Marley
/
MH
Fluid Cooler
/
Specifications: Options
Specifications
Specification Value
19
Plenum Walkway:
MHF706 and
MHF707 models—standard on others.
11.5
Add the following paragraph in the
Access section:
Provide a factory-
installed, heavy gauge galvanized steel
walkway with safety grip perforations,
extending from one endwall access
door to the other endwall access door.
This walkway shall be supported by a
galvanized steel framework, and the
top to the walkway shall be at or above
the cold water basin overflow level.
Interior Mechanical Equipment
Access Platform:
MHF706 and
MHF707 models require plenum
walkway option.
11.6
Add the following paragraph in the
Access section:
An internal ladder
shall extend upward from the plenum
walkway to an elevated fiberglass bar
grating platform convenient to the care
and maintenance of the fluid cooler's
mechanical equipment. The platform
shall be surrounded by a sturdy hand-
rail and kneerail system.
Control Options
Control System:
6.4
Add the following paragraph in the
Mechanical Equipment section:
The
fluid cooler shall be equipped with a
UL 508 control system in a NEMA 3R
or 4X outdoor enclosure capable of
controlling single-speed or two-speed
motors as required, and designed
specifically for fluid cooler applications.
The panel shall include a main fused
disconnect with an external operating
handle, lockable in the off position for
safety. Across-the-line magnetic start-
ers as required shall be controlled with
a solid state temperature controller.
Door mounted selector switches shall
be provided to enable automatic or
manual control and wired for 120VAC
control. Control circuit to be wired out
to terminal blocks for field connection
to remote vibration switches. The tem-
perature controller shall be adjustable
for the required process temperature.
Q
A galvanized steel walkway enables easy access to inspect col-
lection basin items such as the coil, coil eliminators, sump screen
and make-up valve and provides a dry working area to view and
access the drive system.
Q
An elevated fiberglass bar grating service platform with alumi-
num ladder provides a permanent working surface to inspect and
maintain the mechanical equipment components.
Q
If it is your opinion that the control system for the fluid cooler be
part of the fluid cooler manufacturer’s responsibility, we are in
wholehearted agreement with you. Who better to determine the
most efficient mode and
manner of a fluid cooler’s
operation—and to apply a
system most compatible
with it—than the designer
and manufacturer of the
fluid cooler?
Marley variable speed
drives are also available
for the ultimate in temper-
ature control, energy man-
agement, and mechanical
equipment longevity.
¬
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
