on. Turn on the second unit and then
close the supply container valve on the container originally feeding. The
vacuum level will momentarily increase and then decrease and the gray
knob on the front of the second unit should be observed to snap down
as it assumes the feeding function. Repeat the procedure reversing which
container is turned on first to check that the opposite one will also pull in
automatically. If either unit does not switch on automatically, refer to the
vacuum regulator instruction book.