EDX Product Brochure - Evapco

MECHANICAL SPECIFICATIONS
EVAPCO EDX Cooling Tower Mechanical Specifications
with Optional Stainless Steel Construction and Maintenance Equipment
Furnish and install factory assembled, induced draft, crossflow cooling towers as shown on plans. Total fan
motor horsepower shall not exceed ________ HP, consisting of ________ @ ______ HP fan motors.
1.0 Cooling Performance Capacity: The towers shall be guaranteed to cool ________ GPM of water from ________°F
to ________°F at ________°F entering wet bulb temperature when installed as shown on plans.
2.0 Hot Water Distribution: The towers shall be provided with stainless steel hot water basins. Each basin shall
be provided with a 125 psi flanged butterfly valve to provide means of positive water shut-off to the tower
and to balance flow between hot water basins and between tower cells. Anti-vortexing type polypropylene
nozzles shall be provided to assure even water distribution over the heat transfer fill media. Heavy duty fiberglass
hot water distribution basin covers shall be provided. Basin covers shall be a sliding design to allow easy
inspection of hot water basins.
3.0 Cold Water Basin: Cold water basins shall be constructed of G-235 galvanized steel and shall be provided with a side
suction outlet connection for each basin. The outlet connections shall be beveled for welding and provided with a
mechanical coupling groove. Each basin shall be provided with anti-vortexing hood, drain connection, overflow
connection, Type 304 stainless steel strainers, and float operated mechanical make-up valve with plastic float. The
basin floor sections under the fill shall be sloped from the louver face towards the depressed center section of the
basin floor to deter build-up of contaminants under the fill and to facilitate basin cleaning.
4.0 Air Inlet Louvers: Air inlet louvers shall be water containment design in order to minimize water splash out.
Louvers shall be PVC construction molded integral with fill sheets in order to establish and maintain a contained
water flow pattern on the fill sheets.
5.0 Heat Transfer Surface: The heat transfer surface shall be PVC film type fill. The fill shall be elevated above
the basin floor to allow basin cleaning under the fill area. The fill shall be bottom supported to prevent fill
sagging and permanently assure easy and effective basin cleaning. Fill shall be stacked bundle design to allow
easy removal for fill cleaning and/or replacement without cutting or removing fill supports.
6.0 Drift Eliminators: Drift eliminators shall be PVC construction. The guaranteed maximum drift rate shall be
0.002% of the design flow rate.
7.0 Structure, Casing, Fan Deck and Fan Cylinders: Tower structure, casing, fan deck and fan cylinders shall be
constructed from G-235 galvanized steel. During fabrication, all galvanized panel edges shall be coated with
a 95% pure zinc-rich compound.
8.0 Access: A large access door with minimum dimensions of 46” high and 32” wide shall be provided in the
tower casing wall to permit entry into the tower cold water basin and fan plenum area. Access doors shall be
hinged design for easy access.
9.0 Fan Motors: Fan motors shall be mounted on an adjustable base which allows the motor to swing to the outside
of the unit for servicing or replacement. Motors shall be ________ HP maximum, TEAO, 1.15 service factor,
variable torque, ball bearing design and suitable for cooling tower duty. Motors shall be ________ (two
speed/one speed), ________ RPM, single winding, ________ phase, ________ hertz, ________ volts.
10.0 Drive: Fans shall be driven by a multi-groove, solid back type v-belt. The belt material shall be neoprene reinforced
with polyester cord and specifically designed for cooling tower service. Fan and motor sheaves shall be
cast aluminum construction. Belt adjustment shall be accomplished from the exterior of the unit. Bearing
lube lines shall be extended to the exterior of the unit for easy maintenance.
11.0 Fans: Each tower cell shall be provided with one heavy duty, statically balanced, propeller type fan. Fans shall
utilize aluminum blades which are installed in a closely fitted fan cylinder with venturi air inlet for maximum
fan efficiency. Each fan blade shall be individually adjustable. Fan cylinders shall be covered with a heavy
gauge hot dip galvanized wire fan guard.
7