10
DUCTED FAN BREAK-IN
Before you run the fan make sure that:
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An appropriate LiPo battery is being used.
•
All the fan parts are properly attached to the fan and to the airframe.
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If any part of this fan should become damaged, replace all parts.
Never attempt to repair damaged parts.
•
Keep the fan away from objects as it will try to suck them in,
which can cause damage to the fan and/or bodily injury.
•
Always use eye protection when operating the fan unit.
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NEVER look into the fan as it is running.
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Ensure all persons in the immediate area are using eye protection
while the fan is in operation.
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NEVER point the fan in the direction of anyone.
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Make sure you inspect the fan and all its parts before each run.
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Never use motors larger than those recommended.
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Never run a fan that is damaged in any way.
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Never run the fan while holding it in your hands.
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NEVER run the fan above 50,000 rpm!
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Never run the fan rotor on any motor outside of the housing.
This is a device that runs at very high rpm and as such it needs to be handled
carefully. There is a very short “break-in” period that needs to be followed to
ensure that all parts fit well, everything is tight, and that no excessive vibration
is present when running the fan. Also, the fan blades will expand as rpm are
increased to the point of possibly touching the housing. This is expected and it
is within the “break-in” procedures. The blades will get shortened slightly to fit
the fan housing as they wear on the sides.
The procedure below must be followed carefully:
1. If the fan is properly installed on an airframe and everything is ready to be
tested, arm the speed controller and advance the throttle slowly to approximately
1/4 power for three minutes. Check for vibration and/or unusual noises. If there
is vibration or unusual noise present during the test, do not proceed to step 2
until the problem is resolved. Inspect all moving parts, being sure that motor
screws and the rotor adapter screws are tight. Confirm that the fan blades rotate
smoothly within the housing and the rotor is not rubbing on the mounting plate
(Be sure to unplug the battery from the ESC before handling the fan!).
2. If the fan operates smoothly, move the stick to 1/2 throttle and repeat the test
as described in step 1.
3. Slowly advance the throttle to 3/4 power. When using high-power systems,
the fan blades may rub a bit on the fan housing. You can see this by powering
down the system and checking for marks or grooves in the housing. If this is the
case, return to 1/2 throttle and cycle between 1/2 throttle and 3/4 throttle for three to four minutes. Doing so will adjust the length
of the fan blades as they slowly wear on the fan housing.
4. Repeat the procedure described in step 3 between 3/4 throttle and full throttle.
5. Unplug the battery from the ESC and check the fan for rubbing, cracks, or missing parts.
If your fan appears damaged, vibrates excessively, or makes unexpected noises, please return it to Hobby Services for inspection.
