Amcot ST Series - Page 16

AMCOT ST SERIES FIBERGLASS COOLING TOWER
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GENERAL MAINTENANCE
WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES
Sprinkler Pipe Assemblies (ST-40 to ST-60)
Sprinkler pipes on ST-40 to ST-60 are attached to the center sprinkler head by a threaded end
connection and a lock nut which is designed to prevent the arms from becoming loose. In addition,
these arms use a tension wire assembly to help prevent deflection when filled with water.
Disassembly:
1. Shutdown your cooling tower and remove casing panel to gain access.
2. Loosen lock nut on the sprinkler arm.
3. Unthread the arm from the sprinkler head.
Cleaning:
Flush the arm using a spray hose and insert a screwdriver into the orifices to free or loosen any debris.
Gently tap the threaded end on the ground to expel any debris.
Installing: (after cleaning or for new sprinkler arms)
1. Screw the sprinkler arm back onto the sprinkler head taking care not to cross thread them.
2. The orifices should be pointing straight down.
3. Retighten the locking nut.
4. Adjust the arm a final time by turning it counter-clockwise so that the orifices are at a slight
angle.
5. Reinstall the tension wire make sure that it is very taut.
6. Spin the spray system by hand to make sure that no spray arms or the water deflectors come
into contact with the fill media.
7. Reinstall casing panel and bring unit online.