AEC TK Series Cooling Tower Water Treatment Systems - Manual (Page 9)

9
After unpacking and checking for all components, locate the system as close to the
cooling tower reservoir as possible.
1. Mount the pump strainer basket and gasket to the pump.
2. Plumb the pump suction line, be sure to use an isolation valve between the
pump tank and the TK SERIES system. Plumb the isolation valve within 2 feet
of the strainer basket if possible. Plumb a union immediately before the pump
strainer basket to allow for future service. Make sure to place the suction line
in a location where it will not pick up air returning from the tower.
3. Mount the column(s) to the column stand(s); Use the ¾ x 4 bolts for
mounting the bottom flange to the stand. Be sure to place the TK SERIES
sticker towards the front of the system.
4. Load the TK SERIES media into the column(s) (1 Can of media per column).
5. Clean off any excess media from the top flange. Place the 8” gasket on the top
flange of the column. Place the Blind flange on the gasket. Use the ¾ x 5 bolts
to mount the blind flange to the top of the column(s).
6. Thread a 2” male thread adaptor into the 2” female NPT hole in the top of the
blind flange. Within 6” of the top flange plumb a 2” union to allow for future
service.
7. Plumb a 2” line back to the pump tank. If you are installing a multiple column
unit you may want to plumb the column return lines in a header. If you do, the
header should be 3” line. See drawing (page 29). Do not plumb the return line
below the water line of the pump tank; if you do you will not be able to drain
the column(s) during media change out.
8. Locate the closest drain capable of handling the flow of the back wash for the
filter.
a. TK20 35 GPM/ 3 minutes.
b. TK40 65 GPM/ 3 minutes.
c. TK60 100GPM/ 3 minutes.
d. TK80 100 GPM/3 minutes.
If the drain will not handle the flow you may have to add a surge tank to allow
the filter to backwash at the proper flow rate. The surge tank should be large
enough to handle the total volume of back wash. Once the back wash has
taken place, the tank can be allowed to gravity feed to the drain over a longer
period of time.
9. Plumb a 2” drain line, be sure to use a siphon break so if the power fails
during a backwash the pump tank does not drain. See Air gap drawing on
page 10