Marley
/
MH
Fluid Cooler
/
Specifications: Base
Specifications
Specification Value
14
8.0
Fill, Louvers and Drift Eliminators:
8.1
Fill shall be film-type, thermoformed of
15 mil (0.38 mm) thick PVC, with lou-
vers and eliminators formed as part of
each fill sheet. Fill shall be suspended
from galvanized structural tubing sup-
ported from the tower structure.
8.2
Coil louvers and eliminators shall be
film-type, thermoformed of 17 mil
(0.43mm) thick PVC and shall be easily
removable for access to tube bundle
8.3
Fill and coil drift eliminators shall be
triple-pass, and shall limit drift losses
to no more than 0.005% of the design
GPM flow rate of the recirculating
water. The air inlet face of the tower
shall be free of water splash-out.
9.0
Distribution Basins:
9.1
An open basin above the fill with
removable interchangeable polypro-
pylene nozzles installed in the floor of
the basin shall provide full coverage of
the fill by gravity flow. Basin shall be
installed and sealed at the factory and
shall be equipped with removable, gal-
vanized steel covers.
9.2
A redistribution basin below the fill
with polypropylene nozzles installed in
the floor of the basin shall provide full
coverage of the coil at a flow rate suf-
ficient to ensure complete wetting of
the coil at all times.
10.0
Casing, Fan Deck and Fan Guard:
10.1
The casing and fan deck shall be heavy
gauge G-235 galvanized steel panels.
The top of the fan cylinder(s) shall be
equipped with a conical, non-sagging,
removable fan guard, fabricated of
welded 5/16" (8mm) and 7 gauge rods
and hot-dip galvanized after fabrication.
Q
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.
Q
Drift rate varies with design water
loading and air rate, as well as
drift eliminator depth and num-
ber of directional changes. The
indicated rate of 0.005% is eas-
ily achievable without premium cost. If a lower rate is required,
please discuss with your Marley office or representative.
Q
Gravity-flow distribution basins are a feature of the MH Fluid
Cooler resulting in operating pump heads less than that encoun-
tered in fluid coolers with pressurized spray systems. Also, these
basins are out where they can be easily inspected—even main-
tained—while the fluid cooler is in operation. Spray systems are
extremely awkward to access and maintain.
Also, the plastic basin covers offered by some manufacturers are
incapable of supporting the loads imposed in maintenance. They
will, therefore, tell you that it is really unnecessary for you to
ever go to the top of their towers and—if you do have to—that it
is better for you to work from the top of a portable ladder!
Q
Manufacturers who use materials other than heavy-gauge steel
for fan decks may be unable to meet your specified loading
requirements. Fan decks on the larger models—MHF706 and
MHF707—are designed to be used as a working platform.
MULTICHILL Refrigeration Products
SPX Cooling Technologies - Marley Cooling Towers
Cooke Industries - Phone: +64-9-579 2185 Fax: +64-9-579 2181 Email: [email protected] Web: www.cookeindustries.co.nz
