Specifications

Specifications
Specification Value
MH Fluid Cooler — Specifications: Options
16
Stainless Steel Distribution Basin:
9.1 Replace paragraph 9.1 with the follow-
ing: An open 301L stainless steel basin
above the fill with removable interchange-
able polypropylene nozzles installed in the
floor of the basin shall provide full cover-
age of the fill by gravity flow. The basin
components shall be installed and sealed
at the factory and connected with bolted
connections. Tap screws shall not be
allowed. The basin shall be equipped with
removable, stainless steel covers capable
of withstanding the loads described in
paragraph 5.1. The water distribution sys-
tem shall be accessible and maintainable
during tower fan and water operation.
9.2 Replace paragraph 9.2 with the follow-
ing: A redistribution basin below the fill
with polypropylene nozzles installed in the
floor of the basin shall provide full cover-
age of the coil at a flow rate sufficient to
ensure complete wetting of the coil dur-
ing operation. The basin components shall
be installed and sealed at the factory and
connected with bolted connections. Tap
screws shall not be allowed.
Stainless Steel Coil:
4.1 Replace paragraph 4.1 with the follow-
ing: Coil(s) shall consist of fully welded
box headers with serpentine tube circuits.
All coil components shall be assembled
from series 300 stainless steel. Minimum
design operating pressure shall be 150
psi. The coil(s) shall be designed for free
drainage of fluid at shutdown. Coil(s) shall
be warranted against any failure caused
by defects in materials and workmanship
for a period of eighteen (18) months from
the date of shipment.
Convenience and Safety Options
Guardrail 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 guardrail,
complete with kneerail and toeboard,
designed according to OSHA guidelines
and factory welded into sub-assemblies
for ease of field installation. Posts, toprails
and kneerails shall be 1.5" square tub-
■ It would also be advisable to change the fill support tubes in Paragraph 8.1
from galvanized structural tubing to 300 stainless steel structural tubing.
■ For process fluids that are not compatible with the standard hot dip galvanized
carbon steel construction, stainless steel offers you the ultimate in corrosion
resistance and long life. The thermal performance rating of the fluid cooler with
a stainless steel coil shall be certified by the Cooling Technology Institute.
■ 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 recommend that
you specify a ladder and guardrail on these models Portable ladders and other
“make-do” access means are inappropriate for equipment of this size and com-
plexity. Also, fixed ladders without fan deck guardrails invite unsafe maintenance
practices and must not be allowed.