Marley
/
MH
Fluid Cooler
/
Specifications: Options
Specifications
Specification Value
17
All Stainless Fluid Cooler
6.1
Replace paragraph 6.1 with the fol-
lowing:
Except where otherwise spec-
ified, all components of the fluid cooler
shall be fabricated of heavy-gauge,
series 300 stainless steel. The tower
shall be capable of withstanding water
having a chloride content (NaCl) up to
750 ppm; a sulfate content (SO4) up to
1200 ppm; a calcium content (CaCO3)
up to 800 ppm; silica (SiO2) up to 150
ppm; and design operating ranges up
to 50°F (27.8°C). The circulating water
shall contain no oil, grease, fatty acids,
or organic solvents.
Stainless Steel Coil:
4.1
Replace paragraph 4.1 with the fol-
lowing:
Coil(s) shall consist of fully
welded box headers with serpentine
coils. All coil components shall be
assembled from series 300 stain-
less steel. Coils shall be tested to
400 psi(2757 kPa) air pressure while
immersed in water. Maximum oper-
ating design pressure shall be 225
psi(1551 kPa). The coil shall be designed
for free drainages of fluid at shutdown.
Convenience and Safety Options
Handrail and Ladder:
MHF706 and
MHF707 models only
11.2
Add the following paragraph in the
Access section:
The top of the fluid
cooler shall be equipped with a sturdy
handrail, complete with kneerail and
toeboard, designed according to OSHA
guidelines. Handrails and kneerails
shall consist of 1.66" (42mm) O.D. x
15 gauge galvanized structural tubing,
the handrail of which shall be capable
of withstanding a 200 pound (890N)
concentrated live load in any direc-
tion. Posts are 2" x 2" (51mm x 51mm)
square structural tubing and shall be
spaced on centers of 8'-0"
(2438mm) or less. A 1'-6" (457mm)
wide aluminum ladder with 3"(76mm)
I-beam side rails and 1.25" (32mm)
diameter rungs shall be permanently
attached to the endwall casing of the
fluid cooler, rising from the base of the
fluid cooler to the top of the handrail.
Q
For pure resistance to corrosion—coupled with the capability to
meet stringent fire and building codes—there is no substitute
for stainless steel. No paints or electostatically-applied coatings,
however exotic they may be, can match stainless steel's ability to
withstand adverse operating conditions.
Q
For process fluids that are not compatible with the standard gal-
vanized steel construction, stainless steel offers you the ultimate
in corrosion resistance and long life. The thermal performance
rating shall be based on the Cooling Technology Institute certified
performance rating adjusted for the thermal properties of stain-
less steel.
Q
Good maintenance practice requires periodic access to the top of
the fluid cooler to inspect the distribution basins as well as the
structural integrity of the fan deck, fan guard, fan cylinder and
fan—especially the fan blade securing hardware. These models
are large enough to accommodate this convenience.
For the comfort and safety of your operating personnel, we rec-
ommend that you specify a ladder and handrail on these models
Portable ladders and other “make-do” access means are inap-
propriate for equipment of this size and complexity. Also, fixed
ladders without fan deck handrails invite unsafe maintenance
practices and must not be allowed.
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
