AMCOT ST SERIES FIBERGLASS COOLING TOWER
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GENERAL MAINTENANCE
Access Ladder
For Models ST-40 and greater, your cooling tower is furnished with a shipman’s type of access ladder for
accessing the mechanical section of the tower. The ladder is designed to provide support up to a
maximum weight of 250 pounds. For alternate or optional ladders or access platforms, please refer to
submittal drawings as these are specific to your project and are not a standard offering on the ST tower.
Fan Guards
The Amcot ST-H-3 thru ST-30 towers are supplied with a one piece combination fan guard and motor
bracket. This assembly is attached to the FRP casing panel and can be removed from the tower by
simply removing the fasteners.
On models ST-40 and greater, the towers are supplied with segmented or multi-piece fan guard
assembly which can be removed to provide access to the inside of the cooling tower. The fan guards are
designed in accordance to OSHA standards and you should never operate the tower or remove the fan
guard without first shutting down the tower and performing a lockout/tagout procedure on the
disconnect box for personal safety.
WARNING: The cooling tower must always be operated with fan guards secured and in place to
prevent personal injury, property damage, or both.
Mechanical System – Fan Assembly
ST-H-3 to ST-30
For models ST-H-3 through ST-30 the fan is a preassembled, fixed pitched nylon assembly which is
specifically designed for your model cooling tower. The fan is installed directly to the motor and held in
place by a fastening nut and lock washer located on the motor shaft.
ST-40 to ST-50
For models ST-40 through ST-50 the fan is a preassembled, fixed pitched nylon hub with aluminum blade
assembly which is specifically designed for your model cooling tower. The fan is installed directly to the
motor and held in place by a fastening nut and lock washer located on the motor shaft.
ST-60 to ST-1500
For models ST-60 through ST-1500 the fan is an adjustable pitch aluminum assembly which is specifically
designed for your model cooling tower. For models ST-70 to ST-200 the fan assembly is installed directly
to the motor and held in place by a fastening nut and lock washer located on the motor shaft. For
models ST-225 and greater the fan assembly is secured to a V-belt reducer assembly output shaft.
FANS SHOULD BE INSTALLED SO YOU SEE THE ROTATION ARROWS ON THE BLADES WHEN
LOOKING DOWN THROUGH FAN GUARD.
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