Specifications
Specification Value
MH Fluid Cooler —
Specifications: Base
12
blades attached to galvanized steel hubs
with U-bolts. Blades shall be individually
adjustable. Fan(s) shall be driven through
a right angle, industrial duty, oil lubricated,
geared speed reducer that requires no
oil changes for the first five (5) years of
operation. All gearbox bearings shall be
rated at an L
10A
service life of 100,000
hours or greater and the gear sets shall
have AGMA Quality Class of 9 or greater.
The gearbox shall include any modifica-
tions to enable operation down to 10% of
full speed.
7. 2 Fan motor(s) shall be ____ hp maximum,
NEMA Premium Efficiency TEFC, 1.15
service factor, variable torque, inverter
duty and specially insulated for cooling
fluid cooler duty (Class F). Speed and
electrical characteristics shall be ______
RPM, single-winding, 3 phase, 60 hertz,
____ volts. Motors shall operate in the
shaft-vertical position for belt-drive
fluid coolers and in the shaft-horizontal
position for gear drive fluid coolers.
Nameplate power shall not be exceeded
at design operation. TEAO motors shall
not be acceptable.
7. 3 The fan and fan drive assembly for each
cell shall be supported by a rigid, galva-
nized steel structural support that resists
misalignment. The mechanical equipment
assembly shall be warranted against
any failure caused by defects in materi-
als and workmanship for no less than
five (5) years following the date of fluid
cooler shipment. This warranty shall cover
the fan(s), premium efficiency motor(s),
geared speed reducer(s), drive shaft(s)
and couplings, and the mechanical equip-
ment support. Bearing assemblies and
V-belts shall be warranted for 18 months.
8.0 Fill, Louvers and Drift Eliminators:
8.1 Fill shall be film-type, thermoformed of
heavy duty PVC, with louvers and elimina-
tors formed integrally in each fill sheet.
Fill shall be suspended from galvanized
structural tubing supported from the fluid
cooler structure. The air inlet face(s) of
the fluid cooler shall be free of water
splash out.
■ The value of a 5 year mechanical equipment warranty speaks for itself.
■ Louvers integral with the fill keep the flowing water within the confines of the fill.
The separate external louvers used by others permit water to escape the fill and
form ice or produce an unsightly situation adjacent to the tower. If you plan to
use your tower in the wintertime, particularly for free cooling, integral louvers will
put your operating concerns to rest.
(44 paginas)
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