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Safety Information
The Blower Door fan should only be connected to a properly installed and tested power supply. In
case of emergencies, disconnect the power cord from the AC power mains outlet. During
installation, use the nearest readily accessible power outlet and keep all objects away from
interfering with access to the outlet.
•
Disconnect the power plug from the Blower Door fan receptacle before examining or making any
adjustments to the fan motor, blades or electrical components.
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The Blower Door Fan is a very powerful and potentially dangerous piece of equipment if not used and
maintained properly. Carefully examine the fan before each use. If the fan housing, fan guards, blade,
controller or cords become damaged, do not operate the fan until repairs have been made. Repairs should
only be made by qualified repair personnel.
•
If you notice any unusual noises or vibrations, stop and unplug the fan. If you can't find the source of the
problem, contact the manufacturer/distributor.
•
Keep people, animals and objects away from the Blower Door fan when it is operating.
•
Press the power plug firmly into the power receptacle on the Blower Door fan, and the AC power mains
outlet. Failure to do so can cause overheating of the power cord and possible damage.
•
Do not use ungrounded outlets or adapter plugs. Never remove or modify the grounding prong. Use only
approved and inspected electrical wiring and connections.
•
Do not operate the Blower Door fan if the motor, controller or any of the electrical connections are wet.
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For long-term operation, such as maintaining building pressure while air-sealing, use a flow ring whenever
possible to ensure proper cooling of the BlowerDoor fan motor. This will minimize the heating of the fan
and is important in warmer weather.
•
Do not reverse the Blower Door fan (if the fan has a flow direction switch) while the blades are turning.
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The motor is thermally protected and if you experience a motor shut down, be sure to turn off the fan speed
controller so that the fan does not restart unexpectantly after the motor cools down.
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The operator should wear hearing protection when in close proximity to the fan operating at high speed.
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Adjust all combustion appliances so they do not turn on during the test. If combustion appliances turn on
during a depressurization test, it is possible for flames to be sucked out of the combustion air inlet (flame
rollout). This is a fire hazard and can possibly result in high CO levels.
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If there are attached spaces (e.g. townhouses) that could contain a vented combustion appliance, either
adjust those appliances to prevent them from turning on during the test, or be sure that the attached spaces
are not depressurized or pressurized when the Blower Door is operating.
•
Be sure that fires in fireplaces and woodstoves are completely out before conducting a test. Take
precautions to prevent ashes from being sucked into the building during the test. In most cases it will be
necessary to either tape doors shut, clean out the ashes, and/or cover the ashes with newspaper.
•
Be sure you have returned the building to its original condition before leaving. This includes turning the
thermostat and water heater temperature controls to their original setting. Always check to see that furnace,
water heater and gas fireplace pilot lights have not been blown out during the Blower Door test - re-light
them if necessary. Remove any temporary seals from fireplaces or other openings sealed during the test.
•
If combustion safety problems are found, tenants and building owners should be notified immediately and
steps taken to correct the problem including notifying a professional heating contractor if basic remedial
actions are not available. Remember, the presence of elevated levels of carbon monoxide in ambient
building air or in combustion products is a potentially life threatening situation. Air sealing work should not
be undertaken until existing combustion safety problems are resolved, or unless air sealing is itself being
used as a remedial action.
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Safety Information
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