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PMC & eco-PMC SERIES FORCED DRAFT EVAPORATIVE CONDENSERS
Method of Shipment
Forced draft units are shipped either fully assembled (small units) or with the heat transfer casing (top) section(s) separate from the basin
and fan (bottom) section(s). These sections have mating flanges and will join together in a waterproof joint when sealed and bolted
together as described in the following instructions. Miscellaneous items, such as sealer, self-tapping screws and any other required
materials, are packaged and placed inside the pan for shipment.
NOTE:
All casing sections are factory inspected prior to shipment to verify proper fit for rigging. Please take extra care to handle
and rig each section per the instructions of this manual to avoid possible distortion and poor casing alignment. It is advisable to check
each section upon receipt and during each lift to ensure that the factory alignment has not been altered. Should the field inspection
indicate the section alignment (“square”) has been altered, please contact the factory or your local EVAPCO representative for
additional instructions to obtain proper section fit.
Storage
Do not place tarps or other coverings over the top of the units if the units are to be stored before installation. Excessive heat can build up
if the units are covered causing possible damage to the PVC eliminators. For extended storage beyond six months rotate the fan and fan
motor shaft(s) monthly. Also, the fan shaft bearings should be purged and regreased prior to startup.
General
For extended lifts, or where hazards may exist, it is recommended that safety slings and spreaders be employed for safety. Refer to the
extended lift information in this bulletin.
International Building Code Provisions
The International Building Code (IBC) is a comprehensive set of regulations addressing the structural design and installation requirements
for building systems– including HVAC and industrial refrigeration equipment. Since June 2008, all 50 states plus Washington, D.C. have
adopted the International Building Code. The code provisions require that evaporative cooling equipment and all other components
permanently installed on a structure must meet the same seismic design criteria as the building. The PMC series and eco-PMC series
coolers and condensers are compliant with the latest IBC codes up to 1g with standard construction and up to 5.12g with additional
structural modifications.
All items attached to the EVAPCO PMC series closed circuit cooler, PMC series evaporative condenser, or eco-PMC series evaporative
condenser must be independently reviewed and isolated to meet applicable wind and seismic loads. This includes piping, ductwork,
conduit, and electrical connections. These items must be flexibly attached to the EVAPCO unit so as not to transmit additional loads to
the equipment as a result of seismic or wind forces.
Structural Steel Support
Two structural I-beams running the length of the unit are required for supporting the unit. These beams should be located underneath the
outer flanges of the unit as shown in
Figure 1
. See
Table 1
for steel support dimensions.
Mounting holes, 3/4” in diameter, are located in the bottom flange for bolting to the structural steel. Refer to the recommended
structural steel support drawing and certified print for exact bolt hole location. Bolt the bottom section to the steel support before rigging
the top section.
Beams should be sized in accordance with accepted structural practices. Maximum deflection of the beam under the unit should be
1/360 of the unit length, not to exceed 1/2”. Deflection may be calculated by using 55% of the operating weight as a uniform load on
each beam (see certified print for operating weight).
The supporting I-beams should be level to within 1/8” in 6’ before setting the unit. Do not level the unit by shimming between the bottom
