SPX Cooling Technologies Marley Aquatower - Manual (Page 7)

7
/ Construction And Components /
■ Mechanical Equipment
Belt-driven propeller fans insure design airflow at minimum
horsepower. Fans are supported by an oil-lubricated tapered
roller bearing assembly with remote oil reservoir.
For ease of maintenance all drive components are
accessible from outside the tower.
Fan and fan guard. Guard is easily removed for access to
fan and drive belts
Fan drive motor showing adjustable base and belt guard
■ Hoisting and Handling
Hoisting instructions on each tower explains how to use
a spreader-bar and slings beneath the cold water basin floor
to hoist the Aquatower. The tower’s design also allows easy
handling with a forklift.
■ Safety
Standard Aquatower safety features include fan guards and
belt guards. Fan guards consist of welded heavy gauge steel
wire hoops and spokes, hot dip galvanized after fabrication.
The galvanized steel belt guard encloses both belts and
pulleys. Guards are easily removed for servicing.
■ Construction and Finish
Aquatowers offer the corrosion protection of G-235
galvanized—providing a zinc thickness of 2.35 oz/ft
2
per ASTM
A-653—providing long term protection for the steel. Assembly
hardware is also galvanized.
Caution
The cooling tower must be located at such distance and
direction to avoid the possibility of contaminated tower
discharge air being drawn into building fresh air intake
ducts. The purchaser should obtain the services of a
Licensed Professional Engineer or Registered Architect
to certify that the location of the tower is in compliance
with applicable air pollution, fire, and clean air codes.
Fan drive motors are TEFC (may be TENV on model 490A)
designed specifically for cooling tower use. Horsepowers and
electrical characteristics appear in the table on page 4. Other
types of motors are available. Typical options appear under
Optional Accessories on page 10.