MicroCool BIGHORN 1000, Installation & Maintenance Manual

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BIGHORN_March 2020.docx
March 26, 2020 Page
13 of 36
10.5
ATOMIZATION HOSE AND MANIFOLD
The hoses and lines should be periodically inspected for damage such as cuts and abrasions. Also check that the
hoses have not come into contact with sharp edges or are vibrating against an abrasive surface.
10.6
SYSTEM FLUSH – SHUT DOWN - WINTERIZING
If the system is to be SHUT DOWN for a period of time, all automatic drain valves or end plugs should be removed
and the complete system flushed. Then all water remaining in the lines should be air purged. The supply water to
the pump module should be turned off. Empty filter housings of any remaining water and replace filter cartridges
with new dry cartridges. Turn off electrical power to pump module. This will help to prevent water freezing and
damaging the pump or its components.
11. GUIDELINES FOR LOCATION AND INSTALLATION OF ATOMIZATION LINE
11.1
AIRFLOW
Fog evaporation and subsequent humidification or cooling is enhanced by air movement and flow. Continuous
cooling requires continuous ventilation (a fresh supply of warm or hot dry air). The proper installation and positioning
of the atomization lines across any prevailing airflow can seriously affect performance. Contact a MicroCool
Specialist for design recommendations.
11.2 SUPPORTS & ALIGNMENT
Align atomization lines with any existing rigid supports such as trusses, rafters, gutters, support poles or walls. If
such supports are not available or are not convenient, then suitable support structures should be designed and
fabricated to create maximum fog effectiveness.
11.3 NOZZLE ANGLE
The best nozzle angle may vary with application. Consult a MicroCool specialist for best advice.
11.4 NOZZLE DIRECTION
Avoid pointing atomization nozzles directly at or towards any close object or surface where the fog can collide before
evaporation. Adjust ROC nozzles or Flex line nozzles to avoid this situation. For welded stainless lines use of a
nozzle extender to change the spray direction or use a nozzle plug to block off the fog.
11.5 CEILINGS & SHADE SCREENS
If the atomization lines are to be installed below a ceiling or a shading structure, a distance of 18" to 24" (450mm to
600mm) should be preserved. This allows the nozzles to be orientated at the correct angle without directly spraying
on any surface.
11.6 HOT SURFACES
Flexible atomization lines or manifold hoses should never be allowed to come in direct contact with any hot surface.
They should be kept back a minimum distance of 39" (1mt) from steam pipes, heaters, hot surfaces, etc. If flexible
manifold lines must be routed across roof structures, it is recommended that they be protected and insulated from
both the hot roof surface and intense direct sunlight. Mounting flexible lines in PVC chase tubing is recommended.
Flexible lines/manifolds will shrink in normal applications. Allow at least 1” (2.5 cm) slack for every 10ft (3mt) lengths
during installation.
11.7 DRAINAGE
When using a municipal water supply, atomization lines and manifold hoses should be installed so they will drain. It
is important that all lines be installed with a gradient of at least 1:100. Pitch all lines back to the pump and use auto
drain vales at the end of each line.
11.8 VENTING
In some instances, it is advisable to install an automatic drain valve pointed straight up, if there is a high point in the
system that cannot otherwise drain. This allows air to enter the system when draining, speeding up the drainage
time. Conversely, this will allow air to leave the system when filling/pressurizing and eliminates trapped air pockets.