Amcot ST Series - Page 17

AMCOT ST SERIES FIBERGLASS COOLING TOWER
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GENERAL MAINTENANCE
WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES
Sprinkler Pipe Assemblies (ST-70 to ST-1500)
Sprinkler pipes on ST-70 to ST-1500 are attached to the center sprinkler head by a slip fit connection
with set screws located on the sprinkler head point of connection. The assembly also uses a tension
wire and turnbuckle assembly which extends from the center of the sprinkler head to the end of each
sprinkler arm to help prevent deflection when filled with water.
Disassembly:
1. Shutdown your cooling tower and remove casing panel to gain access. (ST-70 – ST-125)
a. For ST-150 to ST-1500 it is recommended that you enter the tower by way of the fan
guard located on top of the unit.
b. You should use a thin sheet of plywood and place this on top of the fill media so as to
not stand directly on the fill. The fill is designed to support the weight of a maintenance
worker, but you should avoid standing directly on the fill.
2. Remove tension wire from the end of the sprinkler arm, you do not need to remove it from the
turnbuckle or center post.
3. Loosen set screws on the sprinkler head.
4. Remove the sprinkler arm by pulling it straight out.
Cleaning:
1. Flush the arm using a spray hose and insert a screwdriver into the orifices to free or loosen any
debris.
2. Gently tap the end on the ground to expel any debris.
Installing: (after cleaning or for new sprinkler arms)
1. Insert the sprinkler arm into the sprinkler head with the orifices pointing straight down.
2. Turn the sprinkler arm slightly counter-clockwise so that the orifices are at a slight angle.
3. Tighten set screws on the sprinkler head.
4. Reinstall the tension wire making sure that it is very taut.
5. You can adjust tension wire further by adjusting the turnbuckles as necessary.
6. Spin the spray system by hand to make sure that no spray arms are the water deflectors come
into contact with the fill media.