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|
 What information do I need
to select a fan? |
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1. Basic
information is volume(CFM), static pressure,
 gas
temperature, and altitude.
2. Do
you prefer a direct drive or belt driven
fan?
3. Will
the fan operate in a corrosive or abrasive
environment?
4. Is
the air clean and/or are you handling
any
material? |
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| How much heat is
needed for a warehouse? |
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| As a rule of thumb for the Carolina's,
3 Btu per cubic foot. |
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| Why is my fan not
performing as expected? |
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1. Check
the rotation of the fan to insure motor wired
correctly.
2. Check
your ductwork for any obstructions.
3. Are
the system dampers in a closed position?
4. Is
your ductwork designed properly? |
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| What is causing my
fan to vibrate? |
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1. In
many instances fans should be touch up
balanced
in the field prior to startup.
2. Check
the fan to insure the drive alignment
and
proper
belt tension.
3. Inspect
the fan wheel for any build up of material.
4. Is
the fan foundation structurally sound?
5. Is
your fan being supported by the ductwork?
6. Inspect
the fan base to insure it is level, grouted
and
secure.
7. Is
the fan operating in the stalled mode? |
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| What carrying velocity do I need for light
dry dust? |
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| Typically 3,200 to 4,500
feet per minute. |
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| How much air can I
pull through an Air Intake Louver? |
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| Using a drainable blade
louver, conservatively 500-600 feet per minute. |
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| Can I remove moisture
from my building wit ventilation fans? |
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| No, requires dehumidification
equipment. |
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| Is there
a recommended air to cloth ratio for pharmaceutical
dust? |
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| Yes, from 1.5 to 1.0,
to a, 3.0 to 1.0, air to cloth ratio. You must consider
the type of dust. |
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| How many air changes
per hour do I need to properly ventilate my warehouse? |
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| For most applications
5 to 10 changes per hour. |
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| Do you have recommendation
for a fan to move material
or waste? |
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| Use an open wheel radial
blade fan since it is self cleaning. |
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